Phosphorus Fraction Distribution in Soils of three Rice-Growing Blocks of Mayurbhanj District in Odisha State, India

In the month of June in three distinct blocks of the Mayurbhanj district, the twenty-seven soil samples were collected from nine different rice-growing areas at three depths and analyzed. In accordance to the findings, the soils were found to have low to medium levels of organic carbon and to be moderately acidic to slightly acidic in nature. All the soil samples were under Non-saline condition of Electrical Conductivity and suitable for crops. The study found that soil pH was the main factor influencing different Phosphorus fractions, with Reductant soluble-P being the mostpredominant fraction, followed by Al-P, Fe-P, Ca-P, and Saloid-P. Al-P, Fe-P, and Ca-P were positively correlated with available Phosphorus, indicating their contribution to the soil's available Phosphorus pool. The study also found that Reductant-soluble phosphate (RS-P) was the dominant fraction that fixed and released P from the soil, proving the fixation of Phosphorus by sesquioxide in lateritic soil of Mayurbhanj district in Odisha

Response of Inorganic Fertilizers, Wheat Residue and Rhizobium on Soil Health and Yield Attributes of Green Gram (Vigna radiata L.) var. Samrat

An experiment was conducted on “Response of inorganic fertilizers, wheat residue and rhizobium on soil health and yield attributes of Green gram (Vigna radiata L.) var. Samrat” at research farm of Soil Science and Agricultural Chemistry, design laid out in randomized block design (RBD) with three replications. Green gram was taken for study with recommended doses of fertilizers (N, P2O5 and K2O @ 20, 40 and 20 kg ha-1) was applied with wheat residue and rhizobium. The variety of green gram is Samrat was taken for research trial. Bulk density (Mg m-3) and particle density was maximum in T1 – [Control (Recommended Dose of Fertilizer)], soil pore space, water holding capacity, pH, EC, organic carbon, nitrogen, phosphorus and potassium were recorded maximum in T9 - [NPK @ 100% + RZ @ 100% + WR @ 100%] respectively. In treatment T9 the highest pod yield of green gram 1358.807 Kg ha-1 was obtained with C:B ratio of 1:2.48. Use of T9 - [NPK @ 100% + RZ @ 100% + WR @ 100%] on crop and analyzing the effect of T9 treatment on soil physical as well as chemical properties of soil

Effect of Tillage Practices and Integrated Nutrient Management on Soil Physicochemical Properties and Yield of Cowpea (Vigna unguiculata L. Walp) at Uttar Pradesh, India

A field investigation was conducted at Central Research Farm of Department of Soil Science and Agricultural Chemistry at Sam Higginbottom University of Agriculture, Technology and Sciences, Prayagraj, Uttar Pradesh, India during Zaid season of 2023. The experimental plot was laid down into a randomized block design with 9 treatments replicated thrice, consist of 3 levels each of tillage practices and RDF (0 %, 50%, 100%) and 1level of vermicompost (5 t ha -1). Results revealed that maximum bulk density (1.29 Mg m-3) and soil pH (7.10) were found in T1 (Tillage @ 0% + RDF @ 0% +VC @ 5t ha-1). The others soil parameters like porosity (55.60 %),water holding capacity (46.63 %), organic carbon (0.49 %), electrical conductivity(0.25 dS m-1), available Nitrogen (331.54 kg ha-1), available Phosphorus (28 kg ha-1), available Potassium (193.73 kg ha-1 ) were recorded maximum in T9 (Tillage @ 100% + RDF @ 100% +VC @ 5t ha-1) .Whereas best yield (150.56 q ha-1 ) was also recorded in T9 (Tillage @ 100% + RDF @ 100% +VC @ 5t ha-1) .Economic parameters like gross return (₹271008.00 ha-1) and net return (₹152323.00 ha-1) were found to be maximum in T9 (Tillage @ 100% + RDF @ 100% +VC @ 5t ha-1) and best cost benefit ratio (C: B) was recorded as (1:2.28) in treatment T9 (Tillage @ 100% + RDF @ 100% +VC @ 5t ha-1). Integrated approach of application of RDF (NPK), vermicompost along with 100% tillage practices found to be the best treatment as the soil parameters and plant growth parameters significantly affected with the different levels of nutrient and tillage practices

Influence of Different Levels of N, P, K and Organic Manures on Soil Health, Growth and Yield of Green Gram (Vigna radiata L.) cv. Samrat

An experiment was conducted on Influence of different level of N P K and organic manures on soil health, growth and yield of green gram (Vigna radiata L.) cv. Samrat at the research farm of soil Science and Agricultural Chemistry, design laid out in randomized block design (RBD) with three replications. Green gram was taken for study with recommended doses of fertilizers (N, P2O5 and K2O @ 20, 40 and 20 kg ha-1) was applied with organic manure (FYM, and Vermicompost). A variety of green gram Samrat was taken for a research trial. Bulk density (mg m-3) and Particle density (mg m-3) was maximum in T1 (NPK @ 0% + FYM @ 0% + VC @ 0%). Pore space (%), Water holding capacity (%), pH (1:2) w/v, EC (dS m-1), Organic carbon (%), Nitrogen (kg -1), Phosphorus (kg -1) and Potassium (kg -1) was maximum in T9 (NPK @ 100% + FYM @ 100% + VC @ 100%). In treatment T9 the highest grain yield (15.58 q ha-1) was obtained with C:B ratio of 1:3.26

Response of Organic Manures and Rice Residues on Physical Soil Health Parameters

The trial carried on topic “Response of organic manures and rice residues on soil physical health parameters” for the two repeated years, start from winter seasons of the years 2021-22 at research farm, department of soil science and agricultural chemistry. Total 54 soil samples were taken from the site from different depths i.e., 0-15 cm and 15-30 cm. Among nine treatments, during field experimentation, the conjunctive use of NPK and different organic manures [FYM, vermicompost, rice residues and jeevamrutha] levels, together come with best results significantly. The excavated soil sample from experimental site before conducting research operation, mentioned that, the land topography range was nearly levelled with 1-3% slope. Soil is of sandy loam texture. Significantly, with regard to physical soil parameters, cumulative mean value for bulk density 1.31 Mg m-3 , percent pore space 49.25 %, particle density 2.55 Mg m-3 and percent maximum water holding capacity 43.27 %, physical properties were found to be significant in terms soil health. This study includes awareness about the role about importance of physical properties for maintaining soil health