K. SUDHA BHARATHI*, N. V. SARALA, C. NAGAMANI, CH. BHARGAVA RAMI REDDY AND V. CHANDRIKA

Department of Agronomy, S.V. Agricultural College, ANGRAU, Tirupati-517 502.

ABSTRACT

A field experiment was conducted during summer, 2025 at S.V. Agricultural College Farm, Tirupati. The experiment was laid out in split-plot design and replicated thrice. The treatments consisted of three irrigation regimes viz., IW/CPE-0.6 (I1), IW/CPE-0.8 (I₂) and IW/CPE-1.0 (I₃) assigned to main plots and four nitrogen levels viz., control (N₁), 40 kg N ha-1 (N₂), 60 kg N ha-1 (N₃) and 120 kg N ha-1 (N₄) allotted to sub plots. The results of the study revealed that significantly higher dry matter production, seed yield and uptake of N, P and K by sesame was recorded with scheduling of irrigation at IW/CPE-1.0. Application of 120 kg N ha-1 resulted in significantly higher dry matter production, seed yield and uptake of N, P and K by sesame crop and the lower nutrient uptake of N, P and K by sesame crop was registered with control. Scheduling of irrigation at IW/CPE-1.0 along with application of 120 kg N ha-1 resulted in higher dry matter production, seed yield and uptake of N, P and K by sesame crop.

KEYWORDS: Irrigation regimes, IW/CPE, Nitrogen levels, Sesame.