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首页> 外文期刊>Journal of Cotton Research and Development >Performance of Bt and non Bt cotton cultivars under different sowing environment of south western Punjab
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Performance of Bt and non Bt cotton cultivars under different sowing environment of south western Punjab

机译：BT和非BT棉品种不同播种环境下的BT和非BT棉品种

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摘要

A field experiment was conducted at Punjab Agricultural University, Regional Research Station, Faridkot and Bathinda during kharif 2017 to evaluate the effects of sowing dates on growth and yield attributes of different cotton cultivars. Three sowingdates i.e. April 20, May 10 and May 30were kept in main plots while four cotton cultivars including two non Bt (F 2228 and F 1861) and Bt cultivars (NCS 855 BGII and RCH 650 BGII) were kept in sub plotsof split plot design replicated thrice. Pooled dataanalysis for both locations indicated a significant decline in seed cotton yield of all the tested cultivars gradually with each delay in sowing date. Cotton crop sown on April 20 (2947 kg/ha) and May 10 (2727 kg/ha) recorded 29.1 and 7.5 per cent higher seed cotton yield (SCY) as compared to May 30 (2091 kg/ha) sowing. This increase in SCY was mainly attributed to higher growth attributes like leaf area index which lead to improved boll number and better boll weightover late sown crop. Among tested cultivars, Bt hybrids i.e., NCS 855 BGII (2997 kg/ha) and RCH 650 BGII (2884 kg/ha) recorded higher seed cotton yield as compared to non Bt hybrids i.e., F 2228 (2295 kg/ha) and F 1861 (2177 kg/ha) owing to higher number of bolls/plant and boll weight. Therefore, sowing in April using Bt hybrids was found to be the best option for higher seed cotton yield realization in south western Punjab.
机译：在Kharif 2017年旁遮普农业大学，地区研究站，法里达托和浴台进行了一个田间试验，以评估播种日期对不同棉花品种的生长和产量属性的影响。三个赛艇IE 4月20日，5月10日和5月30日在主图中保存，而四个棉质品种包括两个非BT（F 2228和F 1861）和BT品种（NCS 855 BGII和RCH 650 BGII）被保存在分裂绘图设计中复制三次。两个地点的汇总数据分析表明，随着播种日期的每个延迟，所有测试品种的种子棉花产量显着下降。 4月20日（2947千克/公顷）和5月10日（2727千克/公顷）播种的棉花作物，与5月30日（2091千克/公顷）播种相比，种子棉花产量（SCY）恢复了29.1和7.5％。这种SCY的增加主要归因于叶面积指数等较高的增长属性，导致鲍尔数量改善和更好的棉铃重量播种作物。在测试的品种中，与非BT杂种（2295kg / ha）和f相比，Bt杂种（2997kg / ha）和rch 650 bgii（2997kg / ha）和rch 650 bgii（2884kg / ha）和rch 650 bgii（2884kg / ha）记录较高的种子棉产率。 1861（2177千克/公顷）由于棉铃/植物和棉铃重量较多。因此，发现使用BT杂种的4月播种是在旁遮普南部南部较高种子棉花产量实现的最佳选择。

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