Pub Date : 2021-12-30DOI: 10.4038/jrrisl.v101i0.1901
C. Narayanan, J. Madhavan
{"title":"Juvenile growth, rubber yield and putative tolerance to foliar diseases in interspecific hybrids and half-sibs of Para rubber tree (Hevea spp.)","authors":"C. Narayanan, J. Madhavan","doi":"10.4038/jrrisl.v101i0.1901","DOIUrl":"https://doi.org/10.4038/jrrisl.v101i0.1901","url":null,"abstract":"","PeriodicalId":17393,"journal":{"name":"Journal of the Rubber Research Institute of Sri Lanka","volume":"65 1 Suppl 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76386544","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-12-30DOI: 10.4038/jrrisl.v101i0.1904
P. Gunarathne, H. V. A. Wikramasuriya, M. Jayathilaka, W. Wijesuriya
{"title":"Behavioural factors affecting the adoption of manuring of smallholder mature rubber cultivations in Moneragala district","authors":"P. Gunarathne, H. V. A. Wikramasuriya, M. Jayathilaka, W. Wijesuriya","doi":"10.4038/jrrisl.v101i0.1904","DOIUrl":"https://doi.org/10.4038/jrrisl.v101i0.1904","url":null,"abstract":"","PeriodicalId":17393,"journal":{"name":"Journal of the Rubber Research Institute of Sri Lanka","volume":"32 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82143318","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-12-30DOI: 10.4038/jrrisl.v100i0.1899
P. Gunarathne, T. Tennakoon, J. Edirisinghe, K. Mahindapala
The farmer-based organization known Thurusaviya Rubber Societies (TRSs) has been established by the Thurusaviya Fund (TF) for the development of the smallholder rubber sector. This study attempted to assess the present status and role of the TRSs in the smallholder rubber sector in the Moneragala District. The views of 18 Extension Officers (Rubber Development Officers and the two district Coordinating Officers of TF) with over five years of work experience were used to create two focus group discussions by Interpretative Phenomenological Analysis Approach. The perception of the key entities (Organizational structure, Organizational culture, Function of the organization, External environment and Intervention of organizational development) responsible for the development and welfare support for the rubber smallholders was assessed. Data were analysed qualitatively as a case study in Moneragala. Results revealed, that the majority of TRSs considered in the study were not performing well due to factors such as poor leadership, lack of transparency, lack of enthusiasm of members, lack of trustworthiness, attitudes of members, the role of the Field Officers and changes in the external environment and politics. The contribution from the management unit and the membership was greater in TRSs that were highly active than that of the poorly active TRSs. The self-reliance capacity was low in the majority (99%) of the TRSs and was highly dependent on Extension Officers involved and the Government’s assistance. The majority of TRSs were not goal-oriented and under performing and not dynamic in organizational performances. Hence, extension and development agents feel that critical intervention is required to overcome the above weaknesses. Therefore, organizational development should be done by concerning; goal orientation, need identification, the interaction between Field Officers and TRSs and guiding the TRSs, restructuring of organizations, offering compensation for the management unit, development of physical resources and developing as business entities to achieve their goals and objectives.
{"title":"The present status and role of the Thurusaviya Rubber Societies in the smallholder rubber sector in Moneragala District: Extension Officers’ perception","authors":"P. Gunarathne, T. Tennakoon, J. Edirisinghe, K. Mahindapala","doi":"10.4038/jrrisl.v100i0.1899","DOIUrl":"https://doi.org/10.4038/jrrisl.v100i0.1899","url":null,"abstract":"The farmer-based organization known Thurusaviya Rubber Societies (TRSs) has been established by the Thurusaviya Fund (TF) for the development of the smallholder rubber sector. This study attempted to assess the present status and role of the TRSs in the smallholder rubber sector in the Moneragala District. The views of 18 Extension Officers (Rubber Development Officers and the two district Coordinating Officers of TF) with over five years of work experience were used to create two focus group discussions by Interpretative Phenomenological Analysis Approach. The perception of the key entities (Organizational structure, Organizational culture, Function of the organization, External environment and Intervention of organizational development) responsible for the development and welfare support for the rubber smallholders was assessed. Data were analysed qualitatively as a case study in Moneragala. Results revealed, that the majority of TRSs considered in the study were not performing well due to factors such as poor leadership, lack of transparency, lack of enthusiasm of members, lack of trustworthiness, attitudes of members, the role of the Field Officers and changes in the external environment and politics. The contribution from the management unit and the membership was greater in TRSs that were highly active than that of the poorly active TRSs. The self-reliance capacity was low in the majority (99%) of the TRSs and was highly dependent on Extension Officers involved and the Government’s assistance. The majority of TRSs were not goal-oriented and under performing and not dynamic in organizational performances. Hence, extension and development agents feel that critical intervention is required to overcome the above weaknesses. Therefore, organizational development should be done by concerning; goal orientation, need identification, the interaction between Field Officers and TRSs and guiding the TRSs, restructuring of organizations, offering compensation for the management unit, development of physical resources and developing as business entities to achieve their goals and objectives.","PeriodicalId":17393,"journal":{"name":"Journal of the Rubber Research Institute of Sri Lanka","volume":"327 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75486367","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-12-30DOI: 10.4038/jrrisl.v100i0.1896
