Authors: KIM, D S¹; MARSHALL, E J P²; CASELEY, J C³; BRAIN, P⁴

Source: Weed Research, Volume 46, Number 2, April 2006 , pp. 175-184(10)

Publisher: Wiley-Blackwell

Abstract:

KimDS, MarshallEJP, CaseleyJC & BrainP (2006) Modelling interactions between herbicide dose and multiple weed species interference in crop–weed competition. Weed Research46, 175–184. Summary

The effects of a range of herbicide doses on crop–multiple weed competition were investigated. Competitivity of Galium aparine was approximately six times greater than that of Matricaria perforata with no herbicide treatment. Competitivities of both weeds decreased with increasing herbicide dose, being well described by the standard dose–response curve with the competitivity of M. perforata being more sensitive than that of G. aparine to a herbicide mixture, metsulfuron-methyl and fluroxypyr. A combined model was then developed by incorporating the standard dose–response curve into the multivariate rectangular hyperbola competition model to describe the effects of multiple infestation of G. aparine and M. perforata and the herbicide mixture on crop yield. The model developed in this study was used to predict crop yield and to estimate the herbicide dose required to restrict crop yield loss caused by weeds to an acceptable level. At the acceptable yield loss of 5% and the weed combination of 120 M. perforata plants m⁻² and 20 G. aparine plants m⁻², the model recommends a mixture of 1.2 g a.i. ha⁻¹ of metsulfuron-methyl and 120 g a.i. ha⁻¹ of fluroxypyr.

Keywords: dose–response; fluroxypyr; herbicide dose; metsulfuron-methyl; modelling; multiple weed competition

Document Type: Research article

DOI: http://dx.doi.org/10.1111/j.1365-3180.2006.00502.x

Affiliations: 1: R&D Park, LG Life Sciences, Ltd, Yuseong-gu, Daejeon 305-380, Korea 2: Marshall Agroecology Limited, Barton, Winscombe, Somerset, UK 3: Castan Consultants, Bristol, UK 4: Pfizer Global R&D, Sandwich, Kent, UK

Publication date: 2006-04-01

Related content

• In this: publication
• By this: publisher
• In this Subject: Plant Culture
• By this author: KIM, D S ;  MARSHALL, E J P ;  CASELEY, J C ;  BRAIN, P

Website © Publishing Technology. Article copyright remains with the publisher, society or author(s) as specified within the article.

• Terms and conditions
• Privacy policy
• Information for advertisers