Effects of Mineral Fertilizer Doses and Ratios on Tea Yield and Quality

Date Received: Oct 27, 2020

Date Published: Aug 10, 2021

DOI: https://doi.org/10.31817/vjas.2021.4.2.01

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Hoang, T., Thang, V., Thu, D., Binh, N., Toan, N., & Hoang, D. (2021). Effects of Mineral Fertilizer Doses and Ratios on Tea Yield and Quality. Vietnam Journal of Agricultural Sciences, 4(2), 997–1006. https://doi.org/10.31817/vjas.2021.4.2.01

Effects of Mineral Fertilizer Doses and Ratios on Tea Yield and Quality

Tran Xuan Hoang 1 , Vu Ngoc Thang 2 , Dang Van Thu 3 , Nguyen Ngoc Binh 1 , Nguyen Van Toan 3   , Dinh Thai Hoang (*) 2

  • Corresponding author: dthoangimp@gmail.com
  • 1 Tea Research and Development Center, Northern Mountainous Agriculture and Forestry Science Institute, Phu Tho 293823, Vietnam
  • 2 Faculty of Agronomy, Vietnam National University of Agriculture, Hanoi 131000, Vietnam
  • 3 Northern Mountainous Agriculture and Forestry Science Institute, Phu Tho 293823, Vietnam

    • Keywords

    Oolong tea, Sencha tea, mineral fertilizer, yield, quality

    Abstract


    Mineral nutrients are essential to plant growth and development. The present study aimed to evaluate the effects of mineral fertilizer doses and N:P:K ratio on growth, yield, and raw material quality of the tea variety PH10 to improve the production of high-quality tea products. The field experiment was conducted from 2015 to 2017. A two-factor experiment was designed by split-plot design with three replications. The mainplot treatments were three fertilizer doses of N  for one metric ton of fresh shoot products (30, 40, and 50 kg N ha-1). The subplot treatments were two NPK ratios (3:1:1 and 3:1:2). Plant height, leaf canopy, plant diameter, shoot yield parameters, shoot components, biochemical compounds, and sensory quality for Oolong and Sencha tea products were evaluated. The results showed that increasing fertilizer doses from 30 up to 40 kg N per ton of fresh product improved remarkably growth, yield, and tea quality of PH10 variety. Different fertilizer ratios resulted in variations in plant growth, the content of carbohydrate, sensory quality for taste and flavor as well as total sensory quality with higher values at NPK ratio of 3:1:2. Applying mineral fertilizer with an NPK ratio of 3:1:2 and 40kg N per ton of fresh shoot products was recommended to bring about the most benefits of tea yield and quality as well as economic profit.

    Author Biographies

    Tran Xuan Hoang, Tea Research and Development Center, Northern Mountainous Agriculture and Forestry Science Institute, Phu Tho 293823, Vietnam

    First author

    Vu Ngoc Thang, Faculty of Agronomy, Vietnam National University of Agriculture, Hanoi 131000, Vietnam

    Co-first author

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