Murali Arthanari | Tamil Nadu Agricultural University (original) (raw)
Papers by Murali Arthanari
Tree Genetics and Molecular Breeding, 2013
Investigations were carried out with 15 seed sources of Caesalpinia sappan assembled from Kerala ... more Investigations were carried out with 15 seed sources of Caesalpinia sappan assembled from Kerala and Tamil Nadu to study the seed source variation at Forest College and Research Institute, Mettupalayam. Physical characters of pod and seed expressed wider variability in the evaluated pod and seed characteristics among the evaluated 15 seed sources. Nagercoil seed source recorded the highest values on pod length. The other evaluated pod characters also expressed variability while the maximum expression was with seed number per pod and the minimum with pod width and superior variability expression with Nagercoil for pod length, Pariyaram, Kannur and Nagercoil for pod breadth, Vellanikarai (pod fresh weight), Palakkad (seed number per pod), Thalavaadi and Nallekkadu (pod to seed ratio). Variation in seed characteristics among seed sources; Pariyaram (seed breadth), Palakkad (100 seed weigth) and Pariyaram (germination per cent) recorded maximum variability for seed physical characters. However the present study expressed that the evaluated pod traits could not be achieved in a single seed sources except for 100 seeds weight.
Journal of Plant Protection Research, 2010
Isolation, Identification and Pathogenicity Assessment of a new Isolate of Entomopathogenic Fungu... more Isolation, Identification and Pathogenicity Assessment of a new Isolate of Entomopathogenic Fungus, Beauveria Bassiana in IranA new isolate (BEH) of entomopathogenic fungus,Beauveria bassianawas isolated from soil using DOC2 selective medium. This isolate was characterized by conidiophores consisting of whorls and dense clusters of short conidiophorous cells with one-celled spherical conidia. Conidial length and width were 2.27±0.22 μm and 1.85±0.32 μm, respectively with length/width ratio of 1.23. Colonies on SDYA medium were normally white to pale yellow and sometimes red pigmented in reverse. Because of importance of this pathogen in biocontrol programs around the world and difficulties with morphological identification, a molecular technique was developed to assist complementary identification of the fungus. Pr1, a pathogenicity-related alkaline cuticle-degrading serine protease, with defined sequence inB. bassianawas amplified using PCR technique. The presence of this gene in i...
International Journal of Plant and Soil Science, Jun 27, 2023
Journal of Agrometeorology, Dec 1, 2002
Ecology, Environment and Conservation, Jun 17, 2022
The Pharma Innovation Journal, 2021
The Indian Journal of Agricultural Sciences
A field experiment was conducted at Tamil Nadu Agricultural University, Coimbatore during kharif ... more A field experiment was conducted at Tamil Nadu Agricultural University, Coimbatore during kharif (rainy) and rabi (winter) seasons of 2022 and 2023 to evaluate the efficiency, energy and economics of drone-based herbicide application in direct-seeded rice (Oryza sativa L.). The study was carried out with application of pre-emergence, early post-emergence and post-emergence herbicides using drone and knapsack sprayer to assess the weed control efficiency. Treatments included pretilachlor followed by (fb) application of post-emergence herbicides, such as bispyribacsodium (Na), fenoxyprop ethyl + carfentrazone ethyl and early post-emergence herbicides, such as bispyribac-Na, fenoxyprop ethyl + carfentrazone ethyl, bispyribac-Na fb post-emergence of fenoxyprop ethyl + carfentrazone ethyl, weed-free check and unweeded check. Application of pretilachlor fb bispyribac-Na using knapsack sprayer reduced weed density from 83 to 87% and weed dry weight from 81 to 83% over unweeded plot. Moreov...
Madras Agricultural Journal
Field investigation was carried out to evaluate the new formulation of bispyribac sodium 10 SC in... more Field investigation was carried out to evaluate the new formulation of bispyribac sodium 10 SC in direct seeded rice during rabi (August to February) of 2011-12 at Tamil Nadu Agricultural University, Coimbatore. The experiment was laid out in a randomized block design and replicated thrice with the objective to find out the effect of bispyribac sodium 10% SC on weed control efficiency and yield of direct seeded rice. The treatments consist of EPOE application of bispyribac sodium 10% SC at 10, 20, 40 g ha -1 , nominee gold 20 g ha -1 (bispyribac sodium 10 SC) on 15 DAS and PE butachlor 1.5 kg ha -1 , anilophos 0.45 kg ha -1 , pretilachlor S 0.45 kg ha-1 on 3 DAS + HW on 40 DAS and power weeder, conoweeder weeding at 20 and 40 DAS, HW twice on 20 and 40 DAS and unweeded control. Application of pretilachlor S 0.45 kg ha -1 on 3 DAS + HW on 40 DAS registered lower weed density and dry weight at 20 DAS but during the later stages of crop growth EPOE application of bispyribac sodium 10% ...
