Mitigating Allelopathic Stress in Rice through Seed Treatments, Temperature Management, and Weed Control Strategies.
DOI:
https://doi.org/10.22376/ijlpr.v15i4.2017Keywords:
Allelopathy, Rice (Oryza sativa), Seed hardening, Temperature regimes, Weed control efficiency, Germination and growthAbstract
Rice is a global staple that requires good germination, temperature regulation, and effective weed control to promote growth, productivity, and food security. This study looked at the impact of seed treatments, temperature regimes, and post-emergence herbicides on rice (Oryza sativa L.) germination, growth, and yield. Seeds were treated with hardening, CaCl₂, NaCl, and KNO₃ and tested for germination rate, mean germination time (MGT), germination index (GI), and energy of germination. Total phenolic content (TPC) and chlorophyll levels were measured, and growth parameters were recorded at temperatures ranging from 30 to 50°C. Hardening and CaCl₂ greatly increased germination and vigor, with 35°C being ideal for seedling growth. Field testing demonstrated that bispyribac sodium offered over 90% weed control, resulting in increased plant height, panicle length, and yield. The combination of seed hardening, temperature optimization, and herbicide use increased rice establishment and productivity.
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