Jim E. Shields wrote: > Potassium (K) balances nitrogen (N) approximately. Bulbs use large amounts > of both nitrogen and potassium. The phosphate (P) is not so important. I > recommend an N-P-K ratio of 20-10-20, but 20-5-20 would probably work just > as well. Bulbs use much less phosphate. > > Feed with every watering -- continuous liquid feeding is recommended. Use > N at about 100 ppm. Don't over-feed. The idea is to supply the nutrients > as fast as the plants take them up. Too much salt in the medium is hard on > the roots. > > Use a water-soluble inorganic fertilizer. Organic fertilizers, just like > ammonia and urea, encourage the growth of potentially pathogenic bacteria > and fungi. Excellent, accurate and correct. I refer to my own brief research in http://forums.gardenweb.com/forums/load/… Kind regards to all, and Compliments to Mr. Shields.