Effect of Various Doses Application of Metribuzin Herbicide and Plant Density on Yield and Physiological Indices of Wheat (Triticum aestivum)

پژوهشهای زراعی ایران

Article 18, Volume 10, Issue 2 - Serial Number 26, July 2012, Pages 401-411   

Document Type: Research Article

DOI: 10.22067/gsc.v10i2.16290

Authors

M Naghshbandi^* ; M. A Baghestani; E Zand; S Mansurian

Abstract

In order to survey the influence of metribuzin herbicide on physiological indices and yield of wheat, an experiment was conducted at experimental field of Plant Pest and Disease Research Institute, Karaj, Iran during 2007. Treatments were in factorial arrangement laid out in four randomized complete blocks. The factors investigated were three plant densities: 400, 500 and 600 plant.m-2 and metribuzin doses: 0, 0.2, 0.4, 0.6 and 0.8 kg.ha-1. The result showed that the highest physiological indices and grain yield were obsevered in densities of 500 plant.m-2 and in applications of 0.6 and 0.8 kg. ha-1. Higher rates could be provided an acceptable level of weed control. Plant density could provide good control on weed and could be decrease using herbicide too by decreasing of available light for weed. This strategy can reduce the peresure of selection in resistant weeds population.

Keywords

Weed; wheat; grain yield; physiological indices