formed, place grafts in up right
position, then watering is resumed and heat is reduced to around 60
degrees at night. When graft shows two inches or more growth, cut
understock off close above the union, and then give house plenty of
ventilation to avoid soft growth.

I find nut trees very tender subjects and delay planting these
under-glass grown grafts out in nursery rows until every vestige of
frost has passed. Also be sure to sever the waxed string as this is
tougher than the green graft.

If this method sounds like a great deal of work and trouble generally,
remember the reward will be heavy rooted, easy to transplant, healthy,
named varieties of nut trees. Who can say that, at the present, there is
an abundance of such trees in this country.

The Economic, Ecological and Horticultural Aspects of Intercropping Nut
Plantings

By F. L. O'Rourke Michigan State College, East Lansing, Michigan

Mature nut trees are usually large trees, and large trees demand space.
Young nut trees, therefore, must be planted relatively far apart from
each other and for the first few years, at least, there is an abundance
of unused land between the trees, which may be used for intercropping.
The choice of just what crop or plants to use is often perplexing and
should be considered for several aspects.

The economic factors are of prime importance. The cost of growing the
crop, the specialized farm machinery and equipment needed, the
availability of labor, the distribution of the seasonal labor demand,
the time of the critical cultural practices or of harvesting, the
potential market, and the expected price of the saleable product must
all be considered.

The staple farm crops of the region are often preferable to specialty
crops, particularly from the labor standpoint. Corn, wheat, oats,
potatoes, and legumes can all be grown with a minimum of labor and the
use of power machinery. There is less risk involved with farm crops than
with specialities, both in securing an adequate crop and in the price
received for the product. Fruit, vegetables and ornamentals often have
very critical requirements. They must be sprayed, harvested, and shipped
at exactly the right time or all the proceeds will be lost. Staple crops
are not so demanding in either culture or harvesting.

The labor distribution throughout the season or even throughout the year
must be considered and well planned in advance. No two crops should
require exact a