fertiation

1. Fertigation
 Application of fertilizer materials via the irrigation system.
 Fertigation is a process in which, fertilizer is dissolved, diluted and
distributed along with water in drip or sprinkler irrigation system.
 In other word, fertigation is the process of application of water soluble
solid fertilizer or liquid fertilizers through micro irrigation system.
Why we needfertigatin
 Uneven growth in fertilizer consumption resulting in state-wisecrop-wise
variation in consumption.
 Mining of nutrients fromthe soil at alarming rate (soilfertility depletion due
to inadequate and imbalanced fertilizer use).
 Decline in crop responseto fertilizer.
 Stagnation in fertilizer production.
 Weakening relationship between fertilizer useand food grain production.
 Increasing dependenceon fertilizer imports.
Objectives of fertigationinmicroirrigation
• Maximize profit by applying right amount of water and fertilizer at right
time.
• Minimize adverseenvironmental effects by reducing leaching losses of
fertilizers and other chemicals below the root zone.
Advantages
 Relatively uniformfertilizer applications and distribution
 Flexibility in timing of application
 Less fertilizers used and minimum nutrient loss
 Reduced costs, savelabour and energy
 Even distribution of nutrients throughoutthe root zone
 Reduced energy demand
Disadvantages
 Potential contamination hazard from equipment malfunctions
 Backflow prevention devices required
 Careful handling of liquid fertilizer required
 May requireexpert design and installation

2. Fertigation