Application of low phosphorus on the basis of organic fertilizer can effectively improve yield and quality of tea plants

作者：Ying Wang, Rui Shi, Shuqin Deng, Haonan Wang, Sadam Hussain, Cong Wang, Chunmei Gong, Juan Bai · 发表于：Beverage Plant Research · 年份：2024 · DOI：10.48130/bpr-0024-0027 · 被引用次数：7 · 研究领域：Tea Polyphenols and Effects、Plant nutrient uptake and metabolism、Potato Plant Research

The availability of soil phosphorus (P) is essential for crop cultivation and production. However, agronomic P management for tea crops remains unexplored. Herein, the effect of different P management practices viz. unfertilized (control), organic fertilizer (OF) application, OF + N application at 300 kg/ha (N300) (OF-P1), OF + N300 + P application at 45 kg/ha (OF-P2), OF + N300 + P application at 90 kg/ha (OF-P3), and OF + N300 + P application at 135 kg/ha (OF-P4) on soil nutrient acquisition, enzymatic activities, and physio-biochemical, and quality traits of tea plants are investigated in yield. The results showed that OF-P2 treatment had significantly higher soil N (30.5%), P (42.2%), and potash (1.6%) concentrations above the control. P concentrations had a linear positive correlation with the activities of acid-phosphatase and phytase. OF-P2 had the greatest effects on plant growth, chlorophyll and carotenoid contents, and antioxidative enzyme activities than other treatments. OF-P2 treatment had a two-fold decrease in hydrogen peroxide and dioxygen (singlet) compared to the control. It was further found that OF-P2 significantly increased amino acid content by 33.5%, 40.1%, and 31.9%, and decreased polyphenol content by 42.3%, 45.6%, and 25.7% in bud, first, and second leaf, respectively, above the control. Overall, the present findings suggest that low P application (OF-P2) can increase nutrient availability, bud quality, and yield by improving soil enzymatic activitie...