Controlled-release fertilizers are a widely used method of delivering nutrients to nursery container crops.  Controlled release is just like it sounds, the fertilizers contain encapsulated solid mineral nutrients that dissolve slowly in water which are released over an extended period of time.

 

Controlled-release fertilizers (CRFs) are quite popular, but growers and researchers want ways to decrease fertilizer and irrigation expenses and reduce the impact of nutrient leaching into the environment, so a new study compares CRF placement strategies.

 

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