Note:

1. Soil type: Soil characteristics play an important role in irrigation scheduling and runtime. The sandy soil tends to hold less water than loamy soil. Select this parameter after knowing your soil type.


2. Effective Root Depth/Root Zone: It is a soil depth from which the plants take nearly 80% of their water needs. Roughly it may only extend a third as far as the deepest roots. In general vegetables are short rooted, about 30-60 cm; fruit trees, cotton and some other plants have medium root depths 80-120cm. This parameter is useful in determining the irrigation depth.


3. Dripline Spacing: It is a spacing between the driplines.


4. Emitter Spacing: It's a distance between the emitters in a row.


5. Emitter Flowrate: Drip emitters are designed to work at specific flowrate. Usually, the dripping rate varies in between 2-16 LPH.


6. Canopy: It is the ratio of irrigation area to the total field area. It varies in the range of 0.2-1.0.


7. Climatic Conditions: Climate characteristics play an essential role in the crop evapotranspiration (Et) and therefore affect irrigation scheduling (i.e: Hotter region requires more frequent irrigation than the colder region).