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Item Leaf and soil analysis:a useful tool in the determination of nutrient requirements(National Resources, Energy Science Authority of Sri Lanka:Colombo, 1990) Jayasekara, K.S.Item Boron deficiency in young coconut (Cocos nucifera L.) in Sri Lanka:symptoms and corrective measures(CRI, 1988) Jayasekara, K.S.; Loganathan, P.Item Efficient use of dolomite in coconut cultivation(National Resources, Energy Science Authority of Sri Lanka:Colombo, 1990) Jayasekara, K.S.