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Effects of Organic Mulches on the Quality of "Niitaka" Pear Trees and Fruit  

Wu, Xiu-Yu (Chonnam National University, Department of Horticulture)
Kim, Wol-Soo (Chonnam National University, Department of Horticulture)
Choi, Hyun-Suk (Organic Agriculture Division, National Academy of Agricultural Science)
Jo, Jung-An (Chonnam National University, Department of Horticulture)
Publication Information
Food Science and Preservation / v.17, no.4, 2010 , pp. 466-470 More about this Journal
Abstract
We investigated the effects of organic mulches on the tree and fruit qualities of "Niitaka" (Pyrus pyriforia) pear trees. Trees grown with rice straw mulch had significantly greater potassium (K), magnesium (Mg), and calcium (Ca) concentrations in leaves compared with control trees and those mulched using bark or polyethylene, but the concentrations were below the recommended levels for these nutrients in pear leaves. Bark mulch increased fruit firmness and soluble solid (SS) levels, compared with rice straw mulch. The fruit of trees grown with bark mulch had a higher ratio of SS to total acidity in fresh fruit, and the fruit was dark red in color. The K and Ca concentrations were highest in fruit grown on trees mulched with rice straw and bark, respectively, and competition between the levels of these cations was evident in fresh fruit. Bark and rice straw mulches increased overall fruit quality, and reduced fruit stone size, whereas a polyethylene mulch, devoid of organic material, resulted in a fruit stone size similar to that of the control.
Keywords
organic mulch; pear; fruit quality; bark; rice straw; nutrient; stone cells;
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