Research & reports

Shazia Iram, Iftikhar Ahmad, Doris Stüben · Pakistan Journal of Botany · Asia

Soil samples were collected from peri-urban agricultural land in Lahore, Pakistan, irrigated by industrial and sewerage waste from the Hudiara drain, and from mine waste soil in Wiesloch, Germany, and analyzed for heavy metals by X-ray fluorescence and ICP-MS and for fungal diversity and frequency by a soil dilution method. X-ray fluorescence found higher Zn, As and Pb in the German mine waste soil, and the more sensitive ICP-MS found higher Fe, Mn, Cu, As, Sr, Mo, Cd, Sb, Ti, Zn and Pb there as well; the Pakistani peri-urban soils had lower heavy metal concentrations than the German mine waste but higher overall fungal frequency and diversity. Testing radial growth of isolated Aspergillus niger, A. flavus and A. nodulans against CdCl2, CuSO4, NiCl2 and ZnCl2 at 1-40 ppm, all tested fungi tolerated ZnCl2 (25 ppm) and NiCl2 (12 ppm) but none tolerated CdCl2 or CuSO4.

Abha Singh, Salahuddin Mohd. · National Geographical Journal of India · India

In-depth field research around the Iglas sewage pumping station on the Aligarh-Mathura road in Aligarh, India, surveyed 41 farming households and some consumers across five peri-urban villages — Bhojpura, Hari Narayan ki Sarai, Hajipur Chohata, Kheri Khwaja Buddha and Daurala Nirpal — that had used urban wastewater for irrigation for many years. Farmers and vegetable sellers reported suffering from ailments including diarrhoeal disease, typhoid fever, hookworm, amoebiasis and skin infections, yet their primary concern was securing enough water to sustain crop productivity and income, while consumers were more focused on getting a fresh, steady supply of vegetables than on the health risk.

Seyed Esmaeil Mahdavian, R. Somashekar · ePrints@Bangalore University (Bangalore University) · India (Bangalore)

A study in Bangalore city, India, showed that urban consumers are at greater risk of purchasing fresh fruits with high levels of heavy metals beyond the legally permissible limits defined by the Indian Prevention of Food Adulteration Act, 1954. These national norms are less strict than international food safety standards.

Cheng Cun-ren · Journal of Agricultural Mechanization Research · China

This study introduces the status of machinery equipment for facility agriculture in China and compares it with foreign equipment. It analyzes problems in Chinese facility agriculture, finding that the current machinery equipment faces challenges in achieving high efficiency, quantity, and quality compared to international standards.

Euis Suryaningsih · Jurnal Hortikultura · Indonesia (Bandung)

From January to July 2001, a field experiment on vegetable disease control in a mosaic farming system in periurban agriculture was conducted at a farmer's field in Rancaekek, Bandung, Indonesia. Treatments included white plastic net cages, biorational pesticides, Bacillus subtilis, a mixture of Mancozeb and Bacillus subtilis, and an unsprayed control. All tested alternative control methods were very effective against major diseases of chili pepper, shallot, eggplant, beans, and cucumber, but the use of poisonous synthetic pesticides in periurban agriculture increases the likelihood of contaminating humans and the environment.

XU Yong-xian, Biao Huang · Soils · China

A study of a small-scale vegetable farming system in peri-urban Nanjing, China, monitored heavy metal balances and pollution potential from July 2003 to July 2004. Heavy metals entered the soil mainly through fertilization and irrigation, with organic manure application accounting for more than 98% of inputs. Annual heavy metal input in the area was significantly higher than in European farmland, while annual output was very low, under 10% of input, leading to accumulation of heavy metals in the plots; long-term vegetable cultivation had already caused heavy metal buildup in the soils. Copper, lead, zinc, and cadmium concentrations in vegetables and soil were still below national safety standard limits, so the vegetable farming system was assessed as currently safe. However, an evaluation that incorporated atmospheric deposition showed the region carries a high risk of copper, zinc, and cadmium contamination, and the study concludes that intensive vegetable cultivation will aggravate soil heavy metal pollution, potentially pushing the soil to Second Grade of the National Soil Environment Quality Standard within several decades.

