نتایج جستجو برای: varamin
تعداد نتایج: 304 فیلتر نتایج به سال:
Background and Objective: Irrigation of agricultural lands with treated wastewater in the main part of the Varamin plain, the highly populated urban areas of the middle part of the plain, and the presence of industries have increased the actual risk of heavy metal contamination of groundwater. Therefore, the concentrations of heavy metals were investigated in this study in order to assess the r...
the agromyzid leafminers, liriomyza sativae blanchard and l. trifolii (burgess) (dip-tera: agromyzidae) are major pests that attack vegetables in varamin, tehran province. the parasitoids (hymenoptera: eulophidae) of these pests were investigated during 2003. the leafminer infested leaves were collected from different host plants, in particular cu-cumber (cucumis sativus l.,) and preserved unde...
سفیدبالک پنبه Bemisia tabaci (Hemiptera.: Aleyrodidae) یکی از مهمترین آفات پنبه است.برای کنترل سفیدبالک میتوان از روشهای بیولوژیک، شیمیایی و زراعی از جمله ارقام مقاوم استفاده نمود. در این مطالعه، مقاومت ژنوتیپهای مختلف پنبه نسبت به سفیدبالک پنبه در شرایط مزرعه در منطقه گرمسار ارزیابیگردید. برای این منظور خسارت سفیدبالک پنبهروی 10 رقم طی آزمایشی در قالب طرح کرتهای خرد شده با چها...
abstract the present study was carried out for developing and evaluating of the optimization model of cropping pattern in irrigation networks using analytical hierarchy process (ahp). the model was programmed into two sub-models. the objective of the first sub-model was ranking of crop appropriately, and the objective of the second sub-model was ranking of cropping area of each crop. ten criter...
drought, known as one of the serious natural disasters, has adversely affected climatic equilibrium of the countries during recent years, bringing about various economic and social losses. the purpose followed in this study was to assess the effective factors involved in the adoption of the type of management wheat farmers of varamin township choose to alleviate the situation. the methodologica...
carob moth, ectomyelois ceratoniae zeller (lep.: pyralidae) is considered as the most important pest of pomegranate in iran causing serious damages up to 80% at pre and post harvesting stages. in this study larval parasitoids of carob moth were collected from three regions of production sites of pomegrante namely: varamin, qom, and saveh during 2007. eight species were collected from varamin, 7...
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