HISTORIC NOTE

The publications in this collection do
not reflect current scientific knowledge
or recommendations. These texts
represent the historic publishing
record of the Institute for Food and
Agricultural Sciences and should be
used only to trace the historic work of
the Institute and its staff. Current IFAS
research may be found on the
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(EDIS)

site maintained by the Florida
Cooperative Extension Service.

Copyright 2005, Board of Trustees, University
of Florida

GULF COAST STATION I :i.IO REPORT 56-1

SUGGESTED PESTICIDE FORMULATIONS FOR GLADIOLUS IN FLORIDA <;

R. O. Magie and E. G. Kelsheimer /> ':,

Foliage Treatments ,
A. Disease Control .

1. Zineb (Dithane Z-78 or Parzate) 2 Ibs. in 100 gal. plus 4 to 6 ounces 'of
spreader such as Triton B1956.

2. Nabam (Parzate Liquid, Dithane D-14, Ortho-nabam, Thiodow, etc.) 2 quarts
plus 3/4 to 1 lb. zinc sulfate (36% zinc) in 100 gal. Add the zinc sul-
fate slowly with stirring after diluting the nabam with half of the total
water required. Add 4 to 6 ounces of spreader.

3. Maneb (Manzate or Dithane M-22) 2 Ibs. in 100 gal. plus 4 to 6 ounces of
spreader.

4. Zineb dust containing 6% active ingredient.

B. Insect Control (Add insecticides to above fungicide mixtures when necessary)

1. On new plantings, especially in autumn, make two or three applications of
1 lb. chlordane active ingredient per acre, or two or three applications
of 1/2 lb. dieldrin active ingredient per acre. (Begin applications as
soon as sprouts appear).

2. General purpose spray: DDT wettable powder, 1 1/2 Ibs. active ingredient
per acre.

3. During late winter and spring when thrips are prevalent Spray: benzene
hexachloride, parathion or chlordane spray should be used in rotation with
the DDT spray. For each acre use 2 lbs. of 10% gamma isomer of benzene
hexachloride; 1 lb. of 15% wettable parathion; or 1 lb. chlordane active
ingredient for each application. Dust: Benzene hexachloride (1 1/2% gamma
isomer), 5% chlordane, 10% DDT, 1 1/27 parathion, or 2% Dieldrin.

4. General purpose dust: 5% DDT

5. Cut-worm dust: 5% chlordane or 2% dieldrin.

6. Red spider -- Spray: 1 1/2 or 2 lbs. of 15% wettable parathion per acre;
Dust: 1 or 1 1/2% parathion dust applied at rate of 25 to 35 lbs. per
acre, or sulfur dust.

Bulb Treatments*
A. Pre-storage

1. Captan 75, 8 lbs. per 100 gal. or captain 50W, 12 Ibs. in 100 gal. Soak
bulbs 20 to 30 minutes within 18 hours after cleaning the bulbs.

2. Dowicide B, 4 to 6 Ibs. per 100 gal. in warm weather or 8 lbs. in cold
weather. Soak bulbs 20 to 30 minutes. Protect Dowicide B from air and
use it before it turns brown and lumpy. Add 1 or 2 cups of wetting agent
per 100 gal. Apply within one day after cleaning.

GULF COAST STATION I :i.IO REPORT 56-1

SUGGESTED PESTICIDE FORMULATIONS FOR GLADIOLUS IN FLORIDA <;

R. O. Magie and E. G. Kelsheimer /> ':,

Foliage Treatments ,
A. Disease Control .

1. Zineb (Dithane Z-78 or Parzate) 2 Ibs. in 100 gal. plus 4 to 6 ounces 'of
spreader such as Triton B1956.

2. Nabam (Parzate Liquid, Dithane D-14, Ortho-nabam, Thiodow, etc.) 2 quarts
plus 3/4 to 1 lb. zinc sulfate (36% zinc) in 100 gal. Add the zinc sul-
fate slowly with stirring after diluting the nabam with half of the total
water required. Add 4 to 6 ounces of spreader.

