Browsing by Author "Y.V. Singh"

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Advancements in the utilization of Azolla-Anabaena system in relation to sustainable agricultural practices
(Indian National Science Academy, 2014) R.K. Yadav; G. Abraham; Y.V. Singh; P.K. Singh
The nitrogen fixing aquatic pteridophyte Azolla has the ability to fix atmospheric nitrogen at cheaper and faster rates due to the presence of a symbiotic cyanobacteriumAnabaena azollae. Because of this property it has been exploited widely as biofertilizer for rice plants. In addition to this it has several other uses such as food, feed, biogas producer and hyperaccumulator of heavy metals etc. Because of the multifaceted uses the promotion and use of Azolla-Anabaena system would be ideal and environment friendly in sustainable agriculture. This article provides a brief account of the importance as well as developments in the utilization of Azolla-Anabaena system in agriculture and allied sectors. © Printed in India.
Available macro nutrient status and their relationship with soil physico-chemical properties of Sri Ganganagar district of Rajasthan, India
(Journal of Pure and Applied Microbiology, 2015) Ramana; Y.V. Singh; L.K. Jat; Santosh K. Meena; Lakhapati Singh; H.S. Jatav; Alpana Paul
Soil fertility evaluation of an area is an important aspect in context of sustainable agriculture production. The macro nutrients govern the fertility of soils and control the growth and yields of crops. In the present investigation Raisingh Nagar block was selected in the district Sri Ganganagar of Rajasthan and studied the available macronutrient status and their relationship with physico-chemical properties. Sri Ganganagar district have different cropping systems and irrigated by Ganga canal and Bhakhra canal tributaries. Twenty seven representative villages were chosen and four surface soil (0-15 cm) samples collected from each village and analysed for physico-chemical properties and available N, P, K, S, exchangeable Ca and Mg status using standard laboratory procedures. Results of the study indicated that soils of Raisingh Nagar block were low to medium in organic carbon. Out of 108 collected soil samples, 97% were medium in available nitrogen and medium to high in available phosphorus, potassium and sulphur, however, available Ca and Mg found sufficient. © 2015 Journal of Pure and Applied Microbiology. All rights reserved.
Conjoint application of organic and inorganic sources of nutrients on yield, nutrient uptake and soil fertility under rice (Oryza sativa)-wheat (Triticum aestivum) system
(IndianJournals.com, 2018) S.K. Singh; Maneesh Kumar; R.P. Singh; J.S. Bohra; J.P. Srivastava; S.P. Singh; Y.V. Singh
A field experiment was conducted for three years on a sandy loam soil at Varanasi, Uttar Pradesh to study the direct effect of three sources of organic manures i.e., sewage sludge (SS), vermicompost (VC) and Sesbania green manure (GM) in combination with 75% of recommended fertilizers (RDF). Other treatments were: absolute control, 100% RDF + SZnB and customized fertilizer (CF) under rice-wheat system. Grain yield of rice in RDF + SZnB and CF was statistically at par with RDF (4.47 t ha -1 ). Supplementing 25% N through SS resulted in a significant decrease in grain yield of rice over RDF. However, grain yield of rice was at par with RDF when 25% N was supplemented through VC or GM. In following wheat, grain yield was similar under all the treatments except for absolute control (without fertilizers), which produced significantly lower yields. Application of VC or GM at 25% of recommended N could sustain the yield of rice-wheat system along with 75% RDF. Total removal of N, P, K, S, Zn and B was higher by rice than wheat, indicating its nutrients exhaustive nature. Soil pH and EC did not change significantly with the application of organic and inorganic sources of nutrients. Organic carbon content in soil increased significantly by supplementing fertilizers with organic sources. Differential pattern of nutrient build-up was recorded in the post-harvest soil samples. In post-rice soil, N, K and S did not show significant build-up while P and Zn contents increased significantly. Application of S, Zn and B significantly increased their contents in soil over RDF. In post wheat harvest soil, application of CF showed a significant increase in P content. Application of organics over three years resulted in a significant increase of Zn over 100% RDF. © 2018, IndianJournals.com. All rights reserved.
Does integrated nutrient management, enhance agricultural productivity?
