THE CHINCH BUG! AND ITS CONTROL. 
CONTENTS. 
Page. Page. 
Amount) of damage ===). 2+ — 3 | Control measures—Continued. 
How the chinch bug injures crops__ 4 Higuipments =e = eee ee 16 
Where the chinch bug occurs______~_ 4 The season’s campaign_--_____-_~_ 27 
How to know the chinch bug__-_~_~_ 5 Trap strips between winter quar- 
SUE is hn te ee 5 ters and hwhed eee 22 = 3 Fek_ 28 
neler re Aaa Se Se 7 Trap strips between wheat and 
UNTO V0) 10 4e ee ee, ene ee ae ii COTES Sa oe a hl a oe 28 
HooOmplantnm= eee ae See SS 8 Spraying the bugs in wheat______ 29 
Hofer bistonyee =e se ok Set 9 Spraying the bugs in corn and 
Wintemanarterse = S244. t. 9 trapicrepss=— ~ 322+ bs bs ee 29 
MEST SOUS ae ee ee ee 10 Substituting nonsusceptible crops 
(GENeTatOns ses Soe eek 11 for corn and sorghum_________ 3l 
Conditions favoring outbreaks_____ 12 Operation of barriers___-______-- 31 
IMENT EMM Cera y Aafo) ea a 12 Plowing the bugs under in wheat 
Natural controls not dependable__ 12 Stubble and} corn= 22 S 33 
LDCS ee ee a 3.-|, Cooperation, == S222— 2" eee 33 
Predacious and parasitic enemies_ 14 
Controlimeusures= + 82st! Deer 15 
Measures must be adapted to the 
Gong tions es = Se. See 15 
AMOUNT OF DAMAGE. 
BOUT the year 1783 wheat crops were destroyed by the chinch 
bug in Orange County, N.C. In 1785 it had so spread and in- 
creased that the total destruction of wheat was threatened. For four 
or five years it spread and increased in North Carolina and Virginia, 
causing great loss both to wheat and corn. About 1809 the damage 
was so intense in Orange County, N. C., that wheat growing was 
abandoned for two years, with the result that the pest was subdued. 
In 1839 it was again very destructive in Virginia and the Caro- 
linas, completely wiping out oats and wheat, except an especially 
early maturing variety, and severely damaging corn. In 1840 it 
became destructive to wheat and corn in Illinois, breaking out again 
in 1844 and 1845. It was destructive in Iowa in 1847 and in Indiana 
in 1848. In 1854 it was a scourge in Illinois, Indiana, and Wiscon- 
sin, and continued to be destructive in Illinois till 1858. 
The outbreak of 1863-1865 in Illinois was estimated to have caused 
the loss of about 30,000,000 bushels of wheat (three-fourths of the 
crop) and 138,000,000 bushels of corn (one-half of the entire crop), 
the cash loss being computed at $73,000,000. 
1 Blissus leucopterus Say; order Hemiptera, family Lygaeidae (Myodochidae). 
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