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Simulated damage through optimised growth stage coppicing enhances branching and yield in sesame (Sesamum indicum L.) 


Citation :- Simulated damage through optimised growth stage coppicing enhances branching and yield in sesame (Sesamum indicum L.). Res. Crop. 27: 486-497
HENRY OFOSUHENE SINTIM, MUSAH BUKARI, FELIX KWAA OWUSU AND LEVITE GHARTEY hosintim@ug.edu.gh
Address : Institute of Applied Science and Technology, University of Ghana, Legon, Ghana
Submitted Date : 18-05-2026
Accepted Date : 13-07-2026

Abstract

Despite significant progress in the development of improved sesame cultivars, seed yield remains limited due to restricted branching and reduced capsule production, indicating that genetic improvement alone is insufficient to achieve higher productivity. Therefore, there is a need to develop a simple, cost-effective, and scientifically validated agronomic intervention, such as growth stage-specific terminal coppicing, to optimise plant architecture and improve branching and seed yield in sesame. This study conducted at University of Ghana between April 2024 and August 2025 evaluated four plant coppicing regimes namely: no coppicing and coppicing at 7, 14, or 28 days after transplanting (DAT) to determine their impacts on vegetative development, reproductive traits, and yield of sesame based on field observations which suggested that sesame exhibits compensatory growth following insect defoliation. Coppicing at 7 DAT significantly (p ≤ 0.05) decreased plant height and leaf number, whereas intact plants produced the tallest plants and highest leaf counts. Coppicing at 14-28 DAT enhanced lateral branching, increasing branch number to approximately three per plant and raising the height of the first branch above ground level relative to the control and 7 DAT treatments. Although Flowering was highest in the control, coppicing at 28 DAT reduced flower number despite increased branching. Coppicing extended the podding zone and increased capsule production (40-45/plant) relative to the control (28/plant). The 14 DAT treatment produced the highest seeds per capsule (70-75), greatest 1000-seed weight (3.4-3.5 g), and highest seed yield (11-12 g/plant). Root dry matter was unaffected by treatment. Overall, coppicing at 14 DAT provided the optimum balance between vegetative growth and reproductive performance, resulting in superior sesame yield through enhanced branching, capsule production, and seed filling. These findings indicate that timely apical shoot removal can be an effective agronomic practice for increasing sesame productivity.

Keywords

Apical dominance branching coppicing seed yield Sesamum indicum 


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