Emirates Journal of Food and Agriculture
Field experiments were conducted during Rabi 2018-19 (September to January) and Kharif 2019 (May ... more Field experiments were conducted during Rabi 2018-19 (September to January) and Kharif 2019 (May to September). Medium duration rice cv. CO(R) 51 was used as a test variety at Tamil Nadu Agricultural University, Coimbatore, India to study the effect of Triafamone on broad spectrum weed control in transplanted rice. Triafamone was applied at two times. First set of treatments (30, 40,50 and 100 g/ha) applied two to three leaf stage of weeds and second set treatments imposed (30, 40,50 and 100 g/ha) at three days after transplanting of the rice crop. These treatments were compared with Pyrazosulfuron ethy 10% WP @ 15 g/ha, Pretilachlor 5% EC @ 750 g/ha, hand weeding @ 20 and 40 days after transplanting and unweeded control. The major grasses were Echinochloa crus-galli (L.) and E. colonum (L.) while the sedge weed included Cyperus nutans (L.). Among the broad leaved weeds Eclipta alba (L.) and Bergia ammanioides were the dominant species. In both the seasons of the study, lesser popul...
Journal of Applied and Natural Science, Dec 19, 2022
![Research paper thumbnail of Screening of Herbicides in Transplanted Finger Millet [Eleusine coracana (L.) Gaertn]](https://attachments.academia-assets.com/110375816/thumbnails/1.jpg)
](Indian Journal Of Agricultural Research
Background: Weeds smother the finger millet due to crop’s slow growth during the initial stages w... more Background: Weeds smother the finger millet due to crop’s slow growth during the initial stages which reduces the yield substantially by 5-70%. Intensive use of herbicides is gaining popularity among the farmers now a days due to its effectiveness in controlling weeds, timeliness and reduced cost. Methods: The current field experiment was conducted at Tamil Nadu Agricultural university during kharif season, 2021 under irrigated condition with twelve herbicide treatments laid out in Randomized Complete Block Design (RCBD) with three replications. Result: Pre-emergence application of pyrazosulfuron ethyl 15 g ha-1 significantly reduced the total weed density and total weed dry weight at 90 days after transplanting over all the other herbicides used. This treatment also considerably improved the plant parameters such as plant height, total number of tillers, plant dry matter production, Grain and stover yield and yield parameters such as productive tillers, ear head weight of transplan...
International Journal of Plant & Soil Science
A field experiment was conducted in farmer’s field at Narasipuram block, Coimbatore, Tamil Nadu d... more A field experiment was conducted in farmer’s field at Narasipuram block, Coimbatore, Tamil Nadu during summer season, 2021-22, to study the influence of weed management practices and bio-fertilizers with and without FYM on weed flora, growth and yield of blackgram. The experiment was laid out in split plot design with three replications. Treatments consisted of four weed management practices as main plots, viz., M1- PE Pendimethalin 30% EC 1 kg ha-1 sprayed at 3 DAS, M2 - EPoE imazethapyr 10% SL 50 g ha-1, M3 – EPoE Quizalofop-p-ethyl 5% EC 50 g ha-1applied at 10 DAS and M4 - two hand weeding (15 and 30 DAS) and four different treatments of bio-fertilizers with and without FYM viz., S1 – Rhizobium + Phosphobacteria, S2 – Rhizobium + Phosphobacteria + AM fungi, S3 – S1 + FYM, S4 – S2 + FYM and S5 - control. The results revealed that interaction effect of pendimethalin 1 kg ha-1 (M4) and Rhizobium + Phosphobacteria + AM fungi with FYM (S4) recorded maximum growth and yield parameters ...
