نتایج جستجو برای: helicoverpa armigera
تعداد نتایج: 1967 فیلتر نتایج به سال:
The assembly of monomeric protein subunits into a viral capsid is a finely tuned molecular process. In response to subtle changes in environmental conditions, this supramolecular complex can dramatically reorganize. Defining the forces that control this structure and the cooperative action of subunits has implications for biology and nanotechnology. The small icosahedral RNA tetravirus family m...
Study and research of Bt (Bacillus thuringiensis) transgenic plants have opened new ways to combat insect pests. Over the decades, however, insect pests, especially the Lepidopteran, have developed tolerance against Bt delta-endotoxins. Such issues can be addressed through the development of novel toxins with greater toxicity and affinity against a broad range of insect receptors. In this compu...
زنبور trichogramma brassicae bezdenko همه ساله در انسکتاریومهای دولتی و خصوصی استان گلستان پرورش مییابد و به منظور کنترل جمعیت کرم غوزهی پنبه، helicoverpa armigera (hübner) و کرم ساقهخوار برنج، chilo suppressalis (walker)در سطح مزارع گوجهفرنگی، پنبه، سویا و برنج رهاسازی میشود. با توجه به اهمیت کنترل کیفیت در بهینه سازی برنامه های پرورش انبوه، در این پژوهش تغییرات ویژگیهای این زنبور ط...
a study was carried out to map dispersal of trichogramma brassicae bezd. on tomato in a 0.5 ha field. first, 1, 5, 10, 15, 20 and 25 meter distances from the central point of the field were marked in form of squares. on each square, 8 points were selected and a wooden stake of 1.5 m length was vertically secured into the soil at each point equal to plant height and bearing a yellow sticky trap ...
The growth and development of Helicoverpa armigera was observed in the laboratory by feeding them on different foods viz; leaf, flower and fruit of lady finger, cotton, pigeon pea and chick pea. Based on the food ingested, food digested and food excreted as well as on weight and size of the larvae and the duration of larval period, the fruit of chick pea was found to be the most suitable food f...
the larval feeding preference and damage potential of helicoverpa armigera (hübner) on promising cotton genotypes/hybrid were studied during 2004 under laboratory and field conditions at ccs haryana agricultural university, hisar, haryana, india. third and fifth instar larvae were allowed to feed on different types of fruiting body (squares, flowers and young bolls) of various genotypes/hybrid ...
nutritional indices of helicoverpa armigera (hübner) larvae, an economic insect pest of agricultural crops in the world, were studied on five corn hybrids (sc700, sc704, sc500, dc370 and sc260) when incorporated into artificial diets under laboratory conditions at 25 ± 1 °c, relative humidity of 65 ± 5% and a photoperiod of 16:8 (l: d) h. the highest values of consumption index (ci) and relativ...
Investigations were carried out at Main Pearl Millet Research Station, Junagadh Agricultural University, Jamnagar (Gujarat) during kharif 2021 revealed that shoot fly, Atherigona soccata, stem borer, Chilo partellus, and ear head worm, Helicoverpa armigera the major insect-pests in pearl millet. Significant correlation was found of borerand with different weather parameters. There a considerabl...
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