RudisPlant Protection Product ComparisonPlant Protection Product ComparisonReport inaccuraciesReport inaccuracies

A broad spectrum systemic fungicide with protectant and curative properties for use on cabbage, Brussels sprouts, cauliflower, broccoli/calabrese, carrot, parsnip, swede, turnip and leeks.

Rudis is a fungicide specifically developed for vegetable crops with a kinder SC formulation.  It contains the triazolinthione (tzt) technology of prothioconazole. Unlike other DMI chemistry, Rudis enhances crop greening to the same level as strobilurins. This is linked to increased photosynthesis and enhanced nitrogen assimilation, leading to better quality and yield.

Rudis is proven to deliver cleaner crops. Independent trials conducted in The Netherlands showed Rudis to be the best performer against ring spot. In a severe test on cabbage it reduced infection on leaves to 24 per cent, compared with 44 per cent from the next closest product, and 86 per cent in the untreated. More importantly it was the only product to keep the cabbage heads completely disease-free.

Similarly, a UK leek trial independently assessed for marketable yield by the Stockbridge Technology Centre showed substantial gains from using Rudis, particularly in combination with Nativo 75WG (trifloxystrobin and tebuconazole). Against a baseline trimmed yield from the untreated of 57t/ha, the Rudis programme showed a 12 per cent improvement, comparable to a range of strobilurin based products. By far the best result was achieved with programmes combining two applications of Rudis with two of Nativo 75WG, which boosted marketable yield by 22 per cent.

Note on Nativo 75WG: Growers with Nativo 75 WG bearing the old MAPP number 13057 can still use the product on leeks up to 30 June 2016, but product with the new MAPP number 16867 is no longer authorised for leeks. Work is ongoing to have this crop re-instated. Always check the CRD website for the latest product information.

Combines exceptional sustained protection and curative activity
Broad-spectrum disease control
Unique greening and physiological yield effects in the same league as strobilurins
Strongest broad spectrum DMI
Best QoI alternation partner
Kinder dedicated formulation for vegetable crops

To maximise the quality-enhancing boost of tzt technology and disease control, always use Rudis at the full rate. For control of leek rust in a curative situation or if the crop is very waxy, mixing with an approved sticker/wetter adjuvant may enhance the activity of Rudis.

Rudis as part of programme

An effective programme has three stages:
Clean start: ensure the best start possible with a clean crop. If any disease has already crept in, use a curative product to clean up. Otherwise maximise the clean leaf with strobilurin-based chemistry for protectant activity and greening/physiological benefits.
Build and protect quality: as the crop moves onto the second spray and beyond, supporting plant growth and development is the priority. Alternating chemistry is essential as part of good resistance management practice.
Secure quality: later in the season maintaining quality and yield until harvest needs attention so that marketable yield and profits can be fully realised. Choosing the right products to prolong healthy appearance and react to late season infections is vital.

DIRECTIONS FOR USE
IMPORTANT: This information is approved as part of the Product Label. All instructions within this section must be read carefully in order to obtain safe and successful use of this product.
Rudis is recommended for control of a wide range of diseases on cabbage, Brussels sprouts, broccoli/calabrese, cauliflower, carrot, swede, turnip and parsnip and leeks For best disease control and yield benefit Rudis should be applied at an early stage of disease development, before infection spreads to new crop growth.

RESISTANCE MANAGEMENT
Rudis contains prothioconazole, a member of the DMI cross-resistance group. Use Rudis as part of an Integrated Crop Management (ICM) strategy incorporating other methods of control, including where appropriate other fungicides with a different mode of action. Do not spray more than 3 applications of Rudis per crop or per season.

DISEASES CONTROLLED
Cabbage, Brussels sprouts, broccoli/calabrese, cauliflower
Dark leaf spot (Alternaria brassicae & Alternaria brassicicola), ring spot (Mycosphaerella brassicicola) and powdery mildew (Erysiphe cruciferarum)

Leeks
Leek rust (Puccinia allii) and purple blotch (Alternaria porri)

Carrots
Leaf blight (Alternatia dauci), Sclerotinia rot† (Sclerotinia sclerotiorum) Powdery mildew (Erysiphe heraclei)

Qualified minor use recommendations:
Cabbage, Brussels sprouts, broccoli/calabrese, cauliflower
Based on limited data control of light leaf spot (Pyrenopeziza brassicae) and Phoma leaf spot (Phoma lingam) in brassicas would also be expected from applications of Rudis applied in accordance with the crop specific information section.

Leek
Based on limited data, useful reductions in Cladosporium allii (leaf blotch) and Stemphylium botryosum in leeks would also be expected from applications of Rudis applied in accordance with the crop specific information section.

Parsnip, swede and turnip
Based on limited data Rudis will control leaf blight (Alternaria dauci), Sclerotinia rot† (Sclerotinia sclerotiorum), powdery mildew (Erysiphe heraclei) in parsnip and powdery mildew (Erysiphe cruciferarum) and Alternaria (Alternaria brassicae) in swedes and turnips.
The possible development of disease strains resistant to Rudis cannot be excluded or predicted. Where such resistant strains occur, Rudis is unlikely to give satisfactory control.