International Journal of Plant & Soil Science
Field experiment was conducted at Tamil Nadu Agricultural University, Coimbatore in January 2022 ... more Field experiment was conducted at Tamil Nadu Agricultural University, Coimbatore in January 2022 by seven different leaf extracts as an allelopathical compound in order to choose the best alternative to chemical herbicides by non-chemical weed management approach in little millet owing to the great surge of organic farming in millet production nowadays. Screening trail has been conducted to observe the effect of leaf extracts (Tamarind,Casuarina,Castor,Papaya, Teak,Pine,Nerium) with 20 & 30% concentration on weed control. This experiment laid out in a randomized block design and was replicated twice with 15 different treatments. The findings of this investigation demonstrated that the pre emergence (3 DAS) application of Tamarind leaf extract (30%), Casuarina leaf extract (30%). Castor leaf extract (30%). Papaya leaf extract (30%). Teak leaf extract (30%). Pine leaf extract (30%) and Nerium leaf extract (30%) pronounced the lowest weed density and highest weed control efficiency amo...
International Journal of Plant & Soil Science, 2022
Weed causes heavy yield loss when it competes with crops especially for light, water, nutrient an... more Weed causes heavy yield loss when it competes with crops especially for light, water, nutrient and space. In crop production, weed management is a necessary operation to get a higher yield. Manual weeding operation is an easy and environmentally friendly method but it increases the cost of cultivation and makes the crop production practice a non-profitable business venture. Under this situation, the herbicide can be used as the most practical and effective alternative means of weed control. In intensive agriculture heavy use of herbicide affects the growth and biochemical composition of the crop. The objective of this study was to find out the effect of pre-plant soil application of post emergence glyphosate on the germination, growth and biochemical composition of blackgram seedlings. Results showed that glyphosate 1000 ppm did not significantly affect the germination of blackgram seeds. However, the higher concentration of 1000 ppm affects the root (1.08 cm) and shoot length (6.16...
Journal of entomology and zoology studies, 2018
Journal of entomology and zoology studies, 2017
An attempt was made in the present investigation to study the effect of new herbicide combination... more An attempt was made in the present investigation to study the effect of new herbicide combination molecules like bispyribac sodium, metamifop, almix, clincher on rhizosphere soil microflora of direct seeded rice (DSR) at the research farm of Wetland Farm, Tamil Nadu Agricultural University, Coimbatore, India. The present study results showed that the herbicide treatments significantly inhibited the development of microbial populations in the soil and the degree of inhibition varied with the types of herbicide. Increasing trend of inhibition on growth of microbial populations was observed from the initial effect until 30 days after herbicide spray (DAHS). No inhibition was observed at 30 DAHS to harvest stage. A gradual raise was observed in the population of micro-organism like bacteria, fungi and actinomycetes with the application of herbicide combination in the rhizosphere soil of DSR. Among different herbicide treated plots, post emergence (POE) application of bispyribac sodium 4...
To evaluate the effect of different crop geometry without altering plant population and integrate... more To evaluate the effect of different crop geometry without altering plant population and integrated weed management methods on productivity and profitability of maize under irrigated condition and also to study the residual effect of weed management practices on succeeding Bengal gram, the field experiment was conducted in Eastern block, Department of Agronomy, TNAU, Coimbatore during Kharif and Rabi season of 2018-19. The experiment result showed that normal row planting 60 cm x 25 cm have higher growth and yield attributes which is statistically on par with normal row planting 75 cm x 20 cm. Among weed control treatments, pre-emergence (PE) application of atrazine at 1 kg ai/ha + hand weeding at 35 DAS resulted higher grain yield (7.85 t/ha) and it is statistically on par with PE atrazine application at 1 kg ai/ha + twin wheel hoe weeder weeding at 35 DAS (7.61 t/ha). From this study, it may concluded that adoption of normal row planting at 75 cm x 20 cm with weed control practice ...