Do Thuy Trang, Kåre Mølbak, Phung Dac Cam, Anders Dalsgaard · Tropical Medicine & International Health · Vietnam (Hanoi)

A cross-sectional study in a peri-urban area of Hanoi, Vietnam, surveyed 400 agricultural households and examined 807 stool samples from 620 adults and 187 children for helminth infections. The study found that 39% of samples were infected with helminths, with Ascaris sp. at 21.6%, Trichuris sp. at 9.8%, and hookworm at 21.8%. Wastewater exposure was not a major risk, but lack of sanitation facilities and use of fresh or inadequately composted human excreta in agriculture were important risk factors for infection.

Zhang Xue-mang · Journal of Beijing University of Agriculture · China

This paper addresses the slow development of agricultural technology in Wuhan City, China. It states that Wuhan needs to import advanced agricultural technologies, research and disseminate techniques for fish and fowl culture, vegetable growth, and agricultural product processing. The paper emphasizes the necessity to improve modern distribution quality and strengthen government service and management in agricultural technological innovation, highlighting a current governance deficiency.

이민수, 박덕병, 황대용 · 농어촌관광연구 · South Korea

A cost-benefit analysis of Sunchang County's 2007 pilot "allotment garden with log house" program (family farm-stay plots), launched by South Korea's Rural Development Administration in JeonBuk Province, using the county's internal records and interviews with project managers. The analysis found the program to be an inefficient business with a weak cost-benefit structure that produced a negative net benefit: at an assumed 6.5% discount rate, net present value was estimated at -262 million won, with a benefit-cost ratio of 0.70 and an internal rate of return of 2.7%. The authors nonetheless conclude the program is worth maintaining as part of the government's balanced regional development policy.

Sun Guo-xing · Tianjin Agricultural Sciences · China (Tianjin)

This article analyzes the mutual impacts of urban agriculture and urbanization in Tianjin, China, and suggests ways for urban-rural integrated coordinated development. It discusses key strategic problems for further development based on the current situation of urban agriculture and urbanization. The article reports on strategy and general development trends for urban agriculture and urbanization.

Jianguo Dai · Journal of Shenzhen Polytechnic · China (Shenzhen)

Urban agriculture in Shenzhen faces problems including decreasing farmland, inadequate skilled farmers, poor disaster resistance, immature insurance, increasing contamination of water, soil, air, and agricultural products, and poor modern enterprise management. Strategies proposed for sustainable development include specific laws, pollution protection, education, research, technology application, industrial technology application, leisure agriculture development, and diversification.

R. B. Singh · IAHS-AISH publication · India

A study on wastewater management in 300 class-I cities and 23 metropolitan cities in India found that the total wastewater generated is approximately 158x10^8 l/day, with treatment capacity being only 375x10^7 l/day. In metropolitan cities, only 30% of wastewater is treated before disposal, and most cities only have primary treatment facilities. Untreated water is being used for urban agriculture, posing risks to public health and potential surface and groundwater pollution.

Ching‐Fu Chen, 黃琮聖, 閻淑慧, 蕭玉華, 蔡郁芬 · · Taiwan

This study surveyed 180 participants from five city farms in Taichung, Taiwan, between March and April 2004, to assess service quality, satisfaction, and intentions. While perceived service qualities were generally good, overall satisfaction was rated as "slightly satisfied," and renewal and recommendation intentions were rated as "slightly agreed," indicating significant room for improvement. Service content and management had significant effects on overall satisfaction, management on renewal, and service content on recommendation.

Kenny Lynch · · Indonesia (Jakarta)

This piece reviews the literature on urban agriculture (UA), noting that Bryceson (1993) provides documentary evidence from as early as 1939 of UA's importance during and after the Second World War, and that the UN University's Food Energy Nexus research programme in the mid-1980s prompted researchers to examine agricultural cultivation within city boundaries more seriously. Since then, a significant body of literature has developed around a central debate over whether urban agriculture is beneficial, summarized by Lynch (2002). This summary is described as having two problems: it assumes urban agriculture is a homogenous activity with universally similar impacts, and it is largely viewed from the perspective of a city's population, so urban agriculture tends to be seen as beneficial for food, employment and the environment with little consideration of its impacts on the rural-urban food supply. This led Lynch, Binns and Olofin (2001) to argue that urban agriculture should instead be considered part of the broader urban food supply system.

