Raden Heru Praptana - Academia.edu (original) (raw)
Papers by Raden Heru Praptana
International Agrophysics
Ozonation is a promising method for maintaining seed quality. However, the ability of ozone to pr... more Ozonation is a promising method for maintaining seed quality. However, the ability of ozone to preserve the quality of aged seeds, which have already deteriorated, is still open to question. This study evaluated the effectiveness of ozone in alleviating ageing soybean seed damage and also the economic feasibility of ozone technology under field conditions. Samples under ozonation storage (they were stored in open containers and woven sacks) were compared with those stored under conventional storage conditions (they were stored in woven bags without ozonation). Ozonated samples were exposed to 150 g h-1 of ozone gas for three hours a day for a six month storage period. All samples (with and without ozonation) were stored at 18±5°C and 50±5% relative humidity. Observations were conducted every month with regard to the seeds germination percentage, vigour index, moisture content, protein and free fatty acids. The results showed that ozonation has the potential to increase the viability of aged soybean seeds for up to 5 months. However, the decrease in the protein and free fatty acids levels in the ozonated seeds occurred more rapidly than in the control. Moreover, no significant difference was found between the ozonated seeds in open containers and sacks during storage, except for their moisture content. Ozone application on aged soybean seeds was found to be financially feasible with an ratio of revenue to cost value of 1.73, an return on investment of 74.63% and a payback period of 1.34 years. K e y w o r d s: aged seed, soybean, ozone, quality, economic feasibility
IOP conference series, May 1, 2023
Brown planthopper (BPH) Nilaparvata lugens Stall is a major pest of rice that often causes outbre... more Brown planthopper (BPH) Nilaparvata lugens Stall is a major pest of rice that often causes outbreaks in several rice production centers in Indonesia. The use of insecticides is still the choice of farmers to control attacks due to weak mitigation efforts in an area. Continuous use of insecticides can increase the resistance and resurgence of BPH. The purpose of this study was to determine the level of sensitivity of the BPH population to the pimetrozine insecticide. The research was conducted at Assesment and Research Instalation of Agricultural Technology Ungaran, Assesment Institute of Agricultural Technology Central Java, Semarang Regency, Central Java, Indonesia from October 2019 to June 2020. The BPH population was collected from five regions, namely Jaten and Bolong Districts, Sukoharo District, and Bendosari, Mojolaban and Pulokarto Districts, Karanganyar District. The method of sensitivity test of BPH to insecticides was carried out according to the IRAC method number 005. Observations were made on the percentage of BPH mortality. The data was processed using Probit analysis to determine the LC50 value. The LC50 value was used to determine the resistance factor (RF). The results showed that the population of BPH Bolong Karanganyar was the most sensitive to the insecticide pymetrozine with an LC50 value of 13.44 ppm. The populations of BPH Jaten, Bolong, Bendosari, Mojolaban and Pulokarto were not resistant to pymetrozine insecticide due to the level of RF was ≤4. The population of BPH Pulokarto Sukoharjo with an RF value of 2.47 has the potential to become more resistant to the insecticide pymetrozine. It is necessary to periodically monitor the resistance of BPH to pymetrozine insecticides in the Karanganyar and Sukoharjo areas to prevent further resistance development.
Agriculture, Aug 15, 2023
This article is an open access article distributed under the terms and conditions of the Creative... more This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY
The Open Agriculture Journal
Background: Tungro, an important viral disease in rice, is a co-infection of rice tungro bacillif... more Background: Tungro, an important viral disease in rice, is a co-infection of rice tungro bacilliform virus (RTBV) and rice tungro spherical virus (RTSV). Severe symptoms were reported in rice fields on two major islands in Indonesia: Jawa (Magelang District) and Sulawesi (Sidrap District). Objective: Sequences of global isolates currently registered in NCBI GenBank were examined with two new Indonesian isolates to understand the phylogeny of RTSV based on different genome regions as well as to spot the gap in the molecular data of Indonesian isolates. Methods: Transmission test of RTSV using the vector green leaf hopper was performed, and then the complete sequences of coat protein 1 (CP1) gene of Magelang and Sindrap districts were molecularly studied using MEGA X software and Recombination Detection Program. Results: The obtained complete sequence of coat protein 1 (CP1) gene of Magelang-7 (OQ426495) and Sindrap-9 (OQ426496) isolates were aligned with 39 isolates in NCBI GenBank. ...
IOP Conference Series: Earth and Environmental Science
The epidemiological aspect including monitoring is a critical component of implementing an early ... more The epidemiological aspect including monitoring is a critical component of implementing an early warning system. The tungro epidemic in rice is influenced by the population dynamics of the green leafhopper vector. Likewise, rainfall and biotic factors affect the abundance of green leafhopper vectors. Long-term data are essential to explain that mechanism, so population predictions on a seasonal scale can be obtained accurately. This paper analyses weekly data on catching green leafhoppers and other arthropods in a continuous cropping system from 2013-2019. We utilize the climatic data gathered to assess the impact of climatic conditions on population dynamics. To improve the additive and homoscedasticity of the time series, we transform the data. The data are fitted in a linear model. The results showed that the green leafhopper population affected the incidence of tungro in the field. From January to December, the population dynamics of the green leafhopper can be characterized. It...