Indian Journal of Plant Protection, 2014
The study on pre-plant and pre-emergence herbicide weed management in transplanted rice during Ra... more The study on pre-plant and pre-emergence herbicide weed management in transplanted rice during Rabi 2011–12 at Tamil Nadu Agricultural University, Coimbatore revealed that pre-plant application of glyphosate 0.75 kg a.i. ha−1 recorded higher mean grain yield (5766 kg ha−1), lower weed density (3.2, 6.7 and 5.6 m−2 at 20, 40 and 60 DAT), dry weight (2.0, 3.7 and 4.1 g m−2 at 20, 40 and 60 DAT) and weed control efficiency (71, 5, 69.5 and 69.2% at 20, 40 and 60 DAT) compared to non application of glyphosate. The application of pre-plant glyphosate eliminated most existing vegetation and prevented weed establishment. In main field among the different treatments early post emergence (EPOE) application of Bensulfuron methyl+ pretilachloar (6.6 GR) at 0.06+0.60 kg/ha recorded significantly higher grain yield (6450 kg ha−1), straw yield (8614 kg ha−1) through better weed control efficiency as indicated by lower weed density (4.3, 5.5 and 4.6 m−2 at 20, 40 and 60 DAT), reduced weed dry matt...
Field experiment was conducted at Tamil Nadu Agricultural University, Coimbatore during kharif 20... more Field experiment was conducted at Tamil Nadu Agricultural University, Coimbatore during kharif 2014 to evolve weed management through herbicide and hand weeding for higher productivity in kodo millet. The experiment was laid out in randomized block design with three replications. The treatments comprised of different herbicides (pendimethalin, isoproturon and bensulfuron + pretilachlor) with or without hand weeding and mechanical weeder weeding. Pre emergence application of isoproturon 750g/ha followed by hand weeding on 40 days after sowing can keep the weed density and dry weight below the economic threshold level and increase the weed control efficiency under irrigated kodomillet without any phytotoxicity to the crop.
International Journal of Current Microbiology and Applied Sciences, 2020
Herbicides have become one of the most important components for efficient weed control and in tur... more Herbicides have become one of the most important components for efficient weed control and in turn for increasing the agricultural production and to maintain the non-cropped area free from weeds and pests. Herbicides use is increasing throughout the globe due to increasing labour cost, choice of application of herbicides, quick weed control in crop and non-cropped areas. Globally consumption of herbicides is 44% followed by the insecticides (22%), fungicides (27%) and others (7%). In India, herbicide use has increased to 30% during the last 10 years in managing weeds in the country (Sondhia, 2014). As herbicides are chemical in nature and thus excessive and repeated use may pose residue problems, phyto-toxicity to crop plants, residual effect on susceptible intercrops or succeeding crops or non targets organisms and ultimately health hazards due to accumulation of herbicide residues in the soil. In general, herbicides have been International Journal of Current Microbiology and Appli...
Tree Genetics and Molecular Breeding, 2013
Investigations were carried out with 15 seed sources of Caesalpinia sappan assembled from Kerala ... more Investigations were carried out with 15 seed sources of Caesalpinia sappan assembled from Kerala and Tamil Nadu to study the seed source variation at Forest College and Research Institute, Mettupalayam. Physical characters of pod and seed expressed wider variability in the evaluated pod and seed characteristics among the evaluated 15 seed sources. Nagercoil seed source recorded the highest values on pod length. The other evaluated pod characters also expressed variability while the maximum expression was with seed number per pod and the minimum with pod width and superior variability expression with Nagercoil for pod length, Pariyaram, Kannur and Nagercoil for pod breadth, Vellanikarai (pod fresh weight), Palakkad (seed number per pod), Thalavaadi and Nallekkadu (pod to seed ratio). Variation in seed characteristics among seed sources; Pariyaram (seed breadth), Palakkad (100 seed weigth) and Pariyaram (germination per cent) recorded maximum variability for seed physical characters. However the present study expressed that the evaluated pod traits could not be achieved in a single seed sources except for 100 seeds weight.
Journal of Plant Protection Research, 2010
Isolation, Identification and Pathogenicity Assessment of a new Isolate of Entomopathogenic Fungu... more Isolation, Identification and Pathogenicity Assessment of a new Isolate of Entomopathogenic Fungus, Beauveria Bassiana in IranA new isolate (BEH) of entomopathogenic fungus,Beauveria bassianawas isolated from soil using DOC2 selective medium. This isolate was characterized by conidiophores consisting of whorls and dense clusters of short conidiophorous cells with one-celled spherical conidia. Conidial length and width were 2.27±0.22 μm and 1.85±0.32 μm, respectively with length/width ratio of 1.23. Colonies on SDYA medium were normally white to pale yellow and sometimes red pigmented in reverse. Because of importance of this pathogen in biocontrol programs around the world and difficulties with morphological identification, a molecular technique was developed to assist complementary identification of the fungus. Pr1, a pathogenicity-related alkaline cuticle-degrading serine protease, with defined sequence inB. bassianawas amplified using PCR technique. The presence of this gene in i...
