I have some orange trees in a disintegrated granite with a good many
small pieces of rock still remaining in the soil. What I wish to know is
whether it is probably something in the soil that makes them grow too
large, or is it probably the method of treatment? What treatment should
be adopted to guard against this excessive growth?
Young trees have a natural disposition to produce outside sizes of
fruit, and this is sometimes aggravated by excessive use of fertilizers,
sometimes by over-irrigation. We would cease to fertilize for a time and
to regulate irrigation so that the trees will have enough to be thrifty
without undertaking excessive growth. Such soil as you describe is
sometimes very rich at the beginning in available plant food, and
fertilization should be delayed until this excess has been appropriated
by the tree.
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