Effects of Nitrogenous Fertilizer Rates, Plucking Intervals and Geographical Location of Production on Selected Micronutrient Levels of the Black Tea

茶叶科学 Pub Date : 2017-02-06 DOI:10.5376/JTSR.2017.07.0001

W. Omwoyo

引用次数: 0

Abstract

Micronutrients are important to both the human life and the tea plant. Camellia sinensis is widely grown in East Africa and its beverages are claimed to be the most widely consumed fluids after water. The changes in the levels of micronutrients with varied rates of nitrogenous fertilizer and plucking intervals three different locations were studied. All the studied micronutrients significantly (p≤0.05) varied with location of production. Mn and Se levels did not significantly (p≤0.05) change with an increase in nitrogenous fertilizer rates. Fe and Zn significantly (p≤0.05) increased with an increase in nitrogen fertilizer rates while Cu significantly (p≤0.05). The micronutrient content of the black teas did not significantly (p≤0.05) change with varied plucking intervals. There is need to strike a balance in the application of nitrogenous fertilizer rates in different locations in order to harmonize all the micronutrients. This research recommends 150 kg/ha/year of nitrogenous fertilizer rate that will strike a balance on all the studied micronutrients.

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氮肥用量、采采间隔和生产地理位置对红茶微量元素选择水平的影响

微量元素对人类和茶树都很重要。茶树在东非广泛种植，其饮料据称是仅次于水的最广泛消费的液体。研究了不同氮肥施用量和采采间隔对3个不同地点微量元素含量的影响。各微量元素含量随产地差异显著(p≤0.05)。Mn、Se水平随氮肥施用量的增加无显著变化(p≤0.05)。随着氮肥施用量的增加，铁和锌显著升高(p≤0.05)，铜显著升高(p≤0.05)。不同采期红茶中微量元素含量变化不显著(p≤0.05)。为了使所有微量元素协调一致，需要在不同地点的氮肥施用中取得平衡。本研究建议施用150公斤/公顷/年的氮肥，使所研究的所有微量元素达到平衡。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

茶叶科学

CiteScore

1.50

自引率

0.00%

发文量

2558

期刊介绍： The Journal of Tea Science was established in August 1964, approved by the Publicity Department, CCCPC. Its title was inscribed by Zhu De, the chairman of CCCPC. It was discontinued during the Cultural Revolution in 1966, and it was reissued in August 1984, approved by the State Scientific and Technological Commission.Academicians Chen Zongmao and Liu Zhonghuaof the Chinese Academy of Engineering served as the directors of the editorial board. The Journal of Tea Science is managed by the China Association for Science and Technology,sponsored by the China Tea Science Society and the Tea Research Institute of the Chinese Academy of Agricultural Sciences, and edited and published by the editorial office of the Journal of Tea Science. It is the only one of Chinese core journals in the field of tea science that is included in the core library of the Chinese Science Citation Database.Its Domestic Unified Serial Number is CN 33-1115/S, its International Standard Serial Number is ISSN 1000-369X and its International publication name code is CODEN-CHKEF4. At present, the Journal of Tea Science is a bimonthly publication, published in the middle of the month, with a book size of 16.