Legume Research
Web of Science
  • Year: 2026
  • Volume: 49
  • Issue: 8

Residual Effect of Municipal Solid Waste Compost on Yield and Economics of Blackgram (Vigna mungo L.)

  • Author:
  • M. Jayalakshmi1,*, P. Kavitha2, K. Sammi Reddy3, M. Sreenivasa Chari4, D. Lakshmi Kalyani5, P. Lavanya Kumari6, M.V.S. Naidu7
  • Total Page Count: 6
  • Page Number: 1426 to 1431

1Regional Agricultural Research Station, Acharya N.G. Ranga Agricultural University, Nandyala-518 502, Andhra Pradesh, India

2Agricultural Research Station, Acharya N.G. Ranga Agricultural University, Reddipalli-515 701, Andhra Pradesh, India

3ICAR-National Institute for Abiotic Stress Management, Batamathi-413 102, Maharashtra, India

4Agricultural Research Station, Acharya N.G. Ranga Agricultural University, Kadiri-515 591, Andhra Pradesh, India

5Agricultural Research Station, Acharya N.G. Ranga Agricultural University, Rekulakunata-516 233, Andhra Pradesh, India

6Agricultutal College, Acharya N.G. Ranga Agricultural University, Bapatla-522 101, Andhra Pradesh, India

7S.V. Agricultural College, Acharya N.G. Ranga Agricultural University, Tirupathi-517 501, Andhra Pradesh, India

*Corresponding Author: M. Jayalakshmi, Regional Agricultural Research Station, Acharya N.G. Ranga Agricultural University, Nandyala-518 502, Andhra Pradesh, India, Email: m.jayalakshmi@angrau.ac.in

Abstract

A field experiment was conducted at Regional Agricultural Research Station Nandyal, ANGRAU, during rabi from 2022-23 to 2023-24 to study the residual effect of municipal solid waste compost on yield, economics and soil properties of blackgram.

The experiment was laid out in a split-plot design with three main plots and five sub plots replicated thrice. The main-plots comprised of three levels inorganic fertilizer viz., M: 0% RDF, M2: 75% RDF and M3: 100% RDF. The sub plots comprised of different levels of municipal solid waste compost and FYM viz., S1: Control, S2: FYM @ 10 t ha-1, S3: MSWC @ 5 t ha-1, S4: MSWC @10 t ha-1 and S5: MSWC @ 15 t ha-1. MSWC and FYM treatments were imposed only to kharif maize and the residual effect was studied in rabi blackgram. The inorganic fertilizers like nitrogen, phosphorus and potassium were applied as per the treatments during both years.

Highest yield and yield attributes were recorded with 100% RDF (M3) among three NPK levels and MSWC @ 15 t ha-1 (S5) in MSWC treatments. After harvest of blackgram the highest available nutrients N, P2O5, K2O values were found in 100% RDF (M3), followed by 75% RDF (M2). Among different levels municipal solid waste compost, MSWC @ 15 t ha-1 (S5) showed the highest values and lowest with the control (S1). DTPA extractable micronutrients viz., Fe, Mn, Zn and heavy metals viz., Cd, Cr, Ni and Pb were not influenced by different levels of inorganics and municipal solid waste compost and their combinations. However the DTPA extractable heavy metals were recorded numerically the highest at MSWC @ 15 t ha-1 (S5) in blackgram during rabi (2023-2024) in the maize-blackgram cropping sequence. The heavy metals detected at higher doses were also within the permissible limits. Among different doses of municipal solid waste compost, MSWC @ 15 t ha-1 (S5) had the highest microbial and enzyme activity, which is statically on par with the application of MSWC @ 10 t ha-1 (S4) and the lowest in control (S1) during both the years of the study. In blackgram higher gross returns, net returns and B:C ratio were recorded in 100% RDF (M3), followed by 75% RDF (M2) and 0% RDF (M1). Among organic sources, MSWC @ 15 t ha-1 (S5) was superior which was on par with FYM @ 10 t h ha-1 (S2).

Keywords

Blackgram, Economics, Heavy metals, Municipal solid waste compost, Residual effect, Yield