Glyphosate-based herbicides on weeds management and maize performance under conservation agriculture practices in eastern Kenya
by Alfred Micheni; David Mburu; Fred Kanampiu; Njue Mugai; Francis Kihanda
International Journal of Agricultural Resources, Governance and Ecology (IJARGE), Vol. 10, No. 3, 2014

Abstract: A three-season research study was conducted at Embu Agricultural Research Station farm to determine the effect of glyphosate-based herbicides on weeds management and maize (Zea mays L.) performance under zero-tillage conservation agriculture practice. Glyphosate herbicide sprays were prepared from Roundup Turbo product at the rate of 2.5 L ha⁻¹ and Roundup Weathermax at 1.5, 2.5 and 3.0 L ha⁻¹ rates. Significant (p ≤ 0.05) differences in weeds management were observed under the tested rate of Roundup Turbo compared to un-weeded control plots. The average grain yield from conventionally tilled plots was 3.6 t ha⁻¹. This did not differ significantly from those of herbicide-managed plots. Low-grain yield (0.1 t ha⁻¹) was observed from un-weeded plots compared to those from zero-tilled plots that had also exhibited significantly (p ≤ 0.05) higher net-benefits. The study concluded that the application of herbicides improves weeds control and maize performance.

Online publication date: Wed, 22-Oct-2014

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