Lipton’s Tea Plantations in India: Is There a Gap Between Saying and Doing in Sustainability?

2019 ◽  
pp. 127-140
Author(s):  
Gwen van Driel
Keyword(s):  
Tea Plantations

Greater nitrous and nitric oxide emissions from the soil between rows than under the canopy in subtropical tea plantations

Geoderma ◽  
2021 ◽  
Vol 398 ◽  
pp. 115105
Author(s):  
Zhaoqiang Han ◽  
Jinyang Wang ◽  
Pinshang Xu ◽  
Zhirong Sun ◽  
Cheng Ji ◽  
...  
Keyword(s):  
Nitric Oxide ◽  
Tea Plantations ◽  
Nitric Oxide Emissions

scholarly journals Fear of Small Numbers and Political Behaviour of Ethnocentric Majority of Sri Lanka: Undeclared War against Upcountry Tamil Females

2021 ◽  
Vol 4 (1) ◽  
pp. 120-125
Author(s):  
Harsha Senanayake
Keyword(s):  
Sri Lanka ◽  
International System ◽  
Labour Force ◽  
Social Process ◽  
Normative Values ◽  
Political Behaviour ◽  
Tea Plantations ◽  
Gender Hierarchies ◽  
Gender Based ◽  
Legal Frameworks

Abstract The United Nations Human Development Report (UNHDR) mentions that the rights of women and female children are inalienable, integral and indivisible. It further highlights the full and equal participation of women in every segment of the social process without any discrimination or without considering sex - gender hierarchies.1 The legal frameworks of the international system and local political space is accepting of the normative values of gender equality and the eradication of gender-based discrimination. But most of the majoritarian societies challenge these legal frameworks to address their political, social and market-oriented interests. These actions are driven by political, social and structural frameworks which have been accepted by the majoritarian societies in the liberal democratic world. Tamil women in upcountry tea plantations in Sri Lanka were subjected to systemic and structural violence because of Sinhala majoritarian statecrafts in post-independence Sri Lanka. The ethnocentric violence directly problematises human security, survival and the personal rights of the upcountry Tamil female labour force. This paper discusses the survival of Tamil female plantation labour forces, focusing mainly on the security crisis of female reproductive rights under the ethnocentric Sinhala Majoritarian Society.

scholarly journals Protected Geographical Indication Identification of a Chinese Green Tea (Anji-White) by Near-Infrared Spectroscopy and Chemometric Class Modeling Techniques

2013 ◽  
Vol 2013 ◽  
pp. 1-8 ◽  
Author(s):  
Lu Xu ◽  
Peng-Tao Shi ◽  
Xian-Shu Fu ◽  
Hai-Feng Cui ◽  
Zi-Hong Ye ◽  
...  
Keyword(s):  
Green Tea ◽  
Near Infrared ◽  
Nir Spectroscopy ◽  
Rapid Identification ◽  
Classification Performance ◽  
Chinese Market ◽  
White Tea ◽  
Modeling Techniques ◽  
Tea Plantations ◽  
Model Training

This paper reports a rapid identification method for a Chinese green tea with PGI, Anji-white tea, by class modeling techniques and NIR spectroscopy. 167 real and representative Anji-white tea samples were collected from 8 tea plantations in their original producing areas for model training. Another 81 non-Anji-white tea samples of similar appearance were collected from 7 important tea producing areas and used for validation of model specificity. Diffuse NIR spectra were measured with finely ground tea powders. OCPLS and SIMCA were used to describe the distribution of representative Anji-white tea objects and predict the authenticity of new objects. For data preprocessing, smoothing, derivatives, and SNV were applied to improve the raw spectra and classification performance. It is demonstrated that taking derivatives and SNV can improve classification accuracy and reduce the complexity of class models by removing spectral background and baseline. For the best models, the sensitivity and specificity were 0.886 and 0.951 for OCPLS, 0.886 and 0.938 for SIMCA with SNV spectra, respectively. Although it is difficult to perform an exhaustive analysis of all types of potential false objects, the proposed method can detect most of the important non-Anji-white teas in the Chinese market.

