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ҒЎЗА КЎСАКЛАРИ ОЧИЛИШИДА ХОРИЖИЙ ВА МАҲАЛЛИЙ ДЕФОЛИАНТЛАРНИНГ АҲАМИЯТИ

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MAQOLA ANNOTATSIYASI

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Хорижий Энто-Дефол дефолиантининг ғўзани сунъий баргсизлантириш учун ғўза кўсаклари 30-40% очилганда, гектар ҳисобига 0,200 л/га меъёри қўлланилганда, барглар тўкилиши қолган вариантларга нисбатан юқори натижа кўрсатди. Маҳаллий ФанДЕФ-аъло дефолиантининг 7,0 л/га меъёри қўлланилган вариантида эса қолган вариантларга нисбатан самарадорлиги юқори бўлди. Ғўза кўсаклари очилишида қайси дефолиантни қўллаш яхши самара бериши ёритилган. Дефолиациянинг иккинчи (50-60% кўсаклар очилганда) муддатида дефолиантлар самарадорлиги юқори бўлиб, кўсакларнинг очилиш фоизи биринчи муддатга нисбатан юқорилиги сабабли ҳосилдорлик ҳам ошиқча бўлиб, бунинг эвазига эса рентабеллик 1,1-5,1% га ошди. С-8290 ғўза нави С-6775 ғўза навига нисбатан 10-15 кунга эрта етилиши эвазига унинг барча кўрсаткичлари юқори бўлди, лекин ҳар икки ғўзанинг барг пластинкасида катта фарқ бўлмаганлиги боис қўлланилган дефолиантларнинг меъёрида ҳам фарқ кузатилмади.

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# дефолиация ва дефолиантлар турла# ғўза барглари# қуриган ва ярим қуриган барглар# дефолиация и виды дефолиантов# листья хлопчатника# сухие и полисухие листья# types of defoliation and defolia# cotton leaves dry and semi-dry l

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