E3S Web of Conferences
The study aims to analyze the increase in farmers' knowledge and attitudes to technological i... more The study aims to analyze the increase in farmers' knowledge and attitudes to technological innovations in soybean production using the dissemination method. The study was carried out from October 2020 to January 2021 by combining the dissemination of meetings information and technology demonstrations in the Grobogan Regency. Data collection used a survey before (pre-test) and after (post-test) evaluation in the dissemination implementation. Respondents were determined using purposive sampling, 35 cooperative farmers in disseminating soybean technology innovation activities. The data were descriptively analyzed using the average value, percentage, and paired sample t-test. The enhancement of farmers' knowledge is analyzed based on the percentage of correct answers by farmers. Changes in farmers' attitude-response are implemented into a radar graph. The study results showed that after attending meetings information and technology demonstrations, the farmers' knowledge...
IOP Conference Series: Earth and Environmental Science, 2021
The assembly of new high-yield and disease-resistant rice varieties is one of the efforts to incr... more The assembly of new high-yield and disease-resistant rice varieties is one of the efforts to increase the rice production and productivity in Indonesia. New site-specific varieties that match farmer preferences are targeted for plant breeding. The yield test is one of the activities in plant breeding to identify any promising lines that have adaptability to a specific growing environment. The purpose of this study was to determine the correlation of the phenotypic components with the yield of the promising superior rice lines which have high yield potential and are resistant to tungro disease. The research was conducted in the tungro endemic area of Lanrang South Sulawesi during the rainy season (MH) December 2017 to March 2018. A total of 20 rice slaves were arranged in an augmented design consisting of 4 blocks, each block there were 5 test lines and 2 comparison varieties namely Ciherang and Inpari 7 Lanrang. The components observed included plant height, flowering age, number of...
IOP Conference Series: Earth and Environmental Science, 2022
Breeding activities to produce a new site-specific rice varieties resistant to tungro require of ... more Breeding activities to produce a new site-specific rice varieties resistant to tungro require of suitable genetic materials as cross-breeding materials. This research aims to determine the seed phenotypic characters of promising tungro resistant rice lines and their similarity. The research was conducted using a completely randomized design with treatment of 42 promising tungro-resistant rice lines, 1 resistant rice variety (Inpari 7) and 1 susceptible rice variety (TN1), that each of which was repeated 3 times. The characters were observed included of quantitative and qualitative characters. Observation of seed characters was carried out based on the standard system of characterization and evaluation of rice plants. The similarity of seed characters was analyzed by using the NTSYS pc version 2.1 program and displayed in the form of a dendrogram. The results showed that most of the tested lines had the same quantitative characters as the Inpari 7 variety. The value of variability of...
Sustainability
Centella asiatica is an herbal plant with many health benefits due to the content of asiaticoside... more Centella asiatica is an herbal plant with many health benefits due to the content of asiaticoside compounds. Factors affecting asiaticoside content are altitude, soil texture, and soil nutrient status. This research aimed to identify the effect of zeolite, P2O5 fertilizer, and soil media from different altitudes on C. asiatica. The research was conducted in a greenhouse from August 2017–June 2018. The experimental design was a factorial, completely randomized design with three factors and four replications. The first factor was soil media that originated from 100, 450, and 900 m above sea level (asl), the second factor was the dose of P2O5 fertilizer (0, 27, 54, and 81 kg ha−1), and the third was the dose of zeolite (0, 3, and 6 t ha−1). The results showed that applying zeolite minerals at all altitudes increased nutrient availability and soil cation exchange capacity (CEC) by up to 70%. The novelty of this study is that the soil from an altitude of 900 m asl, with a P2O5 fertilizer...
Agriculture
Sorghum is an important food crop commodity in the midst of climate change conditions and the thr... more Sorghum is an important food crop commodity in the midst of climate change conditions and the threat of a global food crisis. Sorghum, which has an adaptive advantage to all land conditions, is suitable for use as a food substitute for rice and wheat. The purpose of this study was to evaluate the economic value, farmers’ perceptions, and specific strategies for developing sorghum in Central Java and Yogyakarta, Indonesia. The research was conducted in Wonogiri Regency, Central Java, and Gunungkidul Regency, Yogyakarta from September to November 2022. The research was carried out through the observation of 120 respondents with indicators of farming characteristics and farmers’ perceptions of sorghum development, as well as focus group discussions (FGD) and depth interviews with indicators of internal and external factors for sorghum development. The analysis used is benefit cost (BC) to evaluate the economic value of sorghum farming, the Likert scale to determine farmers’ perceptions...
Agronomy
Rice production in the karst dryland is still low, due to soil characteristics that lack nutrient... more Rice production in the karst dryland is still low, due to soil characteristics that lack nutrient availability. Meanwhile, upland rice has received less attention, and it has not been used to its full potential. This study aimed to evaluate the effect of various combinations of inorganic fertilizers, poultry manure, and upland rice varieties on the production and economic value of karst dryland in Gunungkidul, Yogyakarta. This experiment was arranged in a factorial design, with inorganic fertilizers, poultry manure, and upland rice varieties set in a randomized block design with three replications. The first factor was a combination of inorganic and organic fertilizer rates: 72 N kg ha−1 + 26 P2O5 kg ha−1 + 25 K2O ha−1 + 3 t ha−1 organic, 92 N kg ha−1 + 36 P2O5 kg ha−1 + 30 K2O kg ha−1 + 2 t ha−1 organic, 112 N kg ha−1 + 46 PO5 kg ha−1 + 35 K2O kg ha−1 + 1 t ha−1 organic. The second factor is the upland varieties of Inpago 8, Inpago 10, and Inpago 12 and lowland variety Inpari 42 Ag...