(Journal of Pure and Applied Microbiology, 2015) Lokesh Kumar Jat; Y.V. Singh; Santosh Kumar Meena; Sunita Kumari Meena; Manoj Parihar; H.S. Jatav; Raj Kumar Meena; Vijay Singh Meena
Nowadays the global food demands of a growing human population and need for an eco-friendly strategy for sustainable soil-plant-microbes-environmental system, require significant attention when addressing the issue of enhancing agricultural productivity. One possible way to enhance crop productivity by chemical fertilization, but due to injudicious uses of chemical input in agricultural system detonated the soil, food, environmental and human health, chemical fertilization also increasing their prices 21st century. However, it is not possible to supply all the nutrient requirements of crops through organic manures. So by taking into consideration the above facts, integrated nutrient management (INM) has been developed. Here we discuss the role of INM in resolving these concerns, which has been proposed as a promising strategy for addressing these challenges. INM has multifaceted potential for the improvement of plant performance and resource efficiency while also enabling the protection of the environment and resource quality. Lower inputs of chemical fertilizer and therefore lower human and environmental costs (such as intensity of land use, N use, reactive N losses and GHG emissions) were achieved under advanced INM practices without any negative effect on crop yields. A comprehensive literature research revealed that INM increases crop yields by 8-150% as compared with conventional practices, increases water and nutrients use efficiency and the economic returns to farmers, while improving grain quality and soil health and sustainability. Strong and convincing evidence indicates that INM practice could be an innovative and environment friendly practice for sustainable agriculture worldwide. © 2015 Journal of Pure and Applied Microbiology. All rights reserved.
Effect of biochar on yield and heavy metals uptake in rice grown on soil amended with sewage sludge
(Journal of Pure and Applied Microbiology, 2016) H.S. Jatav; S.K. Singh; Y.V. Singh; Alpana Paul; Vipin Kumar; Preeti Singh; Hemant Jayant
A green house experiment was conducted in the net house of the Department of Soil Science and Agricultural Chemistry, Institute of Agricultural Sciences, Banaras Hindu University, Varanasi (U.P.) during kharif, 2013 to find out the effect of biochar on availability of heavy metals in soil amended with sewage sludge. There were nine treatments, consisting of six different doses of biochar as 2.5, 5.0, 7.5 10, 15, 20 t ha-1 along with 100% RDF and sewage sludge @ 30 t ha-1 applied in each biochar amended pot. In order to recover plant from initial stress, 50% recommended dose of nitrogen (RDN) was applied in each pot at 45 DAT. Results of this study showed a significant increase in test weight, grain and straw yield with application of graded level of biochar along with sewage sludge. Soil pH and electrical conductivity did not show any significant change with application of sewage sludge but with increasing levels of biochar pH of soil showed a significant increase. Application of biochar @ 20 t ha-1 along with sewage sludge (30 t ha-1) was found to increase grain yield to 2.5 times over control (T1) and 8.5 % over 100 % RDF. Application of 20 t biochar along with 30 t sewage sludge ha-1 (T9) registered lowest chromium content in grain. Uptake of Cd, Cr, Ni and Pb was found maximum both in grain and straw with application of 30 t ha-1 of sludge sewage (T3) where as minimum uptake was recorded with conjoint application of 20 t biochar and 30 t sewage sludge ha-1 (T9). © 2016 Journal of Pure and Applied Microbiology. All rights reserved.
Effect of mulching and herbicides on weeds, yield and economics of greengram (Vigna radiata L.) grown under eight-year old agrihorti system
(Gaurav Publications, 2017) S.K. Verma; S.K. Prasad; Sushil Kumar; S.B. Singh; Ravi Prakash Singh; Y.V. Singh
A field experiment with the objectives to understand the effect of mulching and herbicides on weed infestation and greengram yield involving two factors viz., mulching (no mulching, dust mulching and paddy straw mulching) and herbicidal treatments (weedy check, hand weeding at 20 and 40 days after sowing, pendimethalin pre-emergence @1000 g/ha, imazethapyr post-emergence @ 100 g/ha, and pendimethalin pre-emergence @ 1000 g/ha followed by imazethapyr post-emergence @ 100 g/ha) was undertaken in splitplot design with three replications at South Campus, Institute of Agricultural Sciences, Banaras Hindu University, Varanasi, India. Results revealed that dust mulching and sequential application of pendimethalin followed by imazethapyr recorded lower weed density, weed dry weight, nutrients depletion by weed and maximum crop yield as well as net returns over rest of the mulching and herbicidal treatments. Therefore, it is suggested that the combination of mulching and herbicides may be used for effective weed management and optimal yield of greengram under agri-horti system.
