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DANAK MEVALILARDA UCHRAYDIGAN OLCHA ARRAKASHI (CALIROA CERASI L) DAN HIMOYA QILISHDA BACILLUS THURINGIENSIS SHTAMMLARINING INSEKTISID FAOLLIKKA EGALIGI

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Abstract

<em>Olchaarrakashi qurti (Caliroa cerasi L ), Respublikamizda gilos, olcha, nok va olxo’rining muhim halokatli zararkunandasi hisoblanadi. C.cerasi bilan kurashish uchun entomopatogen bakteryalarning salohiyati baholandi. Bacillus thuringiensis bilan kasallangan C. cerasi lichinkalariga ta'sir qilish usullari va spora/kristal kontsentratsiyasi 1ml da (2,0 x 10<sup>8</sup> spora/kristal ml) ta'siri dala sharoitida o'rganildi. Fermer xoʼjaligida C.cerasi ga qarshi eng yuqori entomotsidlik faollikni B.thuringiensis 26 shtammi 14-kuni 83,0 - 84,7% ni, B.thuringiensis 91 shtammi esa 79,6 - 81,1% ko‘rsatdi. Ushbu tadqiqot shuni ko'rsatadiki, B.thuringiensis C.cerasi bilan kurashish uchun yaxshi imkoniyatga ega ekan</em>

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