منابع مشابه
Biological control of weeds.
Classical biological control, i.e. the introduction and release of exotic insects, mites, or pathogens to give permanent control, is the predominant method in weed biocontrol. Inundative releases of predators and integrated pest management are less widely used. The United States, Australia, South Africa, Canada, and New Zealand use biocontrol the most. Weeds in natural ecosystems are increasing...
متن کاملThe Future of Biological Control of Weeds with Insects: No More ‘Paranoia’, No More ‘Honeymoon’
To meet the future challenges facing biological control of weeds, two issues are considered: first the ‘paranoia’ about the threat of biocontrol agents to non-target plant species, and second, the ‘honeymoon’ regarding the lack of accountability for projects that failed to achieve their desired objectives. With a suggested new mindset on these issues, proposals are made to deal with five curren...
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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 اولBiological Control of Weeds Using Plant Pathogens
Changes in program directions at the Saskatoon Research Centre have resulted in the organization of a research team equipped to develop microorganisms for the biological control of important agricultural weeds. This paper presents a brief introduction to the science of inundative biological control and an overview of the research progress made on controlling Canada thistle, wild oats, and green...
متن کاملApplying molecular-based approaches to classical biological control of weeds
The use of molecular techniques is rapidly growing as the tools have become more diverse and powerful, more widely available, and easier to implement. Molecular analyses are able to elucidate information about target weeds that is critical to improving control success, such as taxonomic clarification, evidence of hybridization and cryptic species, better development of test plant lists, populat...
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ژورنال
عنوان ژورنال: Journal of Weed Science and Technology
سال: 1974
ISSN: 0372-798X,1882-4757
DOI: 10.3719/weed.1974.14