I’ve been doing some research but I cannot seem to find the answer to this question: can and/or should you foliar feed with fertilizers that have water-insoluble elements?
My understanding is that “water-insoluble” suggests that the element needs to be broken down in order to be available and used by the plant - otherwise known as slow-release. This would seem to me then that such fertilizers would not be efficient in the context of foliar feeding since the stoma requires readily accessible nutrients and does not have the capacity to break them down.
The reason for my question is that I purchased a fertilizer - Nitro Big - that contains 7% water-insoluble organic nitrogen. The label provides directions for foliar feeding but I want to make sure I’m not just wasting the nutes, my time, and possibly harming my plants if I spray with it. Any assistance in better understanding this issue is greatly appreciated. Thanks!
My understanding is that “water-insoluble” suggests that the element needs to be broken down in order to be available and used by the plant - otherwise known as slow-release. This would seem to me then that such fertilizers would not be efficient in the context of foliar feeding since the stoma requires readily accessible nutrients and does not have the capacity to break them down.
The reason for my question is that I purchased a fertilizer - Nitro Big - that contains 7% water-insoluble organic nitrogen. The label provides directions for foliar feeding but I want to make sure I’m not just wasting the nutes, my time, and possibly harming my plants if I spray with it. Any assistance in better understanding this issue is greatly appreciated. Thanks!