Tesoro

Manufacturer
HELM
Category
Fungicides
Registered until
2025-02-28
Registration number
17222
Active materials
Links
FORMULATION AND ACTIVE INGREDIENT: Emulsion (oil in water) formulation, containing 250 g/litre (25.8% w/w) tebuconazole. A broad spectrum systemic fungicide for use on different arable crops.
Other specific restrictions:
1. For use on cereals a maximum dose of 1 L/ha applies after BBCH 30 and before early boot stage (BBCH 39). A further maximum dose of 1 L/ha cannot be applied until after BBCH 40 stage.
2. For use on oilseed rape a maximum total dose of 0.5 litres of product/ha can be applied between growth stages BBCH 14 and 19.
3. For use on oilseed rape a maximum total dose of 2.0 litres of product/ha can be applied between growth stages BBCH 20 and 69.
4. For use on oilseed rape if an application is made before BBCH 19 then no further applications are allowed on the crop.
5. A minimum interval of 14 days applies between applications.
6. This product must not be applied via hand-held equipment.
 
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.
TESORO is recommended for control of a wide range of diseases on winter and spring sown cereals and oilseed rape. For best disease control and yield benefit TESORO should be applied at an early stage of disease development, before infection spreads to new crop growth
 
Resistance management
Repeated application of TESORO alone should not be used on the same crop against a high risk pathogen such as cereal powdery mildew. Tank mixtures or alternation with fungicides having a different mode of action (e.g. morpholines) have been shown to protect against the development of resistant forms of disease. This product contains tebuconazole a DMI fungicide. Resistance has been identified in Septoria leaf blotch (Mycosphaerella graminicola) which may seriously affect the performance of some products. This product is not recommended for the control of this disease. For further advice on resistance management in DMI’s contact your agronomist or specialist advisor, and visit the FRAG-UK website. Strains of Light Leaf Spot resistant to azole fungicides are known to exist. To avoid development of resistance apply this product protectively in response to disease forecasts. Where possible when Light Leaf Spot is present use a fungicide with an alternative mode of action or mixes containing an alternative mode of action when targeting other diseases such as Sclerotinia. The possible development of diseases resistant to TESORO cannot be excluded or predicted. Where such resistant strains occur, TESORO is unlikely to give satisfactory control.
 
GENERAL NOTES
Mixing
Thoroughly shake the pack before use. Add the required quantity of TESORO 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.
Tank Mixes
Where tank mixes are used TESORO should be added to the spray tank last, after first dispersing the other product(s), unless otherwise specified - see 'Compatibility' sections under individual crops.
Application
Important: Sprayers should be THOROUGHLY CLEANED before use and filters and jets checked for damage and blockages.
Tank cleaning
Thoroughly wash all spraying and measuring equipment with water and a wetting agent immediately after use. Do not clean application equipment near surface water/Avoid contamination via drains from farmyards and roads.
Water Volume
See under individual crop sections. Pressure A pressure of 2-3 bar (30-40 psi) is recommended.
Spray Quality
Apply as a MEDIUM quality spray (as defined by BCPC).
General
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.
 
CROP SPECIFIC INFORMATION
CEREALS
Crops
TESORO may be used on all varieties of winter and spring sown wheat (excluding durum), barley, rye and oats.
Rate of Use 1.0 litre per hectare
Maximum individual dose: 1.0 litre per hectare
Maximum total dose per crop: 2.0 litres per hectare
 
Application
See also 'GENERAL NOTES’ section. Water Volume Most crops: 155-200 litres/hectare Dense crops after the first node is detectable: 250 litres/hectare Large crops, varieties highly susceptible to disease: 300 litres/hectare Permitted Timing TESORO may be applied at any stage between beginning of stem elongation (BBCH 30) and before the grain watery ripe stage (BBCH 71), with a maximum of one application before the early boot stage (BBCH 39) and one application after BBCH 40 stage. A minimum interval of 14 days applies between applications.
 
