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Physiological responses, growth and yield of sesame (Sesamum indicum L.) under various sowing techniques and nutrient regimes


Citation :- Physiological responses, growth and yield of sesame (Sesamum indicum L.) under various sowing techniques and nutrient regimes. Crop Res. 61: 312-320
RAJESHKUMAR A, GAURAVE M AND RAMADASS S rajeshka@srmist.edu.in
Address : Department of Agronomy, SRM College of Agricultural Sciences, Baburayanpettai, SRM Institute of Science and Technology, Kattankulathur, Chengalpattu - 603 201, Tamil Nadu, India
Submitted Date : 10-04-2026
Accepted Date : 20-05-2026

Abstract

Enhancing growth efficiency and physiological performance in sesame requires the strategic integration of appropriate sowing techniques with balanced nutrient management, particularly in regions where suboptimal establishment and nutrient limitations constrain crop productivity. This study examined the interactive effects of three sowing methods (broadcasting, dibbling, transplanting) and three nutrient levels (100%, 75%, and 50% RDF), supplemented with a 0.2% MnSO₄ foliar spray, on key growth attributes and physiological parameters of sesame. A field experiment with ten treatments was conducted in a randomised block design during summer 2025, including three sowing methods (broadcasting, dibbling, transplanting), three nutrient levels (100%, 75%, 50% RDF) and a control. The dibbling method combined with 100% RDF and MnSO₄ (T₄) produced the best growth and yield performance at all stages. This treatment recorded the highest plant height (107.8 cm), dry weight (27.82 g/plant), and branches (6.97/plant), indicating improved root establishment, nutrient uptake, and canopy development. Physiological parameters also peaked under T₄, with leaf area index (2.87), chlorophyll index (SPAD 38.89), crop growth rate (27.55 g/m²/day), relative growth rate (0.098 g/g/day), seed yield (1062 kg/ha), and stalk yield (2366 kg/ha). These results reflect enhanced photosynthesis, assimilate production, and biomass partitioning. Overall, dibbling with full RDF and Mn supplementation is an effective agronomic strategy for optimizing sesame growth, physiology, and yield, especially in nutrient-limited and dryland conditions.

Keywords

Dibbling sesame sowing techniques sesame 


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