Browsing by Author "Sreejan Singh"

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Addition of Crop Residues with Different C:N Ratios on the Release Pattern of Available Nitrogen and Sulfur in Different Soils
(Taylor and Francis Ltd., 2021) Sreejan Singh; P.K. Sharma; Surendra Singh; Arvind Kumar
Mineralization of organic N and S of crop residue is an important useful tool for forecasting availability of N and S in soils. Three different soils (Vertisol, Inceptisol and Alfisol) from eastern Uttar Pradesh, India; seven crops residue, four cereals (rice, barley, maize, wheat) from irrigated area of Varanasi; and three pulses (gram lentil, pigeon pea) from rainfed area of Mirzapur were used in 90-day incubation study under controlled condition to estimate the release of soil available N and S. The experiment was laid out in a factorial completely randomized design with three replications. Total Nitrogen (N) and total Sulfur (S) contents were higher in the pulses than that of cereals. Pulses residue with the lowest C:N:S ratio (177.0:3.7:1 to 195.8:4.5:1) had significantly rapid rate of N and S release up to 45 days and then declined at 60 and 90 days. On the other hand, cereals with the highest C:N:S ratio (390.8:4.3:1 to 463.6:5.0:1) had slow release of N and S up to 45 days and then rapid released at 60 and 90 days. Among pulses residue, pigeon pea has resulted significantly higher net release of soil available N and S at day 45 to the extent of 18.4 and 78.7% in Alfisol, 17.7 and 51.2% in Inceptisol, and 15.0 and 24.1% in Vertisol, respectively, over control. Among the cereals residue, barley residue amended Alfisol had higher net increase in available N at day 90 (13.2%) followed by Inceptisol (10.8%) and Vertisol (9.9%) over control. © 2021 Taylor & Francis Group, LLC.
An assessment of soil available nutrients status of chunar area in mirzapur district of eastern uttar pradesh
(Indian journals, 2020) Lalit Pandey; Amit Prajapati; Surendra Singh; Sreejan Singh
Present investigation was conducted to assess the physicochemical properties as well as available nutrients status of alluvial soils of Chunar area in Naryanpur block of Mirzapur district of eastern part of Uttar Pradesh. Naryanpur block has total net sown area of 17376 hectares. Altogether, ninety-eight surface soil samples were collected from the farmer’s field of Chunar area covering eleven villages. The analysis of the soil samples revealed that majority of the soil samples fall under sandy clay loam to sandy loam. The soils were slightly acidic to moderately alkaline in reaction ranging from pH 6.3-8.9 with a mean pH value of 8.03. The electrical conductivity (EC) value ranged from 0.12 to 0.89 dS m-1 with a mean value of 0.30 dS m-1. Mean value of organic carbon (OC) was 4.6 g kg-1 and varied from 1.6-12.7 g kg-1, CaCO3 content varied from 0.08 to 3.4% with mean value of 1.05%. Mean values for nitrogen (N), phosphorus (P) and potassium (K) as obtained from the analysis were 229, 24.4, 232 kg ha-1, respectively. Overall, mean values for exchangeable Ca and Mg and available S were 14.5, 3.84 cmol(p+)kg-1 and 10.7 mg kg-1, respectively. The mean values for available Cu, Mn, Fe, Zn and B were 0.74, 4.99, 20.8, 0.85 and 0.43 mg kg-1, respectively. Available N, S and B were rated to be low in soils. Hence, there is need to supply these deficient nutrients through external organic and inorganic sources for sustaining crop productivity and soil health of Chunar area in Narayanpur block of Mirzapur district of eastern Uttar Pradesh. © 2020, Indian journals. All rights reserved.
Effect of Application of Graded Levels of Lime Requirement on the Availability of Phosphorus and Sulphur in Acidic Soils of Vindhyan Region
(Indian journals, 2023) Prakash Singh Bist; Surendra Singh; Sreejan Singh
[No abstract available]
Effect of Sulphur and Boron Application on Yield Attributes and Yield of Lentil (Lens culinaris Medic) in Upland Red Soil of Vindhyan Region
(Indian journals, 2022) Saroj Choudhary; Surendra Singh; Sreejan Singh
[No abstract available]
Forms of Acidity and Lime Requirement of Vindhyan Soils in Eastern Uttar Pradesh
(Indian journals, 2023) Sreejan Singh; P.K. Sharma; Surendra Singh
[No abstract available]
Nitrogen and sulphur release from added millets and oilseeds residues in indo-gangetic black and alluvial soils of varanasi
(Indian journals, 2021) Sreejan Singh; P.K. Sharma; Surendra Singh
[No abstract available]
Release of Carbon Dioxide and Water-Soluble Carbon Amended with Rice and Wheat Residues in an Inceptisols of Varanasi
(Taylor and Francis Ltd., 2024) Pragnya Paramita Patel; Sreejan Singh; Surendra Singh; Dibyajyoti Panda
Crop residues are the main organic source of nutrients in agricultural soils. The active pool of soil organic carbon plays a dominant role in crop production and soil health. Rice and wheat residues were used in 90 days incubation study under controlled conditions (25°C temperature and maximum water-holding capacity) to estimate the release of carbon dioxide and water-soluble carbon in an Indo-Gangetic alluvial soil (Inceptisols) of Varanasi. The experiment was laid out in a factorial completely randomized design with three replications. The rice and wheat residues showed a wide variation in the content of their total carbon (TC), total nitrogen (TN), total phosphorus (TP) and total sulfur (TS). Out of the two crop residues added to the soil, rice residue had higher carbon dioxide-carbon (CO2-C) release than that of the wheat residue over control. Results revealed that conjunctive application of rice residue along with urea (20 kg N ha−1) and Trichoderma viride (10 kg ha−1) had resulted in a higher content of CO2-C (7.44 mg per 100 g per day) at 90 days of the incubation period. The amount of CO2 (mg) released, increases with a combination of crop residues with urea (20 kg N ha−1) and Trichoderma viride (10 kg ha−1) up to 90 days over control. The highest release of CO2 (204.70 mg) was recorded with rice residue treated with urea (20 kg N ha−1) and Trichoderma viride (10 kg ha−1). The study also revealed that the release of water-soluble carbon decreases with an increase in the incubation period irrespective of treatment. At 90 days of the incubation period, the control without any crop residue addition has the highest water-soluble carbon content (459.75 µg/g). The present study indicates that the incorporation of rice and wheat residues along with urea and supplemental decomposers (Trichoderma viride) has the potential to release adequately active organic carbon pool parameters such as CO2 and water-soluble carbon in an Inceptisols of Varanasi region of India. © 2024 Taylor & Francis Group, LLC.
Release of Phosphorus and Potassium from Different Crop Residues in Contrasting Soils of Eastern Uttar Pradesh
(Indian journals, 2021) Sreejan Singh; P.K. Sharma; Surendra Singh
[No abstract available]