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Branched Secondary Alcohol Ethoxylate, Ammonium Thiosulfate, Calcium Polysulfides-Thiosulfate, and Fish Oil Effects on Blossom Thinning, Fruit Set and Quality of Peaches and Nectarines

引用

American Journal of Plant Sciences 2020年第12期11卷 1918-1933页

作者： Esmaeil Fallahi Amir A. Khoddamzadeh Bahar Fallahi Shahla Mahdavi Parma Research and Extension Center Department of Plant Sciences University of Idaho Parma ID USA Department of Earth & Environment Institute of Environment Florida International University Miami FL USA

Total crop load has an inverse relationship with fruit size, while larger fruit size is often demanded by the peach and nectarine markets. Hand-thinning is extremely expensive, and thus, crop load adjustment, using blossom thinners is a crucial practice to ensure production of commercially acceptable fruit size and yield efficiency in stone fruit. In this study, the influence of branched secondary alcohol ethoxylate (Tergitol TMN-6) and/or ammonium thiosulfate (ATS), Crocker Fish Oil (FO), and a mixture of calcium polysulfides and thiosulfate (lime sulfur) on fruit set and quality attributes in peaches (Prunus persica) and nectarines (P. persica var. nectarina) were studied. All blossom thinners reduced fruit set in “Summer Lady” peach in both 2016 and 2017. Fruit sets in “Summer Lady” peach trees with a double application of Tergitol TMN-6 at the rate of 7.5 or 10 mL ·L¯1, each rate applied at 40% and 80% bloom, were lower than those receiving the same rates of this chemical only at 80% bloom, but they were similar to those receiving a single Tergitol TMN-6 spray at 15 mL·L¯1 at 80% or 100% bloom. “Summer Lady” peach trees receiving FO at 20 mL·L¯1 plus lime sulfur at 25 mL·

关键词： Bio-Regulator Crop Regulation Fruit Thinning Stone Fruit regular cropping Prunus persica

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