International Journal of Agricultural Sustainability

International Journal of Agricultural Sustainability 3 (2006) 177–188

Characterisation and Diagnosis of Rural-Urban Interface Farming in the Tu Liem and Thanh Tri Districts of Hanoi City, Vietnam

M.H. Hoang Fagerström1, Tran Yem3, Pham Quang Ha2, Vu Dinh Tuan2, C. Valhed1, K. Kvamme1 and Y. Nyberg1 1Swedish University of Agricultural Sciences (SLU), Department of Soil Sciences, Uppsala, Sweden, 2National Institute for Soils and Fertilizers (NISF), Dong Ngac, Tu Liem, Hanoi, Vietnam, 3Vietnam Environment and Sustainable Development Institute (VESDI), Hanoi, Vietnam and 4World Agroforestry Centre (ICRAF) Vietnam, Dong Ngac, Tu Liem, Hanoi, Vietnam

A research project was carried out in two areas in the outskirts of Hanoi city using a combination of qualitative and quantitative methods. The objective was to study interactions among the vegetable farming systems and the peri-urban context within which they are situated. The farms studied were characterised as small-scale farms that use high inputs of soil amendments and pesticides for diversified crop rotation systems. The main source of irrigation water and nutrients for vegetable farming in southern Hanoi is wastewater from the To Lich River. In northern Hanoi, irrigation water is obtained directly from the Red River and nutrients are supplied through high fertiliser inputs. The concentrations of COD (144-287 mg l ^{− 1}), N-NH₄ ⁺ (1-25 mg l ^{− 1}), PO₄^{3 −} (0.5-4 mg l ^{− 1}) and coliform (525 × 10³-28 × 10⁶ MPN 100 ml ^{− 1}) along the To Lich River was much higher than the limits specified in the Vietnamese standard for water used in agriculture. A higher Cu content in soil in Phuc Ly seems to be linked to the high input of chicken manure at the site. However, the contents of heavy metals in irrigation water, in vegetables and in the soil surface layer at the two sites were lower than the Vietnamese maximum permissible levels.

Keywords: peri-urban, vegetables, nutrient cycling, heavy metals, participatory method, farming

download full article