Resumen
- A biopesticide prototype based on a strain of Rhodotorula glutinis Lv316 that exhibit a high biocontrol activity against Botrytis cinerea was formulated as a concentrate suspension. A culture medium was developed to reach a yield of 6×109 cell/ml in batch fermenter for both 13-l. Two biopesticide prototypes were developed, one of them was supplemented with an optical brighteners which conferred a high UV-B protection (62%). Both presented high biocontrol activity since their efficacy ranged from 55 to 65% in a blackberry commercial crop, compared with 45 and 26% disease reduction using a chemical treatment difenoconazol and carbendazim, respectively.