Formation of resistance by biotypes of weeds of the genus Echinochloa to the herbicide Nomini, SC in the rice fields of the Primorsky Krai. N.G. LUKACHEVA, A.V. KOSTYUK
Keywords:
herbicide, barnyard grass, biotype, resistance, efficiencyAbstract
Formation of resistance by biotypes of weeds of the genus Echinochloa to the herbicide Nomini, SC in the rice fields of the Primorsky Krai. N.G. LUKACHEVA, A.V. KOSTYUK (Far Eastern Research Institute of Plant Protection, Kamen-Rybolov village, Primorsky Krai).
In Primorsky Territory in rice cultivation there is a problem escalation associated with often poor quality and uncontrolled use of herbicides and, consequently, the accumulation of resistant populations of barnyard grass to applied preparations.
The research was carried out in 2018–2020 in rice farms of the Primorsky Territory and on the experimental base of the Far Eastern Research Institute of Plant Protection using the method of B.A Dospekhov (1973), Yu.Ya. Spiridonov and others (2009). In the greenhouse conditions the rate of resistance accumulation to the Nomini herbicide by the biotype of 3 barnyard grass species seeded was determined. The seeds of these species were picked in the controlled farms. It has been proved that the barnyard grass has a fine resistance to the herbicide and develops in forms with previously developed stability to Facet herbicide.