P. Seneviratne, N. Nayanakantha, R. K. Samarasekara, W. K. S. W. Watawala
{"title":"Effect of tapping rest during wintering months on latex yield and tapping panel dryness in three rubber (Hevea brasiliensis) clones","authors":"P. Seneviratne, N. Nayanakantha, R. K. Samarasekara, W. K. S. W. Watawala","doi":"10.4038/jrrisl.v100i0.1896","DOIUrl":"https://doi.org/10.4038/jrrisl.v100i0.1896","url":null,"abstract":"","PeriodicalId":17393,"journal":{"name":"Journal of the Rubber Research Institute of Sri Lanka","volume":"12 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78804802","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-12-30DOI: 10.4038/jrrisl.v100i0.1900
W. A. D. R. Tharanaga, S. Withanage, K. Kumara
{"title":"An attempt to validate molecular and field level screening results for the Corynospora leaf fall disease in rubber (Hevea brasiliensis)","authors":"W. A. D. R. Tharanaga, S. Withanage, K. Kumara","doi":"10.4038/jrrisl.v100i0.1900","DOIUrl":"https://doi.org/10.4038/jrrisl.v100i0.1900","url":null,"abstract":"","PeriodicalId":17393,"journal":{"name":"Journal of the Rubber Research Institute of Sri Lanka","volume":"85 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88647926","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-12-30DOI: 10.4038/jrrisl.v100i0.1897
P. Gunarathne, T. Tennakoon, J. Edirisinghe
{"title":"Capital assets impact on rubber farming in Moneragala in Sri Lanka: Rubber smallholders’ perception","authors":"P. Gunarathne, T. Tennakoon, J. Edirisinghe","doi":"10.4038/jrrisl.v100i0.1897","DOIUrl":"https://doi.org/10.4038/jrrisl.v100i0.1897","url":null,"abstract":"","PeriodicalId":17393,"journal":{"name":"Journal of the Rubber Research Institute of Sri Lanka","volume":"222 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85916321","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-12-30DOI: 10.4038/jrrisl.v100i0.1898
Daminda Iluppalla, S. Ranatunga, S. Siriwardena
{"title":"Silica/white rice husk ash hybrid filler for rubber composites for the manufacture of low speed castor wheel rubber treads","authors":"Daminda Iluppalla, S. Ranatunga, S. Siriwardena","doi":"10.4038/jrrisl.v100i0.1898","DOIUrl":"https://doi.org/10.4038/jrrisl.v100i0.1898","url":null,"abstract":"","PeriodicalId":17393,"journal":{"name":"Journal of the Rubber Research Institute of Sri Lanka","volume":"34 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78935844","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-12-30DOI: 10.4038/jrrisl.v99i0.1895
P. Anushka, S. Withanage, N. S. Karunaratne, K. Kudaligama, T. Dahanayake, H. P. Peiris
{"title":"Assessment and selection based on girth and yield performance of new Hevea genotypes generated from controlled hybridization","authors":"P. Anushka, S. Withanage, N. S. Karunaratne, K. Kudaligama, T. Dahanayake, H. P. Peiris","doi":"10.4038/jrrisl.v99i0.1895","DOIUrl":"https://doi.org/10.4038/jrrisl.v99i0.1895","url":null,"abstract":"","PeriodicalId":17393,"journal":{"name":"Journal of the Rubber Research Institute of Sri Lanka","volume":"29 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80159330","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-12-30DOI: 10.4038/jrrisl.v99i0.1886
N. Karunarathne, L. Fernando, K. Kudaligama, W. Lakmini, N. N. Abewardhana, P. Madushani, M. Perera, P. Seneviratne, V. Rodrigo
{"title":"Effectiveness of commercially available selected water-based and oil-based ethephon formulations as a yield stimulant of rubber (Hevea brasiliensis)","authors":"N. Karunarathne, L. Fernando, K. Kudaligama, W. Lakmini, N. N. Abewardhana, P. Madushani, M. Perera, P. Seneviratne, V. Rodrigo","doi":"10.4038/jrrisl.v99i0.1886","DOIUrl":"https://doi.org/10.4038/jrrisl.v99i0.1886","url":null,"abstract":"","PeriodicalId":17393,"journal":{"name":"Journal of the Rubber Research Institute of Sri Lanka","volume":"73 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91449335","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-12-30DOI: 10.4038/jrrisl.v99i0.1885
N. Nayanakantha, S. Nakandala, W. Karunathilake, M. De Alwis, L. N. De Zoysa, P. Seneviratne
{"title":"Moringa oleifera leaf extract as a biostimulant on growth and other physio-chemical attributes of rubber (Hevea brasiliesnsis) under drought and heat stress conditions","authors":"N. Nayanakantha, S. Nakandala, W. Karunathilake, M. De Alwis, L. N. De Zoysa, P. Seneviratne","doi":"10.4038/jrrisl.v99i0.1885","DOIUrl":"https://doi.org/10.4038/jrrisl.v99i0.1885","url":null,"abstract":"","PeriodicalId":17393,"journal":{"name":"Journal of the Rubber Research Institute of Sri Lanka","volume":"112 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77138272","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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