Fungicides – Foliar Treatment
517
• 
Safety - page 25 • First aid - page 33 • Resistance management - page 41
Crops, Diseases Controlled, Rates and Timing
Crops
Diseases
Rate per acre Timing and specific comments
Potatoes
Early blight, botrytis vine rot,
late blight, late blight tuber rot
and the suppression of Pythium
leak and pink rot in potatoes
One jug will treat
10
acres
Apply early in the season when conditions are favorable for
disease (before disease infection), but no later than when plant
foliage meets within the row uniformly across the field. Apply
a second and third application of Ridomil Gold/Bravo at 14-day
intervals. The label rate of a registered contact fungicide should
be applied 7 days after each Ridomil Gold/Bravo application.
Following the last application of Ridomil Gold/Bravo, apply the
labelled registered contact fungicide at its recommended timing
throughout the remainder of the season.
Do not make more than 3 applications per season, regardless of
disease being treated.
Note:
If applications of Ridomil Gold/Bravo fungicide are made for control of foliar diseases, additional applications of tuber disease control are not
needed.
Registered Tank Mixes
None registered.
Application Information
How to Apply
:
Ground and aerial application.
Water Volume
:
Ground: 91
-
647
L/acre Note: water volume varies, depending on amount of foliage.
Aerial: 20 L/acre.
Caution
:
Do not let tank contents stand for prolonged periods without agitation.
Application Tips
Do not tank mix with a top killer (crop desiccant).
How it Works
Ridomil Gold Bravo Twin-Pak contains 2 active ingredients, chlorothalonil and metalaxyl. The metalaxyl component
is an acylalanine fungicide with systemic activity. The chlorothalonil component provides contact activity.
Restrictions
Pre-harvest Interval
:
Do not apply within 14 days of harvest.
Environmental Precautions
Ridomil Gold Bravo Twin-Pak is toxic to fish. Do not contaminate lakes, streams or ponds. Do not contaminate water
by cleaning of equipment or disposal of wastes. Do not apply where runoff is likely to occur. Do not apply when
weather conditions favour drift from treated areas. In order to minimize risk to the environment from the use of this
product, do not use on coarse textured gravelly soils, soils with less than 2% organic matter or in areas where the
water table may be high.
Toxicity
Ingestion
:
Bravo has a low toxicity by single ingestion. Acute oral LD
50
(
rats) = > 4,200 mg/kg.
Dermal
:
Low
toxicity by dermal contact. Acute dermal LD
50
(
rats) = > 20,000 mg/kg.
Ingestion
:
Ridomil Gold has low toxicity by single ingestion. Acute oral LD
50
(
rats) = > 1,172 mg/kg.
Dermal
:
Low
toxicity by dermal contact. Acute dermal LD
50
(
rabbit) = > 2,020 mg/kg.
Storage
Requires heated storage. Store in a cool, dry place away from feed or foodstuffs. Protect from excessive heat.
Ridomil Gold/Bravo Twin-Pak (cont’d)