نتایج جستجو برای: Crop protection

تعداد نتایج: 245293  

Journal: :Journal of Chemical Education 1956

2000
G. Edwards-Jones O. Howells

Sustainability is de®ned as the ability of a system to `continue'. In view of this de®nition, several aspects of the crop protection activity in organic farming are reviewed according to their ability to `continue'. As no absolute measure of sustainability is available, this analysis takes the form of a comparison between organic and conventional crop protection methods. Two elements of crop pr...

Journal: :Plant Pathology 1999

Journal: :Kagaku To Seibutsu 1987

Journal: :Current Biology 2011
Michael Gross

World population is likely to cross the threshold of 7 billion in October, meaning it has doubled since the late 1960s. In relative terms, the growth has already slowed down significantly since its peak in 1963. However, in absolute numbers, there is no escaping the fact that the number of mouths that need feeding is still rising, while the agricultural surface available to produce food is rema...

2006
Deborah Letourneau Ariena van Bruggen

Introduction Organic farming systems are challenged by many of the same crop protection issues as conventional farming systems. Approaches to crop protection in organic agriculture differ widely among growers globally and regionally. At one end of the spectrum, organic growers use substitution-based approaches in large-scale operations to capture premium prices in a niche market. At the other e...

Journal: :Bioorganic & medicinal chemistry 2009
Franck E Dayan Charles L Cantrell Stephen O Duke

The tremendous increase in crop yields associated with the 'green' revolution has been possible in part by the discovery and utilization of chemicals for pest control. However, concerns over the potential impact of pesticides on human health and the environment has led to the introduction of new pesticide registration procedures, such as the Food Quality Protection Act in the United States. The...

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