Ridomil Gold Plus

Manufacturer
SYNGENTA
Category
Fungicides
Registered until
2025-06-29
Registration number
51498
Active materials
Links

Controls various fungal disease on Brassica Vegetables, Cucumbers, Leeks, Grapevines, Macadamias, Potatoes, Radish, Swede, Spring Onions, Turnip and Ornamentals

DIRECTIONS FOR USE

BRASSICA VEGETABLES 
including Brassica Leafy Vegetables
Disease: White Blister Albugo candida, Downy Mildew
State: All States
Rate: 2.0 kg/ha
WHP: 14 days
Critical Comments: This use is subject to a CropLife anti- resistance strategy.
Apply at the first sign of infection. Repeat application 7 to 14 days later depending on severity of infestation. DO NOT apply more than 2 applications of RIDOMIL GOLD PLUS per year. DO NOT use RIDOMIL GOLD PLUS in consecutive plantings.
Note: Add a non-ionic surfactant to the spray mix

RADISHES, SWEDES, TURNIPS
Disease: White Blister Albugo candida, Downy Mildew 
State: All States 
Rate: 2.0 kg/ha 
WHP: 7 days
Critical Comments: This use is subject to a phenylamide anti-resistance strategy.
Maintain a regular spray program. Commence spraying early, ie before main disease infection period, with a registered fungicide from a different activity group, eg mancozeb. When conditions favour disease development apply 2 consecutive sprays of RIDOMIL GOLD PLUS at 7 to 10 day intervals and then resume the program of protectant or non-Group 4 fungicides. DO NOT wait for disease to appear.
Use the shorter interval when infection pressure is severe. Ensure thorough coverage of plants.
Note: Add a non-ionic surfactant to the spray mix

CUCUMBERS
Disease: Downy Mildew
State: All States
Rate: 2.0 kg/ha
WHP: 7 days
Critical Comments: This use is subject to a phenylamide anti-resistance strategy.
Maintain a regular spray program. Commence spraying early, ie before main disease infection period, with a registered fungicide from a different activity group, eg mancozeb. When conditions favour disease development apply 2 consecutive sprays of RIDOMIL GOLD PLUS at 7 to 10 day intervals and then resume the program of protectant or non-Group 4 fungicides.
DO NOT wait for disease to appear. Use the shorter interval when infection pressure is severe. Ensure thorough coverage of plants.
Note: Add a non-ionic surfactant to the spray mix

GRAPEVINES
Disease: Downy Mildew Plasmopara viticola
State: NSW (Riverina - MIA), Vic, Tas, SA, WA only
Rate: 
Dilute spraying: 
Before flowering 150 to 225 g/100 L water depending on severity of the disease
After flowering 225 g/100 L
Concentrate spraying: Refer to the Application section
State: Qld, NSW (except Riverina - MIA) only
Rate: 
Dilute spraying: 225 g/100 L water
Concentrate spraying: Refer to the Application section
WHP: 7 days
Critical Comments: Apply by dilute or concentrate spraying equipment. Apply the same amount of product to the target crop whether applying this product by dilute or concentrate spraying methods. This use is subject to an CropLife anti-resistance strategy.
Use in a protectant programme commencing before disease occurs. Limit the use of Group 4 fungicides to periods when conditions favour disease development.
Commence disease control sprays when the grapevine shoots are approximately 20 cm (200 mm) long and continue spraying at 7 to 21 day intervals, using a protectant or non- phenylamide fungicide (not Group 4). Use the shorter interval under prolonged humid and wet conditions. When conditions favour Downy Mildew development (prolonged humid and wet conditions) apply 2 consecutive sprays of RIDOMIL GOLD PLUS. Apply before the first sign of oil spots or as soon as possible after the infection period. DO NOT apply more than 2 consecutive sprays of a Group 4 product.
Resume the program of protectant sprays.
Apply a maximum of 4 RIDOMIL GOLD PLUS sprays per season.
DO NOT apply to grapevines in flower in Qld.
Minor phytotoxic reactions of some varieties of grapes may occur under certain conditions.
Dilute spraying: Apply to the point of runoff. Use a minimum of 500 L mixture/ha before flowering, increasing volume to a minimum of 1000 L/ha when vines are in full foliage.
Concentrate spraying: DO NOT apply with concentrations greater than 900 g/100 L.

