نتایج جستجو برای: dichlorpop p mecoprop mcpa
تعداد نتایج: 1270023 فیلتر نتایج به سال:
به منظور مقایسه کارایی علفکشهای جدید با علفکشهای رایج در ذرت علوفهای آزمایشی در قالب طرح بلوکهای کامل تصادفی با 12 تیمار و سه تکرار در سال 1388 در مزرعه تحقیقاتی دانشکده کشاورزی بیرجند صورت گرفت. تیمارها شامل: کاربرد پسرویشی علفکش نیکوسولفورون (کروز) و فورام سولفورون (اکوئیپ) به میزان 1، 5/1، 2 و 5/2 لیتر در هکتار، کاربرد پسرویشی علفکش 2,4-d + mcpa ، به میزان 5/1 لیتر در هکتار و کاربرد پیشرویشی...
The purpose of this cohort study is to shed further light on the potential carcinogenic effect indicated by a Swedish case control study of the 2,4-dichlorophenol and 4-chloro-ortho-cresol based phenoxy herbicides, unlikely to be contaminated with 2,3,7,8-tetrachlorodibenzo-p-dioxin (2,3,7,8-TCDD). In the present study it was the intention to include all persons employed in manufacture of pheno...
Surface water concentrations of the acid herbicides 2,4-D, dicamba and mecoprop were measured in ten urban Ontario streams before (2003–2008) and after (2009–2012) a ban on the sale and use of pesticides for cosmetic (non-essential) purposes. Frequencies of detection (2003–2012) were 98%, 96% and nearly 100%, respectively for 2,4-D, dicamba and mecoprop. Concentrations were typically in the ng ...
Combining herbicides for controlling broadleaf weeds and grasses in wheat farms has not been studied under Isfahan environmental conditions. Thus, this experiment was conducted in 1995-96 at the Agricultural Research Station, Isfahan University of Technology, in order to investigate the issue. In this study, 2,4-D+MCPA (U46 Combi Fluid 6), bromoxynil, metribuzin, diclofop-methyl and tralkoxydim...
PURPOSE The sorption behavior of the herbicide 4-chloro-2-methylphenoxyacetic acid (MCPA) to three different artificial soil mixtures was investigated. Artificial soils serve as model systems for improving understanding of sorption phenomena. MATERIALS AND METHODS The soils consisted of quartz, ferrihydrite, illite, montmorillonite, and charcoal. In a previous study, several selected mixtures...
Mineralization potentials, rates, and kinetics of the three phenoxy acid (PA) herbicides, 2,4-dichlorophenoxyacetic acid (2,4-D), 4-chloro-2-methylphenoxyacetic acid (MCPA), and 2-(4-chloro-2-methylphenoxy)propanoic acid (MCPP), were investigated and compared in 15 soils collected from five continents. The mineralization patterns were fitted by zero/linear or exponential growth forms of the thr...
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