عنوان پایان‌نامه
اثر دزهای کاهش یافته علف کش های نیکوسولفورون، فورام سولفورون و بنتازون در کنترل علف های هرز ذرت در سیستم های خاک ورزی حفاظتی و مرسوم
- رشته تحصیلی
- مهندسی کشاورزی -شناسایی ومبارزه با علفهای هرز
- مقطع تحصیلی
- کارشناسی ارشد
- محل دفاع
- کتابخانه مرکزی پردیس کشاورزی و منابع طبیعی شماره ثبت: 6655;کتابخانه مرکزی پردیس کشاورزی و منابع طبیعی شماره ثبت: 6654;کتابخانه مرکزی -تالار اطلاع رسانی شماره ثبت: 71776
- تاریخ دفاع
- ۲۰ بهمن ۱۳۹۳
- دانشجو
- امین اسوار
- استاد راهنما
- محمدرضا جهانسوز, حسن علیزاده
- چکیده
- ندارد
- Abstract
- Field experiment was carried out to evaluate the effect of reduced dose of Nicosulfuron, Furamsulfuron and Bentazon on weed control in corn in conservation tillage related to conventional tillage. The experimental design was a split plot with three replications. Main plots were two method of tillage (minimum tillage and conventional tillage) and sub-plots were Nicosulfuron, Furamsulfuron and Bentazon, Nicosulfuron+ Bentazon, Furamsulfuron+ Bentazon in three doses included: zero, 50% and 100% of recommended dose. The experiment was conducted in 2013 consequently to wheat at field of agricultural research center of Moghan (Ardabil province). The results showed that Nicosulfuron at dose of 100%, controlled the weeds more effective than other herbicides. Other herbicides treatments such as Nicosulfuron + Furamsulfuron at dose of 100% showed an effective control same to dose of 100% of Furamsulfuron. Combination of Furamsulfuron+ Bentazon had better control in comparison with separately use of them. The lowest control was for application of 50% Bentazon. Use of reduced dose of herbicides although its decrease of environmental effect, diminish of poisonous cue in water and soil, decrease of herbicide application costs and damage to consequent crops, was not economic. Also, reduced dose of herbicides did not show an efficient control of weeds and because of rapid growth rate of weeds (that were not controlled), the yield of corn declined. It is necessary to integrate the different methods of weed control such as agricultural practice (like conservational tillage) and biologic control
