Ecological Effect of Regional Agricultural Landscape Pattern on Wheat Aphids and Their Natural Enemies
نویسندگان
چکیده
منابع مشابه
Effects of Wheat-Maize Intercropping on Population Dynamics of Wheat Aphids and Their Natural Enemies
To study the effects of wheat-maize intercropping on the population dynamics of wheat aphids and their natural enemies, wheat-maize intercropping patterns were divided into four levels: 8:2, 6:2, and 4:2 intercropping, and monoculture wheat. The results showed that as the wheat coverage rate decreased, the quantities of immigrating winged aphids and their natural enemies significantly differed;...
متن کاملA survey of alfalfa aphids and their natural enemies in Isfahan, Iran, and the effect of alfalfa strip-harvesting on their populations
در طی دو سال (1384-1383) نمونه‌برداری از جمعیت شته‌های یونجه و دشمنان طبیعی آن‌ها در اصفهان، در مجموع 4 گونه شته و 58 گونه از دشمنان طبیعی آن‌ها شامل 45 گونه شکارگر، 11 گونه پارازیتوئید و 2 گونه کنه‌ی پارازیت جمع‌آوری و شناسایی شد. علاوه بر این، 5 گونه هیپرپارازیتوئید نیز جمع‌آوری گردید. در هر روز نمونه‌برداری، شش نمونه هر کدام شامل 20 بار تور‌زدن به وسیله‌ی یک تور حشره‌گیری با قطر 38 سانتی‌مت...
متن کاملCorrigendum: Effects of agricultural intensification on ability of natural enemies to control aphids
Agricultural intensification through increasing fertilization input and cropland expansion has caused rapid loss of semi-natural habitats and the subsequent loss of natural enemies of agricultural pests. It is however extremely difficult to disentangle the effects of agricultural intensification on arthropod communities at multiple spatial scales. Based on a two-year study of seventeen 1500 m-r...
متن کاملpopulation dynamics of alfalfa aphids and their natural enemies, isfahan, iran
population dynamics of three main alfalfa aphids, namely: pea aphid, acyrthosiphon pisum (harris), spotted alfalfa aphid, therioaphis trifolii forma maculata (buckton), black alfalfa aphid, aphis craccivora koch, and their most abundant predators and parasitoids in three sites and in two subsequent years in isfahan, iran, were investigated. the results revealed that frequency and temporal occur...
متن کاملpopulation dynamics of canola aphids and their dominant natural enemies in ahvaz
in this research, population fluctuation of canola aphids and their natural enemies were investigated during 2007-2008. random samples of 50 plants were taken twice a week. mustard aphid (lipaphis erysimi kalt.), green peach aphid(myzus persicae sulzer)and cabbage aphid (brevicoryne brassicae l.) were recorded on canola. however,the mustard aphid with relative frequency of 79% was dominant. the...
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ژورنال
عنوان ژورنال: SCIENTIA SINICA Vitae
سال: 2016
ISSN: 1674-7232
DOI: 10.1360/n052015-00219