Hi! I have a row of 4 fruit trees (apple, cherry, lemon, plum). My young citrus was constantly yellow, I just couldn’t seem to get it enough nitrogen so my arborist suggested Ammonium Nitrate which I’ve been using for a while now (1/2 a pound a few times a year). The lemon tree is now doing great! However my plum and cherry (which are either side of the lemon) have got tons of lush growth but no fruit this year. I’m wondering if maybe the ammonium nitrate is spreading out and causing this excess nitrogen for the other trees. They are about 7.5 to 8 feet apart and they are all fairly young/small trees. When I use the ammonium nitrate I only put it under the drip line of the lemon tree.
So my questions:
Do you think the ammonium nitrate would spread out to the neighboring trees?
If yes, how can I keep up with the heavy nitrate needs for my lemon without giving the trees next door too much?
The fertilizer can spread some. It depends on lots of things. But It’s more likely that the roots of your plum and cherry trees are reaching the area where you applied fertilizer. The roots will spread past the drip line of the trees.
I thought that ammonium nitrate was banned due to it’s possible use as an explosive. Maybe you aren’t in the US.
You can do a foliar spray. But I haven’t done that so can’t give any advice. My thought is that with time the needs of all trees should be about the same. I don’t think citrus needs more than other fruits.
Nope. Some fertilizer manufacturers produce A/S + micros in a water-soluble powder, etc. Cesco btw is a chemical repackaging company.
If I were to apply this product to my citrus solely as a foliar spray, I’d use 1/4 tsp per gallon once per month. Use enough mixture to so that every leaf is dripping. Do not pour extra into the plant basin.
This is what I got to use on my blueberries that were showing some chlorosis, probably from the pH creeping up. I had seen @fruitnut talk about using AS for blueberries and got this and my plants look much happier.
Azalea fertilizer is useful for blueberries. Sometimes nitrogen alone is enough to stimulate growth. Sometimes the plant needs a more general purpose fertilizer. I use azalea mix for several acid loving perennials. It is available from most box stores.
In my area anything and everything winds up beside the road. That includes fertilizer, hay, ag lime, grains etc… Semis haul bone meal for production use. They frequently pull over and sleep beside the road. Sometimes 1000 pounds+ of bone meal is laying there. Stopped once and picked up a few 5 gallon buckets for the tomatos. The rest of the many times i leave it for animals to eat and those who need it. Nitrogen i normally buy in bulk when i need it. Made a deal with a neighbor to purchase it in quantity now. Grass uses lots of it! Thousands of pounds of it does not sound like much to me. We put it on fields at a rate of 150 pounds - 250 pounds per acre for brome. Do the math x 35 acres. The point i’m making is in my area a box car of fertilizers dont seem like much, but it is expensive! Sometimes the clover i planted years ago helps enough we can see a noticeable difference by the good it is doing. Wish everyone had clover in with the brome but it takes a little longer to dry.