Upland rice farming is one of the sources of household income for farmers in rainfed rice fields.... more Upland rice farming is one of the sources of household income for farmers in rainfed rice fields. This study aims to determine the profits and to identify the factors that influence the profitability of upland rice farming. The research was conducted in Tegalgiri Village, Nogosari Subdistrict, Boyolali District, Central Java, in April to May 2020 with a survey method. The data were analyzed using financial analysis methods and the factors that influence profits using the profit function. The results of the analysis showed that upland rice productivity averaged 3,096 kg/ha of dry milled grain at a price of IDR 4,500/kg, so that the profit received by farmers was IDR. 7,072,000/ha with an RCR of 2.03. Factors that affect the profitability of upland rice farming are seed price, land size, farmer’s age, and working time on the land. Farmers can increase profits by reducing the number of seeds, increasing the planted area, and increasing the time worked on the land. To increase the profi...
Sustainability
The serious problems of sandy soils for crop development are low water-holding capacity, nutrient... more The serious problems of sandy soils for crop development are low water-holding capacity, nutrient retention, and low content of all nutrients. The objective of the study was to increase the nutrient content of sandy soil and evaluate nutrient types that mostly affect the high shallot yield with reasonable economic values. The field experiment was conducted on the upland sandy loam soil. Six treatments consisting of complete nutrients, N-, P-, K-, Mg- and S-omission tests were arranged in a randomly completed block design with four replicates. The observed parameters included soil physicochemical properties, tissue nutrient content, growth, yield, and input-output of shallot cultivation. The results showed that N, P, K, Mg and S application successfully increased shallot bulb, achieving 11.43 t ha−1 on sandy soil. The order of shallot tissue content was K > N > P~Mg > S, where the S, P, N, and Mg are limiting factors, as revealed by significantly lower relative yield (varyin...
Balai Besar Pengkajian dan Pengembangan Teknologi Pertanian, 2007
Notulae Scientia Biologicae, 2021
Sugarcane (Saccharum spp.) is an important tropical crop around the world, involving in Indonesia... more Sugarcane (Saccharum spp.) is an important tropical crop around the world, involving in Indonesia, however low productivity is still problem for it. The study was aimed to investigate effect of different planting methods on improving cane growth-yield performances and their partial economic analysis. The study was conducted at Gedangdowo, Jepon, Blora District, Central Java, Indonesia from 2015-2017 at initial planting (IP) to sugarcane ratoon SR-1 and SR-2. Material used was qualified seeds of PS.862 variety. Three planting methods were tested: 1) double trench system (DTS) with 50 cm distance between trench and 135 cm distance between double trenches; 2) single trench system (STS) with 120 cm distance of canter to center (CTC) and 3) STS with 110 cm distance of CTC. The experiment was arranged in randomized complete block design (RCBD) with 6 replications. Results of the study revealed that DTS 50/135 was the most appropriate planting method inducing higher cane productivity up to...
E3S Web of Conferences, 2021
The character of growth and production of hybrid maize seeds in Bima URI 20 used a three-way cros... more The character of growth and production of hybrid maize seeds in Bima URI 20 used a three-way cross. The female elders of Bima 4 variety and male elders (G180 / Mr14 x Nei 9008P). The research objective was to see the relationship between growth and three-bonded mother trees in the production of Bima 20 URI hybrid maize seeds. The research was conducted in Kendal Regency with an area of 2 hectares in MK-1 2019 through the OFCOR (On-Farm Client-Oriented Research) approach. This research uses descriptive analysis and the relationship between variables. The results showed that genetic and environmental factors influenced the growth of parent seeds. Rise of male elders 96.5%, female elders 98.6%, Tall plants 208.5 cm, male elders 148.4 cm, ear height 74.1 cm, male elders 57.9 cm, age the female flowers 50.35, and male flowers 47.8. The results of the assessment test for the parameters of ear weight assessment, seed weight per ear, and 1000 dry seed weight resulted in a value of 0.8-0.9 t...
IOP Conference Series: Earth and Environmental Science, 2018
The productivity of upland rice is still low as compared to that of irrigated rice. A cultivation... more The productivity of upland rice is still low as compared to that of irrigated rice. A cultivation effort needs to be done to increase productivity. One effort can be made by providing additional biostimulants to promote growth and beneficial bacteria. The study was conducted to determine the effect of some biostimulants on the root and population of phosphate solubilizing bacteria in upland rice (Situ Patenggang varieties). The tested treatment was a combination of biostimulants derived from seaweed, humic acid, and organic compounds. Each treatment was repeated 5 times. Parameters observed were the length and weight root, pH analysis, phosphate and C-organic levels in the soil and population of phosphate solubilizing bacteria. The results showed that the combination of biostimulant gave significant effect on plant growth parameters. The combination of a humic acid with seaweed extract gave the highest length and weight root. Humic acid also has a significant effect on the total population of phosphate solubilizing bacteria. The total population of phosphate solubilizing increased up to 150,000 cfu/mg.
