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Take the guesswork
out of disease control

Use The Prosaro Scale
Prosaro brandtag

Prosaro® 420 SC Foliar Fungicide

Prosaro 420 SC is a protective and curative fungicide that offers a very broad spectrum of disease control in canola, wheat, barley, oats, triticale and pyrethrum. Prosaro 420 SC is designed specifically to provide effective and long-lasting broad spectrum foliar disease control, combined with excellent curative (kick-back) activity. It's application timing is flexible, so you can target Prosaro applications to effectively manage specific diseases at the most appropriate development stage.

Product Type
Fungicide
Active Ingredient
prothioconazole 210 g/L
tebuconazole 210 g/L
Formulation Type
Suspension concentrate
Pack Size
10 L
Chemical Group
3

Key Features

Prosaro is a post-emergent foliar fungicide 

Registered for use in canola, wheat, triticale, barley, oats and pyrethrum.

A specifically designed formulation   

That provides effective and long-lasting broad spectrum foliar disease control

Prosaro is the most effective foliar fungicide registered in Australia

For the control of sclerotinia stem rot in canola and is the only foliar fungicide registered in Australia for the management of blackleg in canola

Excellent performance against “hard to control” foliar diseases

Such as barley net blotch and leaf scald

Crop Suitability

Application Usage Notes
Barley Net form net blotch all states
Barley Spot form net blotch all states
Barley Powdery mildew all states
Barley Leaf scald all states
Barley Leaf rust all states 
Oats Stem rust all states
Oats Leaf rust all states
Oats Septoria blotch all states
Wheat Stripe rust all states
Wheat Stem rust all states
Wheat Leaf rust all states
Wheat Fusarium head blight/head scab all states
Wheat Yellow leaf spot all states
Wheat Septoria nodorum-glume blotch all states
Wheat Powdery mildew all states
Triticale Stripe rust all states
Canola Blackleg all states
Canola Sclerotinia stem rot all states
Pyrethrum Ray blight Victoria, Tasmania
Pyrethrum Sclerotinia crown rot Victoria, Tasmania

Compatibility

Product Comment
2, 4-D Ester 680 Physically compatible. pH 5.1
Achieve® 400 WG Physically compatible. pH 6.94
Affinity® 400 DF Physically compatible. Constant agitation required. On standing, settlement will occur. Affinity granules are slow to disperse and suspend. pH 7.18
Affinity 400 DF + MCPA® 500 SL Physically compatible. Constant agitation required. On standing, settlement will occur. pH 7.09
Affirm® + Agral® Physically compatible. pH 6.57
Agral + Transform Physically compatible. pH 6.90
Agritone® 750 SL Physically compatible. Constant agitation required. On standing, free oil present. pH 7.36
Ally® 600 WG Physically compatible. Constant agitation required. On standing, settlement will occur. pH 7.19
Ally 600 WG + MCPA 500 SL Physically compatible. Constant agitation required. On standing, settlement will occur. pH 6.85