Effect of phosphorus and sulphur nutrition on yield attributes, yield of mungbean (Vigna radiata L. Wilczek)
(2012) Rakesh Kumar; Y.V. Singh; Surendra Singh; A.M. Latare; P.K. Mishra; Supriya
Increasing levels of Phosphorus and Sulphur enhanced the growth, Plant height, yield attributes like Number of nodules/plant, Dry weight of nodules, Number of pods/plant, Number of grains/pod, 1000-grain weight, grain yield, and straw yield showed maximum increase at 45 kg P2O5 ha-1 and 30 kg S ha-1, respectively. The increase in grain and straw yield with successive increase in phosphorus and sulphur levels, was more at 30 kg S ha-1 and 45 kg P2O5 kg ha-1. Overall the difference between 20 kg and 30 kg S ha-1 was not differed significantly. But the growth characters yield attributes and yield of Mungbean response significantly the highest level of phosphorus i.e. 45 kg P2O5 ha-1.
Effects of integrated nutrient management on rice yield, nutrient uptake and soil fertility status in reclaimed sodic soils
(2012) Mukesh Kumar; N.P.S. Yaduvanshi; Y.V. Singh
A Field experiment was conducted on a reclaimed sodic soil at experimental farm of Central Soil Salinity Research Institute, Karnal to assess the possibility of improving productivity of rice under two levels of fertilizer N and P applications i.e. 75% recommended NP (90 kg N + 19.5 kg P ha-1) and 100% recommended NP (120 kg N + 26 kg P ha-1) with and without organic manures i.e. 10 t ha-1 farmyard manure (FYM), 10 t ha-1 sulphitation pressmud (SPM), in situ green manuring (GM) as Sesbania aculeata and 2.5 t haha- 1 wheat residue (WR). Application of N, P and organic sources significantly increased the no. of tillers, plant height and yield of rice over control. The maximum yield of rice was obtained in 100% NP+GM (6.42 t ha-1) than 100% NP (5.31 t ha-1) and 100% NP + wheat residue (6.02 t ha-1) treatment. The 100% recommended NP with organic sources (FYM, PM, GM, and WR) recorded higher N uptake by 29.2, 29.4, 37.3 and 18.4%, respectively as compared to 100% recommended NP. The use of organic manure decreased soil pH and its combined use with fertilizers was significantly reflected in the build up of available N, P, K, organic carbon and DTPA- extractable Fe and Mn content of the soil.
Emergence of boron and sulphur deficiency in soils of chandauli, mirzapur, sant ravidas nagar and varanasi districts of eastern uttar pradesh
(IndianJournals.com, 2015) S.K. Singh; P. Dey; P.K. Sharma; Y.V. Singh; A.M. Latare; C.M. Singh; Dileep Kumar; Omkar Kumar; S.N. Yadav; S.S. Verma
Two thousand three hundred thirty four surface soil samples were collected from Chandauli, Mirzapur, Sant Ravidas Nagar and Varanasi districts of eastern Uttar Pradesh during 2011-12 under GPS and GIS based soil fertility mapping project. Analysis of these soil samples revealed the occurrence of acidic soils (pH <5.5) in Chandauli and Mirzapur districts. A wide variation in pH (4.5-10.4) indicated acidic to alkali nature of the soils in this region. These soils have electrical conductivity (EC) less than 1 dS m-1 and organic carbon (OC) content ranged from 0.6 to 13.3 g kg-1. High OC content was noticed in some Vindhyan low land soils of Chandauli and Mirzapur district. Available sulphur (S) content ranged from 0.43 to 165 mg kg-1 with a mean value of 16.10, 9.63, 13.05 and 12.36 mg kg-1 in Chandauli, Mirzapur, Sant Ravidas Nagar and Varanasi districts, respectively. The corresponding deficiency of S in soils of these districts was 39, 63, 45 and 56 per cent. Nutrient index (NI) indicated S fertility level of low to medium. Soils were also found to be highly deficient in available boron (B), with mean contents of 0.55, 0.49, 0.66 and 0.62 mg kg-1 in Chandauli, Mirzapur, Sant Ravidas Nagar and Varanasi districts, respectively showing deficiency in 55, 61, 30 and 37 per cent soil samples. High magnitude of B deficiency was noticed in soils of Vikas Khand Nawgarh (94%) followed by Rajgarh (85%) and Marihan (80%), representing the area of low pH Vindhyan soils. © 2018, IndianJournals.com. All rights reserved.