International Journal of Plant and Soil Science, Jun 27, 2023
Journal of Agrometeorology, Dec 1, 2002
Ecology, Environment and Conservation, Jun 17, 2022
The Pharma Innovation Journal, 2021
The Indian Journal of Agricultural Sciences
A field experiment was conducted at Tamil Nadu Agricultural University, Coimbatore during kharif ... more A field experiment was conducted at Tamil Nadu Agricultural University, Coimbatore during kharif (rainy) and rabi (winter) seasons of 2022 and 2023 to evaluate the efficiency, energy and economics of drone-based herbicide application in direct-seeded rice (Oryza sativa L.). The study was carried out with application of pre-emergence, early post-emergence and post-emergence herbicides using drone and knapsack sprayer to assess the weed control efficiency. Treatments included pretilachlor followed by (fb) application of post-emergence herbicides, such as bispyribacsodium (Na), fenoxyprop ethyl + carfentrazone ethyl and early post-emergence herbicides, such as bispyribac-Na, fenoxyprop ethyl + carfentrazone ethyl, bispyribac-Na fb post-emergence of fenoxyprop ethyl + carfentrazone ethyl, weed-free check and unweeded check. Application of pretilachlor fb bispyribac-Na using knapsack sprayer reduced weed density from 83 to 87% and weed dry weight from 81 to 83% over unweeded plot. Moreov...
Madras Agricultural Journal
Field investigation was carried out to evaluate the new formulation of bispyribac sodium 10 SC in... more Field investigation was carried out to evaluate the new formulation of bispyribac sodium 10 SC in direct seeded rice during rabi (August to February) of 2011-12 at Tamil Nadu Agricultural University, Coimbatore. The experiment was laid out in a randomized block design and replicated thrice with the objective to find out the effect of bispyribac sodium 10% SC on weed control efficiency and yield of direct seeded rice. The treatments consist of EPOE application of bispyribac sodium 10% SC at 10, 20, 40 g ha -1 , nominee gold 20 g ha -1 (bispyribac sodium 10 SC) on 15 DAS and PE butachlor 1.5 kg ha -1 , anilophos 0.45 kg ha -1 , pretilachlor S 0.45 kg ha-1 on 3 DAS + HW on 40 DAS and power weeder, conoweeder weeding at 20 and 40 DAS, HW twice on 20 and 40 DAS and unweeded control. Application of pretilachlor S 0.45 kg ha -1 on 3 DAS + HW on 40 DAS registered lower weed density and dry weight at 20 DAS but during the later stages of crop growth EPOE application of bispyribac sodium 10% ...
Emirates Journal of Food and Agriculture
Field experiments were conducted during Rabi 2018-19 (September to January) and Kharif 2019 (May ... more Field experiments were conducted during Rabi 2018-19 (September to January) and Kharif 2019 (May to September). Medium duration rice cv. CO(R) 51 was used as a test variety at Tamil Nadu Agricultural University, Coimbatore, India to study the effect of Triafamone on broad spectrum weed control in transplanted rice. Triafamone was applied at two times. First set of treatments (30, 40,50 and 100 g/ha) applied two to three leaf stage of weeds and second set treatments imposed (30, 40,50 and 100 g/ha) at three days after transplanting of the rice crop. These treatments were compared with Pyrazosulfuron ethy 10% WP @ 15 g/ha, Pretilachlor 5% EC @ 750 g/ha, hand weeding @ 20 and 40 days after transplanting and unweeded control. The major grasses were Echinochloa crus-galli (L.) and E. colonum (L.) while the sedge weed included Cyperus nutans (L.). Among the broad leaved weeds Eclipta alba (L.) and Bergia ammanioides were the dominant species. In both the seasons of the study, lesser popul...
