ArticleScientific reports2025
Increased organic fertilizer significantly increases leaf nitrogen and phosphorus but not carbon content in a tropical tea plantation.
Article in Scientific reports, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Carbon (C), nitrogen (N), and phosphorus (P) are essential elements for plant growth and metabolism, with their stoichiometry playing a pivotal role in ecosystem functioning. In tea plantations, fertilization strongly influences the balance of these elements. However, the effects of organic fertilizers on the leaf C, N, and P contents and their stoichiometry in tropical tea plants remain poorly understood. In this study, we examined the impact of organic fertilizer on the leaf C, N, and P contents and their ratios of Camellia sinensis var. assamica (CSA) and Camellia sinensis var. sinensis (CSS) in Hainan, China. Our findings indicated that organic fertilizer significantly increased leaf N and P contents but had no effect on leaf C content. Additionally, organic fertilizer significantly decreased leaf C: N ratio of CSA and CSS, as well as leaf C: P ratio of CSA, but significantly increased leaf N: P ratio of CSS. Soil organic carbon (SOC), total N, and total P also increased, while their stoichiometric ratios decreased in CSA but not CSS. In the unfertilized tea plantation, leaf C, N, and P contents and their stoichiometry of CSA and CSS were significantly correlated with soil NO
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