Control Calendar For 
Vegetable Pests | 

THIS CONTROL CALENDAR is the result of combining most of the 
recommendations from the various control calendars available 
through experiment stations, agricultural colleges or extension 
services in the Exchange territory. 
We have tried to have these recommendations conform with all 
limitation and conservation orders that have been issued up to 
the time this went to the printer. New orders or amendments to 
old orders may require changes in these recommendations. We 
shall attempt to keep you informed of any changes as soon as they 
are made. 
Remember there are no substitutes for THOROUGH COVERAGE, 
TIMELINESS, GOOD EQUIPMENT, 
FIELD SANITATION — these four 
points must be considered before any spray or dust can be expected 
to give effective results. This brief calendar can serve only as a 
guide; for more specific details relative to spraying or dusting 
problems consult your state recommendations, your extension 
agent, or write the West Springfield Office 

APHIDS — Plants attacked: bean, cabbage, cau- 
liflower, turnip, radish, broccoli, Brussels sprout, 
melon, cucumber, squash, eggplant, lettuce, pea, 
pepper, potato, spinach. Control: Spray with nicotine 
sulfate, % pint, and two pounds soap in 50 gallons 
water, or dust with rotenone dust,* 4% nicotine lime 
dust, rotenone copper dust.* 
BEAN BEETLES — Plants attacked: bean. Con- 
trol: Dust with rotenone dust,* rotenone copper dust,* 
CUTWORM, ARMY WORM — Plants at- 
tacked: asparagus, cabbage, cauliflower, turnip, 
radish, broccoli, Brussels sprout, corn, pea, pepper, 
tomato, Control: Dry mix 5 pounds of wheat bran, 
% pound Paris green. Dissolve one pint molasses in 
about 3 quarts of water, add dry mixture and stir 
vigorously. The bait should be damp but not wet 
and should be broadcast at dusk, 20 pounds to the 
acre, before plants are set or just as seed is sprouting, 
ASPARAGUS BEETLES — Plants attacked: 
asparagus. Control: On cutting beds dust with 
rotenone dust.* When cutting season is over spray 
with lead arsenate or calcium arsenate, one pound in 
50 gallons of water, and add % pound goulac, or 
dust with a mixture of 20 parts lead arsenate or 
calcium arsenate and 80 parts spray lime. 
FLEA BEETLE, BLISTER BEETLE — Planis 
attacked: beet, eggplant, pepper, potato, tomato. 
Control: Dust with rotenone dust,* rotenone copper 
dust.* A spray of one pound calcium arsenate in 
Bordeaux mixture (2—2-50) is also effective. 






WIREWORM — Plants attacked: beet, carrot, 
onion, potato. Control: Late fall plowing and fre- 
quent cultivation reduce population. On small areas 
it may be economical to distribute trap baits of 
potato, and when the worms have been attracted 
kill them by hand or by soil fumigation with 
calcium cyanide, 
GREEN CABBAGE WORM, CABBAGE 
LOOPER, DIAMOND BACK MOTH, ZEBRA 
MOTH — Plants attacked: cabbage, cauliflower, 
turnip, radish, broccoli, Brussels sprout. Control: 
Dust with pyrethrum or rotenone dust.* 
CABBAGE MAGGOT — Plants attacked: cab- 
bage, cauliflower, turnip, radish, broccoli, Brussels 
sprout. Control: Soak soil about roots with corrosive 
sublimate, one ounce in 10 gallons of water and 
apply % cupful to each plant or dust roots and 
stems with calomel gypsum dust at the time of trans- 
planting and make three heavy applications around 
stem at weekly intervals. 


RUMFORD PRESS 
CONCORD.N.H, 
TARNISHED PLANT BUG — Plants atiacked: 
cabbage, cauliflower, turnip, radish, broccoli, 
Brussels sprout, celery, cucumber, melon, squash, 
onion, potato. Control: Spray with nicotine sulfate, 
one pint, and 3 to 4 pounds of soap in 100 gallons of 
water, or dust with rotenone dust.* Make applications 
3 or 4 times at weekly intervals. 
SWALLOWTAIL CATERPILLAR — Plants at- 
tacked: celery, parsnip. Control: Spray with calcium 
arsenate, one pound in 50 gallons of water, or dust 
with N-C-A dust for both this pest and blight. 
EUROPEAN CORN BORER — Plants  at- 
tacked: corn. Control: Dust with dual-fixed nicotine 
dust. Apply when borers are hatching and 3 or 4 
times at weekly intervals thereafter. Burn or plow 
under stubble and fodder in fall. Break out and 
destroy tassels while borers are still in them. 
CORN EARWORM — Plants attacked: corn. 
Control: Inject white mineral oil into tip of husk when 
silk starts to turn brown or clip off tip of husk and 
silk when silks start to turn brown, Either treat- 
ment must be done after ear has been properly 
pollinated. 
STRIPED, SPOTTED CUCUMBER BEETLES 
— Plants attacked: cucumber, melon, squash, pump- 
kin. Control: 1 lb. calcium arsenate in Bordeaux 
Mixture (2—2-50). 
SQUASH BUG — Plants attacked: Cucumber, 
melon, squash, pumpkin. Control: Spray with 
nicotine sulfate, one pint in 50 gallons of water. 
The spray is effective only on very young bugs. 
Hand pick and destroy adult bugs or place small 
pieces of board on the ground near the plants to 
serve as traps, lift boards early in the morning and 
destroy bugs. 





