Risk Assessment of the Irrigation Requirements of Field Crops in a Maritime Climate
| Autor: | Steve Green, A. Millar, T.M. Mills, Brent Clothier |
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| Rok vydání: | 2000 |
| Předmět: | |
| Zdroj: | ResearcherID Scopus-Elsevier |
| ISSN: | 1092-678X |
| DOI: | 10.1300/j144v02n02_16 |
| Popis: | Summary The need for more-efficient agricultural use of irrigation water arises out of the increased competition for water resources and the greater pressure on irrigation practices to be environmentally friendly. Here, we use a simple water-balance approach to model soil-water storage changes for the purpose of better estimating the irrigation requirements for a range of field crops growing in the Auckland region of New Zealand. In this humid, maritime climate irrigation requirements can very greatly in time and with crop type. Such information is needed by the local authorities, for planning purposes to determine appropriate water right allocations for local growers. The model we have developed considers the root zone to be one dimensional, comprising a uniform soil of known hydraulic properties, and having plants with roots extending vertically to a known depth. Model output consists of daily values of the soil moisture stored in the root zone. Crop water use was calculated via the Penman-Monteith mode... |
| Databáze: | OpenAIRE |
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