What is fertigation and what are its advantages and risks in turf management?

• A. Fertigation is delivering soluble nutrients through irrigation water; advantages include precise nutrient delivery and reduced labor; risks include salt buildup, potential clogging, and need for careful monitoring.
• B. Fertigation is applying solid fertilizer.
• C. Fertigation increases pesticide use.
• D. Fertigation only applies to sports fields.

Answer: (A)

Fertigation means delivering water-soluble nutrients directly through an irrigation system so the roots receive nutrients as they are watered. This approach allows you to control what nutrients are available, when, and where they are applied, which can lead to more precise nutrient delivery, more uniform turf growth, and reduced labor compared to separate fertilizer applications. It also supports frequent, smaller applications that can improve nutrient-use efficiency and reduce runoff when managed well.

But it comes with downsides that need attention. Repeated injections of fertilizer can raise soil salinity if irrigation doesn’t move salts away, potentially stressing roots. The fertilizer salts or impurities can clog or scale irrigation emitters and injection equipment, so good filtration and regular maintenance are essential. You must monitor soil and water electrical conductivity and pH, use compatible fertilizers, and calibrate the system carefully to avoid over- or under-application and environmental losses. Fertigation is widely used in turf management, including on sports fields, but it requires careful planning and monitoring to reap the benefits while minimizing risks.