ارزیابی کارآیی علف‌کش دومنظوره توتال و اختلاط دو علف‌کش تری بنورون متیل و پینوکسادان در مراحل مختلف رشدی گیاه گندم

In order to study of efficiency Total dual purpose herbicide and mixed Granestar and Acsiyal herbicides, and response of wheat at growth various stages to the aforementioned herbicides, an experiment with randomized complete block design with three replications were conducted during 2008-2009 in a field experiment at Ramin Agricultural and Natural Resources University, Khouzestan. Treatments included using dual purpose herbicide Total and mixed herbicides Granestar and Acsiyal in growth difference stages (three-leaf, tillering, stem elongation, three-leaf plus stem elongation and heading). Meanwhile, two additional treatments no application herbicide was arranged as weeding and no cultivate control of weeds in full season. The results indicated that was significant effect (P<0.001) between different treatments for grain yield, biological yield, harvest index, tiller number m^-2, spikelet per spike, spike length, plant height and dry weight of weeds m^-2. Although for traits grain per spike, grain per spikelet and 1000-grains weight was not differed significantly. Throughout taken most, grain yield in Total herbicide of stages three-leaf plus stem, three-leaf and tillering, and of mixed herbicides in three-leaf stages, three-leaf plus stem, and tillering, respectively.