We bought this tree and planted it Sept 2007 from The Edible Nursery. It is in our yard and has been kept clear of grass 3 feet out from base and is about 5 feet tall now. Sunnyland Citrus Food 6-4-6 was used Sept, Feb, Apr. 6-4-6. Milorganite every mo 6-2-0, Sunnyland Bloom Feb only 2-10-10. There is no mulch just bare ground 3 feet out. We have kept our yard weed and feed back from the tree 10 feet. In March the leaf minors started. We were told to spray with Neem or melathine. We have only used Neem. Also we have used insecticidal soap sprays alternated with the Neem later in a week. The leafs also showed a cotton web thick matter in the folds. Also had leaves to curl up or fold. Then the start of yellow veins appeared. Leaf drop has been going on steadily for two weeks now. Finally this week we were told the Epso Grow(I assume this is epson salts) was not just for lemons and limes as shown on the instruction sheet. We had mistakenly misunderstood and never used epson salt. This was started last week. The horticultural advisor said we were using the Neem too often. My husband was spraying at the sight of new leafs with leaf minors attacking before they could even grow to any size regardless of the fact we had sprayed the underneath and overtop and down every spray time of the older foilage and was doing so up to three times in a month total with appearance of new leaf problem. We were told we were doing this too often regardless of new leafs having the leaf minors and should not spray that often. We do have reclaim water. We have had a drought up until two weeks ago and have watered yard twice a week. The tree is in direct line of the sprinkler approx out 8 feet from the sprayer. At this point all we know to do is to take a sample of our lawn dirt, 2 cups, from about 3 feet out from the tree. Also a bottle of reclaim water for testing. Has our ponkan tangerine fertilizer been leached by the sprinkler system? Is the absence of epson salts another severe error? Because of not being able to get this problem taken care of, we have decided not to buy a second tangerine tree. Please give us advice for the above problems so we can begin the correct procedures. Thank you.