Water Use in Wetland Kalo Cultivation in Hawaii : Open-File Report 2007-1157

Water Use in Wetland Kalo Cultivation in Hawaii : Open-File Report 2007-1157

Description

Ten cultivation areas (8 windward, 2 leeward) were selected for a kalo water-use study, primarily on the basis of the diversity of environmental and agricultural conditions under which wetland kalo is grown and landowner permission and availability. Flow and water-temperature data were collected at the loi complex level and at the individual loi level. To ensure that flow and temperature data collected at different loi reflect similar irrigation conditions (continuous flooding of the mature crop), only loi with crops near the harvesting stage were selected for water-temperature data collection. The water need for kalo cultivation varies depending on the crop stage. In this study, data were collected during the dry season (June-October), when water requirements for cooling kalo approach upper limits. Flow measurements generally were made during the warmest part of the day, and temperature measurements were made every 15 minutes at each site for about a two-month period. Flow and temperature data were collected from kalo cultivation areas on four islands - Kauai, Oahu, Maui, and Hawaii. The average inflow value for the 19 loi complexes measured in this study is 260,000 gallons per acre per day, and the median inflow value is 150,000 gallons per acre per day. The average inflow value for the 17 windward sites is 270,000 gallons per acre per day, and the median inflow value is 150,000 gallons per acre per day. The average inflow value for the two leeward sites is 150,000 gallons per acre per day. The average inflow value measured for six individual loi is 350,000 gallons per acre per day, and the median inflow value is 270,000 gallons per acre per day. The average inflow value for the five windward loi is 370,000 gallons per acre per day, and the median inflow value is 320,000 gallons per acre per day. The inflow value for the one leeward loi is 210,000 gallons per acre per day. These inflow values are consistent with previously reported values for inflow an


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Available Format

Details

Author(s)
Stephen B Gingerich, United U S Department of the Interior, Et Al
Format
Paperback | 80 pages
Dimensions
189 x 246 x 4mm | 163g
Publication date
11 Feb 2013
Publisher
Bibliogov
Publication City/Country
United States
Language
English
Illustrations note
black & white illustrations
ISBN10
1288744110
ISBN13
9781288744114