科研之友
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摘要
Johnson grass (Sorghum halepense L.) is a problematic weed in croplands of Iran whereby herbicides control varies under different environmental conditions. Therefore pot experiments were conducted in the campus of Paradise of Agricultural and Natural Resources, Razi University, Kermanshah, Iran during the summer of 2013. Two rhizomes of Johnson grass were planted in a plastic pot. Treatments included foramsulfuron alone, foramsulfuron+iodosulfuron (WG formulation), foramsulfuron+iodosulfuron (power formulation) in combination with adjuvants ammonium sulfate (AMS) and urea ammonium nitrate (UAN). Spray solution, with and without adjuvant, was applied to washed and none-washed Johnson grass foliage. Treatments were laid out in a completely randomized design in a factorial arrangement with four replications. In this study the number of experimental units was 169 pots (163 treated pots and six untreated pots) and a total of 338 Johnson grass plants. The results of this study indicated a decrease in efficacy of foramsulfuron and iodosulfuron herbicides due to airborne dust accumulated on Johnson grass shoots. In general, applying adjuvants increased herbicide performance especially in dusty condition. Addition of AMS to the herbicide spray solution overcame the influence of airborne dust on the activity of herbicides better than UAN. WG formulation of Maister was more efficient in the presence of airborne dust.
- 出版日期2014-12
