Effect of Organic Manures and Inorganic Sources of Phosphorus on Soil Properties and Productivity of Black Gram (Vigna mungo L.)

DOI: 10.22161/ijeab.106.8

Abstract:
The present investigation entitled “Effect of Organic Manures and Inorganic Sources of Phosphorus on Soil Properties and Productivity of Black Gram (Vigna mungo L.)” was conducted at the Instructional Farm, Rajasthan College of Agriculture, Udaipur, during the Kharif season of 2024. The study aimed to evaluate the effect of different organic manures and phosphorus sources on the growth, yield, and soil properties of black gram. The experiment comprised 16 treatment combinations with four levels of organic manures (FYM @ 5 t ha-¹, vermicompost @ 2.5 t ha-¹, FYM 5 t ha-¹ + vermicompost 2.5 t ha-¹, and control) and four levels of phosphorus sources (100% RDP through SSP, 50% RDP through rock phosphate, 50% RDP through SSP + 50% RDP through rock phosphate, and control), arranged in a factorial randomized block design with three replications. Results revealed that the combined application of FYM @ 5 t ha-¹ + vermicompost @ 2.5 t ha-¹ significantly enhanced growth and yield attributes, seed, haulm, and biological yield as well as soil organic carbon, water-holding capacity, available macronutrients, compared to other treatments. Soil pH and bulk density were significantly reduced under this treatment. Among phosphorus treatments, the application of 50% RDP through SSP + 50% RDP through rock phosphate recorded significantly higher yield attributes, yield, nutrient uptake, and soil biological activities.

Keywords:
Black gram, FYM, Vermicompost, Rock phosphate, Single super phosphate, Soil properties, Yield

Article Info:
Received: 17 Oct 2025; Received in revised form: 15 Nov 2025; Accepted: 22 Nov 2025; Available online: 30 Nov 2025

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