Herbicide screeining trial.

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Title Language: 
English
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Kenya Agricultural Research Institute, Mtwapa, Kenya
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1991404570
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Language: 
English
Abstract: 
Rapid weed growth early in the crop season and scarcity of labour at the Coastal region of Kenya generally results to lower crop yields. A trial was therefore set-up to investigate ways of minimizing early maize crop-weed competitions and thus improve grain yields. The trial was done at regional research centre Mtwapa and Pwani Hybrid maize variety was used as the test crop. The recommended agronomic practices were practiced and herbicides applied at various rates and periods after planting. Supplemental weeding was done and weed biomass was estimated. Other parameters recorded were maize stand count, grain rows per ear, grains per row and field weight. From the data collected and analysed, herbicides and time of supplemental weeding significantly affected weed biomass. Herbicide application reduced weed biomass. Both herbicide and time of supplemental weeding did not have any significant effect on maize stand count, grain yield and yield. To avoid early weed competition therefore, weeding needs to be done as early as possible.
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Date of publication: 
January, 1991
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