Fertilizer prescription for targeted yield of rice (Oryaza sativa l var. Saryu-52) in an inceptisol of Varanasi
(Ecological Society of India, 2014) Y.V. Singh; S.K. Singh
The development of prescription based fertilization recommendations for a given soil crop fertilizer situation takes into account the soil fertility status as well as crop needs and is thus based on balanced nutrition of crops. So, the target yield concept involves fertilizer recommendation based on yield targets to be achieved taking into consideration the contribution of soil available nutrients and fertilizer nutrients for total uptake. Three field experiments were conducted at farmers fields to check the validity of the fertilizer adjustment equation for rice crop (cv. Saryu-52) by comparing control, farmers practice, general recommended doses of fertilizers and fertilizer doses based on soil test crop response (STCR) for 45 q ha-1 for ascertaining the economics of each practice. Results of the study showed the superiority of the target yield concept over the other practices as it gave higher yield and optimal economics returns. The yield targets were achieved within reasonable limits when the fertilizer was applied on soil test basis in rice thus establishing the utility of the adjustment equations for recommending soil test based fertilizer application to the farmers.
Fertilizer Prescriptions Equation for Targeted Yield in Radish under Integrated Plant Nutrient Management System in an Inceptisol
(Indian journals, 2023) Y.V. Singh; S.K. Singh; P. Dey
A field experiment was conducted on an Inceptisol of Agricultural Research Farm, Banaras Hindu University, Varanasi during rabi 2022-23 by using integrated plant nutrient management system (IPNMS) on the basis of STCR approach. The aim of study was to develop fertilizers recommendation equation for cultivation of radish. Soil test data, fruit yield and NPK uptake by radish crop were used for achieving four important basic parameters, viz., nutrients required to produce one quintal of radish fresh fruit (NR), contribution of nutrients from fertilizers (% CS), contribution of nutrients from soil (% CF) and contribution of nutrients from organic matter-FYM (% C-OM). It was found that 0.27, 0.09 and 0.37 kg of N, P2O5 and K2O, respectively, were required for producing one quintal radish fresh fruit yield. The per cent contribution of nutrients uptake from soil, fertilizer and FYM were 17.0, 40.7 and 29.9 for N; 25.7, 52.8 and 58.1 for P2O5 and 6.68, 2.50 and 8.33 for K2O, respectively. By using these basic parameters, a ready reckoner of fertilizer doses was prepared with a wide range of soil test values for archiving desired yield targets of radish for mineral fertilizer and IPNMS situations. © 2023, Indian journals. All rights reserved.
Fertilizer recommendations developed through soil test crop response studies with integrated plant nutrient management system for field pea in an inceptisol
(IndianJournals.com, 2018) Kumar Rishi Ranjan; Y.V. Singh; S.K. Singh; P. Dey
A field experiment was conducted on Inceptisol at Agricultural Research Farm, Banaras Hindu University, Varanasi during rabi 2016 using integrated plant nutrient management system on the basis of STCR approach through which we are able to develop fertilizers recommendation equation for field pea. Soil test data, pea grain yield and NPK uptake by pea crop were used for achieving four important basic parameters viz., nutrients required to produce one quintal of pea grain (NR), contribution of nutrients from fertilizers (%CF), contribution of nutrients from soil (%CS) and contribution of nutrients from organic matter-FYM (%C-OM). It was found that 5.56, 0.79 and 3.08 kg of N, P 2 O 5 and K 2 O, respectively were required for producing one quintal pea grain yield. The per cent contribution of nutrients from soil, fertilizer and FYM were 36.2, 133.7 and 12.6 for N; 51.7, 24.8 and 3.04 for P 2 O 5 and 23.0, 71.4 and 10.0 for K 2 O, respectively. By using these basic parameters, ready reckoner of fertilizer doses was equipped for varying soil test values and desired yield targets of pea grain yield for NPK alone and NPK + FYM. © 2018, IndianJournals.com. All rights reserved.