Tungro merupakan salah satu penyakit penting pada padi yang menjadi kendala dalam peningkatan pro... more Tungro merupakan salah satu penyakit penting pada padi yang menjadi kendala dalam peningkatan produksi padi di Indonesia. Tungro disebabkan oleh infeksi dua virus yang berbeda yaitu Rice tungro bacilliform virus (RTBV) dan Rice tungro spherical virus (RTSV), yang keduanya hanya dapat ditularkan oleh wereng hijau terutama Nephotettix virescens (Distant) secara semipersisten. Adanya indikasi bahwa terjadi variasi virulensi virus tungro dari daerah yang berbeda dan hubungan spesifik antara ketahanan varietas dengan isolat virus tungro maka diperlukan suatu kajian tentang virulensi dan keragaman genetik virus tungro dari beberapa daerah endemis di Indonesia. Penelitian ini bertujuan untuk mendeterminasi virulensi virus tungro dari beberapa daerah endemis di Indonesia, mengkaji patogenisitas virus tungro pada beberapa varietas tahan serta mengidentifikasi keragaman molekular virus tungro. Satu varietas rentan yaitu TN1 dan sepuluh varietas tahan digunakan di dalam penelitian. Survei dan koleksi tanaman terinfeksi dilakukan di beberapa daerah endemis tungro yaitu Jabar, Jateng, DIY, Sulteng, Sulbar, Sulsel, Bali dan NTB. Penularan buatan dengan metode tabung digunakan dalam uji virulensi dan patogenisitas virus tungro. Wereng hijau hasil tangkapan dari lapangan digunakan sebagai penular. Virulensi virus tungro ditentukan berdasarkan nilai indeks penyakit (DI). Patogenisitas virus tungro diidentifikasi berdasarkan nilai insidensi tungro. Analisis PCR digunakan untuk deteksi keberadaan virus tungro pada tanaman terinfeksi di lapangan dan tanaman TN1 hasil penularan. Identifikasi keragaman molekular virus tungro dilakukan dengan analisis PCR-RFLP dan PCR-sequencing. Keragaman molekular virus tungro diidentifikasi berdasarkan pola potongan pita DNA serta variasi sekuen nukleotida dan asam amino dalam bentuk dendrogram kekerabatan. Hasil survei menunjukkan bahwa tungro ditemukan di semua daerah endemis dengan insidensi, sebaran dan visual keparahan gejala yang berbeda-beda. Virulensi virus tungro bervariasi di antara daerah endemis. Isolat Jateng merupakan isolat paling virulen dan tidak semua isolat dari daerah endemis di pulau Jawa lebih virulen dibanding isolat dari luar Jawa. Patogenisitas virus tungro dari beberapa daerah endemis bervariasi pada beberapa varietas tahan. Isolat Jateng, Sulteng dan NTB mampu menginfeksi semua varietas tahan dan patogenisitas isolat Jateng paling tinggi dibanding isolat yang lain. Keberadaan RTBV dan RTSV terdeteksi dalam setiap sampel tanaman terinfeksi di lapangan dan tanaman TN1 hasil penularan. Virus tungro dari beberapa daerah endemis di Indonesia teridentifikasi beragam pada tingkat molekular. Keragaman molekular virus tungro tidak berkorelasi dengan perbedaan geografi daerah endemis dan virulensi. Keragaman molekular kelompok isolat virus tungro dari Indonesia berbeda dengan kelompok dari luar negeri.
JURNAL PANGAN
Penggunaan pupuk organik cair (POC) merupakan salah satu alternatif untuk memenuhi kebutuhanunsur... more Penggunaan pupuk organik cair (POC) merupakan salah satu alternatif untuk memenuhi kebutuhanunsur hara makro dan mikro bagi tanaman tanpa menimbulkan pencemaran tanah. Tujuan penelitian adalahuntuk mengetahui efektivitas pupuk organik cair hasil aktivasi molekul dalam meningkatkan pertumbuhan danhasil tanaman jagung. Penelitian dilaksanakan di lahan sawah tadah hujan di Desa Gemolong, KecamatanGemolong, Kabupaten Sragen pada bulan Juli sampai dengan Oktober 2021. Rancangan penelitianmenggunakan rancangan acak kelompok dengan tujuh variasi perlakuan, setiap perlakuan diulang empatkali sehingga menghasilkan 28 unit percobaan. Pupuk yang digunakan dalam penelitian ini adalah pupukNPK Phonska (15-15-15), Urea dan POC hasil aktivasi molekul. Parameter pengamatan meliputi tinggitanaman, jumlah daun, diameter batang, panjang dan diameter tongkol, berat tongkol kupas dan beratjagung pipilan kering giling. Data hasil pengamatan diamati dengan sidik ragam dilanjutkan uji Duncan taraf5 persen....
Jurnal Penelitian Pertanian Tanaman Pangan
Jarwo super technology is a combination of superior rice farming technology, including the 2:1 pa... more Jarwo super technology is a combination of superior rice farming technology, including the 2:1 paired rows planting system, high yield potential varieties, bio-decomposers, biological fertilizers, bio-pesticides, and agricultural mechanization application. The assessment aims to determine plant diversity, production increase, and financial feasibility of jarwo super technology rice farming. The assessment was conducted on March-Juni 2017 with the "demplot" method of applied jarwo super technology in Karanganyar Regency, Central Java. Primary data is growth, production, and rice farming performance at the "demplot", as well as existing farmer data. Samples were collected purposively, it's the farmers who carried out the "demplot" and the farmers around the "demplot", which meant 30 farmers. Data were descriptively analyzed using the average value, RCR, MBCR, net profit value, and BEP. The results showed that the rice yields with jarwo super was 15.63% higher than the existing farmers. Jarwo super rice farming is more efficient and economically feasible with RCR 1.44 value. MBCR is 11.6 value, it that each additional cost of implementing jarwo super rice farming of 1.000 IDR increases income by 11.600 IDR. Proportion of costs increase in jarwo super rice farming is 350.000 IDR, but profits reached 4.077.083 IDR. Net profit value of 1.7 shows that jarwo super rice farming can increase profits. Production level and dry grain harvested price on farmers level were 30.76% higher compared to BEP production and BEP price. Jarwo super rice farming is feasible to develop that because can increase farmer's production and profits.
