WEB-BASED IRRIGATION SCHEDULING - Management, Performance, and Applications of Micro Irrigation Systems - page 147

TABLE 1 Information for the example problem in this chapter.

Location Juana Diaz-Puerto Rico

Site Latitude 18.02 degrees N

Site Longitude 66.52 degrees W

Site Elevation above sea level 21 m

Crop Tomato

Planting Date 1-Jan-12

Rainfall Information A rain gauge is not available on or near the farm

Type of irrigation Drip

Approximate wetted area of the field 50%

Irrigation system efficiency 85%

Field size 10 acres

Pump capacity 300 gpm

TABLE 2 Web addresses used to obtain information for solving the example problem in this

chapter.

Length of Growth Stages (Table 11) and
Crop Coefficients (Table 12)

http://www.fao.org/docrep/X0490E/x0490e00.
htm

Daily Reference ET Results for Puerto
Rico*

http://academic.uprm.edu/hdc/GOES-PRWEB_
RESULTS/reference_ET/

Daily NEXRAD Rainfall For Puerto
Rico

http://academic.uprm.edu/hdc/GOES-PRWEB_
RESULTS/rainfall/

*The web subdirectory contains Penman-Monteith, Hargreaves-Samani and Priestly Taylor
ET o data.

Table 3 Crop growth stage lengths and crop coefficient data for the example problem in this
chapter (See Fig. 2).

Initial crop growth stage 30 days

Crop development growth stage 40 days

Mid-season growth stage 40 days

Late-season growth stage 25 days

Total length of season 135 days

K c ini 0.6

K c mid 1.15