COMPOSITION DISEASE AND SURVEY ON THE EFFECTIVENESS OF SOME BIOLOGICAL PRODUCTS IN CONTROL OF SOME MAJOR DISEASE ON Aloe vera IN BINH THUAN PROVINCE

Abstract

Aloe vera is a crop that, in addition to its value in pharmaceutical technology and cosmetics, is also a crop with high economic value and is expanding its area in Binh Thuan province. In the production of Aloe vera in Binh Thuan province, many types of diseases appear and cause great harm to the productivity and quality of Aloe vera. Through investigation, it is shown that there are 6 main diseases; of which, 3 diseases including soft rot (E. cloacae), leaf spot (Alternaria alternata) and leaf tip blight (Curvularia hawaiiensis) appear commonly and cause serious harm in Aloe vera fields in Binh Thuan province, with the highest damage rate of 38.0% for soft rot and leaf tip blight, 40% for leaf spot. Testing 5 types of biological products (Agri Life 100 SL, Map Lotus 125 WP, Javimin 20 SL, Curenox OC85 WP, Starner 20 WP) to prevent bacteria causing soft rot and 5 types of biological products (PyLo T01, BIONITE WP, CNX - CN, Mocabi SL, Nanobacplasma) to prevent fungi causing leaf spot and leaf tip blight. The results showed that Javimin 20SL was most effective in controlling soft rot with a disease rate of 7.8% after the first treatment 5 days and maintained up to 15 days after the second spray of 11.1%. Mocabi SL was most effective in controlling leaf spot disease with a disease rate and disease index after the first treatment 7 days of 11.3% and 2.7% and maintained up to 21 days after the second spray of 28.2% and 5.7%. Meanwhile, CNX - CN had a disease rate and disease index after the first treatment 7 days of 11.0% and 3.7% maintained up to 21 days after the second spray of 36.0% and 5.1%, lower than other formulas.