نتایج جستجو برای: avena fatua l
تعداد نتایج: 619357 فیلتر نتایج به سال:
به منظور بررسی رقابت یولاف وحشی با گندم و چگونگی تاثیر آن بر عملکرد گندم در سطوح مختلف کود ازته تحقیقی در سال 75-76 در دو منطقه، مزرعه تحقیقاتی دانشکده کشاورزی دانشگاه شیراز (باجگاه) و ایستگاه تحقیقات دانشکده کشاورزی دانشگاه شیراز (کوشکک) انجام شد. در این آزمایش تاثیر 5 سطح تراکم علف هرز یولاف وحشی (صفر، 15، 30، 45 و 60 بوته در مترمربع) بر گندم رقم نیک نژاد در چهار سطح مصرف کود ازته (صفر، 50، 1...
Seed production of annual weeds persisting through cropping phases replenishes/establishes viable seed banks from which these weeds will continue to interfere with crop production. Harvest weed seed control (HWSC) systems are now viewed as an effective means of interrupting this process by targeting mature weed seed, preventing seed bank inputs. However, the efficacy of these systems is directl...
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...
ecosystem pollution and weed resistance to herbicides have led researchers to pay more attention to natural herbicides. to examine allelopathic effects of liquorice, rosemary, chamomile and eucalypt on germination characteristics and early growth of wheat (triticum aestivum l.) and wild oat (avena fatua l.), a factorial experiment based on completely randomized design with 20 treatments and fou...
Allelopathic activity of wheat (Triticum aestivum L.) has previously been associated with the production phenolic acids and flavonoids (PAF), benzoxazinones (BXZs) phenoxazinones (PXZs). The biosynthesis BXZs is closely regulated during cereal growth, accumulation highest in young tissues variation genotype environmental conditions. This review focused on BXZ metabolites their impact germinatio...
Poaceous weeds are prolific and competitive in winter crops, but they are more insidious in wheat due to their similar morphology and growing requirements. Herbicides are effective and efficient tools of weed management, however, they are vulnerable to resistance, and herbicides with different modes of action might check the dominance of a particular weed flora. The current study was undertaken...
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