NEEM AS AN EFFECTIVE BIOCONTROL AGENT FOR TEA PESTS

茶叶科学 Pub Date : 2004-03-01 DOI:10.20425/IJTS.V3I1AND2.4603

S. Ramarethinam, S. Marimuthu, N. Murugesan

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引用次数: 2

Abstract

Plucking average, thereby, cost of harvesting of tea cannot be viewed in isolation as they are a product of multiple factors such as 'jat', age from pruning, height of bush and plucker, harvesting intervals and nutritional and health status of the bush. Use of mechanical implements, either hand-operated or motorized, if motorized, either held by one or two-men or self-propelled, contribute significantly to cost reduction in harvesting. However, choice of an appropriate implement to suit to the prevailing conditions in a region should be made carefully, lest the mechanization result in crop depression. Hand operated shears are currently in wide use without detriment to quality. The results with motorized, one or two-men held machines are varying, often leading to depression in quality and yield. They are in use in Japan, Russia, Argentina, Australia, Indonesia and Taiwan, but, in the importing countries they are proving uneconomic because of their high price and cost of maintenance; there is, thus, a need to develop machine(s) indigenously. The mounted, self-propelled machines are of limited application because of constraints in their manoeuvrability on gradients over 5°.

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印楝作为茶叶害虫的有效生物防治剂

因此，采摘的平均成本不能孤立地看待，因为它们是多种因素的产物，如'jat'，修剪的年龄，灌木和采摘器的高度，收获间隔以及灌木的营养和健康状况。使用机械工具，无论是手动的还是机动的，如果是机动的，由一个或两个人操作或自行驱动，大大有助于降低收割成本。但是，在选择适当的农具时应慎重考虑，以免机械化造成作物歉收。手动剪目前广泛使用，但不影响质量。一个人或两个人操作的电动机器的结果是不同的，经常导致质量和产量的下降。它们在日本、俄罗斯、阿根廷、澳大利亚、印度尼西亚和台湾使用，但在进口国，由于价格和维护成本高，它们被证明是不经济的;因此，有必要自主开发机器。由于其在坡度超过5°时的机动性受到限制，安装的自走式机器的应用受到限制。

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.