منابع مشابه
Optimal Spraying in Biological Control of Pests
Fairly recent researches have highlighted the role that generalist predators, i.e., predators that feed on several species, have on pests in agriculture, so that their presence in agroecosystems should be fostered [26]. For instance, it is well known that toward the end of the nineteenth century, the European vineyards Vitis vinifera suffered from the accidental introduction of the plant louse ...
متن کاملpolitical economy of china in central asia
this research is about the political economy of china in central asia. in this research the political & economic interactions affected on chinas political economy in central asia are examined. chinas goal of presence in central asia including political-security, economic and energy goals is described in one part. in another part, the trade relations between china and central asian countries ar...
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ژورنال
عنوان ژورنال: Bulletin of the Entomological Society of America
سال: 1983
ISSN: 0013-8754
DOI: 10.1093/besa/29.3.72