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

• 作者: Amir A. Khoddamzadeh Bahar Fallahi Esmaeil Fallahi Shahla Mahdavi
• 来源期刊: 美国植物学期刊(英文)
• 学科: 数学
• 关键词: Bio-Regulator Crop Regulation Fruit Thinning Stone Fruit Regular Cropping Prunus persica
• 年，卷（期）: mgzwxqkyw_2020,（12）
• 页码范围: 1918-1933
• 页数: 16页
• 分类号: O17

摘要

<span>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</span><span style="font-family:;" "=""> </span><span style="font-family:;" "=""><span>(FO), and a mixture of calcium polysulfides and thiosulfate (lime sulfur) on fruit set and quality attributes in peaches (</span><i><span>Prunus</span></i><span> <i>persica</i></span><span>) </span><span>and nectarines (</span><i><span>P</span></i><span><span>. </span><i><span>persica</span></i></span><span> var. </span><i><span>nectarina</span></i><span>) were studied. All blossom thinners reduced fruit set in “Summer Lady” peach in both 2016 and 2017. Fruit sets in “Summer Lady” peach trees </span><span>with a double application of </span><span><span>Tergitol TMN-6 at the rate of 7.5 or 10 mL</span><span></span> <span>&#183;</span><span></span><span></span><span></span><span>L</span><span style="color:#4F4F4F;">&#175;</span><span></span></span>^{<span>1</span>}<span><span>, 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</span><span>&#183;</span><span>L</span><span style="color:#4F4F4F;">&#175;</span><span></span></span>^{<span>1</span>}<span><span> at 80% or 100% bloom. “Summer Lady” peach trees receiving FO at 20 mL</span><span>&#183;</span><span>L</span><span style="color:#4F4F4F;">&#175;</span><span></span></span>^{<span>1</span>}<span><span> plus lime sulfur at 25 mL</span><span style="color:#4F4F4F;">&#183;</span><span>L</span><span style="color:#4