ONAS^TM (Optimised Nutrient Application System) is, as the name imply, a program (standard procedures, software driven) to optimise the use efficiency of plant nutrients under fertigation, whether applied through drip and/or micro or pivot irrigation.

OFOS® and ONASTM consist of the following facets: 

• Specifically formulated products within a two– or three tank system 
• Computer based plant nutrition programmes 
• Proven management and control systems 
• User-friendly monitoring systems 
• Based on plant nutrient concentration (the Michaelis Menten concept) 
• Recommendations supported by science 
• Local agronomic and research support network