Nutrient omission: An plant nutrient deficiencies assessment technology of rice (Oryza sativa) in Inceptisols (original) (raw)
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RESPONSE OF SELECTED RICE CULTIVARS TO NUTRIENT DEFICIENCY
Majority of rice farmers cannot afford fertilizers to replace nutrients removed from the soils through harvested crops and leaching. It is a global challenge of sustainable rice cultivation to find or develop rice varieties that can grow even with limited nutrients while at the same time maintaining or improving grain yields. This study tried to identify rice cultivars that can perform with half of the recommended agricultural dose of fertilizer in Bauchi, by determining the root and shoot mass and tiller numbers. The experimental materials comprised of Three rice cultivars Faro 55 (Nerica 1), Srilanka, and Faro 44 (Sippi) and Two treatments , 180kg/ha NPK i.e. the recommended agricultural dose of NPK for rice farming in Bauchi (control) and 90kg/ha NPK which is half dose. A split plot experimental design with three replications was used to generate data for this study. Data were collected on Tiller numbers and recorded weekly for each cultivar. Biomass of the shoot and root were also determined. All the cultivars showed resilience to NPK. The findings of this research suggest that NPK fertilizer input of on these cultivars could be reduced. This means that farmers could spend less money to buy fertilizer and as well reduce environmental impact due to excessive usage of the fertilizer.
Journal of Pharmacognosy and Phytochemistry, 2019
Field Experiment was conducted at instructional cum Research Farm of Rajmohini Devi College of Agriculture and Research Station, Ambikapur (C.G.) during kharif season of 2016-17 to study the effects of nutrient management on yield and yield attributes of high yielding rice (Oryza sativa L.) varieties. The experiment was laid out in a split plot design with three replications. The treatments consisted of four nutrient management practices viz. M1-RDF (100: 60: 40 kg N:P2O5:K2O ha-1), M2-150% RDF, M3-RDF (N-LCC) (Basal application of 30% N and full P2O5+ K2O and top dressing of Nitrogen as per LCC) and M4-Soil test based recommended dose for 7.0 t ha-1 grain yield(214: 42: 111 kg N:P2O5:K2O ha-1) as main plots and five rice varieties viz. Rajeshwari, Durgeshwari, Maheshwari, Karma masuri and Indira Aerobic-1 as sub plots. Among the nutrient management, highest yield attributes were recorded under treatment M4-Soil test based recommended dose for 7.0 t ha-1 grain yield (214: 42: 111 kg N:P2O5:K2O ha-1) which was superior over other rest of the nutrient management practices. Among the varieties, longest panicle (24.56 cm) was measured in variety Indira aerobic-1, highest number of grains panicle-1 (151.74) and number of filled grains panicle-1 (126.66) was recorded with Karma masuri, highest number of panicle (367.00 m-2), test weight (31.27 g), grain yield (60.83 q ha-1), straw yield (117.96 q ha-1) and harvest index (34.17%) was recorded with variety Maheshwari.
