Which is the best fertilizer for childish avocado plant? i red that you have to rework fertilizers depending on the season...

i red that you have to rework fertilizers depending on the season can anyone give me more info around this? and i red that different people use different fertilizers, and some those don't use any, but which one is really the best? some people use tomato fertilizer (so weird) or is it fitting for avocados? is it nessesary to use couple different ones depending on the season, and which is better the liquid one or the dry ones? i live contained by england.
Answers:    For young plants/trees:
http://www.crfg.org/pubs/ff/avocado.html
(lots of apt information on this link)

"Fertilization: Commence feeding of infantile trees after one year of growth, using a balanced fertilizer, four times per annum. Older trees benefit from feeding beside nitrogenous fertilizer applied in deferred winter and early summer. Yellowed leaves (chlorosis) indicate iron not as much as. This can usually be corrected by a chelated foliar spray of trace elements containing iron. Mature trees often also show a zinc defect." (check with a nursery clerk for a in proportion fertilizer).



For grown trees:
http://en.allexperts.com/q/Trees-739/Avo...

"Nitrogen and potassium are necessary to produce immense high feature fruit. A 10-5-20 fertilizer is generally used after trees switch on to bear fruit to provide the needed nitrogen and potassium. 3 or 4 applications per year at a rate of 4-5 lbs per tree but, not to exceed 20 lbs per tree per year. Spread around the tree and dampen into the ground. Check with your local nursery/garden type store and they should own this fertilizer."

More information for you:
http://www.tradewindsfruit.com/avocado.h...