Impact of sequential herbicide application on growth and yield of wet direct-seeded rice

Weed infestation is a major constraint in Direct Seeded Rice (DSR), causing significant yield losses from crop establishment to panicle initiation. Effective and timely weed management is therefore critical for sustaining rice productivity. A field trial was conducted on clay loamy soils at KVK, Kampasagar during the Rabi season of 2024–25 to evaluate the performance of JGL 24423 under different weed management practices in wet-direct seeded rice. Sequential herbicide applications, notably Penoxsulam 1.02% + Cyhalofop-butyl 5.1% OD @ 135 g a.i. ha^-1 at 20 DAS followed by Cyhalofop-butyl 10% EC @ 80 g a.i. ha^-1 at 45 DAS (T4) recorded the highest plant height (91.83 cm), dry matter accumulation (17,039 kg ha^-1), tiller density (225.93 m-²), grain yield (7,600 kg ha^-1) and straw yield (9,436 kg ha⁻¹) followed by Penoxsulam 1.02% + Cyhalofop- butyl 5.1% OD @ 135 g a.i. ha^-1 as PoE at 20 DAS fb Fenoxaprop-p-ethyl 6.7% w/w @ 60.38 g a.i. ha^-1 as PoE at 45 DAS (T5) recorded the plant height (91.50 cm), dry matter accumulation (16,447 kg ha^-1), tiller density (224.53 m-²), grain yield (7,600 kg ha^-1) and straw yield (9,436 kg ha⁻¹) which were significantly on par with hand weeding with respect to plant height (93.40 cm), dry matter accumulation (17,306 kg ha^-1), tiller density (448.33 m-²), grain yield (7,600 kg ha^-1) and straw yield (9,436 kg ha⁻¹).