Assessment of replacement cost of soil erosion in Uva high lands tea plantations of Sri Lanka
Prasad Dharmasena1 * and M.S. Bhat1
1
Department of Geography and Regional Development,
University of Kashmir,
Srinagar,
India
http://dx.doi.org/10.12944/CWE.6.2.05
The Uva High lands tea plantations in Sri Lanka represent intermediate zone on agroclimetic classification. This study was conducted to assess the runoff, soil loss and subsequent nutrient losses from Vegetative Propagation (VP) and Old Seedling Tea (OST) plantations of Passara region of Uva high lands in Sri Lanka. Four experimental soil erosion measurement units were installed 2 each for both land categories of 25 m length and 4 m width during 2010-2011 for one successive year, from these land uses were quantified the following standard methodologies. The annual runoff soil loss of old seedling tea fields were recorded as 25.52 tons/ha/yr and VP fields were calculated as 3.41 tons/ha/yr respectively of Uva regions in Sri Lanka. Loss of N was recorded as 29.34 and 4.80 kg/ha/yr from seedling and VP tea fields respectively. Loss of P of seedling tea field was observed as 2.10 and P from VP field was 0.92 kg/ha/yr. Loss of K was calculated as 182.4 kg/ha/yr of seedling field and K was assessed in VP as 13.6 kg/ha/yr. Total loss of organic matter was evaluated as 319.01 and 60.03 kg/ha/yr seedling and VP tea fields respectively. Subsequently, Total replacement (onsite) cost of one hectare seedling tea fields was recorded as Rs. 18011.45 and the replacement cost of VP field was Rs.8270.89 with the labor charges for spreading fertilizers and repairing and maintaining costs.
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Dharmasena P, Bhat MS. Assessment of Replacement Cost of Soil Erosion in Uva High Lands Tea Plantations of Sri Lanka. Curr World Environ 2011;6:241-246 DOI:http://dx.doi.org/10.12944/CWE.6.2.05
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Dharmasena P, Bhat MS. Assessment of Replacement Cost of Soil Erosion in Uva High Lands Tea Plantations of Sri Lanka. Curr World Environ [serial online] 2011;6:241-246. Available from: http://www.cwejournal.org/?p=569
