نوع مقاله : مقاله پژوهشی
نویسندگان
1 گروه زراعت و اصلاح نباتات دانشکده کشاورزی دانشگاه بوعلی سینا همدان
2 گروه زراعت و اصلاح نباتات، دانشکده کشاورزی، دانشگاه بوعلی سینا، همدان، ایران
چکیده
کلیدواژهها
عنوان مقاله [English]
نویسندگان [English]
To screen a safe post-emergence herbicide for coriander, a pot experiment was conducted outside the greenhouse at Bu-Ali Sina University in 2023. Six doses (0, 1/16, 1/8, 1/4, 1/2, and 1 time the labeled dose) of 26 herbicides were sprayed on coriander at the 4-5 leaf stage. Following the previous experiment, a dose-response experiment was conducted on coriander and lambsquarters to investigate the selectivity index of one of the screened herbicides (phenmedipham+ desmedipham+ ethofumesate) when coriander seeds were primed with ascorbic acid (1 mM). Among the herbicides, clodinafop propargyl at the labeled dose (64 g a.i. ha-1) did not injure coriander. Coriander was relatively well-tolerant to the labeled dose of phenmedipham+ desmedipham+ ethofumesate. In the two experiments above, the doses of phenmedipham+ desmedipham+ ethofumesate required for 10% desiccation were 705.1 and 724.5 g a.i. ha-1, differing by 11% and 14% from the labeled dose (822 g a.i. ha-1). Seed priming of coriander with ascorbic acid protected it from minor metabolic damage caused by phenmedipham+ desmedipham+ ethofumesate, increasing the selectivity index from 1.49 to 1.74.
کلیدواژهها [English]
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