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- Title
Net irrigation requirements for Florida turfgrasses.
- Authors
Romero, Consuelo; Dukes, Michael
- Abstract
A long-term (30 year) historical analysis of turfgrass monthly net irrigation requirements for southeast USA is analyzed and discussed in this paper. The process involved gathering weather data for ten locations in Florida plus one in Alabama, from 1980 through 2009, and data quality. Available weather data included maximum and minimum temperature, maximum and minimum relative humidity, wind speed, and rainfall. Solar radiation was estimated using the Hargreaves-Samani equation, and coefficients were calibrated for every location. Reference evapotranspiration (ET) was calculated using the ASCE-EWRI standardized reference evapotranspiration equation. Net irrigation was estimated using a daily soil-water balance. Variability in soil types and root depth was taken into account during the simulations, and three sets of monthly K values from the literature were applied from north through south Florida. Results showed that the calibrated Hargreaves-Samani adjustment coefficients varied from 0.14 in Tallahassee to 0.24 in Key West, with an inland average value of 0.15, and a coastal average value of 0.18. The calculated ET ranged from 1,296 mm year in Tallahassee to 1,658 mm year in Miami. The estimated net irrigation ranged from 423 mm year in Mobile, AL, to 1,063 mm year in Key West, FL. The number of irrigation events per year varied from 25 in Mobile to 161 in Key West. May and December were the months with the highest and lowest net irrigation requirements, respectively.
- Subjects
FLORIDA; IRRIGATION scheduling; TURFGRASSES; EFFECT of solar radiation on plants; EVAPOTRANSPIRATION; SOIL-Water Balance Model; COMPUTER simulation
- Publication
Irrigation Science, 2013, Vol 31, Issue 5, p1213
- ISSN
0342-7188
- Publication type
Article
- DOI
10.1007/s00271-013-0400-6