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Eco-Physiological Responses of Black Chokeberries as Affected by Applications of Oil Cake

Author

Listed:
  • Hyun-Sug Choi

    (Department of Horticulture, Daegu Catholic University, Gyeongsan-si, Gyeongbuk 38430, Korea)

Abstract

This study was carried out to examine the optimum amount of oil cake necessary for the desired nutritional status of “Nero” black chokeberry ( Aronia melanocarpa (Michx.) Elliot) in an experimental field plot between the years 2018 and 2019. The treatments included 0% (0.0 kg/ha), 25% (4.4 kg/ha), 50% (8.8 kg/ha), 75% (13.1 kg/ha), and 100% (17.5 kg/ha) of a recommended amount of oil cake. The pH in the plots with 8.8, 13.1, and 17.5 kg per ha applied ranged between 7.0 and 7.3, and these values were lower than the values observed on the plots with 0.0 and 4.4 kg per ha applied at the end of July in the years 2018 and 2019, with the concentrations of soil NO 3 -N and NH 4 -N remaining low in the off-season. The foliar concentration of total-nitrogen (T-N) was higher for the plants treated with all the oil cake treatments in 2018 and with the oil cake of 17.5 kg/ha in 2019 compared to that of 0.0 kg/ha. The foliar soil plant analysis development values for June and August increased on the bushes treated with 13.1 and 17.5 kg per ha in both the years of 2018 and 2019. The cane diameter, canopy width, and total dry weight were significantly increased by bushes treated with 8.8, 13.1, and 17.5 kg per ha in both years. The fruit yield, harvest index, and percentage of T-N partitioning into fruit were maximized by the treatment with 13.1 kg per ha. An amount of 75% of the recommend application for young black chokeberry may be the prominent application rate in terms of maximized fruit productivity while balancing with the demands of vegetative growth in order to reset the recommended amount of fertilizer.

Suggested Citation

  • Hyun-Sug Choi, 2020. "Eco-Physiological Responses of Black Chokeberries as Affected by Applications of Oil Cake," Sustainability, MDPI, vol. 12(18), pages 1-10, September.
    • Handle: RePEc:gam:jsusta:v:12:y:2020:i:18:p:7601-:d:413887
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