James M. Wolf, M S van Wijk, X Cheng, Yuanhao Hu, C.A. van Diepen, A.W. Jongbloed, H van Keulen, C H Lu, R.P. Roetter · Environment and Urbanization · China (Beijing)

This paper reviews agricultural production trends in Beijing Municipality and their impact on water quality. Rapid urbanization and agricultural intensification have led to concerns regarding water resource quantity and quality. The agricultural sector, while supplying food, is a major water user and has contributed to significant water supply-demand gaps and high levels of water pollution, particularly from intensive crop, vegetable, and livestock production.

Liao Minghui · Nongye xiandaihua yanjiu · China (ChangshaZhuzhouXiangtan)

This paper discusses the essentiality of urban agriculture development in urban compact districts, highlighting its multiple efficacies including economic, social, and ecological benefits. Based on an analysis of typical examples in ChangshaZhuzhouXiangtan, the paper describes the current status and identifies many problems in urban agriculture. Finally, numerous countermeasures are proposed for these issues.

Han-Cheol Hwang, Soo‐Myung Choi · Journal of Korean Society of Rural Planning · South Korea (Seoul)

A study in Seoul examined farmers' views on the Green Belt policy. Leaseholders did not want changes, while landowning farmers desired revision or dissolution, with both groups citing development delays and difficulty changing land use. The Green Belt policy was found to cause development delays and land use change difficulties, indicating negative impacts on farmers.

You Shao · · China (Chongqing)

This paper examines the development of urban agricultural industrialization in the metropolitan periphery, using Chongqing, China, as an example. It identifies the position, role, and favorable conditions of urban agriculture, which embodies economic, social, and ecological functions. The study also highlights existing problems in Chongqing's agricultural industrialization and proposes countermeasures.

Yansui Liu · · China

China's agricultural structure adjustment from 1997 to 2000 focused on comprehensive adjustments of quality, varieties, industrial, and regional structures. While distinctive agriculture increased by 3.1% during this period, the effects of the adjustment varied significantly due to regional comparative advantages. Notably, foodstuff crop seeding areas dropped by 3.97% and foodstuff yield by 6.47% nationally, with visible drops in 22 provinces, leading to a warning that loosening vigilance on food security necessarily leads to a significant drop in China's food security.

Nigel Poole, DS Bhupal, Fiona Marshall, Dolf te Lintelo · · India

New knowledge is presented on the impacts of urban and peri-urban (UPU) environmental pollution on food safety attributes of vegetable marketing systems in India. Air pollution reduces crop yield and nutritional quality, and is a major source of particulate contaminants that accumulate at toxic levels in edible crops. The study explores the balance between public and private quality assurance initiatives and identifies wholesale markets as a potential entry point for quality assurance.

L.M. van den Berg · WIT transactions on ecology and the environment · Africa, Asia

Urban agriculture, despite severe competition for space, plays roles such as fresh food supply, leisure, supplementary income for the urban poor, and green space management. Case studies in Africa and Southeast Asia demonstrate the difficulty of maintaining these roles due to public health and environmental degradation concerns. Urban agricultural producers may rely on polluted streams for irrigation, cause soil erosion through inappropriate farming techniques, or poison surrounding residents with pesticides. The paper suggests that urban agriculture could be more beneficial to the urban system if treated by town planners as a normal urban function requiring both regulation and protection.

Chen You · Forestry Science and Technology · China (Kunming)

This paper investigated the harm caused by important pests and endangered hosts on garden plants in Kunming communities, China. It identified that the low level of pest and disease control is due to an unsound forecast system, an unreasonable management system, and a shortage of knowledge among working personnel. Corresponding countermeasures proposed include establishing a sound forecast system, changing the current management system, and improving the knowledge of working personnel.

Zhao Shu-mao · 系统科学与系统工程学报(英文版) · China (Kaifeng)

This paper discusses the structure and efficiency of agricultural land use in Kaifeng Suburban, China, based on system theory. It reveals current problems such as benefit deviation from resource allocation and distinguished unemployment. The study advances resolution measures for sustainable development, including farmland protection, ecological agriculture, sustainable land use, and decreased input of synthetic matter.