Evaluation of airborne dust effect on the efficiency of Atlantis OD, clodinafop propargyl and 2,4-D+MCPA herbicides on weed control in wheat

To evaluate the amount of yield changes, some yield components and weeds control under the presence or absence of airborne dust, an experiment was conducted in the research field of the University of Kurdistan, (Dehgolan) in 2017. The experimental design was a randomized complete block in which treatments were arranged as split-plot with four replications. The experimental treatments include the levels of the airborne dust application (the existence of airborne dust and non-existence of airborne dust as the control) and also application of various herbicides included mesosulfuron-methyl + iodosulfuron (Atlantis OD), 2,4-D + MCPA, clodinafop propargyl, weedy control, and hand weeding control, which all can be considered as the main factor. The results showed that the highest dry weight of weeds, decreased yield and studied traits (6.3% decrease in height, 2.9% number of grains per spike, 4.72% the thousand seed weight and finally 10.3% decrease in grain yield) was observed due to the existence of airborne of dust .The most negative impact of dust on the 2,4-D herbicide (reduction of 64% herbicide efficiency) was observed, but the efficiency of mesosulfuron-methyl + iodosulfuron didn’t decrease under the effect of airborne dust. In conclusion, the highest weed dry weight loss was related to mesosulfuron-methyl + iodosulfuron treatment.