1.Identify an describe four soil factord that are critical determinants of selecting drip irrigation versus flood irrigation.
2.Describe the concept of percent normal precipitation and explain how it can be used to minimize risk in setting a yield goal .
Considering the soil N (nitrogen) pool , explain why fertilization rates woul differ between organic and inorganic N source if both contain the same percentage of total N. List the majot ions responsible for the salination of soils. 250 word limit