Resistant Apple Roots
A few apple trees which are almost dead from ravages of the woolly
aphis. I am going to dig them out and plant in their places other apple
trees on woolly aphis-proof root. Will it be necessary to use measures
to exterminate the woolly aphis in the old roots or their places in the
ground before planting new trees in the places of the removed trees?
It is not necessary to undertake to kill aphis in the ground when you
are planting apple trees on resistant roots. It will give your trees a
better start to dig large holes, throw out the old soil, and fill in
with some new soil from another part of the land to be planted, but it
has been demonstrated that these roots are resistant, no matter if
planted in the midst of infestation.
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