Postharvest biological control of blue mold of apple and brown rot of sweet cherry by natural saprophytic yeasts alone or in combination with low doses of fungicides.
Chand-Goyal, T. and Spotts, R. A.
Biological control Vol: 6 Issue: 2 Pages: 253-259.
1996
บทคัดย่อ
Six yeast strains isolated from the surface of pear fruits were evaluated for their ability to control post-harvest blue mold (caused by Penicillium expansum) on Golden Delicious apple fruits. All strains significantly reduced blue mold incidence and severity when applied simultaneously with the pathogen. Cryptococcus infirmo-miniatus strain YY6 and Cryptococcus laurentii strain HRA5 were the most effective, and populations in apple wounds increased approximately 1.2 log units within 10 days at 0 degrees C and approximately 1.4 log units in 2 days at 5, 10, or 20 degrees C. Control of blue mold by these two yeasts alone or in combination with a low dose of thiabendazole (15 microgram/ml) was tested at 5, 10, and 20 degrees C. Yeasts combined with thiabendazole controlled the disease significantly better at all temperatures (except at 10 degrees C during 1994) than the low dose of thiabendazole alone, and the control was comparable to that achieved using a commercially recommended high dose of thiabendazole (525 micrograms/ml). C. infirmo-miniatus controlled disease incidence better than C. laurentii at 5, 10, and 20 degrees C during 1993 and 1994. On sweet cherry, C. infirmo-miniatus or C. laurentii combined with a low dose (20 microgram/ml) of iprodione controlled brown rot caused by Monilinia fructicola as did a high dose (1175 microgram/ml) of iprodione.