Effect of Tillage Number and Metribuzin Herbicide Dosage on Potato Weed Structure

پژوهش های حفاظت گیاهان ایران

Article 9, Volume 25, Issue 1 - Serial Number 11, March 2011   

Document Type: Research Article

DOI: 10.22067/jpp.v25i1.9594

Authors

saeideh Seyyedinasab^* ; hamidreza mohamadduost; Gadir Nouri ganbalani; ali Asghari

گروه گیاهپزشکی

Abstract

Abstract
In order to evaluate the effect of tillage number and metribuzin herbicide doses on weeds structure of potato, an experiment was conducted as the factorial in randomized complete block design with three replications in 2009 in the Sarab region of East Azarbaijan Province. The first factor was tillage number with a single moldboard plowing at autumn and double plowing (fall and spring moldboard plowing) and the second factor was different doses of metribuzin herbicide (Sencor) at three levels, 0 (control), 0.5 and 1 kg ai ha-1. The results showed that double plowing compared with single autumn tillage reduced weed density by 65.3% at potato emergence stage. Metribuzin application compared with control decreased weeds density 40 to 58 percent and their dry weight 38 to 60 percent. Highest tuber yield (36/29 t ha-1) was achieved in single autumn tillage treatment that was 14/66 percent over the potato tubers yield in the double plow.

Key words: Integrated Weed management, Metribuzin, Potato, Tillage number, Weed structure