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首页> 外文期刊>Crop Research >Nitrogen levels and scheduling studies in Bt cotton hybrids.
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Nitrogen levels and scheduling studies in Bt cotton hybrids.

机译：转Bt棉杂交种的氮水平和调度研究。

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摘要

The changed vegetative and reproductive growth patterns in Bt cotton hybrids emphasized the need for agronomical studies. A field experiment was conducted during kharif 2005-06 and 2006-07 at Regional Agricultural Research Station, Warangal to study the nitrogen levels and schedules in early and late maturing Bt cotton hybrids. In the first season, Pro Agro-368 Bt significantly recorded higher boll weight and seed cotton yield over RCH-2 Bt, whereas in second year they were at par. Nitrogen response was observed upto 120 kg N/ha only. Scheduling of nitrogen fertilizers significantly influenced boll number and seed cotton yields. In both the years, application of N at 20, 40, 60 and 80 days significantly recorded higher boll number and seed cotton yield over recommended practice of application at 30, 60, 90 and 120 days.
机译：Bt棉杂交种的营养生长和生殖生长模式发生了变化，强调了进行农艺学研究的必要性。在2005-06和2006-07 khakharif期间在Warangal的区域农业研究站进行了田间试验，以研究早熟Bt棉和早熟Bt棉杂交种的氮水平和时间表。在第一个季节，Pro Agro-368 Bt的棉铃重和籽棉产量明显高于RCH-2 Bt，而第二年则达到同等水平。仅在高达120 kg N / ha的条件下观察到氮响应。氮肥的施用计划显着影响铃数和籽棉产量。在这两年中，与建议的30、60、90和120天施用方式相比，施用20、40、60和80天施用氮显着提高了铃数和籽棉产量。

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