I have a 6 year old tangerine tree giving fruit for past 3 years. Have = been fertilizing and watering per nursery advice except no ammonium = sulfate added until last year (this year adding 1 cup in spring, summer = and fall per nursery advice). Fruit is falling off again this year, as = in past 2 years - just after starting to turn color, about 2-inches = diameter. That fruit is super bitter. Throwing it in the compost pile = by the bushel this year.
It gets full sun from morning until about 3pm when shade from a nearby = tree shades it for the rest of the day. Leaves, etc, all look healthy & = no insects or diseased look. Soil test shows in the proper ranges.
I'm about out of ideas. Any ideas about what to do try?
Bob