Diseases Controlled - Application Timing
Septoria Leaf Spot and Glume Blotch (Septoria tritici and S. nodorum) (Wheat) To protect the flag leaf and ear from Septoria tritici and S. nodorum apply TESORO from flag leaf emergence (GS 37) until ear fully emerged (GS 59). Earlier application may be necessary where there is a high risk of S. tritici and TESORO should be applied when the disease is active, but before it is visible on the upper leaves. Applications made once foliar symptoms of S. tritici are already present on the upper leaves will be less effective since these symptoms only develop several weeks after initial crop infection has taken place. Yellow Rust and Brown Rust (Wheat, barley and rye) Apply TESORO at the first signs of disease. Applications made to established infections are likely to be less effective. A second application may be made if required observing the growth stage restrictions, an interval of three weeks must occur between applications.
Ear Disease Complex (Wheat) TESORO applied soon after ear emergence can give a good reduction of Fusarium ear blight and a reduction of sooty moulds (Alternaria and Cladosporium) and can result in cleaner, brighter ears.
Powdery Mildew (Wheat, barley, rye and oats) TESORO should be applied at first signs of disease. When treating established mildew or particularly disease susceptible varieties, improved control can be achieved by adding 0.5 L/ha fenpropimorph (MAFF 00578) in tank mixture. When disease pressure remains high, application may be repeated if necessary – see ‘Resistance Management'. - Rhynchosporium (leaf blotch) (Barley and rye) Apply TESORO at the onset of disease. For effective control of moderate to severe infections a second application may be necessary 3 weeks later.
Net Blotch (Barley) Apply TESORO at the very first signs of disease in spring/early summer. A second application 3 weeks later will give most effective control when conditions remain favourable for disease development. When disease develops after flag leaf emergence a single application of TESORO will generally provide good protection.
Crown rust (Oats) TESORO applied to control mildew on oats will also reduce crown rust infections occurring around this time. Alternatively, apply TESORO on first appearance of crown rust.
 
Compatibility
TESORO may be mixed with any ONE of the following products for use on winter and spring sown wheat (excluding Durum), barley and rye:
fenpropimorph 750 g/l (MAFF 00578)
chlorothalonil 500 g/l (MAPP 14548,)
 pirimicarb 500 g/kg (MAPP 10515) It is important to consult the manufacturer's literature before using any of the mixes listed above and care should be taken to ensure that mixtures are only applied within the recommendations for both products - see also 'Mixing' under 'GENERAL NOTES'.
 
Factors Affecting Crop Safety
Occasionally, after the application of TESORO, some transient leaf speckling on wheat or leaf reddening/scorch on oats may occur, but these symptoms have not been shown to adversely affect yield responses accruing from the benefits of disease control.
 
OILSEED RAPE
TESORO may be used on all varieties of winter or spring sown oilseed rape.
Rate of Use
Normally 1.0 L/ha, but 500 ml/ha may be used for autumn/winter applications to control light leaf spot.
Maximum individual dose: 1.0 litre per hectare
Maximum total dose per crop: 2.0 litres per hectare
 
Application
See also 'GENERAL NOTES'.
 
Water Volume
TESORO should be applied in 155-400 L/ha of water, using the higher volume in dense crops.
 
Permitted Timing
A maximum total dose of 0.5 litres of product/ha can be applied between growth stages BBCH 14 and BBCH 19. OR A maximum total dose of 2.0 litres of product/ha can be applied between growth stages BBCH 20 and BBCH 69. If an application is made before BBCH 19 then no further applications are allowed on the crop. A minimum interval of 14 days applies between applications.
 
Diseases Controlled
- Light Leaf Spot
Autumn/Winter: Light leaf spot should be prevented from developing early in the life of the crop and good protection from subsequent disease development will be provided by an application of 0.5 L/ha TESORO in autumn/winter (usually late October to early December). Follow up spray(s) of 1.0 L/ha may be required in the spring/summer depending on disease development.
Spring/summer: If an autumn treatment of TESORO has not been made and disease develops in the crop over winter, an early spring (March) application of 1.0 L/ha may be made from the onset of stem extension. The application of 1.0 L/ha of TESORO either pre- or post-flowering will generally control late development of light leaf spot on pods and leaves.
Dark Leaf/Pod Spot (Alternaria spp) Treatment with 1.0 L/ha TESORO should begin at the onset of disease
Sclerotinia Stem Rot 1.0 L/ha of TESORO applied at early to full flower will give some reduction of Sclerotinia stem rot
Ringspot (Mycosphaerella brassicicola) Spring/summer applications of TESORO made for the control of light leaf spot may also give some reduction of this disease.
 
NOTICE TO BUYER
All goods supplied by us are of high grade and we believe them to be suitable for any purpose for which we expressly supply them, but as we cannot exercise control over their mixing or use, all conditions and warranties statutory or otherwise, as to the quality or fitness for any purpose of our goods are excluded and no responsibility will be accepted by us for any damage or injury whatsoever arising from their storage, handling, application or use.
Registered for culturesRateBBCH
Winter wheat1 l30 - 71
Spring wheat1 l30 - 71
Spring barley1 l30 - 71
Winter barley1 l30 - 71
Winter rye1 l30 - 71
Spring rye1 l30 - 71
Spring oats1 l30 - 71
Winter oats1 l30 - 71
Winter rape0.5 - 1 l19 - 69
Spring rape0.5 - 1 l19 - 69