Effect of adjuvant concentration and carrier volume on large crabgrass (Digitaria sanguinalis) control with fluazifop

Foliar activity of the butyl ester of fluazifop on large crabgrass was determined by varying the concentration of a petroleum-based oil concentrate and the carrier volume. Increasing the concentration of petroleum oil or reducing the carrier volume improved large crabgrass control. Under greenhouse...

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Bibliographic Details
Published in:Weed technology 1989-01, Vol.3 (1), p.105-109
Main Authors: Smeda, R.J, Putnam, A.R
Format: Article
Language:English
Subjects:
ADJUVANT
ADJUVANTS
APPLICATION RATES
COADYUVANTE
COMPOSICION
COMPOSITION
Crops
DESHERBAGE
DIGITARIA
DOSE D'APPLICATION
DOSIS DE APLICACION
Drug carriers
ESCARDA
EXPERIMENTATION
EXPERIMENTOS
EXPERIMENTS
GREENHOUSES
HERBICIDAS
HERBICIDE
HERBICIDES
INVERNADEROS
Letter carriers
Nozzles
Petroleum
Phytotoxicity
Plants
SERRE
Soybeans
WEED CONTROL
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Summary:Foliar activity of the butyl ester of fluazifop on large crabgrass was determined by varying the concentration of a petroleum-based oil concentrate and the carrier volume. Increasing the concentration of petroleum oil or reducing the carrier volume improved large crabgrass control. Under greenhouse conditions, both visible injury and plant dry weight reflected greater control with adjuvant concentrations increasing from 0.62 to 5.0% v/v. Similarly, reducing carrier volumes from 374 to 47 L/ha increased grass control. No significant interaction between carrier volume and adjuvant concentration suggests the effects of these two variables are independent of one another. For both variables, effects were greater with sublethal rates of fluazifop.
ISSN:0890-037X
1550-2740
DOI:10.1017/S0890037X00031420