PEST and DISEASE CONTROL CHART 

INSECT CROP 
Red Spider Any 

Thrips Any, inside 
; or outside 
| Gladiolus 
a Bulbs 
4 
BB Aphids Any 
“Leaf roller 
Mum midge 
| White fly 
Any 





Leafhopper 
Ants, Scale 
Tarnished 
plant bug 

Aealybugs Any 

Any 





at, i 
leafminer 
and Foliar 
‘nematode 
Cx. 
Die 
Chrysanthe- 
mum 

Rose midge 

Rose 
and Straw- 
WM berry root 
worm 
LL 
Mite Begonia 
\ Cyclamen 
Hydrangea 
Ivy 
Saintpaulia 
Snapdragon 
LS 
Root nema- Any 
todes 





CONTROL MEASURES 
Parathion bomb, spray, 
or dust. 
TEPP bombs or sprays. 
Dithion bombs. 

Sodium selenate on tol- 
erant crops. 
Rotenone sprays. 
Parathion, benzene hexa 
chloride, DDT. 
5% DDT dust, corrosive 
sublimate, formaldehyde, 
Lysol. 

Parathion bomb, spray, 
or dust. 
Dithion bomb. 
TEPP bomb or spray. 
Benzene hexa chloride. 
Nicotine and soap spray 
or nicotine fumigation. 
DDT or Parathion. 
Parathion bomb or spray. 
TEPP spray. 
Chlordane. 
Snarol. 

Sodium selenate, nico- 
tine 1-200 and soap, 
parathion dust. 

DDT. Three sprays of 
wettable powder on 
plants, soil, and walks 
12 days apart. 
Parathion. 
Parathion spray. 

TEPP sprays. 

Sodium selenate. 

Nicotine and 
soray. 
soap 

Steam sterilize soil and 
pots. 

DD (not DDT). Dow 

MC-2. Larvacide. 





REMARKS 
Parathion in the pres- 
ence of sulfur causes 
leafdrop on roses. 
Kills adults only. 

Carnations, mums, snap- 
dragons, asters, cycla- 
men, and Saintpaulia. 
Rotenone less effective 
than above and oil may 
cause damage. 

DDT and Parathion in- 
jure Kalanchoe. 

Bulb disinfectants. 
Chlordane for ants. 
Dithion bomb for scale. 
Repeated applications 
necessary. 
Use Santomerse 1-2000 
as a spreader. 



Pinch and destroy heav- 
ily infested shoots. To- 
bacco mulch not needed. 
Bomb not effective when 
pests are in the soil. 
Several applications nec- 
essary. 

Avoid undue wetting of 
soil with spray. 
Not safe on begonia, 
not effective on ivy. 
Regular spraying neces- 
sary. 


DISEASE 
Stunt 
Chlorosis 
Mosaic 
Damping off 
Black spot 
Mildew 
Alternaria 
and Septoria 
blight 
Rust 
Root rot and 
Soft rot 
Botrytis 
blight 
Leafspot 
(bacterial 
and fungus) 
CROP 
Chrysanthe- 
mum 

Azalea 
Gardenia 
Hydrangea 
mum 
Snapdragon 
Any 
Any 
Roses 
mum 
Ivy 
Calendula 
Chrysanthe- 
mum 
Hydrangea 
Rose 
Saintpaulia 
Carnation 

Aster 
Carnation 
Snapdragon 
Calla 
Lily 
| Aster 
Azalea 
Begonia 
Carnation 
Chrysanthe- 
mum 
Cyclamen 
Gardenia 
Geranium 
Hydrangea 
Ivy 

CONTROL MEASURES 
Diseased stock; buy 
stunt-free plants. 
REMARKS 
Virus disease. 

Re-establish root action 
and apply iron sulfate 
at 1 oz. per 2 gal. Acid 
peat desirable in soil 
May be caused by 
high pH, over-water- 
ing, root nematodes, 


Chrysanthe- 
Chrysanthe- 

Snapdragon 
symphylids. 
mixture. 
Soil testing is useful 
in preventing this. 
If caused by high ni- 
trates, leach or apply a 
mulch of chopped straw 
or ground corn cobs. 
Destroy badly infected |Sometimes called yel- 
plants. lows. Spread by aphids 
and leafhoppers — 
keep them under con- 
trol. 
Arasan. Treat seeds. Dust in- 
Fermate. fected areas to pre- 
vent spreading. 
Steam sterilize soil mix- 
ture, or treat soil with 
Formacide. 

Regular spraying nec- 
essary. 
1 Ib. Fermate per 100 
gal. with Santomerse 
S 1-2000; Fungtrogen. 
1 Ib. Fermate, Parzate, 
or Zerlate per 100 gal. 
with Santomerse 
S$ 1-2000. 
Often bleaches flow- 
ers. PARATHION AND 
SULFUR MAY CAUSE | 
DAMAGE. 
Wettable sulfur sprays. 
Sulfur dusts. 

Greenol, Fungtrogen, 
Grape and Rose Dust, 
Malachite green. 
1-2 Ib. Fermate, Parzate 
or Zerlate per 100 gal. 
with spreader every 2-3 
weeks in houses, and 
every 7-10 days in field. 
Avoid overhead 
inging. 
syr- 
PARATHION AND 
SULFUR MAY CAUSE 
DAMAGE. 
Fermate or Zerlate 
sprays. Sulphur dusts or 
sprays. 
Two ounces of wettable 
Spergon in 1 gal. water; 
soak for 3 hours. 
1 Ib. New Improved 
Ceresan to 50 gal. wa- 
ter. Soak 1 hour and 
plant. Formaldehyde 
1-50 for 1 hour. 
Steam sterilize 
and soil. 
pots 
Fermate or Zerlate 
sprays. 
Avoid overhead 
inging. 
syr- 
Fermate, Parzate or| Discard badly infected 
Zerlate sprays. Avoid | plants. On English ivy 
overhead syringing,|it is reported that 
give plenty of space | keeping soil at pH 5.0 
and air. reduces leafspot. 

Compiled by 
OHIO FLORISTS ASSOCIATION 


