Effect of Water Hardness on Sinosulfuron Efficacy in Redroot Pigweed and Common Lambsquarter Control

پژوهشهای زراعی ایران

Article 10, Volume 10, Issue 1 - Serial Number 25, April 2012, Pages 84-90   

Document Type: Research Article

DOI: 10.22067/gsc.v10i1.14407

Authors

E Izadi Darbandi^* ; F Azarian; N Nessari

Abstract

In order to study the effect of water hardness on sinosulforun efficacy an experiment was carried out under controlled conditions in 2010 at the College of Agriculture, Ferdowsi University of Mashhad. Treatments included herbicides doses at 6 levels (0, 200, 250, 300, 350 and 400 g.a.i ha-1), calcium carbonate concentration at 6 levels (0, 100, 300, 600, 1000 and 1500 ppm) and weeds at 2 levels (redroot pigweed and common lambsquart), were evaluated as a completely randomized design in a factorial arrangement with three replications. Spray was done at 6-8 weeds leaf stag. 2 weeks after spray weeds survival and shoot dry matter measured. For results analysis, data analysis of variance was done and plants response to sinosulforun doses on deferent water hardness level was fitted with sigmoid 4 parametric equations to the shoot biomass data as a function of the herbicide doses and was used to calculate the herbicide dose for 50% inhibition of plants shoot growth (ID50). Results showed herbicide rate and water hardness had significant effect (P

Keywords

Water hardness; water quality; Herbicide; Weed