es should be turned under
the season in which it has been sown will depend largely on the growth
that has been made. In many instances, the growth made is so rank as to
justify plowing it under the following autumn. In other instances,
better results will follow plowing it under the next season. It
frequently happens that the growth made is so rank that a strong plow
and also a strong team are necessary to do the work properly.

=Value on Alkali soils.=--This plant has been grown to some extent to
aid in removing alkali from soils superabundantly impregnated with the
same. It will grow, it is claimed, under certain conditions on such
soils so surcharged with alkali as to prohibit almost every other form
of vegetable growth. The extent to which it may be thus used profitably
had not yet been fully demonstrated. But where it can be grown on such
soils, the fact that it takes up and removes relatively large quantities
of alkali would appear to be well established.

=Destroying the Plants.=--Should the conditions be found so favorable to
the growth of the plant that it persists in growing where it is not
wanted, it will soon cease to appear, if prevented from going to seed.
Ordinarily, the blossoms appear only during the second year of growth.
If, therefore, the plants are cut off when in bloom, seed forming will
not only be prevented, but since sweet clover is a biennial, the plants
will die. When thus dealt with, the only source from which other plants
may come while extermination is being thus sought is from seed lodged in
the soil and still capable of germinating.

CHAPTER XII

MISCELLANEOUS VARIETIES OF CLOVER

In addition to the varieties of clover that have been discussed at some
length in previous chapters are a number the value of which may be
considerable to areas more or less local and limited. These include
Sainfoin, Egyptian clover, Yellow clover, Sand lucerne, Japanese clover,
Beggarweed and Seaside clover. Some of these, as Sainfoin and Buffalo
clover, have been in the country for several years, and yet but little
is known as to their behavior, except in very limited areas. Others, as
Buffalo clover, native to the country are thought to have merit, and yet
the degree of such merit does not appear to have been yet proved under
cultivation. The three varieties but recently introduced are thought to
have considerable promise for certain soils and climates to which they
have special adaptation, but s