Optimization of sowing window for late sown rabi greengram (Vigna radiata L.)

Abstract

Sowing time is an important agronomic factor that significantly affects plant growth, development and final production. Similarly, suitable variety also plays an appreciable role in final productivity. Therefore, the present study was conducted during late rabi season, 2024-25 at dryland farm of S.V. Agricultural College, Tirupati to evaluate the effect of sowing windows and varieties on growth and yield of greengram under dryland conditions under split-plot design with three sowing windows as main plots and four varieties as subplots on sandy loam soils which was low in available nitrogen, medium in available phosphorus and potassium. Results revealed that greengram sown during II Fortnight of December significantly enhanced growth and yield attributes, including number of pods branch-1, number of seeds pod-1, pod length, pod weight plant-1 and thousand seed weight, resulting in the highest seed and haulm yield. Among varieties, LGG 630 recorded the highest seed yield and superior yield attributes, owing to its favourable genetic potential. The interaction between sowing window and varieties were found to be non-significant. The findings suggest that early sowing during II Fortnight of December with the variety LGG 630 can significantly improve productivity in late rabi season in Southern Agro-Climatic Zone of Andhra Pradesh.