International Agrophysics
Ozonation is a promising method for maintaining seed quality. However, the ability of ozone to pr... more Ozonation is a promising method for maintaining seed quality. However, the ability of ozone to preserve the quality of aged seeds, which have already deteriorated, is still open to question. This study evaluated the effectiveness of ozone in alleviating ageing soybean seed damage and also the economic feasibility of ozone technology under field conditions. Samples under ozonation storage (they were stored in open containers and woven sacks) were compared with those stored under conventional storage conditions (they were stored in woven bags without ozonation). Ozonated samples were exposed to 150 g h-1 of ozone gas for three hours a day for a six month storage period. All samples (with and without ozonation) were stored at 18±5°C and 50±5% relative humidity. Observations were conducted every month with regard to the seeds germination percentage, vigour index, moisture content, protein and free fatty acids. The results showed that ozonation has the potential to increase the viability of aged soybean seeds for up to 5 months. However, the decrease in the protein and free fatty acids levels in the ozonated seeds occurred more rapidly than in the control. Moreover, no significant difference was found between the ozonated seeds in open containers and sacks during storage, except for their moisture content. Ozone application on aged soybean seeds was found to be financially feasible with an ratio of revenue to cost value of 1.73, an return on investment of 74.63% and a payback period of 1.34 years. K e y w o r d s: aged seed, soybean, ozone, quality, economic feasibility
IOP conference series, May 1, 2023
Brown planthopper (BPH) Nilaparvata lugens Stall is a major pest of rice that often causes outbre... more Brown planthopper (BPH) Nilaparvata lugens Stall is a major pest of rice that often causes outbreaks in several rice production centers in Indonesia. The use of insecticides is still the choice of farmers to control attacks due to weak mitigation efforts in an area. Continuous use of insecticides can increase the resistance and resurgence of BPH. The purpose of this study was to determine the level of sensitivity of the BPH population to the pimetrozine insecticide. The research was conducted at Assesment and Research Instalation of Agricultural Technology Ungaran, Assesment Institute of Agricultural Technology Central Java, Semarang Regency, Central Java, Indonesia from October 2019 to June 2020. The BPH population was collected from five regions, namely Jaten and Bolong Districts, Sukoharo District, and Bendosari, Mojolaban and Pulokarto Districts, Karanganyar District. The method of sensitivity test of BPH to insecticides was carried out according to the IRAC method number 005. Observations were made on the percentage of BPH mortality. The data was processed using Probit analysis to determine the LC50 value. The LC50 value was used to determine the resistance factor (RF). The results showed that the population of BPH Bolong Karanganyar was the most sensitive to the insecticide pymetrozine with an LC50 value of 13.44 ppm. The populations of BPH Jaten, Bolong, Bendosari, Mojolaban and Pulokarto were not resistant to pymetrozine insecticide due to the level of RF was ≤4. The population of BPH Pulokarto Sukoharjo with an RF value of 2.47 has the potential to become more resistant to the insecticide pymetrozine. It is necessary to periodically monitor the resistance of BPH to pymetrozine insecticides in the Karanganyar and Sukoharjo areas to prevent further resistance development.
Agriculture, Aug 15, 2023
This article is an open access article distributed under the terms and conditions of the Creative... more This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY
The Open Agriculture Journal
Background: Tungro, an important viral disease in rice, is a co-infection of rice tungro bacillif... more Background: Tungro, an important viral disease in rice, is a co-infection of rice tungro bacilliform virus (RTBV) and rice tungro spherical virus (RTSV). Severe symptoms were reported in rice fields on two major islands in Indonesia: Jawa (Magelang District) and Sulawesi (Sidrap District). Objective: Sequences of global isolates currently registered in NCBI GenBank were examined with two new Indonesian isolates to understand the phylogeny of RTSV based on different genome regions as well as to spot the gap in the molecular data of Indonesian isolates. Methods: Transmission test of RTSV using the vector green leaf hopper was performed, and then the complete sequences of coat protein 1 (CP1) gene of Magelang and Sindrap districts were molecularly studied using MEGA X software and Recombination Detection Program. Results: The obtained complete sequence of coat protein 1 (CP1) gene of Magelang-7 (OQ426495) and Sindrap-9 (OQ426496) isolates were aligned with 39 isolates in NCBI GenBank. ...
IOP Conference Series: Earth and Environmental Science
The epidemiological aspect including monitoring is a critical component of implementing an early ... more The epidemiological aspect including monitoring is a critical component of implementing an early warning system. The tungro epidemic in rice is influenced by the population dynamics of the green leafhopper vector. Likewise, rainfall and biotic factors affect the abundance of green leafhopper vectors. Long-term data are essential to explain that mechanism, so population predictions on a seasonal scale can be obtained accurately. This paper analyses weekly data on catching green leafhoppers and other arthropods in a continuous cropping system from 2013-2019. We utilize the climatic data gathered to assess the impact of climatic conditions on population dynamics. To improve the additive and homoscedasticity of the time series, we transform the data. The data are fitted in a linear model. The results showed that the green leafhopper population affected the incidence of tungro in the field. From January to December, the population dynamics of the green leafhopper can be characterized. It...