LEEKS
Disease: Downy Mildew, Purple Blotch
State: All States
Rate: 2.0 kg/ha
WHP: 7 days
Critical Comments: This use is subject to a phenylamide anti-resistance strategy.
Maintain a regular spray program. Commence spraying early, ie before main disease infection period, with a registered fungicide from a different activity group, eg mancozeb. When conditions favour disease development apply 2 consecutive sprays of RIDOMIL GOLD PLUS at 7 to 10 day intervals and then resume the program of protectant or non-Group 4 fungicides. DO NOT wait for disease to appear. Use the shorter interval when infection pressure is severe. Ensure thorough coverage of plants.
Note: Add a non-ionic surfactant to the spray mix

MACADAMIA NUTS Field treatment of plantations
Disease: Phytophthora Trunk Canker, Root Rot
State: Qld, NSW only
Rate: 
Trunk spray and soil drench
37.5 g/L
Apply 1 to 5 L drench/tree
depending on tree size
WHP: 4 weeks
Critical Comments: Before treatment clear all weed growth from under the tree. Use the highest volume for large trees. Apply to the affected trunk and limbs, and as a soil drench to approximately 1 m2 around the base of the tree. Apply at the beginning of the summer wet season and again at 8 to 12 weeks later.
It is essential that good management practices including proper weed control, fertilisation and irrigation (where applicable) be followed to allow satisfactory response to the disease control achieved with RIDOMIL GOLD PLUS.

POTATOES
Disease: Early Blight, Late Blight
State: All States
Rate: 2.0 kg/ha
WHP: 7 days
Critical Comments: This use is subject to a phenylamide anti-resistance strategy.
Maintain a regular spray program. Commence spraying early, ie before main disease infection period, with a registered fungicide from a different activity group, eg mancozeb. When conditions favour disease development apply 2 consecutive sprays of RIDOMIL GOLD PLUS at 7 to 10 day intervals and then resume the program of protectant or non-Group 4 fungicides. DO NOT wait for disease to appear.
Use the shorter interval when infection pressure is severe. Ensure thorough coverage of plants.

Disease: Pink Rot
State: Vic, Tas, SA, WA only
Rate: 2.0 kg/ha 
WHP: 7 days
Critical Comments: This use is subject to a CropLife anti- resistance strategy.
Make the first application 4 to 6 weeks after planting to crops previously treated at planting with Ridomil Gold 25 G. Repeat application 14 days later and then apply a program of protectant or non-Group 4 fungicides.

SPRING ONIONS 
Shallots
Disease: Downy Mildew Peronospora destructor
State: All States
Rate: 2.0 kg/ha
WHP: 7 days
Critical Comments: This use is subject to a CropLife anti- resistance strategy.
Apply as a foliar spray when conditions favour downy mildew development.
Apply in rotation with fungicides from other Resistance Groups as part of a resistance management strategy.
DO NOT apply more than 2 applications of RIDOMIL GOLD PLUS per crop.

NOT TO BE USED FOR ANY PURPOSE, OR IN ANY MANNER, CONTRARY TO THIS LABEL UNLESS AUTHORISED UNDER APPROPRIATE LEGISLATION

WITHHOLDING PERIOD
Harvest
Brassica and Brassica Leafy Vegetables: DO NOT HARVEST FOR 14 DAYS AFTER APPLICATION
Cucumbers, Grapes, Leeks, Potatoes, Radishes, Turnips, Spring Onions, Swedes: DO NOT HARVEST FOR 7 DAYS AFTER APPLICATION
Macadamia Nuts: DO NOT HARVEST FOR 4 WEEKS AFTER APPLICATION
Grazing
Turnips, Swedes: DO NOT GRAZE OR FEED TREATED TURNIPS OR SWEDES FOR 7 DAYS AFTER APPLICATION

GENERAL INSTRUCTIONS
RIDOMIL GOLD PLUS is a fungicide combining both systemic and curative properties of Metalaxyl-M with the protective properties of copper hydroxide. RIDOMIL GOLD PLUS should be applied as a protective fungicide before Downy Mildew disease occurs. However, if infection has already occurred RIDOMIL GOLD PLUS should be applied as soon as possible after the infection period, preferably before oil-spots appear, to obtain optimum control of Downy Mildew.