Fertilizer requirement of lentil based on soil test crop response correlation approach in an inceptisol
(IndianJournals.com, 2018) Y.V. Singh; S.K. Singh; P. Dey
An experiment on nutrient requirement of lentil crop based on soil test crop response (STCR) correlation studies was conducted in an Inceptisol at Agricultural Research Farm, Banaras Hindu University, Varanasi during rabi 2017-18. Soil test data, lentil grain yield and NPK uptake by lentil crop were used for obtaining four important basic parameters, viz., nutrients required to produce one quintal of lentil grain (NR), contribution of nutrients from fertilizers (%CF), contribution of nutrients from soil (%CS) and contribution of nutrients from organic matter (%C-OM). It was found that 4.99, 0.90 and 2.16 kg of N, P 2 O 5 and K 2 O, respectively were required for producing one quintal lentil grain. The per cent contribution of nutrients from soil, fertilizer and FYM were 29.1, 105.1 and 7.3 for N; 65.3, 38.7 and 2.4 for P 2 O 5 ; and 14.1, 58.5 and 4.3 for K 2 O, respectively. Making use of these basic parameters, fertilizer prescription equations were developed for lentil (var. HUL-57TL) and an estimate of fertilizer doses formulated for a range of soil test values and desired yield targets for NPK alone and NPK plus FYM. © 2018, IndianJournals.com. All rights reserved.
Forms of manganese in red soils of vindhyan region
(2011) Y.V. Singh; Rajesh Kumar; Surendra Singh; Janardan Yadav; P.K. Sharma
[No abstract available]
Ground water quality assessment of different villages of chikkamagalur block in chikkamagalur district of Karnataka
(Indian journals, 2021) H.E. Sachin; Y.V. Singh; K.R. Bindu; D. Sai Pavan; R.N. Meena
Quality of the irrigation water is one of the important aspects for plant growth and it has been a major global concern in developing and developed countries. There has been a regular increase in the irrigated area in the country in the last decade that led to a higher yield potential. If poor quality of irrigation water is used it results in decreased yield. So there is a need to assess quality of the irrigation water before its use on the crops. An attempt was made to assess the ground water quality of different villages in Chikkamagalur block of Chikkamagalur district in Karnataka using various water quality parameters. The values of pH ranged from 6.3 to 8.0, while electrical conductivity ranged from 0.10 to 1.10 dS m-1. Sodium and potassium content in the irrigation water ranged from 0.13 to 3.83 and 0.10 to 5.12 meq L-1, respectively. Calcium and magnesium contents which indicate the hardness of the water and are the important cations was recorded between 0.60 and 5.85 meq L-1. Chloride concentration varied from 4.40 to 11.2 meq L-1, while bicarbonate ranged from 0.4 to 8.8 meq L-1. Based on irrigation water quality index (IWQI), it was found that 87.5% of the water samples of the study area was poor in quality and slightly unsustainable for irrigation, while 8.3% was very poor and only ~4.2% was good in quality for irrigation. © 2021, Indian journals. All rights reserved.
Groundwater quality assessment using water quality index (WQI) under GIS framework
(Springer Science and Business Media Deutschland GmbH, 2021) Arjun Ram; S.K. Tiwari; H.K. Pandey; Abhishek Kumar Chaurasia; Supriya Singh; Y.V. Singh
Groundwater is an important source for drinking water supply in hard rock terrain of Bundelkhand massif particularly in District Mahoba, Uttar Pradesh, India. An attempt has been made in this work to understand the suitability of groundwater for human consumption. The parameters like pH, electrical conductivity, total dissolved solids, alkalinity, total hardness, calcium, magnesium, sodium, potassium, bicarbonate, sulfate, chloride, fluoride, nitrate, copper, manganese, silver, zinc, iron and nickel were analysed to estimate the groundwater quality. The water quality index (WQI) has been applied to categorize the water quality viz: excellent, good, poor, etc. which is quite useful to infer the quality of water to the people and policy makers in the concerned area. The WQI in the study area ranges from 4.75 to 115.93. The overall WQI in the study area indicates that the groundwater is safe and potable except few localized pockets in Charkhari and Jaitpur Blocks. The Hill-Piper Trilinear diagram reveals that the groundwater of the study area falls under Na+-Cl−, mixed Ca2+-Mg2+-Cl− and Ca2+-HCO3- types. The granite-gneiss contains orthoclase feldspar and biotite minerals which after weathering yields bicarbonate and chloride rich groundwater. The correlation matrix has been created and analysed to observe their significant impetus on the assessment of groundwater quality. The current study suggests that the groundwater of the area under deteriorated water quality needs treatment before consumption and also to be protected from the perils of geogenic/anthropogenic contamination. © 2021, The Author(s).
