Fertilizers and soil conditioners — Controlled-release fertilizer — General requirements
2018
Document Number: NL ISO 18644 : 2018
Sector: NULL
TC: NL TC 134
ICS:
ISO 18644:2016 specifies the requirements for testing methods, sampling and preparation of test sample, marking and labelling, as well as package, transport, and storage of controlled-release fertilizer. ISO 18644:2016 is applicable to controlled-release products having one or more primary fertilizer nutrient (nitrogen and/or phosphorous and/or potassium) in a controlled-release form. They can be made by bulk blending (BB) fertilizers or by special processes.