Effect of calcium carbonate on ammonium and urea nutrition of young tea plants (Camellia sinensis L.) grown in sand culture |
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Authors: | S Krishnapillai U Pethiyagoda |
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Institution: | (1) Tea Research Institute of Sri Lanka, Talawakele, Sri Lanka;(2) Present address: Coconut Research Institute, Lunuwila, Sri Lanka |
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Abstract: | Summary When calcium carbonate incorporated nutrient solution containing ammonium sulphate was added to sand in pots marked nitrification of the added ammonium was noted. It resulted in improved growth of tea plants and the toxicity effects of ammonium ions were completely eliminated. Where urea was used as the form of N supply, moderate (50%) nitrification was observed to occur even in the absence of calcium carbonate, however it was very rapid in its presence. |
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Keywords: | Acidity control Ammonium sulphate Calcium carbonate Nitrate Nitrification Urea |
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