KeystonePlant Protection Product ComparisonPlant Protection Product ComparisonReport inaccuraciesReport inaccuracies

FORMULATION & ACTIVE INGREDIENT:KEYSTONE is a suspension concentrate containing 99 g/l (9.2%w/w) epoxiconazole and 125 g/l (11.6% w/w) isopyrazam.

TARGETS:Controls Septoria tritici, Septoria nodorum, Brown rust and Yellow rust in winter wheat, Net blotch (moderate control), Rhynchosporium secalis (reduction), Ramularia collo-cyni and Brown rust on winter and spring barley, Brown rust and Rhynchosporium secalis (reduction) on rye and Brown rust and Septoria spp on triticale.

DIRECTIONS FOR USE
IMPORTANT: This information is approved as part of the Product Label. All instructions within this section must be carefully read in order to obtain safe and successful use of this product.

GENERAL INFORMATION
Isopyrazam is a orthosubstituted pyrazole carboxamide fungicide belonging to the sub-class of the benzonorbornenes.
Isopyrazam is an SDH inhibitor (FRAC group #7 carboxamides). Isopyrazam is predominantly protectant but has significant biochemical potency and can deliver disease control away from the point of application.
No cross resistance to any compound of a different fungicide class is expected.
Epoxiconazole is a triazole (DMI) fungicide. Epoxiconazole is a systemic fungicide with protectant and curative properties.
KEYSTONE shows good crop safety and disease control which can result in significant yield benefits. Wheat crops may show some transient bleaching after treatment but this is unlikely to have an effect on yield.
KEYSTONE is best used as a protectant treatment or in the earliest stages of disease development.

 

Leaf spot (Mycosphaerella graminicola)

Glume blotch (Septoria nodorum)

Yellow rust (Puccinia striiformis)

Brown rust (Puccinia recondita)

Net blotch (Pyrenophora teres) - Moderate

Brown rust (Puccinia hordei)

Ramulaira collo-cygni

Leaf blotch (Rhynchosporium secalis) – Reduction

Brown rust (Puccinia recondita)

Leaf blotch (Rhynchosporium secalis) – Reduction

Brown rust (Puccinia recondita)

Leaf spot (Septoria spp)

 

Use KEYSTONE 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. You must not apply more than two foliar applications of products containing SDH inhibitors to any cereal crop. Users should refer to current FRAG-UK guidelines for SDHI compounds. KEYSTONE contains a DMI fungicide. Resistance to some DMI fungicides has been identified in Septoria leaf blotch (Mycosphaerella graminicola) which may seriously affect the performance of some products. For further advice on resistance management in DMIs contact your agronomist or specialist advisor, and visit the FRAG-UK website. Disease control may be reduced if strains of pathogens less sensitive to KEYSTONE develop.

 

Crops and growing conditions KEYSTONE can be used on all varieties of winter wheat and winter and spring barley, rye and triticale. Apply KEYSTONE under good growing conditions with adequate soil moisture. Avoid poor growing conditions which may give less reliable results.

Always inspect crops to assess disease development immediately before spraying. Best results will be achieved from applications made as a protectant treatment or in the earliest stages of disease development following a disease risk assessment or the use of appropriate decision support systems. KEYSTONE is accepted by BBPA (British Beer and Pubs Association) for use on malting barley provided application is made before the start of ear emergence.Latest timing in malting barley is therefore up to and including awn emergence.

Apply KEYSTONE at 1.0 litres per hectare.

 

There are no restrictions on succeeding crops in a normal rotation.

  

Make sure the sprayer is set to give an even application at the correct volume. Fill the spray tank with half the required volume of water and begin agitation. Add the required amount of KEYSTONE to the spray tank and allow to disperse before adding any other product. Add the rest of the water and continue to agitate the mixture thoroughly. Always agitate during spraying.

Apply KEYSTONE using a conventional fan nozzle producing a medium spray quality at as defined by the British Crop Protection Council. A spray pressure of 2-3 bars is recommended.

Apply KEYSTONE in a recommended 100 - 400 litres of water per hectare through conventional crop spraying equipment. The higher spray volumes are recommended where the crop is dense or disease pressure/risk is high to ensure good penetration to the lower leaves and stem bases. Disease control maybe compromised by reducing water volumes, where good spray coverage is difficult to achieve.

Thoroughly wash out sprayer according to manufacturer’s guidelines and dispose of washing and clean containers according to DEFRA Code of Practice and local water authority guidelines.