Originally Posted by SOB
Just curious...sorry for being a little OT.
Additional nutrients may not be necessary but is it harmful? I typically only fert 2-3 times a year so is adding the extra P and K (when all it really needs is the N) a problem if the plant doesn't necessarily need it?
When I took Agriculture in University, they explained the fertilizer situation farily simple. Immagine a wine barrel, with the staves all different heights. Each stave represents one fertilizer (N, P, K, S, etc). Now fill it up with water, and the N is the shortest stave. The water is showing what the plant needs, and N being the shorteset stave, when the water gets to the to of the N, that is all that it will take up. The other taller staves are there, but the are not being used, the N is the limiting factor in the situation.
It would not be a problem to have the extra fertilizers in the ground, as long as they do not get too out of balance, as some of the fertilizers can turn to salts and cause problems, but most garden stuff is nitrogen loaded, and if that is what you are going for, there will only be a little of the other stuff left over.