Your search found 7 records
1 Finlayson, Max. 1984. Growth rates of Salvinia molesta in Lake Moondarra, Mount Isa, Australia. Aquatic Botany, 18:257-262.
Lakes ; Aquatic weeds ; Growth rate / Australia / North Western Queensland / Lake Moondarra / Mount Isa
(Location: IWMI-HQ Call no: P 7745 Record No: H039695)
2 von Oertzen, I.; Finlayson, Max. 1984. Wastewater treatment with aquatic plants: Ecotypic differentiation of Typha domingensis seedlings. Environmental Pollution, 35:259-269.
Wastewater treatment ; Filtration ; Aquatic plants ; Typha ; Growth rate ; Effluents ; Salinity / Australia
(Location: IWMI-HQ Call no: P 7746 Record No: H039696)
3 Hocking, P. J.; Finlayson, Max; Chick, A. J. 1983. The biology of Australian weeds: 12. Phragmites australis (Cav.) Trin. Ex Steud. The Journal of the Australian Institute of Agricultural Science, 49:123-132.
(Location: IWMI-HQ Call no: P 7747 Record No: H039697)
4 Toerien, D. F.; Cary, P. R.; Finlayson, Max; Mitchell, D. S.; Weerts, P. G. J. 1983. Growth models for Salvinia molesta. Aquatic Botany, 16:173-179.
(Location: IWMI-HQ Call no: P 7749 Record No: H039699)
5 Benin, S. (Ed.) 2016. Agricultural productivity in Africa: trends, patterns, and determinants. Washington, DC, USA: International Food Policy Research Institute (IFPRI). 359p. [doi: https://doi.org/10.2499/9780896298811]
Agricultural production ; Land productivity ; Agricultural development ; Growth rate ; Trends ; Development policies ; Farming systems ; Crop production ; Intensification ; Labour productivity ; Fertilizer application ; Technological changes ; Farmland ; Typology ; Spatial variation ; Development projects ; Performance evaluation ; Sustainability ; Farmers ; Population density ; Market access ; Forests ; Case studies / Africa
(Location: IWMI HQ Call no: 338.16 G100 BEN Record No: H047988)
http://www.ifpri.org/cdmref/p15738coll2/id/130468/filename/130679.pdf
https://vlibrary.iwmi.org/pdf/H047988.pdf
https://vlibrary.iwmi.org/pdf/H047988.pdf
(5.03 MB) (5.03 MB)
6 Ghosh, S.; Gorain, S.; Mondal, B. 2017. Spatio-temporal variations and links between irrigation and agricultural development in an eastern Indian state. Irrigation and Drainage, 66(5):784-796. [doi: https://doi.org/10.1002/ird.2151]
Agricultural development ; Irrigation management ; Spatial variation ; Water resources ; Groundwater irrigation ; Irrigation canals ; Irrigated land ; Agricultural production ; Growth rate ; Models / India / West Bengal
(Location: IWMI HQ Call no: e-copy only Record No: H048469)
(0.73 MB)
Spatio-temporal variations and links between irrigation and the agricultural sector were delineated in the districts of an eastern Indian state, West Bengal, during 2001–2002 to 2011–2012. Cumulative annual exponential growth rate (CAEGR) was calculated for each of the parameters considered under agriculture and irrigation. The irrigation and agricultural scenario at district level were assessed through different indexes. The growth rate of most of the districts showed a declining trend in 5 out of 11 selected parameters, viz. share of cultivable land to total land, share of net sown area to cultivable land, food grain production, paddy production and cropping intensity. Overall, growth rates were found for the canal- and groundwater irrigated areas, respectively, with an increase of net irrigated area (CAEGR 0.17). Both the agricultural development index (ADI) and the irrigation coverage index (ICI) were found to be high to very high (=60) in four districts, while two districts had very low to low ADI and ICI values (=40) in all the years. The source-wise irrigation utilization indices altogether explained 91% variation in ADI that was predominantly by canal and groundwater irrigation. Some missing links were also observed in some districts where the level of agricultural development did not match the irrigation scenario.
7 Sey, S. E.; Agbo, N. W.; Edziyie, R.; Amoah, Philip; Yeboah-Agyepong, M.; Nsiah-Gyambibi, R.; Abbas, S. 2021. Consumer preference, growth and profitability of African catfish (Clarias gariepinus) grown in treated and aerated wastewater fed ponds in Kumasi, Ghana. Heliyon, 7(3):E06424. [doi: https://doi.org/10.1016/j.heliyon.2021.e06424]
Wastewater aquaculture ; African catfish ; Clarias gariepinus ; Consumer behaviour ; Profitability ; Growth rate ; Fish consumption ; Willingness to pay ; Food safety ; Water quality ; Cost benefit analysis ; Wastewater treatment plants ; Sewage ponds ; Fishery production ; Fish culture ; Economic aspects / Ghana / Kumasi / Chirapatre Wastewater Treatment Plant
(Location: IWMI HQ Call no: e-copy only Record No: H050313)
https://www.sciencedirect.com/science/article/pii/S2405844021005296/pdfft?md5=7c042425f57193358043e0d7adad3731&pid=1-s2.0-S2405844021005296-main.pdf
https://vlibrary.iwmi.org/pdf/H050313.pdf
https://vlibrary.iwmi.org/pdf/H050313.pdf
(1.92 MB) (1.92 MB)
Recycling of wastewater provides a substantial solution to the global issue of water scarcity and high water use in aquaculture. However, this sustainable way of wastewater use has not been given much attention and exploration. This study focused on the consumer preference for fish grown in treated wastewater as well as the effect of aeration on the growth performance and economic benefit of African catfish (Clarias gariepinus) grown in treated wastewater. Two hundred (200) respondents from two communities (Chirapatre and Gyinyase) near the wastewater treatment plant in Kumasi were interviewed to determine their willingness to accept and pay for African catfish grown in treated wastewater. For the growth trial, a total of 600 fish (of average initial weight 39.12g) were stocked in two maturation ponds with 4 h (3:00am–7:00am) of aeration daily. The trial lasted for 12 weeks and variables monitored included the survival, growth performance (weight gain, specific growth rate, and yield) and water quality. Fish cultured in non-aerated wastewater ponds (NWFPs) under similar conditions as in aerated wastewater-fed ponds (AWFPs) served as control. The results indicated most important considerations for consumers in their choice of fish to consume were in order of importance; food safety, freshness of fish, taste and packaging. The proximity of consumers to the treatment plant, the price of fish, religion, and age and whether or not they were fish consumers affected their willingness to pay for African catfish grown in the treated wastewater significantly. For the growth trial, dissolved oxygen concentrations in the aerated ponds were significantly higher than in the NWFPs and this led to more than a doubling of the growth rates in the African catfish grown in the AWFPs (189.10g 11.32) as compared to the NWFPs (90.70g 11.59). The pond aeration improved fish growth significantly (p < 0.0098). On economic benefit, the aerated system yielded profits of 618.83 (€103.13) as compared to a loss of 104.99 (€17.50), which was incurred in the non-aerated ponds. Education of the consumers on the process of wastewater treatment and establishment of food safety guidelines will therefore be recommended to increase consumer interest in consuming fish from the treated wastewater.
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