- Hickory-pecan hybrids.
- Black walnut—several varieties.
- Persian walnuts—several varieties.
- Japanese walnuts (heartnut) several varieties.
- European filbert—many varieties.
- American hazelnut—several varieties.
- Hazel-filbert hybrids—several varieties now are or soon will be available.
He can probably secure now or soon a few Chinese seedling chestnuts from the Department of Agriculture, or he can buy any year some Chinese chestnut seed.[1] By the time his trees are large enough to graft he can probably secure cions of some blight-proof oriental chestnut or hybrid.
For forage crops he can secure grafted mulberries, grafted persimmons, both native and oriental, honey locust seedlings, or honey locust seed from which to grow trees to be grafted in place a little later when good varieties are known.
The best producing oak trees within ten miles of the place of residence of most people of the United States will make interesting grafting experiments.
Interplanting Different Species
Interplanting of different species will be an important device in tree-crop farming. To provide early returns quick-maturing species can be alternated with slow-maturing.[2] To secure fertility leguminous and non-leguminous trees may be interplanted so that the non-legumes may derive nitro-
- ↑ Yokohama Nursery Company, Woolworth Building, New York City, will fill your order if placed early enough.
- ↑ The mulberry tree is a promising filler crop. It grows rapidly, bears young, and is unusually resistant to shade.
"The mulberries are in general quite tolerant of shade. This is shown not only by the fact that the trees bear fruit throughout the crown and even in quite dense shade, but also in the fact that the young seedlings are able to grow for a long time under the shade of other trees." (Letter, George B. Sudworth, Dendrologist, U. S. Department of Agriculture, Jan. 23, 1923.)
Therefore, every third tree in every third row in a mulberry orchard might be a pecan ninety to one hundred feet from its nearest pecan neigh-
