ศูนย์นวัตกรรมเทคโนโลยีหลังการเก็บเกี่ยว

Biological method to combat pile rot.

Spichak, V. V.; Sapronov, N. M.; Borisenko, L. A.;

Sakharnaya Promyshlennost' Year: 1993 Issue: No. 3 Pages: 13

1993

บทคัดย่อ

Piling beet together with soil exposes the crop to many microorganisms of which some are phytopathogenic; >150 fungal species of have been found in rotten beet, the most harmful being the few that attack the live plant, e.g. Botrytis cinerea, Phoma betae [Pleospora betae], Sclerotinia intermedia and Fusarium culmorum. The possible environmental effect of chemicals often used for control has caused concern, and 3 years' study at RNIISP has resulted in a biological method using live cells of a bacterium harmless to humans and animals (Pseudomonas speciales?), supplied as a concentrate containing more than or equal to 8 x 109 spores/ml. At Kollektivist sugar factory in the Kursk region, beet was treated (or not) with a 0.5% suspension of the concentrate before storage for 47 days. After this period, 69.4% of the untreated beets were covered with mould, 73.3% had at least some rot, and 5.2% of the total mass was rotten; corresponding data for treated beet were 21.8, 38.3 and 2.51%. Treatment increased the residual sugar content from 16.5 to 17.0% and decreased the reducing content from 0.79 to 0.65%; the purity of normal juice increased from 77.7 to 80.35, and that of purified juice from 81.7 to 83.6.