Journal of Applied and Natural Science, Dec 19, 2022
Indian Journal Of Agricultural Research
Background: Weeds smother the finger millet due to crop’s slow growth during the initial stages w... more Background: Weeds smother the finger millet due to crop’s slow growth during the initial stages which reduces the yield substantially by 5-70%. Intensive use of herbicides is gaining popularity among the farmers now a days due to its effectiveness in controlling weeds, timeliness and reduced cost. Methods: The current field experiment was conducted at Tamil Nadu Agricultural university during kharif season, 2021 under irrigated condition with twelve herbicide treatments laid out in Randomized Complete Block Design (RCBD) with three replications. Result: Pre-emergence application of pyrazosulfuron ethyl 15 g ha-1 significantly reduced the total weed density and total weed dry weight at 90 days after transplanting over all the other herbicides used. This treatment also considerably improved the plant parameters such as plant height, total number of tillers, plant dry matter production, Grain and stover yield and yield parameters such as productive tillers, ear head weight of transplan...
International Journal of Plant & Soil Science
A field experiment was conducted in farmer’s field at Narasipuram block, Coimbatore, Tamil Nadu d... more A field experiment was conducted in farmer’s field at Narasipuram block, Coimbatore, Tamil Nadu during summer season, 2021-22, to study the influence of weed management practices and bio-fertilizers with and without FYM on weed flora, growth and yield of blackgram. The experiment was laid out in split plot design with three replications. Treatments consisted of four weed management practices as main plots, viz., M1- PE Pendimethalin 30% EC 1 kg ha-1 sprayed at 3 DAS, M2 - EPoE imazethapyr 10% SL 50 g ha-1, M3 – EPoE Quizalofop-p-ethyl 5% EC 50 g ha-1applied at 10 DAS and M4 - two hand weeding (15 and 30 DAS) and four different treatments of bio-fertilizers with and without FYM viz., S1 – Rhizobium + Phosphobacteria, S2 – Rhizobium + Phosphobacteria + AM fungi, S3 – S1 + FYM, S4 – S2 + FYM and S5 - control. The results revealed that interaction effect of pendimethalin 1 kg ha-1 (M4) and Rhizobium + Phosphobacteria + AM fungi with FYM (S4) recorded maximum growth and yield parameters ...
International Journal of Plant & Soil Science
Field experiment was conducted at Tamil Nadu Agricultural University, Coimbatore in January 2022 ... more Field experiment was conducted at Tamil Nadu Agricultural University, Coimbatore in January 2022 by seven different leaf extracts as an allelopathical compound in order to choose the best alternative to chemical herbicides by non-chemical weed management approach in little millet owing to the great surge of organic farming in millet production nowadays. Screening trail has been conducted to observe the effect of leaf extracts (Tamarind,Casuarina,Castor,Papaya, Teak,Pine,Nerium) with 20 & 30% concentration on weed control. This experiment laid out in a randomized block design and was replicated twice with 15 different treatments. The findings of this investigation demonstrated that the pre emergence (3 DAS) application of Tamarind leaf extract (30%), Casuarina leaf extract (30%). Castor leaf extract (30%). Papaya leaf extract (30%). Teak leaf extract (30%). Pine leaf extract (30%) and Nerium leaf extract (30%) pronounced the lowest weed density and highest weed control efficiency amo...
International Journal of Plant & Soil Science, 2022
Weed causes heavy yield loss when it competes with crops especially for light, water, nutrient an... more Weed causes heavy yield loss when it competes with crops especially for light, water, nutrient and space. In crop production, weed management is a necessary operation to get a higher yield. Manual weeding operation is an easy and environmentally friendly method but it increases the cost of cultivation and makes the crop production practice a non-profitable business venture. Under this situation, the herbicide can be used as the most practical and effective alternative means of weed control. In intensive agriculture heavy use of herbicide affects the growth and biochemical composition of the crop. The objective of this study was to find out the effect of pre-plant soil application of post emergence glyphosate on the germination, growth and biochemical composition of blackgram seedlings. Results showed that glyphosate 1000 ppm did not significantly affect the germination of blackgram seeds. However, the higher concentration of 1000 ppm affects the root (1.08 cm) and shoot length (6.16...
Journal of entomology and zoology studies, 2018
Journal of entomology and zoology studies, 2017
An attempt was made in the present investigation to study the effect of new herbicide combination... more An attempt was made in the present investigation to study the effect of new herbicide combination molecules like bispyribac sodium, metamifop, almix, clincher on rhizosphere soil microflora of direct seeded rice (DSR) at the research farm of Wetland Farm, Tamil Nadu Agricultural University, Coimbatore, India. The present study results showed that the herbicide treatments significantly inhibited the development of microbial populations in the soil and the degree of inhibition varied with the types of herbicide. Increasing trend of inhibition on growth of microbial populations was observed from the initial effect until 30 days after herbicide spray (DAHS). No inhibition was observed at 30 DAHS to harvest stage. A gradual raise was observed in the population of micro-organism like bacteria, fungi and actinomycetes with the application of herbicide combination in the rhizosphere soil of DSR. Among different herbicide treated plots, post emergence (POE) application of bispyribac sodium 4...
