Assessment of Agrocenosis Adaptability of Winter Wheat in the Conditions of the Foothill Zone of the Central Caucasus

This paper presents the results of multi-year research on adaptability winter wheat varieties to conditions foothill zone Central Caucasus. Characteristics such as ductility and stability were used assess for conformity cultivation conditions. Plant homeostaticity served indicator ontogenetic adaptability. Phenological observations reports carried out according state variety testing methodology. The species composition weed vegetation was established using Agroecological Atlas Russia. Conventional insect accounting methods consider phytophages plants damaged by them. It that dominant pests grains in early periods include phytophage bugs cereal leaf beetle Oulema melanopus L. maximum number noted during earing-flowering period. proportion pathogens spike Fusarium head blight, tan spot Septoria prevailed pathogenic complex. In total, 36.7% varieties, including Kuma, Deya, Esaul, Starshina, Delta, Nota Antonina, medium-resistant blight damage. According a comprehensive assessment selection parameters adaptability, productivity resistance diseases, highly plastic genotypes responsive environmental factors distinguished: Veda, Tanya, List 25 (bi = 2.2; 2,3; 2,1). based adaptive properties wheat. decreased 20.8% mixed Batko+Deya, yield crops increased 9%. Methods compiling designing mosaics area grain agrocenosis are recommended.
 Keywords: wheat, sustainability agrocenosis, productivity, ecological plasticity,