Mathew, A.S.Thomas Varkey2014-05-122014-05-121976-12Journal of Plantation Crops 4(2) : 54-57, December 1976http://hdl.handle.net/123456789/1138The healthy and diseased tracts in the northern border of root (wilt) affected area in Kerala State were studied to find out how far calcium and magnesium contents of soil and leaf were involved in the development of the disease. Soil and leaf samples from healthy and diseased tracts were collected from sandy, loamy, and laterite soils covering the coastal, midland, and hilly regions, respectively. Results indicated that the status of calcium and magnesium of soil and leaf could not be considered as a factor for the incidence of roof (wilt) disease of coconut.enArticle