Effect of different nitrogenous fertilizers on the growth and yield of three years old tea (Camellia sinensis) plants
2007
Sarwar, S. (National Tea Research Inst., Mansehra (Pakistan)) | Ahmad, F. (National Tea Research Inst., Mansehra (Pakistan)) | Hamid, F.S. (National Tea Research Inst., Mansehra (Pakistan)) | Khan, B.M. | Khurshid, F.
Effect of different nitrogenous fertilizers on the growth and yield of three years old tea (Camellia sinensis L) plants was investigated at National Tea Research Institute, Shinkiari, (Mansehra) during 2005-06. The nitrogenous fertilizers used were ammonium sulphate, calcium ammonium nitrate, urea and nitrophos along with control receiving no fertilizer. All the nitrogenous fertilizers were applied at the rate of 100 kg N per acre along with the constant doses of P and K (25 kg, 15 kg per acre, respectively). It was found that effect of all the fertilizers on increase of plant height, plant canopy, fresh tea leaves yield and made tea yield was non significant at 5% probability, however ammonium sulphate produced the highest increase in plant height (63.95 cm), plant canopy (3763.3 cm2), fresh tea leaves yield (1695.50 kg per acre) and made tea yield (339.30 kg per acre) compared to the other fertilizer treatments. Regarding made tea yield, the response of other fertilizers was in the order of nitrophos (327.40 kg per acre), urea (322.80 kg per acre) and calcium ammonium nitrate (314.16 kg per acre) respectively. Minimum made tea yield (253.40 kg per acre) was recorded in control. Ammonium sulphate as a source of nitrogen (100 kg per acre) along with P (25 kg per acre) and K (15 kg per acre) is recorded for the best growth and yield of tea under the agro-climatic condition of Mansehra, Pakistan.
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