The influence of fungicide treatment in the orchard on apple fruit preservation during a long term storage in a refrigerating chamber
The study results of fungicide treatment effect in the orchard 20 days before harvest with fungicides Bellis, Delan, Merpan to natural loss of apple fruits mass, physiological alterations and the development of microbiological diseases during the storage period in refrigerating chamber of fruit storage of Brest regional agricultural experimental station of the National Academy of Science of Belarus are presented in the article. As the object of study late-ripening apple varieties Belorusskoye Sladkoye, Darunak, Imant were used. Variants of treatments: integrated protection - basic treatment (control), basic treatment + Bellis, basic treatment +Delan, basic treatment + Merpan. Finishing treatments with Bellis, Delan, Merpan were done of 2 of September of 2014 and 24 of August of 2015. As the result of the study were established that the treatment with preparation Delan contribute to reduce the percentage of natural fruit mass loss during the storage, Belorusskoye Sladkoye cultivar decreases from 12,5% (control) to 10,0%, Imant from 8,3% (control) to 5,7%. The additional treatment with preparation Delan decreased provenly physiological alterations of fruits of Belorusskoye Sladkoye cultivar up to 2,2% in compared with control 5,6%, Delan and Merpan on Darunak cultivar up to 0,5% and 0,4% compared with control, Bellis, Delan and Merpan on Imant cultivar up to 1,9%, 2,1%, 1,5% respectively, with 5,4% in control. The treatment with preparations Bellis, Delan and Merpan gave proven decrease of losses from microbiological deseases on Belorusskoye Sladkoye cultivar fruits.