INFLUENCE OF THE GROWTH REGULATOR ON PLANT PRODUCTIVITY AND CROP QUALITY IN TWO REMONTANT RASPBERRY VARIETIES IN SOUTH-EAST OF KAZAKHSTAN

Abstract

The influence of retardants on the dynamics of development, productivity, physiological and biochemical parameters of two varieties of remontant raspberries, Bryanskoe divo and Polka was studied. Retardant treatment was performed two times during the period of the most intensive shoot growth with a 20-day interval. Significant inhibition of growth processes has been established when subminimal doses are treated with Reglon contact herbicide. The inhibitory effect of the retardant Tse-Tse-Tse across the whole range of studied parameters was lower, but it did not cause the expected activation of generative processes. The optimal parameters of the bushes and the optimization of physiological generative processes were noted when using the Sprayfert - Biostim combination containing, along with water-soluble and highly assimilable nitrogen, phosphorus and potassium substances with a hormonal-gibberrelin effect. An acceleration of the onset of ripening by 7 days and an increase in yield by 12% were achieved.