Temperature affects the performances of herbicides in general. A study was conducted to determine the influence of temperature on the tolerance of maize genotypes to alachlor, metazachlor and metolachlor. Experiments were conducted in growth chambers at the University of Pretoria experimental farm. Results showed significant influence of temperature on maize tolerance to all the herbicides. Low temperatures significantly reduced the growth of maize plants. Metazachlor performance was most influenced by temperature, indicating that temperature influence on maize tolerance to herbicides is herbicide-dependent. This necessitates the need to screen maize genotypes for tolerance to herbicides under varying temperatures. Genotypes that are tolerant to commonly used herbicides under varying temperatures could be recommended for areas where temperatures fluctuate a lot.
Maize genotypes, maize herbicides tolerance, visual injury, shoot dry mass
Share This Article
© The Author(s) 2008. Open Access. This article is distributed under the terms of the Creative Commons Attribution 4.0 International License which permits unrestricted use, sharing, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.