نوع مقاله : مقاله پژوهشی
نویسندگان
1 دانشکده کشاورزی دانشگاه صنعتی شاهرود، شاهرود ، سمنان
2 دانشجوی دکتری اگرواکولوژی، گروه زراعت، دانشکده کشاورزی، دانشگاه زابل
3 دانش آموخته کارشناسی ارشد زراعت دانشکده کشاورزی دانشگاه صنعتی شاهرود
4 گروه زراعت و اصلاح نباتات دانشکده کشاورزی، دانشگاه صنعتی شاهرود
5 گروه مکانیک بیوسیستم دانشکده کشاورزی، دانشگاه صنعتی شاهرود
چکیده
کلیدواژه‌ها
عنوان مقاله [English]
نویسندگان [English]
Using reduced doses of herbicides with additives materials can reduce the consumption of herbicides, increase their efficiency and improve the health of food products. Therefore, in order to investigate the effects of mixing herbicides with salicylic acid and cocowet adjuvant on yield, yield components and nicosulfuron herbicide efficiency, a factorial experiment was conducted as randomized complete block design with three replications at the research field of Shahrood University of Technology. Factors were including weed control method at four levels; control (no treatment), weeding all season, recommended herbicide dose (nicosulfuron 2 L.ha-1) and reduced herbicide dose (nicosulfuron 1 L.ha-1) as the first factor, foliar application of salicylic acid (0.7 Mm), and non-application of salicylic acid as the second factor and cocowet in two levels, 2 liters per hectare and non-application of cocowet as the third factor. Foliar application of salicylic acid in weeding conditions increased biological and grain yield of maize by 12.5 and 44 percent compared with non-application of salicylic acid respectively. Lowest grain number per row was observed in treatment of uncontrolled and non-use of salicylic acid. Corn yield increased 14 percent by application of low doses of herbicide mixed with cocowet. The use of reduced doses of herbicide mixed with cocowet decreased population and dry weight of narrow leaves weeds similar to recommended herbicide dose. Based on the results, use of salicylic acid can improve growth and competitive ability of corn with weeds and cocowet adjuvant has the potential to reduce herbicide use through increasing herbicides use efficiency.
کلیدواژه‌ها [English]
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