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Title: | Survey on incidence of pink disease in Nedumangad taluk of Trivandrum district |
Authors: | Nazeem, P A Paribalan, P |
Keywords: | Plantation Crops and Spices |
Issue Date: | 1992 |
Publisher: | Department of Plantation Crops and Spices, College of Horticulture, Vellanikkara |
Citation: | 170968 |
Abstract: | The survey was conducted in Nedumangad taluk of Trivandrum district with an intention to assess the extent of pink disease incidence in rubber holdings extending upto 5 hectares in area. The results obtained revealed that the pink disease caused by Corticium salmonicolor (Berk. & Br.) is prevalent in all the 28 villages of Nedumangad taluk at varying intensities (1. 22 to 20.83%). RRII 105 and RRIM 600 were the popular clones occupying the rubber growing tracts of Nedumangad taluk. Among these clones, the intensity and severity of the disease incidence was more for RRIM 600. It was also observed that the plants of the age group 5 to 12 years were more prone to the disease than the younger and older ones. The rubber growers of Nedumangad taluk were found to be aware of the symptoms and, management practices for the disease. More than 85 per cent of the farmers had average or better knowledge about the disease. They were found inspecting the plants regularly for the disease incidence except for the few, who left the plants undetected and untreated at the early stages of infection. In the surveyed area the disease infection was found more near the first fork region in both the clones studied. The farmers were found to adopt surgical procedures and chemical treatment for the control of the disease. Bordeaux paste was found more popular among the growers than thiride, whereas calixin was not at all used in Nedumangad. Efforts are to be taken to popularise the use of calix in and thiride among the farmers. Recovery from the disease was substantially good in the surveyed area. Early detection and proper management could completely control the disease to an extent of 96 per cent. The clone RRII 105 showed better recovery than RRIM 600. The survey also revealed the relative efficiency of the various extension tools employed by the Rubber Board. Discussion with extension officers was found to contribute the maximum in disseminat- ing the knowledge about the disease. The farmers were also found to rely upon the view of other growers indicating the control measure to be adopted. The details collected during the survey necessitates the need for further strengthening of the extension work operated by the Rubber Board. The farmers preferred direct field visit and discussion rather than conducting large scale seminars. The urgent need for popularising of printing media like rubber magazine among the farmers was also felt during the study. To conclude, increased number of visit by the extension officers of the Rubber Board and group discussions will help in . disseminating the knowledge about the disease and help early detection and treatment of pink disease of rubber in Nedumangad taluk of Trivandrum district . |
URI: | http://hdl.handle.net/123456789/2681 |
Appears in Collections: | PG Thesis |
Files in This Item:
File | Description | Size | Format | |
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170968.pdf | 1.77 MB | Adobe PDF | View/Open |
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