VEGETOS: An International Journal of Plant ResearchOnline ISSN: 2229-4473
Print ISSN: 0970-4078

All submissions of the EM system will be redirected to Online Manuscript Submission System. Authors are requested to submit articles directly to Online Manuscript Submission System of respective journal.

Impact of Harvest-aid Defoliants on Yield of American Cotton and Their Monetary Evaluation

Impact of Harvest-aid Defoliants on Yield of American Cotton and Their Monetary Evaluation

Field experiments were conducted during Kharif 2012 and 2013 to determine the effect of two harvest-aid defoliants i.e Dropp ultra® and Ethrel, their application rates and time of application on three American cotton cultivars. Pooled data revealed significantly higher seed cotton yield for Bt hybrids MRC7361BGII (3055.2kg /ha) and MRC7017BGII (2913.0 kg /ha) as compared to non Bt variety F1861 (2346.0 kg /ha). Among tested defoliants, Dropp ultra® @200ml/ha resulted in better SCY, lint and seed yield. This yield enhancement in case of Dropp ultra® @ 200 ml /ha further lead to significantly better net returns (₹ 85373/ha) and B:C ratio (2.31) over other treatments. Application of defoliants at 150DAS resulted in significantly improved net returns (₹ 79288/ha) as compared to earlier application (₹ 73632/ha) at 140 DAS. Improved water productivity and fertilizer use efficiency coupled with better B:C ratio for Dropp ultra® @ 200 ml /ha at 150 DAS clearly indicated its superiority among all treatments. Therefore Bt hybrids seems to be superior over the non Bt varieties and application of [email protected] or dropp ultra® @ 200 ml /ha at 150 DAS should be adopted as useful production practice for enhancing cotton yield under semi-arid conditions of north-western India.

Special Features

Full Text

View

Track Your Manuscript

Share This Page

Media Partners

Associations