THE EFFECT OF FIVE PREPLANT TREATMENTS ON THE EARLY PERFORMANCE OF PEACH ON A REPLANT SITE

in HortScience
Authors:
Curt R. RomDepartment of Horticulture, University of Arkansas, Fayetteville, AR 72701

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B. BlackburnDepartment of Horticulture, University of Arkansas, Fayetteville, AR 72701

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R. BourneDepartment of Horticulture, University of Arkansas, Fayetteville, AR 72701

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The growth and productivity of `Redhaven'/Lovell peach during the first 3 years in a replant site was evaluated after planting in one of five preplant treatments. Treatments (trt) were 1) nontreated control (CK), 2) killed fescue (F), 3) soybean rotation (L), 4) summer solarization (SOL), and 5) methyl bromide fumigation (FUM). An orchard was removed from the experimental site in Spring 1991 before establishments of treatments. In June 1991, a tall fescue (K-31), soybeans, or mustard, and cabbage were sown in trt plots 2, 3, and 4, respectively. In July, trt 4 was covered with clear, 4-mil plastic sheeting for 90 days. In October, trt 5 was fumigated with methyl bromide under a 4-mil plastic sheet. Trees were planted in Spring 1992. Soil characteristics, weed populations, and tree growth and productivity were measured in the first three seasons after planting. FUM significantly reduced weed density into the third season. SOL plots had the highest weed density in years 2 and 3. TCSA, yield, and yield efficiency of FUM trees were significantly larger than CK. Trees in F or SOL had significantly lower yields.

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