Evaluation of herbicide mixtures and manual weed control method in maize (Zea mays L.) production in the Southern Guinea agro-ecology of Nigeria
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Date
2017-09-05
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Cogent Food and Agriculture
Abstract
Field trials were conducted in 2015 and 2016 cropping seasons to evaluate some herbicide mixtures and manual weed control method in the production
of maize in the southern Guinea savanna of Nigeria. The experiment consisted of
10 treatments as follows: Metolachlor + atrazine at 1.0 + 2.0 kg a.i./ha, metolachlor + atrazine at 2.0 + 2.5 kg a.i./ha, metolachlor + atrazine at 3.0 + 3.0 kg a.i./
ha, pendimethlin + atrazine at 1.0 + 2.0 kg a.i./ha, pendimethlin + atrazine at
2.0 + 2.5 kg a.i./ha, pendimethlin + atrazine at 3.0 + 3.0 kg a.i./ha, metolachlor + atrazine at 1.0 + 2.0 kg a.i./ha plus one supplementary hoe weeding (SHW) at 6 weeks
after sowing (WAS) and pendimethlin + atrazine at 1.0 + 2.0 kg a.i./ha plus one SHW
at 6 WAS, hand weeding at 3 and 6 WAS and a weedy check. These treatments were
laid out in randomized complete block design with three replicates. Results showed
that metolachlor + atrazine and pendimethalin + atrazine at 1.0 + 2.0 kg a.i./ha plus
one SHW at 6 WAS significantly reduced weed infestation and gave higher maize
grain yield and economic returns. These methods are therefore recommended to
farmers as alternative to two hand weeding at 3 and 6 WAS.
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Citation
Imoloame (2017)