E3S Web of Conferences
The study aims to analyze the increase in farmers' knowledge and attitudes to technological i... more The study aims to analyze the increase in farmers' knowledge and attitudes to technological innovations in soybean production using the dissemination method. The study was carried out from October 2020 to January 2021 by combining the dissemination of meetings information and technology demonstrations in the Grobogan Regency. Data collection used a survey before (pre-test) and after (post-test) evaluation in the dissemination implementation. Respondents were determined using purposive sampling, 35 cooperative farmers in disseminating soybean technology innovation activities. The data were descriptively analyzed using the average value, percentage, and paired sample t-test. The enhancement of farmers' knowledge is analyzed based on the percentage of correct answers by farmers. Changes in farmers' attitude-response are implemented into a radar graph. The study results showed that after attending meetings information and technology demonstrations, the farmers' knowledge...
IOP Conference Series: Earth and Environmental Science, 2021
The assembly of new high-yield and disease-resistant rice varieties is one of the efforts to incr... more The assembly of new high-yield and disease-resistant rice varieties is one of the efforts to increase the rice production and productivity in Indonesia. New site-specific varieties that match farmer preferences are targeted for plant breeding. The yield test is one of the activities in plant breeding to identify any promising lines that have adaptability to a specific growing environment. The purpose of this study was to determine the correlation of the phenotypic components with the yield of the promising superior rice lines which have high yield potential and are resistant to tungro disease. The research was conducted in the tungro endemic area of Lanrang South Sulawesi during the rainy season (MH) December 2017 to March 2018. A total of 20 rice slaves were arranged in an augmented design consisting of 4 blocks, each block there were 5 test lines and 2 comparison varieties namely Ciherang and Inpari 7 Lanrang. The components observed included plant height, flowering age, number of...
IOP Conference Series: Earth and Environmental Science, 2022
Breeding activities to produce a new site-specific rice varieties resistant to tungro require of ... more Breeding activities to produce a new site-specific rice varieties resistant to tungro require of suitable genetic materials as cross-breeding materials. This research aims to determine the seed phenotypic characters of promising tungro resistant rice lines and their similarity. The research was conducted using a completely randomized design with treatment of 42 promising tungro-resistant rice lines, 1 resistant rice variety (Inpari 7) and 1 susceptible rice variety (TN1), that each of which was repeated 3 times. The characters were observed included of quantitative and qualitative characters. Observation of seed characters was carried out based on the standard system of characterization and evaluation of rice plants. The similarity of seed characters was analyzed by using the NTSYS pc version 2.1 program and displayed in the form of a dendrogram. The results showed that most of the tested lines had the same quantitative characters as the Inpari 7 variety. The value of variability of...
Sustainability
Centella asiatica is an herbal plant with many health benefits due to the content of asiaticoside... more Centella asiatica is an herbal plant with many health benefits due to the content of asiaticoside compounds. Factors affecting asiaticoside content are altitude, soil texture, and soil nutrient status. This research aimed to identify the effect of zeolite, P2O5 fertilizer, and soil media from different altitudes on C. asiatica. The research was conducted in a greenhouse from August 2017–June 2018. The experimental design was a factorial, completely randomized design with three factors and four replications. The first factor was soil media that originated from 100, 450, and 900 m above sea level (asl), the second factor was the dose of P2O5 fertilizer (0, 27, 54, and 81 kg ha−1), and the third was the dose of zeolite (0, 3, and 6 t ha−1). The results showed that applying zeolite minerals at all altitudes increased nutrient availability and soil cation exchange capacity (CEC) by up to 70%. The novelty of this study is that the soil from an altitude of 900 m asl, with a P2O5 fertilizer...
Agriculture
Sorghum is an important food crop commodity in the midst of climate change conditions and the thr... more Sorghum is an important food crop commodity in the midst of climate change conditions and the threat of a global food crisis. Sorghum, which has an adaptive advantage to all land conditions, is suitable for use as a food substitute for rice and wheat. The purpose of this study was to evaluate the economic value, farmers’ perceptions, and specific strategies for developing sorghum in Central Java and Yogyakarta, Indonesia. The research was conducted in Wonogiri Regency, Central Java, and Gunungkidul Regency, Yogyakarta from September to November 2022. The research was carried out through the observation of 120 respondents with indicators of farming characteristics and farmers’ perceptions of sorghum development, as well as focus group discussions (FGD) and depth interviews with indicators of internal and external factors for sorghum development. The analysis used is benefit cost (BC) to evaluate the economic value of sorghum farming, the Likert scale to determine farmers’ perceptions...
Agronomy
Rice production in the karst dryland is still low, due to soil characteristics that lack nutrient... more Rice production in the karst dryland is still low, due to soil characteristics that lack nutrient availability. Meanwhile, upland rice has received less attention, and it has not been used to its full potential. This study aimed to evaluate the effect of various combinations of inorganic fertilizers, poultry manure, and upland rice varieties on the production and economic value of karst dryland in Gunungkidul, Yogyakarta. This experiment was arranged in a factorial design, with inorganic fertilizers, poultry manure, and upland rice varieties set in a randomized block design with three replications. The first factor was a combination of inorganic and organic fertilizer rates: 72 N kg ha−1 + 26 P2O5 kg ha−1 + 25 K2O ha−1 + 3 t ha−1 organic, 92 N kg ha−1 + 36 P2O5 kg ha−1 + 30 K2O kg ha−1 + 2 t ha−1 organic, 112 N kg ha−1 + 46 PO5 kg ha−1 + 35 K2O kg ha−1 + 1 t ha−1 organic. The second factor is the upland varieties of Inpago 8, Inpago 10, and Inpago 12 and lowland variety Inpari 42 Ag...
