Atributos do solo e qualidade de frutos nos sistemas convencional e orgânico de produção de maçãs no Sul do Brasil1
作者： Cassandro Vidal Talamini do Amarante , Eliete de Fátima Ferreira da Rosa , Jackson Adriano Albuquerque , Osmar Klauberg Filho , Cristiano André Steffens
DOI: 10.1590/S1806-66902015000100012
关键词: Botany 、 Total organic carbon 、 Horticulture 、 Plant nutrition 、 Pulp (paper) 、 Dormancy 、 Chemistry 、 Postharvest 、 Nitisol 、 Crop yield 、 Cold storage
摘要: The present study aimed to evaluate the physical, chemical and biological characteristics of soil, mineral composition quality fruit, in orchards 'Royal Gala' apple, under conventional (CON) organic (ORG) production systems, a Haplic Nitisol. Under ORG, soil cultivation furrow showed better physical (higher values for aggregate stability, saturated hydraulic conductivity porosity, lower density), (lower acidity higher exchangeable Ca Mg, total carbon (TOC) nitrogen (TN)) microbial biomass (Cmic) ratio Cmic TOC), 0-20 cm layer compared CON. Because ORG system synthetic chemicals breaking dormancy were not used, commercial fruit harvesting took place one month after that CON system. Despite this difference time harvest, grown have, when harvested, starch-iodine index firmness soluble solid content, obtained fruits Fruit has percentage red skin coloration, but more severe russeting, relation During cold storage (four months at 0 ± 0.5 o C / 90-95% RH), show high loss pulp firmness, which may be associated with levels K Mg N skin, Therefore, even system, supply these elements too high, compromising preservation postharvest fruit.
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