Effectiveness of herbicides treatments against weeds in maize and their action on yield and yield components

Document Type : Original Article

Authors

1 Pesticide Chemistry Dept., Fac. of Agric., Alex. Univ.

2 Pests & Plant Protection, National Research Center, Cairo.

3 Pest Control & Environ. Protection Dept., Fac. of Agric. (Damanhour) Alex., Univ.

4 Pests & Plant Protection, National Research Center, Cairo

10.21608/jpces.2006.460772

Abstract

Field experiments were conducted to evaluate the efficiency of some herbicides for controlling weeds and their effectiveness on yield and yield components in maize plant. The mixture of atrazine + pendimethalin and metribuzin alone were used as pre-emergence herbicides, while bentazone and fluroxypyr used as post-emergence herbicides. Predominant weed species in the field were mainly annual grassy weeds, Digitaria sanguinalis, Eleusine indica and Dinebra retroflexa, (87.61 %), while the broadleaf weeds, Amaranthus cruentus and Portulaca oleracea, represented only (12.39 %).  The mixture of atrazine and pendimethalin seemed to be the most effective herbicide since it controls more than 98% of the total weeds, while metribuzin gave approximately, 67 % control in the two seasons. Fluroxypyr was found to be the most effective in the reduction of broadleaf weeds than bentazone. All applied herbicides caused highly significant increase of maize yield and enhanced plant characters and yield components such as plant height, leaf area index (LAI), ear length, ear diameter, ear weight, kernels weight / ear and weight of 1000 kernels.

Keywords

Journal of Pest Control and Environmental Sciences
Volume 14, Issue 2
December 2006
Pages 381-390

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