SUBSURFACE DRIP IRRIGATION
Subsurface drip irrigation is where a low- pressure, high efficiency irrigation system uses buried drip tubes or drip tape to meet crop water needs at the soil-root interface itself.
FULL IRRIGATION
The simplest irrigation strategy is full irrigation, i.e., irrigate to meet the full evapotranspiration needs of the plant throughout the growing season. When insufficient water is available for irrigation, a farmer can either opt for a partial irrigation to all his crop lands, or irrigate only a portion of the farm field.
SUPPLEMENTAL IRRIGATION
Supplemental irrigation is the application of water at critical growth stages where rainfall is not adequate to support the full plant growth. Provision of supplemental irrigation if the monsoon is delayed and at flowering and boll formation, can result in higher yields than the rainfed system.
DEFICIT IRRIGATION
Deficit irrigation is the practice of applying less water than the full crop water requirements. Cotton can be grown under controlled water stress (deficit irrigation) without severe negative impacts on its yield and sometimes with an improvement in the quality of cotton fibre.