Hostname: page-component-586b7cd67f-vdxz6 Total loading time: 0 Render date: 2024-11-22T05:47:05.106Z Has data issue: false hasContentIssue false
  • English
  • Français

Occurrence of the red spider, Oligonychus coffeae (Nietner), on tea in north-east India in relation to pruning and defoliation.

Published online by Cambridge University Press:  10 July 2009

G. M. Das
G. M. Das
Affiliation:
Senior Entomologist, Tocklai Experimental Station, Cinnamara, Assam.
Get access Rights & Permissions [Opens in a new window]

Extract

The red spider, Oligonychus coffeae (Niet.), persists in all stages of its development on a few old leaves and ‘ janams ’ (small leaves at the base of the shoot) of tea bushes during the cold weather, and this persisting population is primarily responsible for the attack in the spring.

In pruning, a great many of the old leaves (including janams) are removed from bushes, and, concomitantly, the red spider. Pruned tea is, therefore, less attacked than unpruned tea or ‘ skiffed ’ tea (where just a little is cut off the tops of the shoots) in which comparatively more leaves are left on bushes.

Type
Research Paper
Information
Bulletin of Entomological Research , Volume 51 , Issue 3 , November 1960 , pp. 415 - 426
Copyright
Copyright © Cambridge University Press 1960

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Andrews, E. A. (1928). Red spider.—Quart. J. Indian Tea Ass. 1928 pp. 206–219.Google Scholar
Comrie, L. C. (1939). Proceedings of the Third Annual Conference,Indian Tea Association, pp. 13–14.Google Scholar
Das, G. M. (1959a). Problems of pest control in tea.—Sci. & Cult. 24 pp. 493–498.Google Scholar
Das, G. M. (1959b). Bionomics of the tea red spider mite, Oligonychus coffeae (Nietner).—Bull. ent. Res. 50 pp. 265–274.CrossRefGoogle Scholar
Fleschner, C. A. (1958). Field approach to population studies of Tetranychid mites on Citrus and avocado in California.—Proc. 10th int. Congr. Ent. 2 pp. 669–674.Google Scholar
Harrison, C. J. (1937). The occurrence and treatment of red spider on tea in north east India.—Memor. Tocklai exp. Sta. Indian Tea Ass. no. 2, 26 pp.Google Scholar
Holloway, J. K., Henderson, C. F. & Mcburnie, H. V. (1942). Population increase of Citrus red mite associated with the use of sprays containing inert granular residues.—J. econ. Ent. 35 pp. 348–350.CrossRefGoogle Scholar
Watt, G. & Mann, H. H. (1903). The pests and blights of the tea plant.—2nd edn., 429 pp. Calcutta.Google Scholar
Woodford, E. K. (1947). Factors effecting the distribution and intensity of the attack of red spider (Tetranychus bioculatus W.M.) at Borbhetta in the spring of 1947.—Rep. Indian Tea Ass. Sci. Dep. 1947 appdx. 1Google Scholar