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.
Apples and Cherries for a Hot Place.
What kind of apple do you think would do best in a dry, hot climate?
What do you think of the Early Richmond cherry in such a place?
Apples most likely to succeed in a dry situation are those which ripen
their fruit very early. The Red Astrachan is on the whole the most
satisfactory, but there are many places which are altogether too dry and
hot for any kind of apple. Whether cherries would succeed or not you can
only tell by trying. Possibly the trees would not live through the
summer if your soil becomes very dry. The most hardy cherries are the
sour or pie cherries and the Early Richmond is one of this group.
Die-back of Apple Trees.
What causes the death of the top shoots in apple trees?
New wood is sometimes diseased by mildew, but die-back is usually due to
two different causes: One, the accumulation of water in the soil during
the excessive rains of mid-winter; second, the occurrence of low
temperatures, including frosts, after the sap has risen.
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