This article is part of the Woodleaf Farm Organic Systems Description.
Figure 1. Materials applied to control brown rot: percent marketable fruit at harvest (O'Henry peaches, 1993): Ten materials were tested. Each material was applied three times per week at bloom and four times per week prior to harvest with an air blast sprayer (except for copper, sulfur, and yeast). Copper hydroxide was applied once just prior to bloom (15 lb/acre). Sulfur was applied three times during bloom and three times in June following three rainfall events (15 lb/acre). The copper and sulfur schedule was Woodleaf’s standard spray program in the 1990s. Yeast was sprayed three times during bloom. Applications were made on 15 contiguous (non-randomized) trees per treatment for a total of 150 trees. All fruit from each treatment was harvested and evaluated as a composite rather than by individual trees. For these reasons, statistical analysis was not possible.
*Materials: applied in 250 gals/acre water with a Rears air-blast sprayer. Material rates are given per acre. Each material is added to the tank of 250 gallons of water and sprayed on 1 acre.
Some of these materials are no longer available. For a list of foliar spray materials Woodleaf now uses see Table 3.
Figure 2. Materials applied to control brown rot: percent marketable fruit at harvest (Royal Glo peaches, 1994): Three random experimental trees each were treated with one of three materials, a mix of the three materials, or sulfur (Woodleaf’s standard practice) using the hand gun on an air-blast sprayer. An unsprayed buffer tree was left between each sprayed tree. Test trees were sprayed four times during bloom and four times at weekly intervals before harvest. Due to the small sample size and variation among replicates, there was no statistical difference in brown rot incidence among treatments.
*Materials (in order of most marketable fruit produced) applied using a hand gun in 250 gal/acre water with a Rears air-blast sprayer:
Some of these materials are no longer available. For a list of foliar spray materials Woodleaf now uses see Table 3.
These figures are part of the Woodleaf Farm Organic Systems Description
Table of Contents:
This is an eOrganic article and was reviewed for compliance with National Organic Program regulations by members of the eOrganic community. Always check with your organic certification agency before adopting new practices or using new materials. For more information, refer to eOrganic's articles on organic certification.
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