Primary and cationic micronutrient status of soils in few districts of Eastern Uttar Pradesh
(IndianJournals.com, 2016) S.K. Singh; P. Dey; P.K. Sharma; Y.V. Singh; A.M. Latare; C.M. Singh; Deelip Kumar; Omkar Kumar; S.N. Yadav; S.S. Varma
Fertility status of Varanasi, Mirzapur, Sant Ravidas Nagar and Chandauli districts of Eastern Uttar Pradesh was evaluated analyzing six surface soil samples each from 89, 119, 88 and 93 villages of the districts, respectively. In general, soils were alkaline in pH, low in soluble salts and organic carbon. The range (mean) values of available N, P and K were 40 to 244 (143), 3 to 429 (34) and 46 to 823 (189) in Varanasi; 37 to 275 (128), 2 to 332 (31) and 55 to 996 (250) in Mirzapur; 47 to 200 (136), 5 to 332 (22) and 56 to 948 (174) in Sant Ravidas Nagar; 60 to 254 (147), 6 to 441 (44), and 52 to 905 (191) kg ha-1 in Chandauli district, with all the soils low in available N. In Varanasi district, 10, 36 and 54% soils were low, medium and high in P, respectively and the corresponding figures for K were 12, 73 and 15%. In Mirzapur district, soil samples under low, medium and high were 12, 37 and 51% in P and 9, 53 and 38% in K, respectively. In Sant Ravidas Nagar district, 27, 41 and 32% soil samples were low, medium and high in P, whereas 25, 63 and 12% in K, respectively. As regards to DTPA extractable Zn, Fe, Mn and Cu, the respective deficiency percentage of the soils were 46, 15, 1 and 1 for Varanasi and 30, 18, 8 and 7 for Mirzapur districts. The soils of Sant Ravidas Nagar and Chandauli districts were deficient in Zn (16 and 32%) and Fe (3 and 1%) only. © 2016, IndianJournals.com. All rights reserved.
Soil maturity assessment in indo-gangetic alluvium of bihar using soil inorganic phosphorus fractions based weathering index: A comparative approach
(IndianJournals.com, 2016) Prerna Roy; Y.V. Singh; Lokesh Kumar Jat
Different forms of inorganic soil phosphorus (P) were characterized in relation to soil properties in four pedons belonging to order Inceptisols occurring in sub-tropical agro-climatic zone III of Bihar, falling under Indo-Gangetic alluvium region of Patna district. The soil of the Indo-Gangetic alluvium are clay loam to clayey in texture, neutral to alkaline in reaction (pH 7.3-8.0) having high electrical conductivity (EC) i.e. high amount of soluble salts in soil solution. The available P content in soils of the region was low to medium range (4.13 – 13.6 mg kg-1). The organic carbon (OC) content of the region was medium (0.20 -0.65%). Based upon weighted mean (PWM) values maximum amount of P is in the form of calcium-P (Ca-P) [38.8 mg kg-1] while minimum amount of P is in the form of iron P (Fe-P) [5.16 mg kg-1] contributing 50.4 and 6.7% of total inorganic P content, respectively. The sequential extraction of inorganic soil P fractions reveal that the mean relative abundance follow the order: Ca-P (50.4) > Saloid-P (14.3%) > Occluded-P (11.8%) > Reductant-P (9.4%) > Al-P (8.2%) > Fe-P (6.7%). The PWM total P content suggested that the soils are fairly rich in P reserve ranging from 129.3 – 371.1 mg kg-1 with overall mean of 138.7 mg kg-1. The available P showed positive significant correlation with Fe-P (r = 0.58**), Ca-P (r = 0.58**) and total-P in the soil profile indicating their contribution in P availability in the area. The total P showed positive significant correlation with Al-P (r = 0.74**), Ca-P (r = 0.63**), and organic-P (r = 0.74**), indicating their dominance in contribution of P pool of the area. Maturity sequence derived from weathering index (WI) based upon inorganic soil P fractions is: P1 (most matured) > P2 > P4 > P3 (least matured). Hence, pedon-1 was found to be most matured while pedon-3 was least matured is good agreement with that obtained from soil classification indicating a close relationship between the former and the later. This study emphasized that the active form of P converts into saturated P-fractions in the soil leading to the increase in the availability of various P forms on addition of proper P-fertilizer. The inorganic soil P based weathering index is proved to be a very suitable and extremely useful index for predicting soil maturity of this region. © 2016, IndianJournals.com. All rights reserved.
