K. Premnath, K. Suseendran, C. Kalaiyarasan and S. Jawahar
Abstract
A field experiment was carried out at the Annamalai University Experimental Farm, Cuddalore District, Tamil Nadu, from February to May 2023. The treatments included the best combinations consisting of chemical and mechanical methods of weed control. The experiment was laid out in a randomized block design with seven treatments and replicated three times. Among the different treatments, Penoxsulam + Butachlor @ 2L/ha (PE) on 3 DAT fb, Conoweeder twice on 25 and 35 DAT (rice) (T3), which helps in reducing weed density and ultimately reduced weed biomass, resulted in an increase in crop growth and yield. Higher plant height, DMP, and higher green cob yield were recorded under (T3) might be due to maintenance of a weed-free environment, particularly throughout vital growth stages of crop. Cutback crop weed competition helped in higher growth and development of rice crop, leading to higher grain and straw yield.