Upland rice farming is one of the sources of household income for farmers in rainfed rice fields.... more Upland rice farming is one of the sources of household income for farmers in rainfed rice fields. This study aims to determine the profits and to identify the factors that influence the profitability of upland rice farming. The research was conducted in Tegalgiri Village, Nogosari Subdistrict, Boyolali District, Central Java, in April to May 2020 with a survey method. The data were analyzed using financial analysis methods and the factors that influence profits using the profit function. The results of the analysis showed that upland rice productivity averaged 3,096 kg/ha of dry milled grain at a price of IDR 4,500/kg, so that the profit received by farmers was IDR. 7,072,000/ha with an RCR of 2.03. Factors that affect the profitability of upland rice farming are seed price, land size, farmer’s age, and working time on the land. Farmers can increase profits by reducing the number of seeds, increasing the planted area, and increasing the time worked on the land. To increase the profi...
Sustainability
The serious problems of sandy soils for crop development are low water-holding capacity, nutrient... more The serious problems of sandy soils for crop development are low water-holding capacity, nutrient retention, and low content of all nutrients. The objective of the study was to increase the nutrient content of sandy soil and evaluate nutrient types that mostly affect the high shallot yield with reasonable economic values. The field experiment was conducted on the upland sandy loam soil. Six treatments consisting of complete nutrients, N-, P-, K-, Mg- and S-omission tests were arranged in a randomly completed block design with four replicates. The observed parameters included soil physicochemical properties, tissue nutrient content, growth, yield, and input-output of shallot cultivation. The results showed that N, P, K, Mg and S application successfully increased shallot bulb, achieving 11.43 t ha−1 on sandy soil. The order of shallot tissue content was K > N > P~Mg > S, where the S, P, N, and Mg are limiting factors, as revealed by significantly lower relative yield (varyin...
Balai Besar Pengkajian dan Pengembangan Teknologi Pertanian, 2007
Notulae Scientia Biologicae, 2021
Sugarcane (Saccharum spp.) is an important tropical crop around the world, involving in Indonesia... more Sugarcane (Saccharum spp.) is an important tropical crop around the world, involving in Indonesia, however low productivity is still problem for it. The study was aimed to investigate effect of different planting methods on improving cane growth-yield performances and their partial economic analysis. The study was conducted at Gedangdowo, Jepon, Blora District, Central Java, Indonesia from 2015-2017 at initial planting (IP) to sugarcane ratoon SR-1 and SR-2. Material used was qualified seeds of PS.862 variety. Three planting methods were tested: 1) double trench system (DTS) with 50 cm distance between trench and 135 cm distance between double trenches; 2) single trench system (STS) with 120 cm distance of canter to center (CTC) and 3) STS with 110 cm distance of CTC. The experiment was arranged in randomized complete block design (RCBD) with 6 replications. Results of the study revealed that DTS 50/135 was the most appropriate planting method inducing higher cane productivity up to...
E3S Web of Conferences, 2021
The character of growth and production of hybrid maize seeds in Bima URI 20 used a three-way cros... more The character of growth and production of hybrid maize seeds in Bima URI 20 used a three-way cross. The female elders of Bima 4 variety and male elders (G180 / Mr14 x Nei 9008P). The research objective was to see the relationship between growth and three-bonded mother trees in the production of Bima 20 URI hybrid maize seeds. The research was conducted in Kendal Regency with an area of 2 hectares in MK-1 2019 through the OFCOR (On-Farm Client-Oriented Research) approach. This research uses descriptive analysis and the relationship between variables. The results showed that genetic and environmental factors influenced the growth of parent seeds. Rise of male elders 96.5%, female elders 98.6%, Tall plants 208.5 cm, male elders 148.4 cm, ear height 74.1 cm, male elders 57.9 cm, age the female flowers 50.35, and male flowers 47.8. The results of the assessment test for the parameters of ear weight assessment, seed weight per ear, and 1000 dry seed weight resulted in a value of 0.8-0.9 t...
IOP Conference Series: Earth and Environmental Science, 2018
The productivity of upland rice is still low as compared to that of irrigated rice. A cultivation... more The productivity of upland rice is still low as compared to that of irrigated rice. A cultivation effort needs to be done to increase productivity. One effort can be made by providing additional biostimulants to promote growth and beneficial bacteria. The study was conducted to determine the effect of some biostimulants on the root and population of phosphate solubilizing bacteria in upland rice (Situ Patenggang varieties). The tested treatment was a combination of biostimulants derived from seaweed, humic acid, and organic compounds. Each treatment was repeated 5 times. Parameters observed were the length and weight root, pH analysis, phosphate and C-organic levels in the soil and population of phosphate solubilizing bacteria. The results showed that the combination of biostimulant gave significant effect on plant growth parameters. The combination of a humic acid with seaweed extract gave the highest length and weight root. Humic acid also has a significant effect on the total population of phosphate solubilizing bacteria. The total population of phosphate solubilizing increased up to 150,000 cfu/mg.
