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Enhancement of Efficacy in Controlling Postharvest Decays and Extending Shelf Life of Mangoes by Combined Pre- and Postharvest Chemical Applications

文献类型： 外文期刊

作者： Huang, Siliang 1 ; Zhu, Guining 1 ; Qin, Liping 1 ; Zhou, Xiangyang; Huang, Fuxin 1 ; Li, Quanfu; Yan, Weihong 1 ;

作者机构： 1.Guangxi Acad Agr Sci, Nanning 530007, Peoples R China; Nanyang Normal Univ, Coll Life Sci & Technol, Nanyang 473061, Peoples R China

2.Guangxi Acad Agr Sci, Nanning 530007, Peoples R China; Nanyang Normal Univ, Coll Life

关键词： Chemical application;Disease management;Mango;Postharvest decay;Storage life

期刊名称：INTERNATIONAL JOURNAL OF AGRICULTURE AND BIOLOGY （ 影响因子：0.822； 五年影响因子：0.906 ）

ISSN： 1560-8530

年卷期： 2012 年 14 卷 2 期

页码：

收录情况： SCI

摘要： To maximize the control of postharvest diseases and extend the shelf life of mangoes, pre-harvest chemical applications in combination with postharvest ones were performed in 2007 in Tianyang County, Guangxi, China. In a small-plot field trial, three fungicide combinations of azoxystrobin (125-250 mg L-1) plus mancozeb (1000 mg L-1) were periodically sprayed on two 10-years-old mango cultivars from initial blooming g until harvest. CaCl2 was a added to the fungicide mixtures at a concentration of 0.6% (w/v) from fruit set and development. Spray interval from panicle emergence to fruit set was 10 days, while from fruit set to maturity was 15 days. At commercial maturity, m mangoes were h harvested and drenched in a prochloraz (450 mg L-1) solution for 10 min and packaged in a cartoon box with ethylene absorbent bags. After 23 or 25 days of storage (29+/-3 degrees C & 70-85% RH), the percentage of sound fruit and decay-controlled efficacy on two cultivars with both pre- and postharvest chemical applications were significantly higher than those fruit only with pre- or postharvest treatments. FC-3 (125 mg L-1 azoxystrobin plus 1000 mg L-1 mancozeb) was the best pre-harvest fungicide combination, in which the azoxystrobin was at a lower concentration than the other combinations.. In a separate demonstration field trial, in which the fungicide combination (167 mg L-1 azoxystrobin plus 1000 mg L-1 m mancozeb) was applied before e harvest, the enhanced efficacies in controlling postharvest decays and extending shelf life of mangoes by combining the pre-harvest chemical applications with the postharvest ones were also confirmed. Three types of diseases (anthracnose, stem end rot & aspergillus rot) were mainly responsible for the rotted mangoes during storage. Colletotrichum gloeosporioides was identified as the causal agent of the anthracnose. The three pathogens (Botryodiplodia theobromae, Dothiorella dominicana & Phomopsis mangiferae) were associated with the stem end rot, while the other three (Aspergillusoryza var. oryzae, A. niger & A. japonicas var. aculeatus) with the aspergillus rot. (C) 2012 Friends Science e Publishers

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