دور التكامل بين مخلفات الذرة البيضاء و مبيد الشيفالير في مكافحة أدغال الحنطة

الملخص EN

A two-year field trial was conducted during 2010-2011 in the experimental field of Field Crop Department, College of Agriculture, University of Baghdad to test the effect of different rates of (350, 530 and 760) gm.m-2 of sorghum residues Rabh cv.

alone or in combination with 50 % (150 gm.ha-1) of recommended rate of Chevalier herbicide with weedy and without sorghum residue check.

The experiment was laid out in RCBD with three replications.

Result showed, all treatments significantly reduced weed population and dry weight of weeds in comparison to control treatment during both years of the study.

However, plots treated with 50 % of recommended rate of herbicide and amended with sorghum residues recorded least weed density and dry biomass and this suppression was much greater than the residue treatments and reduced herbicide when used alone.

Application of Chevalier herbicide at 50 % rate in plots amended with sorghum residue at rates 350 gm.m-2 resulted in similar yield as with the label herbicide rate treatment.

While the higher sorghum residues inhibited yield.

The increase in yield apparently due to increase in number of spikes per unit area.

Integration of sorghum residues at 350 gm.m-2 with a lower herbicide rate can furnish adequate weed suppression without compromising yield, which could be used as a feasible and environmentally sound weed management approach in wheat fields.