Sugar
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Browsing Sugar by Subject "Diseases"
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Item Ratoon Stunting Disease of Sugar-Cane In Kenya(1973) Early, M. P.Results of four trials in sugar-cane growing areas of Kenya confirm a previous report of the presence of a disease similar to Ratoon stunting disease, Estimates of yield loss in the major variety C042l were between 17 and 21 percent at Mumias and approximately 4 percent at Ramisi; percentage loss of available pol was 22.8 at Mumias. Cane yield and available pol losses in variety NC0293 were not significant. It is recommended that known methods of RSD control be applied routinely on estates and that research on varietal resistance and yield losses be continued.Item Sugar-Cane Diseases of Potential Importance in East Africa(1971) Rogers, P. F.Four major diseases of sugar-cane are at present found in Southern Africa, Madagascar and the Mascarene Islands and are of potential importance in East Africa. The diseases are leaf scald, gumming disease, chlorotic streak and Fiji Disease. Exclusion of the diseases from East Africa depends on effective plant quarantine procedures and on the observance of import regulations. The control of outbreaks is discussed with reference to short- and long-term measures. The former consist of attempts to eradicate the pathogen with attempts at isolation should this fail. Long-term measures involve chemical and cultural control practices where these are known to be effective, together with the use of resistant varieties.Item A Survey of Sugar Disease and Pests in East Africa(1972) Rogers, P. F.; Simbwa-Bunnya, M.N.; Kedemi, R.MA survey of sugar-cane diseases and pests in East Africa carried out in 1970 indicated that brown spot (Cercospora longipes Butler)and culmicolous smut (Ustilago scitaminea Syd.) are the major diseases and that white stem scale (Aulacaspis tegalensis (Zehntner), pink mealy bug (Saccharicoccus sacchari Ckll.) and cane stem borer (Eldana saccharina Wlk.), the major pests. Mosaic (sugar-cane mosaic virus), red stripe (Xanthomonas rubrilineans (Lee et al.) Starr et Burkh.) and pokkah boeng (Gibberella moniliformis (Sheldon) Wineland) were recorded but were not considered to be important. Marked differences in incidence of diseases and pests were shown in the six geographically distinct areas surveyed. Methods used to produce a yield loss index for diseases estimated and pests (9.5 per cent and 6.0 per cent loss respectively) are described. Regular surveys are suggested as useful monitors of changes in diseases and pests levels which at present are fairly low.Item Varietal Resistance to Sugar Cane Smut in Kenya(1967) Waller, J. M.
