منابع مشابه
control of the optical properties of nanoparticles by laser fields
در این پایان نامه، درهمتنیدگی بین یک سیستم نقطه کوانتومی دوگانه(مولکول نقطه کوانتومی) و میدان مورد مطالعه قرار گرفته است. از آنتروپی ون نیومن به عنوان ابزاری برای بررسی درهمتنیدگی بین اتم و میدان استفاده شده و تاثیر پارامترهای مختلف، نظیر تونل زنی(که توسط تغییر ولتاژ ایجاد می شود)، شدت میدان و نسبت دو گسیل خودبخودی بر رفتار درجه درهمتنیدگی سیستم بررسی شده اشت.با تغییر هر یک از این پارامترها، در...
15 صفحه اولComparison Herbicide Treatments for the Control of Grass and Cyperus Species
The results are presented of a series of herbicide experiments conducted on two soils in Natal; a heavy clay and a light sand respectively having high and low organic matter contents. The experiments were designed to evaluate preand post-emergent herbicide treatments on the specific weeds Panicum muximum, Cyperus rotundus, C. esculentus and annual grasses. Alachlor/2,4-D was the most successful...
متن کاملEvaluation of Crop Seed Powders as Amendments for Purple Nutsedge (Cyperus rotundus) Control Compared to the Traditional Herbicide, Roundup
This thesis, written by Eric Betancourt, and entitled Evaluation of Crop Seed Powders as Amendments for Purple Nutsedge (Cyperus rotundus) Control Compared to the Traditional Herbicide, Roundup, having been approved in respect to style and intellectual content, is referred to you for judgment. We have read this thesis and recommend that it be approved. iii DEDICATION I dedicate this thesis to m...
متن کاملResponse of Deeproot Sedge (Cyperus entrerianus) to Herbicide and Prescribed Fire in Texas Coastal Prairie
Introduced accidentally from South America, deeproot sedge is rapidly expanding in a variety of habitats throughout the southeastern United States. Of particular concern is its rapid expansion, naturalization, and formation of monocultures in Texas coastal prairie, one of the most imperiled temperate ecoregions in North America. The objective of this research was to examine how deeproot sedge r...
متن کاملNutsedge (cyperus Spp) Control in Alfalfa
The competitive advantage of purple and yellow nutsedge in low desert alfalfa production areas of Southern California and Arizona is due to a combination of factors. These include frequent harvest and irrigation, high incident solar radiation, high summer temperatures that are supraoptimal for alfalfa growth, and the presence of C4 photosynthesis and vegetative reproduction (e.g., tubers) in nu...
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ژورنال
عنوان ژورنال: Journal of Weed Science and Technology
سال: 1962
ISSN: 0372-798X,1882-4757
DOI: 10.3719/weed.1962.93