Volume : 9, Issue : 12, DEC 2023

EFFECTS OF TILLAGE AND HERBICIDES WEED CONTROL ON CASSAVA (MANIHOT ESCULENTA CRANTZ) PERFORMANCE

A OGUNSOLA, O. S. OLABODE*, O. S. OLADAPO, J. O. ADISA

Abstract

Tillage and herbicide application aim at weed control, creating a favourable soil environment to plant growth and reducing weed/crop competition. The experiment was conducted to determine the effect of tillage and herbicides on the growth and performance of cassava during 2021 and 2022 growing seasons at the Teaching and Research Farm, Ladoke Akintola University of Technology Ogbomoso, Oyo State. The experiment was a randomized complete block design replicated three times with split plots arrangement. The main plot treatments were conventional and minimum tillage, while the subplots treatments were Lagon (1 kg ai/ha), Primextra Gold (3 kg ai/ha), Xtravest (3 kg ai/ha), Atrazine (4 kg ai/kg), Pendimethalin (2 kg ai/ha) and Metolachlor (1 kg ai/ha). Hoe weeding at 4, 8 and 12 week after planting and unweeded checks were included to serve as control. Only the survival was affected by tillage while herbicide treatments significantly affected both the sprouting and survival of cassava. Conventional tillage + hoe weeding had the least weed density (34.50 m -2), highest cassava fresh tuber yield (63.67 t/ha) was recorded in hoe weeding with conventional tillage. Among the herbicides, Metolachlor was the best with 44.01 t/ha fresh tuber. In conclusion, conventional tillage was very crucial in the cultivation of cassava. Primextra Gold herbicide was the best for use in cassava followed by Metolachlor, Atrazine, Xtravest, Lagon and Pendimethalin in that order.

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