10 research outputs found
Galinsoga parviflora response to different application rates of the herbicide Chwastox Turbo 340 SL in spring barley
The aim of this study was to evaluate the response of Galinsoga parviflora
to different doses of the herbicide Chwastox Turbo 340 SL [2-methyl-4-
chlorophenoxyacetic acid (MCPA) + dicamba] used alone and with an adjuvant.
The study was conducted on the spring barley cultivar ‘Suweren.’ During the
tillering stage of spring barley, a weed control treatment was applied using
Chwastox Turbo 340 SL at a rate of 100% and at rates reduced by 33% and 50%,
and was applied either alone or with an oil adjuvant. Plots without herbicide and
adjuvant application were the control treatment. The present study showed that
in spring barley the largest plants of G. parviflora, which produced the highest
number of branches, flower heads, and achenes, occurred in the control treatment
where no herbicide and adjuvant were applied. Morphology, productivity, and
biomass were not found to vary greatly between G. parviflora plants occurring
in the plots where the reduced rates of Chwastox Turbo 340 SL and in those
where the manufacturer’s recommended rate were applied. The number of
achenes produced by G. parviflora was positively correlated with plant height and
negatively with plant biomass. The germination capacity of G. parviflora diaspores
was not significantly different between the herbicide protection treatments