Models in Irrigation andWater Management - Practices of Irrigation and On-farm Water Management - page 419

ANOVA d f SS MS F Significance F

Regression 2 0.0140 0.0070 0.9705 0.4014

Residual 15 0.1084 0.0072

Total 17 0.1224

Summary results are obtained as

= − − × ×

Y 0.0369( N B ) + (1.42676 0.00052 GDD + 0.00035 R )

where

Y = predicted yield rate for the year N (say, 2012)

B Base year (the year from which the simulation data is based, e.g., for the

above case it is 1980)
and GDD, R , corresponds to year N .

=

The same procedure should be applied for each zone. The total yield of a zone is
obtained by multiplying the yield rate by the cultivated area.

Relevant Journals

- Agricultural Systems
- Precision Agriculture
- Computers and Electronics in Agriculture
- Computing in Science and Engineering
- Trans. ASAE
- Trans. ASCE
- Water Resources Management (Springer)
- Advances in Water Resources (Elsevier)
- Agricultural Water Management
- Irrigation Science
- Journal of Hydrology
- Irrigation and Drainage systems
- J. of Agrometeorology
- J. of Agricultural and Forest Meteorology
- J. of Agricultural Science

Questions

(1) What is a model? Explain the need of model.