The soil and cultural requirements and methods of growing
soybeans are essentially the same as for bush forms of common
beans. Soybeans, however, are slower growing than most garden
beans, requiring 3 to 5 months for maturity, and warmer weather.
They also are taller growing, the larger, later varieties
requiring a greater distance between rows than dwarf snap
Small, early varieties may be planted in rows as close as 2
feet, but the larger, later ones require 3 feet between rows. The
planting dates given in tables 4 and 5 are for midseason varieties
(about 120 days), neither the earliest nor the latest kinds.
Differences in time of development among varieties are so great
that the gardener must choose the proper variety and know its time
of maturity in making plans for planting in any particular
In cooler sections the rate of development will be slower. Only
the early varieties should be grown in the more northerly States,
and the medium or late varieties in the South. Plantings should be
made principally when tomatoes and other long-season, warm-weather
crops are put in the garden.
For use as a green vegetable, soybean pods should be harvested
when the seeds are fully grown but before the pods turn yellow.
Most varieties produce beans in usable condition over a period of
a week to 10 days. The green beans are difficult to remove from
the pods unless the pods are boiled or steamed 4 to 5 minutes,
after which they are easily shelled.
The yields per unit area of land are about the same as are
usually obtained with peas and are thus less than can be obtained
with many other vegetables. On this account, they appear of major
interest only to gardeners having medium to large gardens.
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