NAAS Journal

Printed Journal  |  Indexed Journal  |  Refereed Journal  |  Peer Reviewed Journal

P-ISSN: 2618-060X, E-ISSN: 2618-0618   |   NAAS: 5.20

2025, Vol. 8, Special Issue 1

Studies on residual effect of green manuring and different organic sources of nutrients on growth and yield of cowpea in maize-cowpea cropping sequence


Kushal, Gangadhar Eshwar Rao, Venkatachalapathi V, Naveen DV, Kalyan Murthy KN, Lakshmipathi RN and Boraih B

A field experiment was conducted at research and demonstration block of Research Institute on Organic Farming, UAS, GKVK, Bengaluru during 2022-23 and 2023-24 to study the effect of green manuring and different organic sources of nutrients on growth and yield of maize in maize-cowpea cropping sequence. The experiment was laid out in a split plot design with three replications. The experiment consists of 18 treatment combinations which consisted of two main plots i.e. with and without In situ incorporation of sunhemp as a green manure crop and nine subplots comprising three levels of N equivalent and four organic sources of nutrients. The soil of experimental site was red sandy loam having medium organic carbon (0.64%), medium in available N (291.2 kg ha-1), medium in available P2O5 (26.24 kg ha-1) and medium in available K2O (228.3 kg ha-1) content. The experimental results indicated that In situ incorporation of green manure along with the integrated application of 25% N equivalent FYM + 25% N equivalent poultry manure + 25% N equivalent vermicompost + 25% N equivalent jeevamrutha for maize crop resulted in significantly higher plant height (56.76 cm), leaf area (1550 cm2 plant-1), total dry matter accumulation (23.84 g plant-1), grain yield (1386 kg ha-1), haulm yield (2903 kg ha-1) and B:C ratio (2.37). This was followed by the combination of green manuring with 50% N equivalent FYM + 50% N equivalent poultry manure which resulted in higher plant height (53.55 cm), leaf area (1499 cm2 plant-1), total dry matter accumulation (20.96 g plant-1), grain yield (1283 kg ha-1), haulm yield (2705 kg ha-1) and B:C ratio (2.17) of residual crop cowpea. This combination was found to be significantly superior over other treatments in the studies.
Pages : 113-127 | 80 Views | 36 Downloads
How to cite this article:
Kushal, Gangadhar Eshwar Rao, Venkatachalapathi V, Naveen DV, Kalyan Murthy KN, Lakshmipathi RN, Boraih B. Studies on residual effect of green manuring and different organic sources of nutrients on growth and yield of cowpea in maize-cowpea cropping sequence. Int J Res Agron 2025;8(1S):113-127. DOI: 10.33545/2618060X.2025.v8.i1Sb.2365
Call for book chapter