Application of Dormant Oil to Peach Trees Modifies Bud-Twig Internal Atmosphere

in HortScience
View More View Less
  • 1 Department of Plant and Soil Science, The University of Tennessee, Knoxville, TN 37901

Treatments of single applications of 0%, 3%, 6%, 9%, or 12% dormant oil were sprayed on peach (Prunus persica L. Batsch) trees on 6 Feb. 1990. A repeat application of 6% oil plus 6% oil applied 6 days later was also made. Internal CO 2 concentrations of oil-treated buds and twigs were higher than the control the day after treatment and continued to be higher for 6 days. The second application of 10% oil prolonged the elevated CO2 concentration. Applications of 9% or 12% oil delayed flower bud development and bloom. The repeated application of 6% oil delayed bud development and bloom more than a single application of 6% oil. Damage to fruit buds increased as oil concentration increased, but repeated application of 6% oil resulted in less damage than a single application of 12% oil.

All Time Past Year Past 30 Days
Abstract Views 0 0 0
Full Text Views 124 25 0
PDF Downloads 138 56 3