CROP SPECIFIC INFORMATION
Brussels sprouts, cabbage, broccoli/calabrese, cauliflower:
Rudis may be applied as a foliar spray at a maximum individual dose of 0.4 L product/ha in a water volume of 200 to 500 L/ha, using the higher volume in dense crops. The first application is recommended before disease establishes in the crop (making use of disease forecasting systems as appropriate). This should be followed by further doses at an interval of about 21 days.
As part of a disease resistance management strategy, Rudis should be used in a fungicide spray programme with other products based on different classes of chemistry. The maximum number of doses allowed per crops is 3. At least 21 days must be allowed between the final application and harvest.
For control of brassica leaf spot diseases (Alternaria species, Mycosphaerella brassicicola) or for curative activity against other target diseases, mixing with an approved sticker/wetter adjuvant may enhance the activity of Rudis.
If the crop is intended for processing consult the processor before use of Rudis.

Leeks
Rudis may be applied to leeks as a foliar spray at a maximum individual dose of 0.4 L product/ha in a water volume of 200 to 500 L/ha, using the higher volume in dense crops. The first application is recommended before disease establishes in the crop (making use of disease forecasting systems as appropriate). This should be followed by further doses at an interval of about 21 days.
As part of a disease resistance management strategy, Rudis should be used in a fungicide spray programme with other products based on different classes of chemistry. The maximum number of doses allowed per crop is 3. At least 21 days must be allowed between the final application and harvest.
For control of leek rust, mixing with an approved sticker/wetter adjuvant may enhance the activity of Rudis if in a curative situation or if the crop is very waxy.

Carrots
Rudis may be applied to carrots as a foliar spray at a maximum individual dose of 0.4 L product/ha in a water volume of 200 to 500 L/ha, using the higher volume in dense crops. The first application is recommended before disease establishes itself in the crop (making use of disease forecasting systems as appropriate). This should be followed by further doses at an interval of about 21 days. Typically the first application should be made prior to canopy closure in June/July; this is particularly important for control of Sclerotinia sclerotiorum to ensure that all leaves are adequately protected
as the micro-climate under the crop becomes optimal for ascospore release from soil germinating apothecia. To reduce Alternaria infection on the leaves Rudis should be applied in early/mid August, or when first signs of disease appear on the foliage after the 5 true leaf stage of the crop (GS 15) if earlier than early/mid August.
As part of a disease resistance management strategy, Rudis should be used in a fungicide spray programme with other products based on different classes of chemistry. The maximum number of doses allowed per crops is 3. At least 21 days must be allowed between the final application and harvest.
If the crop is intended for processing consult the processor before use of Rudis.

MINOR USE QUALIFICATION
There is limited evidence of crop safety and/or product efficacy available for qualified minor uses and the commercial risk of using this product under this/these Qualified Minor Use(s) is borne entirely by the grower.

Parsnips, swedes and turnips:
Use on parsnip, swede and turnip are Qualified Minor Use Recommendations.
Rudis may be applied to, parsnips, swedes or turnips as a foliar spray at a maximum individual dose of 0.4 L product/ha in a water volume of 200 to 500 L/ha, using the higher volume in dense crops. The first application is recommended before disease establishes itself in the crop (making use of disease forecasting systems as appropriate). This should be followed by further doses at an interval of about 21 days. Typically the first application should be made prior to canopy closure in June/July; this is particularly important for control of Sclerotinia sclerotiorum to ensure that all leaves are adequately protected as the micro-climate under the crop becomes optimal for ascospore release from soil germinating apothecia. To reduce Alternaria infection on the leaves Rudis should be applied in early/mid August, or when first signs of disease appear on the foliage after the 5 true leaf stage of the crop (GS 15) if earlier than early/ mid August.
For control of leaf spot diseases (Alternaria species) on swede and turnip or for curative activity against other target diseases on these crops, mixing with an approved sticker/wetter adjuvant may enhance the activity of Rudis.
As part of a disease resistance management strategy, Rudis should be used in a fungicide spray programme with other products based on different classes of chemistry. The maximum number of doses allowed per crops is 3. At least 21 days must be allowed between the final application and harvest.
If the crop is intended for processing consult the processor before use of Rudis.

MIXING AND APPLICATION
Shake well before use. Add the required quantity of Rudis to the half-filled spray tank with the agitation system in operation and then fill to the required level. Continue agitation at all times during spraying and stoppages until the tank is completely empty. Spray immediately after mixing.
Ensure spray equipment is clean before use, and filters and jets are checked for damage and blockages. Spray equipment should be thoroughly cleaned with detergent after use.
Apply as a MEDIUM quality spray (as defined by BCPC).
Boom height and water volume should be adjusted to ensure good coverage of the crop, particularly at later growth stages. In dense crops at later growth stages, higher water volumes should be used as recommended.