Nonspecific induced resistance of peach to fruit rots and curve of leaves

Abstract

When using immuno inductors, albite, immunocytophyte, and ecogel on some peach varieties (Collins, Redhaven, Veteran) increase its resistance to curliness (Taphrina deformans (Berk.) Tul.), Monilia (Monilia cinerea Bonord.), and grey rot of fruit (Monilia cinerea Bonord.). The use of albite and ecogel resulted in an increase in the resistance of the peach to leaf curl, regardless of the varietal characteristics. The lowest degree of curl development was observed on the Redhaven variety. Biological efficacy in the use of albite and ecogel in pure form and in tank mixtures with fungicides was at a high level, regardless of the variety being studied. As a result of the activation of plant defense reactions to the elicitor exposure of immunoinductors. An analysis of the resistance of varieties to fruit rot showed that Redhaven had the lowest susceptibility to moniliosis. The degree of development of gray rot of fruit on the Redhaven variety was lower than that of the Veteran variety. There were no significant differences in the degree of development of the disease in peach varieties Veteran and Collins. All the tested preparations were distinguished by a high inducing activity contributing to an increase in the resistance of the studied peach varieties. Among the immunoinductors, albite and ecogel were the most effective in pure form and in a tank mixture with fungicides. The values of biological effectiveness in the fight against curliness and fruit rot, as compared with the control, are manifested with the use of albite and ecogel both in pure form and with fungicides.