Effficacy of major nutrients in rice production
Abstract Nutrients efficacy means increased rice yield upon soil fertilization. Purposefully a particular nutrient stress was created in soil through missing element technique from complete treatment (NPKSZn) and its reserve management (addition of omitted nutrient) effect in increasing yield was considered as a measuring stick of nutrients efficacy. The omission of all NPKSZn fertilizers from complete treatment (NPKSZn) drastically decreased yield than continuously fertilized complete treatment. Similar extent of' yield increase was observed when all NPKSZn fertilizer was applied in absolute control plot indicating that every soil needs complete addition of NPKSZn fertilizers irrespective of seasons whether the plot was continuously fertilized or not. The amount of yield increase obtained upon a missing element fertilization nearly equivalent amount of yield loss as aloofness of that particular nutrient as compared to complete fertilization. It means lhc efficacy of each essential nutrient might increase yield in a similar manner depending on their magnitude of deficiency level in the soil. Continuous application of N @ 120 kg/ha in boro and 80 kg/ha in T.aman with PKSZn @ 25-33-20-05 kg/ha per season improve total soil N, S and Zn. But exchangeable K decreased compared to initial soil status. In case of P fertilization, this rate maintained the initial soil P level. However, available Zn was found well above critical level even after 45th crop as because of high initial soil available Zn level. Key Words: Nutrient efficacy, rice yield, soil fertilization
American Journal of Plant Biology
The experiment was conducted with the objectives of investigating the yield-limiting nutrients through nutrient omission trial on upland rice in 2020/2021 cropping season on the vertisols in Fogera District, Northwestern Ethiopia. The experiment was laid out in randomized complete block design with nine treatments and three replications. The treatments were Control, Recommended NP, NPKSZnB, PKSZnB (-N), NKSZnB (-P), NPSZnB (-K), NPKZnB (-S), NPKSB (-Zn) and NPKSZn (-B). Yield attributing characters of biomass yield, plant height, panicle length, effective tillers, grain and straw yields of rice were significantly influenced by the treatments. The highest grain yield (7.2 ton ha-1) was recorded from NPKSZnB treatment which was not significant with NPKSZn (-B), NPKSB (-Zn) and NPSZnB (-K). The lowest grain yield of 2.2 ton ha-1 was recorded from the control followed by omission of N, P and S nutrients. The omission of N, P and S reduced the grain and straw yields significantly over the treatment receiving all the nutrients. The omission of N reduced the grain yield by 46%, omission of P reduced the grain yield by 17% while S omission reduced grain yield by 11% over the treatment that received all nutrients. Based on percent grain yield reduction, the limiting nutrients were found in the order of N > P > S. Overall, this result shows that nitrogen phosphorus and sulfur were the most vibrant factors to increase the yield and yield component of rice.
Effect of Missing Nutrient Elements on Grain Yield of Wet Season Rice in Bangladesh
2019
Background and objective: Long-term fertility study is one of the important factors to monitor changes in yield because of different nutrient management options and cropping systems involved in Asian regions. Many short-term and long-term fertilizer trials were conducted for intensive irrigated rice cropping patterns mostly to provide fertilizer rate, but did not considered sustainable soil management for soil health. The objective of the present study was to examine the effect of missing nutrient elements for a long time on rice yield, photosynthetic rate and residual soil fertility. Materials and Methods: The experiment was initiated on a permanent layout at the Ban-gladesh Rice Research Institute (BRRI) farm, Gazipur during 2000 to 2008 in wet season. Seven treatments in randomized complete block design with four replications were imposed. Grain yield was determined at physiological maturity from three 5 m 2 areas within each plot followed by bagging and threshing. Photosynthetic was measure by Li Cor 6400 (USA) machine during study period. Soil sample was analyzed for following standard methods. Results: It was found that grain yield was in decreasing trends for the missing elements that were similar with BR 11 and BRRI dhan 31. On an average, grain yield reductions were 11.6, 7.0, 10.6, 1.1 and 3.4 percent for −N, −P, −K, −S and −Zn, than complete fertilizer treatment (NPKSZn) respectively. Under no fertilization, the ability of soil was to produce 2.9 t•ha −1 of BR11 and 3.1 t•ha −1 of BRRI dhan 31 respectively. Photosynthetic rate of rice plant was always higher in complete fertilizer treatment (NPKSZn) than missing of any nutrient element. The decrease in photosynthetic rate was more pronounced with N missing than others for both the rice varieties. Conclusion: It is concluded that balance chemical fertilizers (NPKSZn) are to be used for sustained and/or increased rice production and to maintain soil fertility.
