Browsing by Author "Vellaichamy, K."
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Item Cytogenetic Studies in Barley (Hordeum vulgare L.)(1973) Vellaichamy, K.Item Cytological investigations in different varieties of Cocosa Nucifera and related species(Central Plantation Crops Research Institute Kasaragod - 671 124,Kerala, 1979) Thankamma Pillai, P.K.; Mohammed Syed, A.A.; Vellaichamy, K.; Zubaida, P.M.Item Effect of washing techniques on nutrient losses and preparation of samples in arecanut palm(2007-02-08) Vellaichamy, K.; Yadava, R.B.R.The affect of washing or removal of surface contaminants, mineral losses and essentiality of with or without midribs were examined. Concentrations of N and P in the levels of arecanut palms were not affected markedly by the washing procedures whereas K content was affected due to leaching. However, washing is not advisable at the time of sample preparation. Leaf laminae without midribs indicated better index for the content of elements.Item Histopathology of roots of coconut palm affected with root (wilt) disease(2007-02) Govindankutty, M.P.; Vellaichamy, K.Anatomy of loots from healthy and diseased coconut palms was studied using aerial microtome and free-hand sections. Some externally healthy roots from apparently healthy, and obviously diseased trees (naturally infected) from an area of active disease spread showed poorly staining mechanical and vascular tissues. Walls of tracheal elements were thinner and disorganized. Tyloses occurred occasionally in metaxylem vessels. Several roots revealed degenerate phloem. Necrotic effects were shown by abnormally and deeply staining phloem with dense contents. Tissue degeneration was less pronounced in metaphtoem. Many healthy-looking roots from apparently healthy and diseased palms had fungal hyphae (?) in metaxylem. Sections of roots with external lesions of the burrowing nematode Radopholus similis revealed the presence of nematodes and their eggs in cortical burrows. Such burrows contained deeply staining cells encircled by abnormal sclerenchyma. Degenerative changes in conducting elements could derange the flow of nutrients and thereby contribute to root death due to starvation.Item Leaf Sampling Techniques in Arecanut Palm for Nutrient Analysis(2007-02) Yadava, R.B.R.; Vellaichamy, K.; Mathai, C.K.A programme of selection of leaves of arecanutpalm for routine nutrient analysis is described and 8th leaf for nitrogen, 2nd for phosphorus and potas. sium, 3rd for calcium and 5th for magnesium analysis and for composite analysis of the major nutrients, the 2nd leaf have been suggested,Item Modification in the Colorimetric Estimation of Mg.(2007-02) Yadava, R.B.R.; Vellaichamy, K.; Mathai, C.K.Item Note on the investigation on the mineral accumulation of arecanut palm affected by yellow-leaf disease(2007-02-08) Yadava, R.B.R.; Mathai, C.K.; Vellaichamy, K.Item Note on the investigation on the mineral accumulation of arecanut palm affected by yellow-leaf disease(1973-09) Yadava, R.B.R.; Mathai, C.K.; Vellaichamy, K.Item Research Note: Modification in the Colorimeteic Estimation of Mg.(1969) Yadava, R.B.R.; Mathai, C.K.; Vellaichamy, K.Item Role of Nutrient Elements and their Deficiency Symptoms with Reference to Arecanut(2007) Yadava, R.B.R.; Vellaichamy, K.; Mathai, C.K.Item Seasonal Changes In Carbohydrate Composition Of Cacao Pods Of Theobroma Cacao L.(1972) Yadava, R.B.R.; Somiah, M.P.; Vellaichamy, K.; Mathai, C.K.Investigations on seasonal changes of carbohydrate contents of cacao pods (Theobroma cacao L.) were carried out at Central Plantation Crops Research Institute (Regional Station), Vittal during the year 1970-71, Seasonal fluctuations in reducing sugars, non-reducing sugars, total sugars and starch of husk and beans are described. All the soluble sugars are found to be rich in husk than in beans whereas the content of alcohol insoluble solids (starch) was obtained more in beans than in husk. However, the carbohydrate constituents of cacao pods are very much variable in relation to different months.Item Seasonal Changes in Carbohydrate Composition of Cacao Pods of Theobroma Cacao L.(1972) Yadava, R.B.R.; Mathai, C.K.; Vellaichamy, K.; Somiah, M.P.Investigations on seasonal changes of carbohydrate contents of cacao pods (Theobroma cacao L.) were carried put at Central Plantation Crops Research Institute (Regional Station), Vittal during the year 1970-71, Seasonal fluctuations in reducing sugars, non-reducing sugars, total sugars and starch of husk and beans are described. All the soluble sugars are found to be rich in husk than in beans whereas the content of alcohol insoluble solids (starch) was obtained more in beans than in husk. However, the carbohydrate constituents of cacao pods are very much variable in relation to different months.Item Yellow Leaf Disease of Arecanut: Comprehensive Package Plan(1976) Nagaraj, B.; Vellaichamy, K.; Mathai, C.K.