Journal of Scientific Research and Reports

Aim: The aim of the experiment is to know the effect of irrigation and nitrogen management on growth, yield attributes, yield, economics and WUE of summer sesame.

Study Design: The experiment was laid out in split-plot design.

Place and Duration of Study: Research Farm of Agricultural Research Station, Brinjhagiri, Chhatabar of Faculty of Agricultural Sciences, Siksha O Anusandhan (Deemed to be University), Bhubaneswar (Odisha), during summer season of 2024.

Methodology: Three levels of irrigation (I₁ -3 irrigations at branching, flowering and capsule development stage, I₂ -2 irrigations at branching and flowering stage and I₃ -2 irrigations at branching and capsule development stage) as main-plot treatments and four nutrient management levels (N₁ -STBR- 100% N through inorganic, N₂ -75% N through inorganic + 25% N through FYM, N₃ -75% N through inorganic + 25% N through vermicompost and N₄ -50% N through inorganic + 25% N through FYM+ 25% N through vermicompost) as sub-plot treatments replicated thrice. The net plot size was 4m × 3m.

Results: I₁ resulted the highest seed yield (795.1 kg ha^-1) and stover yield (2057.1 kg ha^-1). N₁ produced highest seed yield (818.9 kg ha^-1) and stover yield (2101.4 kg ha^-1). Highest net return (₹35894.00) and return per rupee investment (1.83) was obtained in I₁N₁. The highest WUE (4.14 kg ha^-1 mm^-1) was calculated in I₂N₁.

Conclusion: Three irrigations at branching, flowering and capsule development stage and 50% N through inorganic + 25% N through FYM + 25% N through vermicompost can be recommended to achieve higher seed yield, higher oil content and oil yield.