Effect of three rotation systems on weed seed bank of barely fields in Karaj

پژوهشهای زراعی ایران

Article 5, Volume 4, Issue 2 - Serial Number 8, 2006, Pages 231-242   

Document Type: Research Article

DOI: 10.22067/gsc.v4i2.1264

Authors

M Oveisi^{* 1}; P Rezvani Moghaddam²; M Rostami¹; M. A Baghestani¹; M Nasiri mahalati¹

¹-

²Department of Agrotechnology, Faculty of Agriculture, Ferdowsi University of Mashhad

Abstract

Rotation can be used as an approach for weed management, because density and combination of weed seed bank may be affected by rotation. In this study effect of rotation in diversity and density of weed seed was studied in three rotation systems (fallow – barely, maize – barely and canola – barely). Results showed that fallow – barely rotation system have high population density in seed bank and highest amount of Shannon diversity index (H = 0.84). In canola – barely rotation system because of different herbicide uses and special traits of canola, population of weed seeds in seed bank was significantly lower that other rotation systems. Results showed that canola – barely rotation system because of combination special herbicide and agronomical and biological characteristic of canola, in comparison with other rotation systems is more successful in decreasing of weed seed bank.