Daily national Republican. [volume] (Washington, D.C.) 1862-1866, 1865-04-29
D.a.rus,ion 81 ts..s,. IajIrioas %
VaaeaahAom.

VegetntAoms
The increase Of insects which prey upon
field and garden crops In some sections Of
the country Is q source Of constant solieituds
to the farmer. In spite Of all his efforts to
destroy them they increase in numbers from
year to year and dispute with him the pro-
ducts Of his soil. The fact has been noticed
by almost all observing farmers that upon
new ground there Is always the greatest ex-
empion from the ravages of the yermin
which are so destructive to vegetable life
For instance, the black bug upon squAshes
the onion worm, The uessian fly, the chintI
bug, and many other insect pests, seem to
increase In number from year TO year, and
frequently. defy all efforts for their sxtermi-
nation. II 10 known that the black squash
bug spends ths winter in torpid state, In
the holes Of fences and stone walls, and in
very close proximity to his summer feeding
grounds, aud that he comes forth full fedged
to renew his work of destruction upon the
tender vines early in the ensuing summer
The eggs Of many other insects are deposited
In the straw or in the ground, which has fur
nishod the parents with food and lodging du-
ring the summer, so that when Matched by
the warmth of the season the young may
find their appropriate food close at hand
Thus tho longer q piece Of ground is culti.
waited with any particular crop SO much the
moro numerous will be the insects which
prey upon II; for all the conditions being
favorable, they multiply in compound pro.
portion the longer the system continues.
Especially Is this the case upon those helds
where regular rotation is not considered
necessary to success This fact would scem
to suggest that n change Of tho crop would
prove very advantageous in all cases Thus
when piece Of land that has been allotted
TO onions for several successive years becomes
uncertain by reason Of the depredatiOns Of
tho mRggot, the readiest way 10 clean it
would seem to be TO cultivate some other
crop, ono not at all adapted TO the taste Of
the insects which occupy the ground. We
think our onion. raising friends In Marble.
head, Danyers, aud elsewhere, would have
FAR less reason to complain Of the rnvages Of
tho worm II they should occasionally alter.
nate their onion fields with tobacco; for
which crop the lands would be generally
found in most excellent condition Though
possessed Of a worry strong stomach, IL is
doubtful II m onion worm could sustain life
by chewing tobacco; and Of course the
larve Of inuumcrable multitudos would be
hntched only to perish for the want of proper
food.
LUIS view OF INC case NnuH al ample con-
hrmAtion In tho results Of thorough inyesti.
CATIONS in Europe, from statement Of which
the wheat cultiTat0rs Of the West, whose
crops are becoming more and more uncertain
every year IN consequence Of the rHvAges Of
"ths ay," may derive a lesson Of especial
advantage. In recent communication by
Mr.. Olivier, q member Of tho Institute Of
France, to the Royal and Central Agricul-
turAl Society Of Paris, n description was given
Of all the insects which live upon tho crown
or collar Of the roots Of the grain. bearing
grasses, such as wheat, rye, barley and oats
in which II was shown that they multiply
themselves without end when the same soil
presents the same crop for several years in
succession, or even crops OF analogous spe.
cies But when n crop inteTvencs upon which
those insects cannot live, ms beans, bcets,
turnips after wheat and oats, thon the whole
race Of insects perish from the fold for want
Of proper nourishmont, - ind the next year
the farmer can return his land to the ROcus.
toned tillage without apprehension that the
insects will rob him of tho proceeds Of hi
toll.
A hint Of so much practical Importance
from such source ought not to be lost upon
the farmers and market-gardone Of the Uni
ted States, who reckon as not the least Of the
difficulties with which they have to contend,
the fact that so large 4 portion Of their pro.
duco goes to the bugs" every year, in spite
Of all their efforts to prevent it.-MdSsdchW-
sets PIomghmaH.