Y. SIVA KUMAR, S. HEMALATHA*, V. CHANDRIKA, P. LATHA AND G. KARUNA SAGAR
Department of Agronomy, S.V. Agricultural College, Tirupati, Andhra Pradesh, 517 502, India.
A field experiment was carried out during summer, 2019 on sandy loam soils of wetland farm of S.V. Agricultural College, Tirupati campus of Acharya N.G. Ranga Agricultural University. The experiment was laid out in split-plot design and replicated thrice with three induced moisture stress levels viz., M1 – No stress (Control), M2 – Withholding irrigation at flowering stage, M3 – Withholding irrigation at pod formation stage in main plots and five foliar spray treatments S1 – 0.5% KNO3, S2 – 2% Urea, S3 – 0.01% Salicylic acid, S4 – 0.5% 19-19-19 and S5 – Water spray twice during stress period at flowering and pod formation stages in sub plots. The higher initial and final population, growth parameters and seed yield were found with no stress and their lower values were observed with the treatment in which stress was imposed at flowering stage. Among the foliar spray treatments, application of 0.5% KNO3 resulted in higher initial and final population, growth parameters and seed yield.
Blackgram, foliar nutrition, growth parameters, moisture stress, yield.