Helping you to maximise your potato yield
Our expanding range of solutions now includes:
Zorvec Entecta™, containing the renowned Zorvec™ active, Option® (cymoxanil), the herbicide Titus®, and biostimulant BlueN™.
Our expanding range of solutions now includes:
Zorvec Entecta™, containing the renowned Zorvec™ active, Option® (cymoxanil), the herbicide Titus®, and biostimulant BlueN™.
How our solutions can fit into your programme
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Zorvec™ active
Zorvec active is the first active ingredient of its kind - a member of a novel class of fungicides that control diseases caused by oomycetes acting at a unique site within the pathogen. Inside the plant it moves systemically to protect new growth as it emerges and develops.
Key benefits:
- Unique site of activity: containing FRAC Group 49 chemistry.
- Outstanding efficacy: offers robust control on a 7-day spray interval, even during rapid growth phase of crop.
- Systemic activity: systemic movement of Zorvec active enables uniform protection even for portions of leaves receiving partial spray coverage.
See below for Zorvec containing products available to Ireland growers.
Zorvec Entecta™
Zorvec Entecta utilises the renowned Zorvec active formulation to deliver the most flexible Late Blight control and will ensure a clean start to your blight programme.
Formulation: Suspo-emulsion (SE) containing 240g/l amisulbrom + 48g/l oxathiapiprolin - Group 21 + 49 Fungicides respectively.
Recommended rate: 0.25L/ha
Corteva advise all growers to read and understand the 2026 best practice application advice for Zorvec containing products before spraying.
Option®
Option contains cymoxanil which has been the backbone of blight programmes for many years and continues to provide invaluable curative activity – up to 2 days kickback. It can be combined with other AI’s at any stage of the blight programme right up to harvest with its 1 day pre-harvest interval. Cymoxanil (Group 27) offers an alternative MoA in addition to curative activity as part of an anti-resistance strategy in mixture with a fungicide partner. This is of particular value for single AI products.
Formulation: Water dispersible granule containing 600g/kg cymoxanil.
Key benefits:
- Option contains cymoxanil, which is locally systemic and offers both preventative and curative control.
- It must only be applied in tank-mixture with specified formulations of partner blight materials.
- By using Option as a mixing partner, this will support an anti-resistance strategy reducing the selection and build-up of resistant strains of fungi.
Titus®
Titus is the mainstay of early season post emergence weed control in potatoes. Typically applied when weeds break through residual programmes or germinate late. Best control is achieved when weeds are small and actively growing (between 2-4 true leaves). Titus has activity on a wide range of difficult broad-leaved weeds, such as cleavers, chickweed, redshank, mayweed, brassica weeds and volunteer oilseed rape. It also has some excellent activity on some grasses, notably couch.
Formulation: 250 g/kg rimsulfuron
Application timing: in the spring pre-emergence of the crop up until the crop is 25 cm high. Best control is achieved when weeds are small and actively growing (cotyledon to 2 true leaves).
Application method: Sprayer
Key benefits:
- Suitable for use on all potato varieties excluding seed crops.
- Broad spectrum of activity including difficult broad-leaved weeds and grasses.
- It can be tank-mixed with metribuzin (on metribuzin tolerant varieties only), for improved control of knotgrass, fat hen and speedwells. However, mixtures with metribuzin will be antagonistic in terms of cleaver control.
- Use with an approved adjuvant at 0.1% v/v when applied alone or in a tank-mix
BlueN™
BlueN supports continuous nutrient use efficiency throughout the season, helping crops reach their marketable yield potential.
Contains: Methylobacterium symbioticum.
Pack size: 1 kg
Recommended rate: 333 g/ha
Maximum no. of applications: 1 application per crop
Application timing: From side shoots visible to flowering (GS25-60). Optimum timing is immediately before rapid canopy expansion (GS25-33) and when the crops are meeting in the row
Application method: Foliar with sprayer.
Rainfastness: 1 hour
BlueN optimises plant development by enhancing the uptake and utilisation of multiple nutrients. This process occurs throughout the growing season, resulting in consistent marketable yield increases. The methylobacterium colonises aerial parts of the plant, moving to actively growing leaves to support growth in younger areas.
BlueN works synergystically within the crop, enhancing metabolic functions including foliar activity, photosynthesis, and nutrient efficiency.