To evaluate the effect of different crop geometry without altering plant population and integrate... more To evaluate the effect of different crop geometry without altering plant population and integrated weed management methods on productivity and profitability of maize under irrigated condition and also to study the residual effect of weed management practices on succeeding Bengal gram, the field experiment was conducted in Eastern block, Department of Agronomy, TNAU, Coimbatore during Kharif and Rabi season of 2018-19. The experiment result showed that normal row planting 60 cm x 25 cm have higher growth and yield attributes which is statistically on par with normal row planting 75 cm x 20 cm. Among weed control treatments, pre-emergence (PE) application of atrazine at 1 kg ai/ha + hand weeding at 35 DAS resulted higher grain yield (7.85 t/ha) and it is statistically on par with PE atrazine application at 1 kg ai/ha + twin wheel hoe weeder weeding at 35 DAS (7.61 t/ha). From this study, it may concluded that adoption of normal row planting at 75 cm x 20 cm with weed control practice ...
Indian Journal of Plant Protection, 2014
The study on pre-plant and pre-emergence herbicide weed management in transplanted rice during Ra... more The study on pre-plant and pre-emergence herbicide weed management in transplanted rice during Rabi 2011–12 at Tamil Nadu Agricultural University, Coimbatore revealed that pre-plant application of glyphosate 0.75 kg a.i. ha−1 recorded higher mean grain yield (5766 kg ha−1), lower weed density (3.2, 6.7 and 5.6 m−2 at 20, 40 and 60 DAT), dry weight (2.0, 3.7 and 4.1 g m−2 at 20, 40 and 60 DAT) and weed control efficiency (71, 5, 69.5 and 69.2% at 20, 40 and 60 DAT) compared to non application of glyphosate. The application of pre-plant glyphosate eliminated most existing vegetation and prevented weed establishment. In main field among the different treatments early post emergence (EPOE) application of Bensulfuron methyl+ pretilachloar (6.6 GR) at 0.06+0.60 kg/ha recorded significantly higher grain yield (6450 kg ha−1), straw yield (8614 kg ha−1) through better weed control efficiency as indicated by lower weed density (4.3, 5.5 and 4.6 m−2 at 20, 40 and 60 DAT), reduced weed dry matt...
Field experiment was conducted at Tamil Nadu Agricultural University, Coimbatore during kharif 20... more Field experiment was conducted at Tamil Nadu Agricultural University, Coimbatore during kharif 2014 to evolve weed management through herbicide and hand weeding for higher productivity in kodo millet. The experiment was laid out in randomized block design with three replications. The treatments comprised of different herbicides (pendimethalin, isoproturon and bensulfuron + pretilachlor) with or without hand weeding and mechanical weeder weeding. Pre emergence application of isoproturon 750g/ha followed by hand weeding on 40 days after sowing can keep the weed density and dry weight below the economic threshold level and increase the weed control efficiency under irrigated kodomillet without any phytotoxicity to the crop.
International Journal of Current Microbiology and Applied Sciences, 2020
Herbicides have become one of the most important components for efficient weed control and in tur... more Herbicides have become one of the most important components for efficient weed control and in turn for increasing the agricultural production and to maintain the non-cropped area free from weeds and pests. Herbicides use is increasing throughout the globe due to increasing labour cost, choice of application of herbicides, quick weed control in crop and non-cropped areas. Globally consumption of herbicides is 44% followed by the insecticides (22%), fungicides (27%) and others (7%). In India, herbicide use has increased to 30% during the last 10 years in managing weeds in the country (Sondhia, 2014). As herbicides are chemical in nature and thus excessive and repeated use may pose residue problems, phyto-toxicity to crop plants, residual effect on susceptible intercrops or succeeding crops or non targets organisms and ultimately health hazards due to accumulation of herbicide residues in the soil. In general, herbicides have been International Journal of Current Microbiology and Appli...