Investigating the Combined Effects of Pendimethalin, Atrazine and Supplement Hoe Weeding on Maize Yield


Authors : Atu Obinna A; Ozigbo Emmanuel S; Adunoye Francis O; Murphy Kayode M

Volume/Issue : Volume 5 - 2020, Issue 6 - June

Google Scholar : http://bitly.ws/9nMw

Scribd : https://bit.ly/2YXOOJW

This work investigates the effect of the chemical weed control techniques on the growth and yield of the maize at International Institute of Tropical Agricultural, Ibadan, Oyo State, Nigeria. The experimental design was 3 x 5 factorial in a randomized complete block design (RCBD) with three (3) replications. The treatments were administered to five weed control techniques (Pendimethalin at 2.0kg/ha + Atrazine at 2.0kg/ha, pendimethalin at 1.5kg/ha + Atrazine at 1.5kg/ha, pendimethalin at 1.5kg/ha + Atrazine + supplement hoe weeding, manual weeding at 3, 6 and 9 WAP and weedy check). The statistical analysis was carried out using SPSS and the result obtained showed that weed density, growth and yield related traits of maize were significantly affected by different treatments at P<0.05. From the study, the maize plants were observed to have similar plant heights and number of leaves throughout the period of measurement. Maize grown in the weedy check plots were observed to have reduced plant height, number of leaves, stem girth and leave area. The fresh, dry cob weight and cob length were also reduced in maize grown in weedy check plots which resulted in lower grain yield (0.53 t/ha). Pendimethalin at 2.0kg/ha + Atrazine at 2.0kg/ha, pendimethalin at 1.5kg/ha + Atrazine at 1.5kg/ha, pendimethalin at 1.5kg/ha + Atrazine at 1.5kg/ha + supplement hoe weeding at 6 WAP produced optimum yield more than manual weeding at 3, 6 and 9 WAP and weedy check. It can be concluded that the use of chemicals in these combinations to control weeds increases crop productivity in maize production.

Keywords : Chemical, Weed, Technique, Productivity and Maize.

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