3. Maneb (Manzate or Dithane M-22) 2 Ibs. in 100 gal. plus 4 to 6 ounces of
spreader.

4. Zineb dust containing 6% active ingredient.

B. Insect Control (Add insecticides to above fungicide mixtures when necessary)

1. On new plantings, especially in autumn, make two or three applications of
1 lb. chlordane active ingredient per acre, or two or three applications
of 1/2 lb. dieldrin active ingredient per acre. (Begin applications as
soon as sprouts appear).

2. General purpose spray: DDT wettable powder, 1 1/2 Ibs. active ingredient
per acre.

3. During late winter and spring when thrips are prevalent Spray: benzene
hexachloride, parathion or chlordane spray should be used in rotation with
the DDT spray. For each acre use 2 lbs. of 10% gamma isomer of benzene
hexachloride; 1 lb. of 15% wettable parathion; or 1 lb. chlordane active
ingredient for each application. Dust: Benzene hexachloride (1 1/2% gamma
isomer), 5% chlordane, 10% DDT, 1 1/27 parathion, or 2% Dieldrin.

4. General purpose dust: 5% DDT

5. Cut-worm dust: 5% chlordane or 2% dieldrin.

6. Red spider -- Spray: 1 1/2 or 2 lbs. of 15% wettable parathion per acre;
Dust: 1 or 1 1/2% parathion dust applied at rate of 25 to 35 lbs. per
acre, or sulfur dust.

Bulb Treatments*
A. Pre-storage

1. Captan 75, 8 lbs. per 100 gal. or captain 50W, 12 Ibs. in 100 gal. Soak
bulbs 20 to 30 minutes within 18 hours after cleaning the bulbs.

2. Dowicide B, 4 to 6 Ibs. per 100 gal. in warm weather or 8 lbs. in cold
weather. Soak bulbs 20 to 30 minutes. Protect Dowicide B from air and
use it before it turns brown and lumpy. Add 1 or 2 cups of wetting agent
per 100 gal. Apply within one day after cleaning.

3. Spergon dust diluted to 24% active ingredient. Apply immediately after
cleaning.

4. Captan 50W diluted to 12% active and used as a dust. Apply immediately
after cleaning.

B. Pre-planting

1. N.I.Ceresan, 2 lbs. per 100 gal. plus wetting agent. Soak 1 minute.

2. Dowicide B, 6 lbs. per 100 gal. plus wetting agent. Soak 20 to 30 minutes.

3. For sprouted bulbs with roots: Captan 75, 8 Ibs. per 100 gal. Soak 30
minutes.

C. Pre-storage and pre-planting

1. Cleaning treatment: Captan 75, 6 lbs. per 100 gal. + wetting agent.
Pre-planting treatment: Dowicide B, 6 lbs. per 100 gal. + wetting agent.
Soak 20 minutes at each treatment.

2. Cleaning treatment: Dowicide B, 3 lbis. per 100 gal. 20 min. + wetting
agent.
Pre-planting treatment: 1 minute in N.I.Ceresan, 2 lbs. per 100 gal.
Use wetting agent to wet powder.

Bulblet Treatments -- pre-planting

1. N.I.Ceresan, 2 lbs. per 100 gal. plus wetting agent, 30 minutes.

2. Ceresan M, 2 lbs. per 100 gal. plus wetting agent, 30 minutes.

3. Arasan SF-X, 8 Ibs. per 100 gal., 30 minutes.

*Bulb treatment time can be reduced from 30 minutes to 20 or from 15 min. to 10
if a wetting or penetrating agent is used. Triton X-100 and Tergitol Dispensant
TMN are effective, but TMN should not be used with Dowicide B. If these are not
available, use the liquid, dish-washing detergents or the powders such as Dreft
and Tide. For 100 gallons of dip use 2/3 to 2 cups of detergent, depending on :":z
its penetrating power which can be determined by timing the period necessary to
wet the inner husks of bulbs with tight husks.