scholarly journals Identifying the Biological Characteristics Associated with Oviposition Behavior of Tea Leafhopper Empoasca onukii Matsuda Using the Blue Light Detection Method

Insects ◽  
2020 ◽  
Vol 11 (10) ◽  
pp. 707
Author(s):  
Qi Yao ◽  
Huining Zhang ◽  
Long Jiao ◽  
Xiaoming Cai ◽  
Manqun Wang ◽  
...  
Keyword(s):  
Blue Light ◽  
Detection Method ◽  
Oviposition Behavior ◽  
Egg Laying ◽  
Biological Characteristics ◽  
Light Detection ◽  
Tea Plantations ◽  
Egg Density ◽  
Theoretical Evidence ◽  
Proven Method

Tea leafhopper (Empoasca onukii Matsuda) is amongst the key pests in tea plantations around the East Asian region. Stereomicroscopy is a conventional method used for detecting tea leafhopper eggs by dissecting the tender tissues. However, there is a need for a faster and more efficient method to directly observe and investigate intact eggs within tea shoots. The absence of a proven method limits research efforts for determining the oviposition behavior of E. onukii. Herein, we applied the blue light detection method (BLDM), a technique recently developed for other species, in order to detect E. onukii eggs directly and non-destructively within the tender shoot. In addition, we compared BLDM against the traditional stereomicroscope detection method (SMDM) for four tea cultivars. Notably, our results revealed that BLDM was precise and effective in measuring the egg laying quantity of E. onukii on intact tea shoots. Neither tea cultivars nor egg density in the tender shoot significantly affected the accuracy of BLDM. Furthermore, biological characteristics that have rarely been reported previously for E. onukii were investigated using the BLDM, including zygote duration, ovipositional rhythm, egg distribution within the tender shoot, and in different leaf positions, numbers of eggs laid by a single female daily, and laid by the entire generation. Therefore, these findings provide insights into the basic and theoretical evidence for the strategy and mechanism associated with the oviposition behavior of E. onukii.

Cover Crops Enhance Natural Enemies While Help Suppressing Pests in a Tea Plantation

2019 ◽  
Vol 112 (4) ◽  
pp. 348-355 ◽  
Author(s):  
Li-Lin Chen ◽  
Pei Yuan ◽  
Min-Sheng You ◽  
Gabor Pozsgai ◽  
Xu Ma ◽  
...  
Keyword(s):  
Species Richness ◽  
Cover Crops ◽  
Beneficial Arthropods ◽  
Vigna Sinensis ◽  
Free Products ◽  
Tea Plantation ◽  
Tea Plantations ◽  
Trifolium Repens L ◽  
Arthropod Biodiversity ◽  
Sustainable Pest Control

Abstract Tea is an economically important crop, consumed by billions of people. Despite the increasing market for pesticide-free products, the use of pesticide in tea is still high. In order to investigate whether intercropping promotes biological control organisms, Chamaecrista rotundifolia (Pers.) Greene, Indigofera hendecaphylla Jacq., Trifolium repens L., and Vigna sinensis (L.) were separately intercropped with free weeding as control in a tea plantation at Yangli, China. Arthropods were collected by taking sweep-net samples, and treatment effects on assemblages were investigated. The combined species richness of all arthropods and that of parasitoids was significantly increased in intercropped treatments while the species richness of herbivores and predators was only greater in C. rotundifolia and I. hendecaphylla intercropped treatments. Compared with control, the combined abundance of all arthropods, and that of herbivores was lower, while the abundance of parasitoids and its taxa was greater in all intercropped treatments. The abundance of predators and its taxa was greater only in tea plantations intercropped with C. rotundifolia or I. hendecaphylla. Of the herbivores, the abundance of Empoasca onukii Matsuda, Sternorrhyncha, Aleyrodidae, and Pentatomidae was greater in the areas intercropped with C. rotundifolia in comparison with the control, but the abundance of Thysanoptera and Geometridae caterpillars was lower. The recorded increase in the abundance of beneficial arthropods may explain the lower abundance of Thysanoptera or Geometridae caterpillars detected in the intercropped tea plantations. Our results indicate that intercropping has the potential to enhance arthropod biodiversity, and to provide an option for sustainable pest control in tea plantations.

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