Ally 600 WG + MCPA LVE 500 EC

Physically compatible. Constant agitation required. On standing, settlement will occur. pH 6.27
Amicide® 625 SL Physically compatible. Constant agitation required. On standing, free oil present. pH 7.75
Astound Duo® Soft water mix stored at 4°C overnight, difficult to resusupend. Constant agitation required - on standing, free oil present. pH 7.75
Atlantis® OD Selective Herbicide Physically compatible. pH 6.69
Axial® 100 EC Physically compatible. pH 7.38
Buctril® MA Selective Herbicide Physically compatible. pH 6.9
Cadence® 700 WG Physically compatible. pH 7.54
Cheetah® Gold Selective Herbicide Physically compatible. Trials indicate no significant increase in crop discolouration or biomass reduction when used as recommended. pH 7.0
Coptrel® 500 SC Physically compatible. Constant agitation required. On standing, settlement will occur. pH 8.76
Crusader® 30 OD Physically compatible. pH 6.79
Decis Options® Insecticide NOT compatible in soft water at 4 degrees celcius. Compatible in soft and hard at ambient temperature, and also in hard water 4 degrees celcius. Constant agitation required. On standing, irreversible settlement will occur. pH 7.3
Decision® Selective Herbicide Physically compatible. pH 7.0
Dimethoate 500 EC Physically compatible. Trials indicate no significant increase in crop discolouration or biomass reduction when used as recommended. pH 6.5
Dominex® 100 EC Physically compatible. Constant agitation required. On standing, settlement will occur. pH 6.07
Fastac® Duo 100 EC Physically compatible. Constant agitation required. On standing, settlement will occur. pH 5.75
Fenitrothion® 1000 EC Physically compatible. pH 6.41
Flexi-N® Physically compatible. Constant agitation required - on standing an oil layer forms on top. pH 7.6. Flexi-N added last - pH 7.04
Flexi-N + Hasten® Physically compatible. Constant agitation required - on standing separation/settlement will occur. Flexi-N added last. pH 7.06
Flexi-N + Platinum® + Hasten Physically compatible. Constant agitation required - on standing separation/settlement will occur. Flexi-N added last. pH 6.96
Gesaprim DF + Hasten Physically compatible. Constant agitation required - on standing settlement will occur. Gesaprim settles and Hasten separates on standing. pH 7.52.
Hasten Physically compatible. pH 7.2
Hotshot® 750 Physically compatible. pH 6.45
Igran® 500 EC Physically compatible. Constant agitation required. On standing, settlement will occur. pH 7.28
Jaguar® Selective Herbicide Physically compatible. pH 6.94
Karate Zeon® 250 CS Physically compatible. Apply spray mix promptly. Do not store overnight. Constant agitation required. - on standing product will IRREVERSIBLY settle out. pH 7.18
Le-mat® 290 SL Physically compatible. Soft & hard water mix stored at 4°C overnight, difficult to resuspend. Constant agitation required - on standing separation/settlement will occur. Soft & hard water at ambient temp is compatible - pH 6.20
Logran® 750 WG NOT compatible in soft water at 4°C. Compatible in soft and hard water at ambient temperature, also compatible in hard water at 4°C. Constant agitation required - on standing, irreversible settlement will occur. pH 6.4
Lontrel® 300 SL + MCPA 500 SL Physically compatible. Constant agitation required. On standing, free oil is present. pH 6.05
Lontrel 750 SG Physically compatible. pH 6.9
Lorsban® 500 EC Physically compatible. pH 7.32
Maldison 500 EC Physically compatible. pH 7.54
Mantrac® Physically compatible. Constant agitation required. On standing, settlement will occur. pH 7.73
MCPA 500 SL Physically compatible. Constant agitation required. On standing, free oil present. pH 6.53
MCPA 500 SL + Affinity 400 DF Physically compatible. Constant agitation required - on standing, settlement will occur. pH 7.09
MCPA 500 SL + Ally 600 WG Physically compatible. Constant agitation required - on standing, settlement will occur. pH 6.85
MCPA 500 SL + Lontrel 300 SL (+ Hasten) Physically compatible. Constant agitation required. On standing, free oil present. pH 6.05
MCPA LVE (+ Hasten) Physically compatible.
MCPA LVE 500 EC + Ally 600 WG Physically compatible. Constant agitation required - on standing, settlement will occur.
Pirimor® 500 WG Physically compatible. pH 7.4
Platinum® Physically compatible. Constant agitation required - on standing, separation/settlement will occur. pH 6.27
Platinum + Flexi-N + Hasten Physically compatible. Constant agitation required - on standing, separation/settlement will occur. Flexi-N added last. pH 6.96
Precept® Selective Herbicide + Uptake® Physically compatible. pH 4.29
RoundUp Powermax Physically compatible. pH 4.90
Select® 240 EC Physically compatible. Constant agitation required - on standing product will IRREVERSIBLY settle out. Do not store overnight. pH 6.17
Starane® Advanced + MCPA LVE Physically compatible. pH 7.00
Starane® Advanced + Uptake Physically compatible. pH 7.20
Success Neo + Uptake Physically compatible. pH 6.93
Surpass® 300 SL Physically compatible. Constant agitation required. On standing, settlement will occur. Trials indicate no significant increase in crop discolouration or biomass reduction when used as recommended. pH 7.28
Talstar® 250 EC Physically compatible. pH 6.47
Tigrex® Selective Herbicide Physically compatible. Trials indicate no significant increase in crop discolouration or biomass reduction when used as recommended. pH 6.56 (or 5.9)
Topik® 240 EC Physically compatible. pH 6.8
Tordon® 242 EC (+ Hasten) Physically compatible. Constant agitation required. On standing, settlement will occur. pH 7.30
Tordon 242 + Ally + BS 1000 Physically compatible. Constant agitation required - on standing product will IRREVERSIBLY settle out. Do not store overnight. pH 7.03
Tordon 75 - D SC Physically compatible. pH 6.68
Torpedo® SC Physically compatible. Constant agitation required. On standing, free oil present. pH 6.84
Transform® + Agral Physically compatible. pH 6.68
Tristar® Advance Physically compatible. Constant agitation required. On standing, settlement will occur. pH 7.15
Trojan® 150 CS Physically compatible. Apply spray mix promptly - do not store mix overnight. Constant agitation required - on standing product will IRREVERSIBLY settle out. pH 7.04
Twin Zinc® 718 SC Physically compatible. Constant agitation required. On standing, settlement will occur. pH 8.03
Uptake Physically compatible. Constant agitation required. On standing, settlement will occur. pH 7.15
Uptake + Eclipse 100 SC Herbicide Physically compatible. Soft water stored at 4°C overnight, difficult to re-suspend. Constant agitation required - on standing, separation/settlement will occur.
Uptake + Success Neo Physically compatible. pH 6.93
Urea Ammonium nitrate Physically compatible. Constant agitation required - on standing settlement an oil layer forms on top (+ Hasten).
Velocity® Selective Herbicide Physically compatible. pH 6.10
X-Pand® WG Physically compatible. Constant agitation required. On standing, free oil present. pH 7.24

