Response of cotton to tillage and post-emergence herbicides in wheat-cotton system in Pakistan

Issue Date

8-2016

Abstract

Conservation tillage with broad-spectrum herbicides may have the potential to control weeds and enhance cotton (Gossyplum hirsutum L.) yield. Field experiment was conducted in 2010 and 2011 at Agriculture Research Institute. D. I. Khan, Pakistan to examine tillage and herbicide effects in weed control and cotton yield in wheat-cotton system. The experiment was arranged in split plot in RCBD with 4 replications. The man plot treatment comprised of three tillage systems, including zero (ZT), reduced (RT), and conventional tillage (CT), while the sub plot was weed control treatments namely, haloxyfop-R-methyl 10.8 EC (108 g a. i. haˉ¹), lactofen 24 EC (168 g a.i. haˉ¹), haloxyfop + lactofen, hand weeding, and weedy check. Broad-spectrum herbicides (haloxyfop + lactofen) reduced weeds by 92 and 94%, and produced highest lint yield (1222 and 1515 kg haˉ¹) in 2010 and 2011, respectively. Relative weed density was modified by tillage with lowest values recorded in CT. However, RT with broad-spectrum herbicides had the maximum weed reduction and lowest dry weed biomass (DWB). Reduced tillage with broad-spectrum herbicides produced maximum plant height, 100-seed weight, and lint yield. This combination is an optimum weed management strategy the contributes significantly to cotton production. However, if deep-rooted perennial weeds persist, CT with broad-spectrum herbicides may be occasionally required.

Source or Periodical Title

Philippine Journal of Crop Science

ISSN

0115-463x

Volume

41

Issue

2

Page

61-70

Document Type

Article

Frequency

tri-quarterly

Physical Description

tables

Language

English

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