spaced trees are
grafted pecans and Persian walnuts.
2. The seedling trees which stand in good soil have made surprisingly
good growth. Some better than 8 inches diameter, breast height. One
measured tree has grown 7 feet 1/2 inch this year to date--Aug. 20. (No
fertilizer used, but cultivated.) Those which stand in shallow, thin
soil are dwarfs, worthless. Walnuts have deep taproots. They need deep,
rich earth.
3. Trees grown from planted seed make the best timber trees. Upon the
other hand, if production of known quality is the primary objective,
grafted trees of known varieties must be planted. The seedling _of good
parentage_ is an exciting gamble. It may be, and usually is a
commonplace producer of nuts. Upon the other hand, it is more likely
than the tree of poor parentage to win a place among the named
varieties, set aside for propagation by budding or grafting upon other
stocks.
4. Walnut seedlings like human beings tend to show marked inherited
trends, erratic and undependable though they may be. Thus, seedlings
grown from vigorous and upright trees _tend_ to be vigorous and upright.
Conversely, trees of poor parentage, either as timber or nut producers,
will tend to reproduce the poor characteristics of their parent. This is
more markedly true where the parent tree stands isolated from the pollen
of other walnut trees of the same species.
5. I have found no real evidence that walnuts of our planting are toxic
to other trees standing immediately beside them. To test this, we
planted a few apple, peach, and plum trees in the walnut rows. They
still stand literally arm in arm. This is, of course, all wrong. No tree
should be so crowded. The apple trees monopolize space by excessive
lateral growth. The plums send up unwanted shoots from their roots. The
peach trees are passing out. Two or three of the apple trees are half
dead. Others still live, but I am not very hopeful that, after the
walnut trees are more mature, any of the apples will survive. The usual
diseases and insects, plus shading by the walnuts seems to account for
most if not all of the dead trees to date.
6. Grass growth is excellent right up to the trunks of all of the trees.
It has never been necessary for us to lose the use of the land upon
which the trees are planted. While the trees were young, of course, no
pasturing was permitted. The land between the rows was cultivated. In
these strips we raised berries and other crops. Now that
|