Mixing
Fill the spray tank with ¼ of the required volume of water and start agitation. Add the required number of water soluble packs and allow them to disperse. Add the remainder of the water while continuing to agitate. Ensure the packs are completely dissolved and that the product is thoroughly mixed before spraying starts.

Application
Application in Tree and Vine Crops
Dilute Spraying: Use a sprayer designed to apply high volumes of water up to the point of runoff and matched to the crop being sprayed. Set up and operate the sprayer to achieve even coverage throughout the crop canopy. Apply sufficient water to cover the crop to the point of runoff. Avoid excessive runoff. The required water volume may be determined by applying different test volumes, using different settings on the sprayer, from industry guidelines or expert advice. Add the amount of product specified in the Direction for Use table for each 100 L water. Spray to the point of runoff. The required dilute spray volume will change and the sprayer set up and operation may also need to be changed, as the crop grows.
Concentrate Spraying: Use a sprayer designed and set up for concentrate spraying (that is a sprayer which applies water volumes less than those required to reach the point of runoff) and matched to the crop being sprayed. Set up and operate the sprayer to achieve even coverage throughout the crop canopy using your chosen water volume. Determine an appropriate dilute spray volume (see Dilute spraying) for the crop canopy. This is needed to calculate the concentrate mixing rate. The mixing rate for concentrate spraying can then be calculated in the following way:
Example only:
- Dilute spray volume as determined above: for example 1000 L/ha
- Your chosen concentrate spray volume: for example 250 L/ha
- The concentration factor in this example is: 4 x (ie 1000 L  250 L = 4)
- If the dilute label rate is 225 g/100 L, then the concentrate rate becomes 4 x 225, that is 900 g/100 L of concentrate spray.
The chosen spray volume, amount of product per 100 L water, and the sprayer set up and operation may need to be changed as the crop grows. For further information on concentrate spraying, users are advised to consult relevant industry guidelines, undertake appropriate competency training and follow industry Best Practices.
While Spraying: Continue agitation during spraying. Agitate vigorously from the bottom of the spray tank if material is left to stand.
Knapsack Sprayers: Pre-mix product before adding to the spray tank. Pour the pre-mix into the partly filled tank, adding remaining water and stir vigorously.

Compatibility
RIDOMIL GOLD PLUS is compatible with Delfin, Kocide*, Rovral*, Sanmite*, Scala*, Supracide 400, Topas 100 EC and some formulations of azinphos-methyl, chlorpyrifos, carbaryl, parathion-methyl, dimethoate, dicofol, Thiovit and other wettable sulphur formulations, and zineb. It is not compatible with Bravo and ziram. This product may not be compatible with Sumisclex*. Tank mixtures with Sumisclex should be tested prior to use.

Export Wine
Where this product will be used on grapes that will be used to produce wine destined for export markets, seek advice from the Australian Wine Research Institute or Syngenta Crop Protection to ensure the wine will meet the requirements of the intended importing country.

GROUP 4 M1 FUNGICIDE

Fungicide Resistance Warning
RIDOMIL GOLD PLUS SYSTEMIC FUNGICIDE is a combination of a phenylamide and a multi-site activity fungicide. For fungicide resistance management RIDOMIL GOLD PLUS is both a Group 4 and a Group M1 fungicide. Some naturally occurring individual fungi resistant to RIDOMIL GOLD PLUS and other Group 4 and Group M1 fungicides may exist through normal genetic variability in any fungal population. The resistant individuals can eventually dominate the fungi population if these fungicides are used repeatedly. These resistant fungi will not be controlled by RIDOMIL GOLD PLUS and other Group 4 and Group M1 fungicides, thus resulting in a reduction in efficacy and possible yield loss. Since the occurrence of resistant fungi is difficult to detect prior to use, Syngenta Crop Protection Pty Limited accepts no liability for any losses that may result from the failure of RIDOMIL GOLD PLUS to control resistant fungi.

Registered for culturesRatePreharvest Interval
Macadamia nuts0 kg28
Radishes2 kg7
Turnips2 kg7
Cucumbers2 kg7
Grapes0 g7
Leeks2 kg7
Potatoes2 kg7
Onions2 kg7