Soil test based fertilization recommendations of economics and nutrient composition of mustard on inceptisol
(Editorial board of Journal of Experimental Biology and Agricultural Sciences, 2021) Kumari Kiran; Y.V. Singh; Sanjay Swami; Pavan Singh; Satya Prakash Vishwakarma; Shukritte; Shalini Sharma
During the winter (Rabi) season of 2019-20, the experiment was conducted in a farmer's field in the village of Loharapur, Varanasi, to investigate the impact of nutrient management technologies in alluvial soil with farmyard manure and various levels of inorganic fertilizers under mustard (Brassica juncea L.). Based on the STCR target yield idea, the use of plant nutrients has achieved mustard (18.0 q ha-1) and (22.0 q ha-1) outputs (soil test crop response technology). The test results indicated that the target yields were reached within + 5% of site modifications, confirming the validity of the formulae used to prescribe integrated mortar fertilizer dosages. For RDF, the highest production increases of 22 q ha-1 (37, 60%), followed by 18 q ha-1 were recorded (12.05 percent). The maximum cost-effectiveness and profit rate of 22.00 q ha-1 was the result. Organic carbon content is positive and significantly connected to the activity of the enzyme. As a consequence, the combination of NPK and FYM has been more successful in improving the productivity of rice aimed at 18 q ha-1, 22 q ha-1, and soil nutritional status than a single application of FYM or chemical fertilizer. Significant net benefits of mustard at the site (Rs 55,190.00 and Rs 38,583.00) in the treatment of plant nutrient levels in the soil test; (STCR treatment). Though fertilization enhanced mustard production above control, it was reported that using NPK and FYM together was more successful than using them alone in increasing mustard productivity. © 2021, Editorial board of Journal of Experimental Biology and Agricultural Sciences. All rights reserved.
Soil test based fertilizer prescriptions under integrated plant nutrient management system for barley in an inceptisol of eastern plain zone of Uttar Pradesh
(IndianJournals.com, 2017) Y.V. Singh; Ayesha Parveen; S.K. Singh; P. Dey
To develop fertilizer prescription equation for barley, a field experiment was conducted on Inceptisol of Agricultural Research Farm, Banaras Hindu University, Varanasi during rabi 2012-13 by using integrated plant nutrient management system on the basis of STCR approach. The barley grain and straw yield was significantly increased with the soil test values and fertilizer doses of N, P and K. Based on the experiment, the nutrient requirement for producing one tonne of barley grain was 25 kg of N, 5.60 kg of P2O5 and 29.30 kg of K2O, respectively. The per cent nutrient contribution from soil was 21.89, 38.36 and 34.27, from fertilizer 55.12, 51.52 and 90.03, and from organic manure 10.68, 3.29 and 27.64 for N, P2O5 and K2O, respectively. The basic data transformed into soil test based fertilizer adjustment equations for specific targets of barley grain yield of 4.5 t ha-1 have been calibrated based on the targeted yield concept. These fertilizer prescription equations developed for barley (var.) PL-172 can be used to estimate fertilizer doses formulated for a range of soil test values and desired yield targets under NPK alone and IPNMS (NPK plus FYM). © 2017, IndianJournals.com. All rights reserved.