The Pharma Innovation Journal, 2021
in Kharif season during 2018. The study was made about limiting plant nutrient based on crop response through nutrient omission technique in Alfisol of surajpur district of Chhattisgarh. For pot culture experiment rice crop variety MTU-1010 was taken as a test crop and further for field demonstration wheat crop was used in farmer field in order to have site specific nutrient management in the field. There were total 11 treatment with 3 replication under completely randomized design in pot culture experiment. It was found that there was significant reduction in straw and grain yield of rice with omission of N, P, K and Zn when compared with the treatment that received all the treatment i.e. SSNM. The test was conducted in order to check the limiting nutrient in farmer filed from where the soil sample were collected for pot culture experiment. The limited plant nutrient was corrected by application of as N-120, P-35 (80 kg P2O5), K-42 (60 kg K2O), S-30 and Zn 5 Kg. The percentage yield increase due to application of SSNM applied dose over farmer's practice dose were 33.03-40%. This result conclude that application of N, P, S and Zn in Alfisol and should be applied as per the recommended dose in order to attain maximum crop production.
Background Efficient and balanced fertilization is of paramount importance for both economic harvest and environmental aspects. Fertilizer use in Pakistan has been rising over the many years; however there is a stagnation in crop yields due to imbalanced use of fertilizers. Generally, growers are applying high quantity of nitrogen (N) but only small or sub-optimal amounts of phosphorus (P). Moreover, inter and intra specific variations exist in crop plants for their nutritional requirements based on their genetic and agronomic characteristics. Therefore, it is essential to formulate balance fertilizer dose primarily for newly evolved crop genotypes to get higher yields and to fetch maximum economic return to the farmers. Methodology A field trial was conducted at the experimental farm of Nuclear Institute of Agriculture (NIA) Tandojam, Pakistan to evaluate the effect of various N and P ratios on paddy yield and nutrient use efficiency of rice genotype (NIA-20/A). The study was planned in complete randomized block design (RCBD) with three replications. Three rates of N (90, 120, 150 kg ha
Crop Research, 2021
Excessive use of inorganic fertilizers is a major concern in paddy fields which has deteriorated soil health extensively for which a shift towards integrated nutrient management (INM) is the opt choice to feed the growing population. Therefore, a study was conducted at Agricultural College and Research Institute, Madurai, Tamil Nadu, India during 2021 to assess the effect of INM on the phyllochron and tillering in rice. Recommended rates of organic manures viz., farmyard manure (12.5 t/ha), green leaf manure (5 t/ha), poultry manure (5 t/ha), goat manure (5 t/ha) and vermicompost (5 t/ ha) were integrated with recommended dose of fertilizer @ 150: 50: 50 kg/ha NPK. Study revealed that INM through farmyard manure resulted in increased growth (plant height, total leaf area, more of leaves and tillers per plant) in lesser accumulated thermal time (21.2 °C days/leaf) required for leaf emergence @ 0.646 leaf/day. Therefore, it is evident that combining inorganic fertilizers with organic manures could enhance the growth and facilitate steady nutrition to the rice crop in addition to improved soil health over conventional method of cultivation.
crop research, 2022
Rice is the staple cereal crop of India as well as Tamil Nadu. Consumers tend to prefer local cultivars and landraces of rice which have region-specific importance. Chinnar is such a local landrace of rice that is preferred by the consumers of Madurai because of its nutritional quality. Like other cultivars, Chinnar responds to added nutrients for enhancement of growth. Integrated nutrient management (INM) is one of the suitable options in crop and soil health management where inorganic and organic sources of nutrients are used. This study was carried out during 2022 at Agricultural College and Research Institute, Madurai to evaluate the influence of INM on the growth of the Chinnar landrace of rice. Recommended dose of fertilizer (RDF) with respect to inorganic nutrient sources viz., fertilizers (Urea, SSP and MOP) @ 50% and the remaining with organic manures through poultry manure, goat manure, farm yard manure, enriched farm yard manure and vermicompost were applied as per nitrogen equivalent basis. Results revealed higher leaf area index, chlorophyll content of Chinnar at various stages of growth phase. Thus, from the study, it is concluded that INM can be preferred to obtain higher growth attributes of Chinnar rice in Madurai conditions of Tamil Nadu.