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Pruning Technique for Second Fruiting Cycle in Cotton Crop

机译：棉花第二季结实的修剪技术

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Field experiments were conducted at Central Institute for Cotton Research, Regional station Coimbatore, during 2012-13 on Su (Gbarbadense) and Suraj (Ghirsutum) cotton under poly-mulched condition, to study the effect of deep pruning and nutrie consortia spray on yield and fibre quality. Pruning was effected soon after 3rd picking and new sprouts initiated within 8-10 daj Squaring started within 40 days and boiling within 70 days. Photosynthetic rate, nitrate reductase activity and chlorophyll content the leaves of pruned crop were marginally lower compared to the normal crop. However, nutrient consortia spray boosted the activil significantly in both normal and pruned crop. At harvest, 31 bolls per plant were recorded in pruned crop compared to 44in the normi crop of Suraj. Boll size was significantly smaller in pruned than the normal crop. Nutrient consortia spray could increase the boll siz marginally. Irrespective of the nutrient consortia spray, kapas yield of 31.4 q/ha was harvested from normal crop and an additional yiel of 20.1 q/ha by pruning technique. Nutrient consortia spray increased yield significantly in both the normal and pruned crop in Sura and Suvin. Thus, an additional yield of 60-70% could be attained by pruning technique. Fibre quality parameters were not affected dut to pruning. The FQI was 388 for pruned crop compared to 353 for normal crop. The study indicated that second fruiting cycle in cottor is possible by giving appropriate pruning followed by nutrient managementto realize additional yield in the same season.
机译：在2012-13年间，在棉花中心的Su （Gbarbadense）和Suraj（Ghirsutum）棉花上，在中央棉花研究所的区域站Coimbatore进行了田间试验，以研究深层修剪和坚果仁喷剂对产量的影响和纤维质量。第三次采摘后立即进行修剪，并在8-10 dj内启动新芽。平方在40天内开始，在70天内沸腾。修剪后的作物叶片的光合速率，硝酸还原酶活性和叶绿素含量比正常作物略低。然而，在正常和修剪的农作物中，养分财团喷雾明显增强了活性。收获时，修剪过的农作物中每株植物记录有31个棉铃，而Suraj的普通作物中则记录了44个棉铃。修剪后的棉铃大小显着小于正常作物。营养财团喷雾剂可能会稍微增加棉铃虫的发生率。无论采用何种营养组合喷雾，从正常作物中收获的卡帕斯产量为31.4 q / ha，通过修剪技术获得的额外产量为20.1 q / ha。苏拉州和苏温州的正常和修剪作物的养分财团喷雾显着提高了产量。因此，通过修剪技术可以达到60-70％的额外产率。修剪后纤维质量参数不受影响。修剪过的作物的FQI为388，而正常作物为353。研究表明，通过适当的修剪和随后的养分管理，在同一个季节实现更高的产量，是可能在棉花糖中产生第二个结实周期的。

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