Effect of the maize vegetative space on weediness and yield | Značaj veličine vegetacionog prostora za zakorovljenost i prinos kukuruza
2010
Simić, M., Institut za kukuruz Zemun Polje, Beograd - Zemun (Serbia) | Stefanović, L., Institut za kukuruz Zemun Polje, Beograd - Zemun (Serbia) | Brankov, M. | Spasojević, I., Institut za kukuruz Zemun Polje, Beograd - Zemun (Serbia)
The arrangement pattern, i.e. shape and size of vegetative space available to growing plants influences crop-weed competitive interaction and weed abundance. Most researches show that growing row crops such as maize, soybean, sunflower etc., with narrow row space, has as a result lower weed infestation and better yield parameters. In this study the effects of the maize vegetative space, which are achieved with combination of different row spaces and spaces between plants in the row, on the weed distribution and fresh matter and some morphological and productive parameters of maize were investigated. The crop density was the same for all arrangement patterns and herbicide application was included with three levels: full and half of the recommended dose and control without herbicide application. In all three years of investigation, the weed fresh matter declined with decreasing row spaces and was, on average, the lowest for the narrower row space and herbicide application at recommended doses (38,6; 12,8 and 351,1 g/square meter). In such arrangement pattern of maize plants, significant influence on the fresh matter of D. stramonium, S. nigrum and A. retroflexus, was achieved. Herbicide application at half of the recommended dose also significantly influenced level of weediness compared to untreated control. The size of maize vegetation space significantly influenced grain yield in 2005 and 2006, otherwise, the herbicide application had a significant influence on maize yield in all years. Grain yield did not differ significantly according to LSD-test between treatments with full and half rate of herbicides.
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