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Furrow irrigation design with multicriteria analysis
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Orientador(es)
Resumo(s)
This study describes an application of the SADREG decision support system to cotton
furrow irrigation in Central Fergana Valley, Uzbekistan. This application aims at
modernizing furrow irrigation and is based upon field trials on crop water requirements
and surge irrigation. A large number of design alternatives were generated for a typical
field, which were compared in terms of water use, irrigation water productivity, irrigation
costs and yield value. This comparison has shown that alternatives that favour water use
performance are different from those leading to higher farm incomes. For multicriteria
analysis, three different prioritization schemes were analysed, one relative to economic
results, another referring to water saving, and the third representing a balanced situation
between the two. Very different rankings resulted, with alternatives ranked high for
economic results being ranked low for water saving, and vice-versa. The high ranked
alternatives for the balanced prioritization scheme are common to the other two, but the
decision demands further consideration of risk factors and users’ preferences. This
application shows that adopting water saving technologies and deficit irrigation is generally
difficult in economic terms, thus requiring support to farmers if their income is to be
maintained
Descrição
Available at ScienceDirect
Palavras-chave
furrow irrigation multicriteria analysis design
Contexto Educativo
Citação
"Biosystems Engineering". ISSN 1537-5110. 109 (2011) 266-275