The development of resistance to the herbicide Segment in the populations of barnyard grass Echinochloa

Abstract

The development of resistance to the herbicide Segment in the populations of barnyard grass Echinochloa.
N.G. LUKACHEVA, A.V. KOSTYUK (Far Eastern Research Institute of Plant Protection, Primorsky Krai, Kamen-
Rybolov village).

The article discusses the reasons for the increase in the infestation of rice fields with Echinochloa plants and trends to spread in crops. The results of studies conducted in 2010–2018 on the experimental basis of the Far Eastern Research Institute of Plant Protection in a growing house are presented. It was noted that in the rice fields of Primorsky Krai were the biotypes of barnyard grass resistant to the herbicide Segment (D.V. azimsulfuron, 500 g/kg). It is proved that the resistance of barnyard grass to the drug segment is a cross that occurs in biotypes with previously developed resistance to the herbicide Facet. The current situation indicates the need to monitor the sensitivity of weeds not only to widely used, but also to new herbicides put into practice.