Research & reports

LiYuan LiYuan, Y Zu · Yunnan Nongye Daxue xuebao · China

This study tracked six years of dynamic change in agricultural structure, function, and diversity in Xiaodiantou Village, Gejiu City, Yunnan Province, China, as an example of suburban eco-agriculture. Results showed: (1) the structure shifted from a conventional, single food-production type to a commercial economic type combining hog raising, biogas, food crops, forestry, fruit, and vegetables; (2) economic benefit and the output-input value ratio increased gradually; (3) output of matter and energy increased with input, but the output-input ratio of energy and matter decreased when input became excessive; and (4) system diversity was closely related to structure and function, increasing as structure and function improved. Based on these findings, a measure for sustainable development was proposed.

Hans Jansen, David J. Midmore, P.H. Binh, S. Valasayya, L.C. Tru · Netherlands Journal of Agricultural Science · Vietnam

This study in peri-urban Ho Chi Minh City, Vietnam, examined the income and cropping systems of small vegetable farms (average 0.8 ha, 60% dedicated to vegetables). Vegetables yielded about $1000 in total revenues or $650 added value per farm annually, with added value per hectare per day being double or more than that for rice. Constraints included labor limitations (especially for irrigation), high input costs for organic materials, chemical fertilizers, and pesticides, as well as pests, low and variable vegetable prices, and an apparent overuse of chemical fertilizers and insecticides.

Indian Urban Landscape · · India

This study focuses on the diversity and complexity of agricultural production organization in urban landscapes of nonindustrial societies, specifically analyzing the role of reservoirs in the agricultural landscape around Vijayanagara, southern India. Vijayanagara's agricultural facilities and strategies were diverse in both form and scale, ranging from vast canal irrigation to small rain-fed plots. Reservoirs, as a single morphological type, crosscut traditional agricultural categories, indicating significant variability in productive organization and suggesting that ecological and organizational contexts, beyond facility typology, are crucial for understanding production.