Downloads

Prosaro 420 SC Product Label

Prosaro 420 SC Foliar Fungicide SDS

Prosaro 420 SC - Factsheet: Stripe Rust (Wheat)

Prosaro 420 SC Fungicide delivers outstanding performance against stripe rust

Prosaro 420 SC - Checklist: Blackleg (Canola)

Prosaro 420 SC - Compatability table (Canola and Cereals)

Prosaro 420 SC - Factsheet: Blackleg Control (Canola)

Prosaro 2014 canola fact sheet for blackleg control

Prosaro 420 SC - Product Guide: Canola

Prosaro 420 SC - Factsheet: Sclerotinia (Canola)

FAQs

Question Answer
1 What effect does Prosaro have on the retention of green leaves of the crop? Due to the exceptional disease control provided by Prosaro, excellent green leaf retention may be noted after the use of the product. A higher percentage of leaves undamaged by disease results in a prolonged growing period and thus assists the crop to reach its full potential. For more information, please refer to the product guide.
2 What is the recommended crop growth stage for applying Prosaro 420 SC in canola for blackleg and sclerotinia management? The GRDC canola management guide for south-eastern Australia divides canola crop growth stages into six separate phases. Stage 0 [0.0 - 0.8] Germination and emergence, Stage 1 [1.0 - 1.2] Leaf production Stage 2 [2.0 - 2.2] Stem elongation Stage 3 [3.0 - 3.9] Flower bud development Stage 4 [4.1 - 4.9] Flowering Stage 5 [5.1 - 5.9] Pod development Blackleg: Apply at the 4 to 6 leaf of the crop (Stage 1) of blackleg susceptible varieties (blackleg ratings of MS or lower) or other varieties in situations of high blackleg risk. Will reduce lodging and stem canker from blackleg. A follow up application may be required at green bud of the crop (Stage 3) in high disease risk situations or where an effective blackleg seed treatment has not been used. Increased blackleg risk can be expected in higher rainfall districts (above 500 mm annual rainfall), where crops are grown within 500 m of a previous year’s canola stubble and in later sown crops (May to August). Other factors will also increase the risk of blackleg infection, including the intensity of canola cropping in a district, rainfall before sowing and the frequency of growing the same canola cultivar. Consult industry guidelines for more detailed assessment of blackleg risk in specific situations. Up to two sprays of Prosaro may be applied per season to the crop. Sclerotinia: Apply at 20 to 50% flowering of the crop “full bloom” (Stage 4). For best results apply as a preventative application at 20-30% flowering prior to significant disease expression. Good coverage throughout the entire canopy is essential. Using a water rate at the higher end of the range (ie, 100 L/ha for ground application and 30 L/ha for aerial application) will improve spray coverage. Apply the higher rate (450 mL/ha) under high disease pressure
3 Do I need to add a surfactant/wetting agent when applying Prosaro? The use of an adjuvant when spraying Prosaro depends on the crop that is being sprayed and disease that is to be treated. With some diseases, benefits in efficacy may be gained from addition of Hasten® or a range of alternative adjuvants to the spray mixture. In general, the treatment of diseases in canola or pyrethrum, powdery mildew in barley and yellow leaf spot in wheat do not require the addition of a wetting agent. For more information about the use of adjuvants with Prosaro, please refer to the product guide and product label or contact your local Bayer CropScience representative.
4 At what growing/disease stage should I apply Prosaro in cereals? Prosaro allows preventative control before the disease establishes as well as curative control after a disease has established. Application timing is extremely flexible, from early tillering stage (growth stage 21) right through to 5 weeks before harvest. This enables targeted application of the foliar fungicide to effectively manage each disease at the most appropriate development stage. Generally spray Prosaro at the first sign of disease. Up to two sprays of Prosaro may be applied per season to the crop.
5 Which herbicides and insecticides can I tank-mix with Prosaro? The compatibility of Prosaro with any other product involves a range of considerations including the choice of adjuvant used, rate of the tank mixing product, multiple mixtures, product manufacturer and more. Generally, Prosaro is physically compatible with a wide range of different products and has also been tested in field trials for any potential crop damage with more than 30 different mixtures (herbicide/insecticide/nutrients). There have been no significant levels of crop damage recorded or loss in foliar disease efficacy. For further information on compatibilities with Prosaro please see the product guide or contact Bayer CropScience.

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