Effect of plant sanitation on marketable yield and Botrytis fruit rot of strawberry.
J. C. MERTELY, C. K. Chandler, K. C. Burke, and D. E. Legard.
Phytopathology 89:S52. (suppl.)
1999
บทคัดย่อ
Effect of plant sanitation on marketable yield and Botrytis fruit rot of strawberry.
Replicated field trials were conducted to evaluate the effects of strawberry plant sanitation on marketable yield and fruit rot caused by Botrytis cinerea in Florida. Sanitation was compared to chemical control (e.g., a conventional weekly captan program plus four iprodione bloom sprays) and combined sanitation/fungicide treatments. In 1995-1996, the incidence of Botrytis fruit rot (BFR) was significantly higher in the sanitation treatment, but yield was not reduced. In 1996-1997, yields in the fungicide treatments (22,000-25,400 kg/ha) were significantly higher than in foliar, fruit, or combined sanitation treatments (18,800-19,500 kg/ha), and BFR incidence was significantly lower (2.8-3.8% compared to 8.2-11.0%). Results from the ongoing 1998-1999 experiment appear similar to 1996-1997. In these experiments, sanitation alone was inferior to fungicides and ineffective in controlling BFR. Supplementing fungicides with sanitation did not improve disease control or increase yield under Florida conditions.