WEBWORM — Plants attacked: beet, parsnip. 
Control: Spray with calcium arsenate, 114 pounds, 
and 1% pounds spray lime in 50 gallons water or 
dust with N-C-A dust, 
COLORADO, THREE-LINED POTATO BEE- 
TLES, FLEA BEETLE, BLISTER BEETLE — 
Plants attacked: potato. Control: Spray with cal- 
cium arsenate, 1% pounds in 50 gallons water, or 
dust with N-C-A dust. The calcium arsenate may 
be combined with Bordeaux mixture. Apply when 
insects appear and repeat as needed. 
LEAFHOPPERS — Plants attacked: potato. 
Control: Spray with Bordeaux mixture (5—-5—50). If 
infestation is heavy, add % pint nicotine sulfate, or 
if infestation is light, dust with 20-80 or N-C dust. 
WHITE GRUB— Plants attacked: potato. 
Control: Plow in late fall. Do not plant potatoes 
following sod if grubs are numerous. 
HORNWORM, CORN EARWORM — Plants 
attacked: tomato. Control: Spray with calcium 
arsenate, one pound in 50 gallons water, Apply when 
insect appears. Hand pick on small areas. 
COMMON STALK BORER — Plants attacked: 
tomato. Control: Remove and destroy all weeds. 
Split stem with knife and destroy borer. 
GARDEN SLUGS — Plants attacked: lettuce, 
potato. Control: Use poison bait as for CUTWORM. 
GARDEN SPRINGTAIL — Plants attacked: 
beet, spinach. Control: Treat same as APHIDS. 
SPINACH LEAF MINER — Plants attacked: 
beet, spinach. Control: Destroy infested plants or 
remove infested leaves. Destroy all weeds in the 
immediate vicinity. 
Wherever rolenone copper,* 20-60-20, or N-C-A 
dust is recommended and used, the insects referred 
to, as well as the more common fungus diseases, are 
controlled. Therefore to conserve space, 20-60-20, 
N-C-A, and rotenone copper dust* will not be men- 
tioned in the following. 
EARLY, LATE BLIGHT (LEAF SPOT), 
POWDERY MILDEW, SCAB, ANTHRAC- 
NOSE, DOWNY MILDEW, FRUIT ROT — 
Plants attacked: tomato, cucumber, melon, squash, 
pumpkin. Control: Spray with Bordeaux mixture 
(2-2-50), neutral copper fungicide, 5 pounds in 100 
gallons water, or dust with N-C dust. Applications 
should be made at 10 to 14 day intervals beginning 
before the disease usually makes its appearance. 
POWDERY MILDEW, RUST — Plants at- 
tacked: pea, asparagus. Control: Spray with wettable 
sulfur, 4 to 6 pounds in 100 gallons water, or dust 
with dusting sulfur, On peas wait until mildew 
appears and repeat as needed. On asparagus make 
applications three weeks after cutting season at 
18-day intervals. 
EARLY, LATE BLIGHT (LEAF SPOT), TIP- 
BURN, CROWN ROT — Plants attacked: celery, 
potatoes, rhubarb. Control: Spray with Bordeaux 
mixture (S—5—50), neutral copper fungicide, 6 pounds 
in 100 gallons water, or dust with N-C dust, Appli- 
cations should be made at 10 to 14 day intervals 
after plants are well started. 
WILT — Plants attacked: cucumber, melon, 
pumpkin, squash. Control: Control cucumber bee- 
tles and destroy immediately all diseased plants. 
SMUT — Plants attacked: corn, Control: Remove 
and destroy boils before they burst. Practice field 
sanitation. 
ASTER YELLOWS — Plants attacked: carrot, 
lettuce. Control; Remove and destroy all weeds in 
the immediate vicinity. Control insects, especially 
LEAFHOPPERS. 
GRAY MOLD FRUIT ROT — Plants attacked: 
eggplant. Control: Remove withered blossoms when 
harvesting fruit. 
NECK ROT — Plants attacked: onion. Control: 
Control insects. Cut tops close, allowing them to 
mature completely. Cure well before storing in 
slatted crates in cool, well-ventilated room. 
MOSAIC — Plants attacked: pea, potato, tomato. 
Control: Control APHIDS, LEAFHOPPERS, and 
weeds. 
BLOSSOM END ROT — Plants attacked: pep- 
per, tomato. Control: Avoid dry locations. Maintain 
as uniform a moisture content as possible. 





















SQUASH VINE BORER — Plants attacked: 
melon, squash, pumpkin. Control: Spray with 
nicotine sulfate, one quart in 50 gallons of water. 
Apply 3 or 4 times at weekly intervals when borers 
are hatching. 
Se eee ee 
ONION MAGGOT — Plants attacked: onion. 
Control: Spray with Bordeaux mixture (4-4-50) to 
which has been added 1% gallons dormant spray 
oil. Apply 3 or 4 times at weekly intervals when 
flies appear. 
ONION THRIP — Plants attacked: onion. Con- 
trol: Spray with 34 pint nicotine sulfate and 2 
pounds soap in 50 gallons water. 
CARROT RUST FLY — Plants attacked; carrot, 
parsnip. Control: Dust with rotenone dust,* rotenone 
copper dust.* Apply 3 or 4 times at weekly intervals 
when flies appear. 


LEAF ROLL, SPINDLE TUBER — Plants at- 
tacked: potato. Control: Use certified seed. Control 
APHIDS, LEAFHOPPERS. 
DOWNY MILDEW — Plants attacked: spinach, 
Control: Avoid excessive watering and when neces- 
sary, water in the morning. 
FERN LEAF, STREAK — Plants attacked: 
tomato. Control: Destroy all weeds in the immediate 
vicinity. Control insects and isolate from tobacco 
and potatoes. 




The serious rotenone* shortage has made it 
necessary to limit the crops upon which it can 
be used. It must be used for the protection of food 
crops other than tobacco, cranberries, eggplant, 
cucumbers, melons, squash, pumpkins, onions, 
peppers and sweet corn. Therefore, on these crops 
the alternate treatment must be used. 
CO 
On 
