leTh /i:/ AGRICULTMRAL RE8WMCH CF2NT
NAASTRa pB, r X-IDA
This '~tn ga ARC Riesearc~h Repcwt p9-1977-i
CON1 AND SOBRO 110 (imOL IN THE RiATINUB
R. U. Vot-m; 45@.A utomo ogist
BAma D MuTg _u ~91A MW AT L
r -of. (
Aray'wowri, PPra&oga 6B a1/ ] pt. + Apply to run into bud whorls.
Corn To uphene 1 1/2 ptA. Swrse help. Small larvae
earwori, PsO tho 9 12 pt a e easiest to kill. Plant early
(budsosj Mar r at
Lesser eorn- O t A .pply ir 1-in. band in front
stalk borer i i ib.b of press wheel at planting. No
effective o ntrol after plants
Arwornam, PWas igo ft 1/2 Vt.
Corn Purthiea g 1/4 pt ,
earworm, oiarsheae 9 1 1/2 pta.
Sorghum Toxaqbee 88 1 qt.
webwcrm evin 8Nt. J 4* 1/2 u _.
Sorghum DiasinoM 12 it4 Apply when of the heads
midge Ethian )a 1/2-1 pt. have emerged from the boot and
Parahion 1/4 pt. before blooming. Repeat in 3-5
Sevin 80 2 1/2 bo. 4.ys if adults are still active.
Restrictions and ULimtations
Diazinon--T days for orghum grain. No time limit (NTL) for sorghum forage.
Ethion--30 daye of harvest or feeding forage. No more than 3 times per season.
Parathion 8E--12 days of harvest or forag e cutting for corn and sorghum.
Parathion 6-3E--12 days of harvest or fbrC for corn. Not labeled for sorghum.
Sevin--NTL for corn. 21 days for sorgh: grain. UTL for sorghum forage.
Toxapbene--Do not feed aor forage t dairy animals or animals.being finished for
slaughter. Sorghum-28 days of harvest. Do not apply more than once after heads
start to form. Do not graze dairy antaOi or animals being finished for slaughter
on treated fields. Do not ensile treated orage.
SORIPKUM MIDGE: Adult midges are oreae flies about 1/12 in. long. Unless .numerous,
they are difficult to detect. lTey fly about the nwwly emergeb heads to ler eggs
being most common during the morning sad evening hoIu. Depending on variety, the
spikelets are receptive to egglaying up to 10 dAr following head emergence. The
larval maggots feed on the devel.piag seed casing blighted eads. Two sprays, 3-5
days apart ea above, will give protection.
'_- .` CjiM, 4ALK BORER: Green orms about. 5/8 in. long with brown stripes and head
... th' .' e of the plant, often, killing it. Dirt-eovered silk tunnels are
conritructed near the plant in the soil. Crope including sorghum, greaes, and cow-
peas on dry sandy soils are damaged most
..' r ?: S inkbugs often cause damage to COrne kerls by suacing Juices out
through the husk. Damaged kernels are Shriveled and black or missing at harvest.
Sorghum heads sustain damage also. Sprays for other insects will'control stinkbugs.
SP:LA1T EARXLY Early plantings often Escape the heavy insect damage common later in
eth' easr from about mid-June on.