4.7 Article

Plant Performance and Soil Microbial Responses to Irrigation Management: A Novel Study in a Calafate Orchard

期刊

HORTICULTURAE
卷 8, 期 12, 页码 -

出版社

MDPI
DOI: 10.3390/horticulturae8121138

关键词

berberis; soil enzyme activity; polyphenols; anthocyanins; antioxidant capacity

资金

  1. Universidad Adventista de Chile, Chile
  2. Comision Nacional de Investigacion Cientifica y Tecnologica (CONICYT, Chile) scholarship [98, 106]
  3. [21201481/2020]

向作者/读者索取更多资源

Irrigation at 50% ET0 can increase fruit yield and maintain fruit quality while optimizing water resources in commercial calafate orchards.
Calafate fruits have a high content of phenolic compounds and an antioxidant activity up to four times higher than that of blueberries. The establishment of a calafate orchard and irrigation responses on fruit and soil characteristics have been scarcely studied. Therefore, the objective of this study was to evaluate the effect of water replenishment rate: 0%, 50%, 100% and 150% of reference evapotranspiration (ET0), on soil microbiological activity, plant physiological response, fruit yield and chemical composition in a calafate orchard. The results showed that irrigation at 50% ET0 presented significant increases in soil urease, dehydrogenase and acid phosphatase activity. Likewise, irrigation at 50% ET0 significantly increased stomatal conductance and plant chlorophyll index, which led to a significant increase in fruit yield being 60% higher compared to the other treatments. Despite the higher fruit yield, 50% ET0 irrigation had a similar level of total anthocyanins and ORAC antioxidant capacity as the 100% ET0 treatment. In contrast, 0% and 150% ET0 treatments showed a higher degree of stress and got higher values for total anthocyanins and fruit antioxidant capacity. Irrigation rates 50% ET0 increases fruit yield while maintaining fruit quality and optimizing water resources in commercial orchards of calafate.

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