نتایج جستجو برای: the sunn pest
تعداد نتایج: 16055726 فیلتر نتایج به سال:
Field experiments were conducted in Maryland to investigate the influence of sunn hemp cover cropping in conjunction with organic and synthetic fertilizers on the nematode community in a zucchini cropping system. Two field treatments, zucchini planted into a sunn hemp living and surface mulch (SH) and zucchini planted into bare-ground (BG) were established during three field seasons from 2009 t...
introduction: codling moth, cydia pomonella is one of the key pests of apple in khorasan razavi province which annually causes severe fruit damage to apple crop. there are several ways that are used to control and prevent injury to apple products in the world. the most successful and widespread use of pheromones has been in monitoring traps. mating disruption method by pheromones takes place wh...
In this study, the control method of greater wax moth using male sterilization technique with gamma ray and chemical control methods were examined and compared. In order to determine the safe and effective dosage of gamma-ray to sterilize male pupae of the greater wax moth, an experiment was conducted in a complete randomized design with 5 treatments and 3 replicates with 50 male pupae in each ...
Greenhouse whitefly, Trialeurodes vaporariorum West. is one of the most important pests of the field crops and ornamental plants in greenhouses. Pest control is based on using chemical insecticides and biological control agents. In this study, the efficiency of the green lacewing, Chrysoperla carnea ( Steph.) with release ratios of 1:1, 1:5, 1:10, 1:15, and 1:20 (predator:prey) using eggs in ch...
One of the most important pest in the Oak forest of Kurdistan province is Oak leaf roller moth, Tortrix viridana L. (Lep.: Tortricidae). Use of pheromone trap is one of the suitable methods for monitoring and controlling of the pest. In this work, three main factors which affect the efficiency of traps including trap type, pheromone dose and installation height trap were studied. Four types of ...
This studyaimed to explain thebehavior and attitudes of farmersin the adoption ofIntegrated PestManagement (IPM) technologiesinrice fields. The main instrument ofresearch was a questionnaire whose validitywas confirmed bya panel of professorsandexecutive experts, and its reliabilitywas confirmed by apreliminarytest.The sample employed inthe research study comprisedfarmers who were participa...
today, with the advanced statistical techniques and neural networks, predictive models of distribution have been rapidly developed in ecology. purpose of this research is to predict and map the distribution of tetranychus urticae koch (acari: tetranychidae) using mlp neural networks combined with genetic algorithm in surface of farm. population data of pest was obtained in 2016 by sampling in 1...
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