Dissolution of Coated Urea Fertilizer and Absorption of Tea Plants in Tea Field Soil

Shiwa, Masakazu; Yoshizawa, Kiyoo; Ito, Masatomo

doi:10.5979/cha.2000.31

Cited by 3 publications

(1 citation statement)

References 7 publications

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“…Both types of coated fertilisers are used in golf courses, nurseries, lawns, and in landscaping in the US, Canada and Europe, and also in growing vegetables, rice and fruits in Japan 18. However, little work has been done on the application of slow release fertilisers in tea fields and their effects on the yield and quality of tea 20, 21…”

Section: Introductionmentioning

confidence: 99%

Nitrogen release dynamics and transformation of slow release fertiliser products and their effects on tea yield and quality

Wang

Shi

et al. 2008

J Sci Food Agric

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Section: Introductionmentioning

confidence: 99%

Nitrogen release dynamics and transformation of slow release fertiliser products and their effects on tea yield and quality

Wang

Shi

et al. 2008

J Sci Food Agric

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Kinki, Chugoku, and Shikoku Regions

Yanai

Toma

Mochizuki

et al. 2021

World Soils Book Series

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Effect of controlled-release fertilizer on N2O emissions and tea yield from a tea field in subtropical central China

et al. 2018

Environ Sci Pollut Res

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Tea (Camellia sinensis L.), a perennial leaf-harvested crop, favors warm/humid climate and acidic/well-drained soils, and demands high nitrogen (N) fertilizer inputs which lead to significant emissions of NO. Potential mitigation options should be adopted to improve N use efficiency (NUE) and reduce environmental pollution in tea field system. A 3-year field experiment was carried out in a tea field in southern China from January 2014 to December 2016 to investigate the effect of controlled-release fertilizer (CRF) application on NO emissions in tea field system. Three practices, namely conventional treatment (CON, 105 kg N-oilcake ha year + 345 kg N-urea ha year), treatment with a half amount of the N fertilizer (CRF50%, 105 kg N-oilcake ha year + 120 kg N CRF ha year) and full amount of N fertilizer (CRF100%, 105 kg N-oilcake ha year + 345 kg N CRF ha year) were used. Compared with the CON, our results showed that CRF50% reduced the NO emissions by 26.2% (p > 0.05) and increased the tea yield by 31.3% (p > 0.05), while CRF100% significantly increased the NO emissions by 96.7% (p < 0.05) and decreased the tea yield by 6.77% (p > 0.05). Overall, yield-scaled NO emissions of tea were reduced by 44.5% (p > 0.05) under CRF50% and significantly increased by 100% (p < 0.05) under CRF100%, compared with CON. Based on the gross margin analysis, CRF50% obtained the highest net economic profit. Our findings suggest that reducing N input of CRF (CRF50%) is necessary and feasible for adoption in the current tea plantation system.

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Dissolution of Coated Urea Fertilizer and Absorption of Tea Plants in Tea Field Soil

Cited by 3 publications

References 7 publications

Nitrogen release dynamics and transformation of slow release fertiliser products and their effects on tea yield and quality

Nitrogen release dynamics and transformation of slow release fertiliser products and their effects on tea yield and quality

Kinki, Chugoku, and Shikoku Regions

Effect of controlled-release fertilizer on N2O emissions and tea yield from a tea field in subtropical central China

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