Tungro merupakan salah satu penyakit penting pada padi yang menjadi kendala dalam peningkatan pro... more Tungro merupakan salah satu penyakit penting pada padi yang menjadi kendala dalam peningkatan produksi padi di Indonesia. Tungro disebabkan oleh infeksi dua virus yang berbeda yaitu Rice tungro bacilliform virus (RTBV) dan Rice tungro spherical virus (RTSV), yang keduanya hanya dapat ditularkan oleh wereng hijau terutama Nephotettix virescens (Distant) secara semipersisten. Adanya indikasi bahwa terjadi variasi virulensi virus tungro dari daerah yang berbeda dan hubungan spesifik antara ketahanan varietas dengan isolat virus tungro maka diperlukan suatu kajian tentang virulensi dan keragaman genetik virus tungro dari beberapa daerah endemis di Indonesia. Penelitian ini bertujuan untuk mendeterminasi virulensi virus tungro dari beberapa daerah endemis di Indonesia, mengkaji patogenisitas virus tungro pada beberapa varietas tahan serta mengidentifikasi keragaman molekular virus tungro. Satu varietas rentan yaitu TN1 dan sepuluh varietas tahan digunakan di dalam penelitian. Survei dan koleksi tanaman terinfeksi dilakukan di beberapa daerah endemis tungro yaitu Jabar, Jateng, DIY, Sulteng, Sulbar, Sulsel, Bali dan NTB. Penularan buatan dengan metode tabung digunakan dalam uji virulensi dan patogenisitas virus tungro. Wereng hijau hasil tangkapan dari lapangan digunakan sebagai penular. Virulensi virus tungro ditentukan berdasarkan nilai indeks penyakit (DI). Patogenisitas virus tungro diidentifikasi berdasarkan nilai insidensi tungro. Analisis PCR digunakan untuk deteksi keberadaan virus tungro pada tanaman terinfeksi di lapangan dan tanaman TN1 hasil penularan. Identifikasi keragaman molekular virus tungro dilakukan dengan analisis PCR-RFLP dan PCR-sequencing. Keragaman molekular virus tungro diidentifikasi berdasarkan pola potongan pita DNA serta variasi sekuen nukleotida dan asam amino dalam bentuk dendrogram kekerabatan. Hasil survei menunjukkan bahwa tungro ditemukan di semua daerah endemis dengan insidensi, sebaran dan visual keparahan gejala yang berbeda-beda. Virulensi virus tungro bervariasi di antara daerah endemis. Isolat Jateng merupakan isolat paling virulen dan tidak semua isolat dari daerah endemis di pulau Jawa lebih virulen dibanding isolat dari luar Jawa. Patogenisitas virus tungro dari beberapa daerah endemis bervariasi pada beberapa varietas tahan. Isolat Jateng, Sulteng dan NTB mampu menginfeksi semua varietas tahan dan patogenisitas isolat Jateng paling tinggi dibanding isolat yang lain. Keberadaan RTBV dan RTSV terdeteksi dalam setiap sampel tanaman terinfeksi di lapangan dan tanaman TN1 hasil penularan. Virus tungro dari beberapa daerah endemis di Indonesia teridentifikasi beragam pada tingkat molekular. Keragaman molekular virus tungro tidak berkorelasi dengan perbedaan geografi daerah endemis dan virulensi. Keragaman molekular kelompok isolat virus tungro dari Indonesia berbeda dengan kelompok dari luar negeri.
JURNAL PANGAN
Penggunaan pupuk organik cair (POC) merupakan salah satu alternatif untuk memenuhi kebutuhanunsur... more Penggunaan pupuk organik cair (POC) merupakan salah satu alternatif untuk memenuhi kebutuhanunsur hara makro dan mikro bagi tanaman tanpa menimbulkan pencemaran tanah. Tujuan penelitian adalahuntuk mengetahui efektivitas pupuk organik cair hasil aktivasi molekul dalam meningkatkan pertumbuhan danhasil tanaman jagung. Penelitian dilaksanakan di lahan sawah tadah hujan di Desa Gemolong, KecamatanGemolong, Kabupaten Sragen pada bulan Juli sampai dengan Oktober 2021. Rancangan penelitianmenggunakan rancangan acak kelompok dengan tujuh variasi perlakuan, setiap perlakuan diulang empatkali sehingga menghasilkan 28 unit percobaan. Pupuk yang digunakan dalam penelitian ini adalah pupukNPK Phonska (15-15-15), Urea dan POC hasil aktivasi molekul. Parameter pengamatan meliputi tinggitanaman, jumlah daun, diameter batang, panjang dan diameter tongkol, berat tongkol kupas dan beratjagung pipilan kering giling. Data hasil pengamatan diamati dengan sidik ragam dilanjutkan uji Duncan taraf5 persen....
Jurnal Penelitian Pertanian Tanaman Pangan
Jarwo super technology is a combination of superior rice farming technology, including the 2:1 pa... more Jarwo super technology is a combination of superior rice farming technology, including the 2:1 paired rows planting system, high yield potential varieties, bio-decomposers, biological fertilizers, bio-pesticides, and agricultural mechanization application. The assessment aims to determine plant diversity, production increase, and financial feasibility of jarwo super technology rice farming. The assessment was conducted on March-Juni 2017 with the "demplot" method of applied jarwo super technology in Karanganyar Regency, Central Java. Primary data is growth, production, and rice farming performance at the "demplot", as well as existing farmer data. Samples were collected purposively, it's the farmers who carried out the "demplot" and the farmers around the "demplot", which meant 30 farmers. Data were descriptively analyzed using the average value, RCR, MBCR, net profit value, and BEP. The results showed that the rice yields with jarwo super was 15.63% higher than the existing farmers. Jarwo super rice farming is more efficient and economically feasible with RCR 1.44 value. MBCR is 11.6 value, it that each additional cost of implementing jarwo super rice farming of 1.000 IDR increases income by 11.600 IDR. Proportion of costs increase in jarwo super rice farming is 350.000 IDR, but profits reached 4.077.083 IDR. Net profit value of 1.7 shows that jarwo super rice farming can increase profits. Production level and dry grain harvested price on farmers level were 30.76% higher compared to BEP production and BEP price. Jarwo super rice farming is feasible to develop that because can increase farmer's production and profits.