Journal ArticleDOI
The red spider mite, Oligonychus coffeae (Acari: Tetranychidae): its status, biology, ecology and management in tea plantations
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This review collates the most important works carried out on biology, ecology and management of O. coffeae and discusses the scope of future studies for better management of this regular mite pest of tea.Abstract:
Oligonychus coffeae Nietner (Acari: Tetranychidae), the red spider mite (RSM), is a major pest of tea (Camellia sinensis) in most tea-producing countries. Nymphs and adults of RSM lacerate cells, producing minute characteristic reddish brown marks on the upper surface of mature leaves, which turn red in severe cases of infestation, resulting in crop loss. The pest is present on tea all the year round, although numbers vary depending on season. Their number increases as the weather warms up and decreases markedly once rains set in. Under optimal conditions there may be 22 overlapping generations in a year. Parthenogenesis is known to occur; consequently, all mite stages can be found at a given time. Their infestation is mainly confined to the upper surface of the mature leaves and could readily be identified by the bronzing of the leaf. There are several naturally occurring insect predators, such as coccinellid and staphylinid larvae, lacewing larvae, and mite predators, most importantly species of the families Phytoseiidae and Stigmaeidae. Integrated management has been adopted to control this mite pest, involving cultural, mechanical, physical, biological and chemical methods. This review collates the most important works carried out on biology, ecology and management of O. coffeae. Also the scope of future studies for better management of this regular mite pest of tea is discussed.read more
Citations
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Journal ArticleDOI
World crop pests (editor-in-chief W. Helle). Volumes 1A and 1B: Spider Mites: Their Biology, Natural Enemies and Control
Journal ArticleDOI
Use of plant extracts for tea pest management in India
Somnath Roy,Gautam Handique,Narayanannair Muraleedharan,Kavya Dashora,Sudipta Mukhopadhyay Roy,Ananda Mukhopadhyay,Azariah Babu +6 more
TL;DR: There is an increasing need of regulatory authority and national norms in India to facilitate the simplified and trade friendly registration procedures with quality assurance of the products, and the application of plant extracts with insecticidal properties provides an alternative to the synthetic pesticides.
Journal ArticleDOI
Impact of climate change on tea pest status in northeast India and effective plans for mitigation
Somnath Roy,Anoop Kumar Barooah,Kamruza Z. Ahmed,Rupanjali D. Baruah,Anjali Km. Prasad,Ananda Mukhopadhyay +5 more
TL;DR: The impact of climate change has already been observed across various tea growing regions in the form of vulnerability and unpredictability of precipitation, increasing trends in temperature and reduced rainfall events.
Book
Tea Environments and Plantation Culture: Imperial Disarray in Eastern India
TL;DR: Arnab Dey examines the intersecting role of law, ecology, and agronomy in shaping the history of tea and its plantations in British east India and suggests that looking afresh at the legal, environmental and agroeconomic aspects of tea production illuminate covert, expedient, and often illegal administrative and commercial dealings that had an immediate and long-term human and environmental impact on the region.
Journal ArticleDOI
Extremely low fecundity and highly female-biased sex ratio in nest-living spider mite Schizotetranychus brevisetosus (Acari: Tetranychidae)
Kaori Tamura,Katsura Ito +1 more
TL;DR: The demographic traits and the sex ratio of Schizotetranychus brevisetosus, which shows the WN life type and lives on the evergreen Japanese blue oak Quercus glauca, were investigated and the present results were similar to other WN species in that fecundity and male ratio were low.
References
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TL;DR: An introduction to the study of insects is presented, with some examples from the natural sciences, of birds, bees, and other insects that have been studied in detail.
BookDOI
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TL;DR: This timely volume provides an authoritative digest of all the available information on the mites (Acarina) known to produce injury to plants of economic importance.
Journal Article
Spider mites: their biology, natural enemies and control: vol. 1A
W. Helle,Maurice W. Sabelis +1 more
TL;DR: In this paper, the authors present a taxonomic and morphological analysis of the Tetranychidae and its relationships with other predaceous mites and spiders, as well as their relationship with host plant resistance and its manipulation through plant breeding.
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Spider mites: their biology, natural enemies and control
W. Helle,Maurice W. Sabelis +1 more
TL;DR: This chapter discusses the natural enemies of the Tetranychidae, host plant resistance and its Manipulation through Plant Breeding, and the case for genetic control of Spider Mites.
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Arthropod pest management in organic crops
TL;DR: The present work uses the four phases of the model to review the strategies in an agroecological context and provides a synthesis of the factors that influence the success of each phase.