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GENERAL INSTRUCTIONS

Foliar diseases on cereal crops Monitor the crop regularly for symptoms of disease. Generally, spray at the first sign of disease, although this will depend on factors such as expected weather conditions and the particular crop variety resistance. Refer to Directions for Use for specific disease recommendations. Up to two sprays of PROVISO may be applied per season to the crop. Ensure good coverage of all susceptible plant parts.

Physiological leaf spot Physiological leaf spotting (PLS) is an abiotic disorder that occurs most frequently in barley. The development of PLS is based on genetic (varietal susceptibility) factors and environmental stresses on the crop and mostly affects the upper side of the top four leaves. PROVISO does not reduce leaf symptoms from other abiotic disorders e.g. nutritional deficiencies or toxicities, frost damage, waterlogging, drought; effects from the application of other products e.g. herbicides, foliar fertilisers, adjuvants; or damage caused by pest infestations or diseases not listed on the label. PROVISO should be used primarily for the management of fungal diseases as listed in the Directions for Use table. Reductions in the severity of PLS symptoms on treated leaves can occur when applying PROVISO at critical growth stages for disease control in barley, particularly between GS32 and GS59, prior to PLS symptom appearance. For best results it is recommended that PROVISO is applied in a tank mix with VERITAS as per the Directions for Use table. Applications of PROVISO specifically targeting reductions in PLS severity and in the absence of significant disease pressure are not recommended as this may increase the selection pressure for fungicide resistance.

Crop safety Tank mixtures: When applying PROVISO in a tank mix with ORIUS, VERITAS or RADIAL, refer to the product labels for any additional guidelines on application and crop safety. This includes guidelines to minimise potential off target effects. Oats: Caution: Application of PROVISO with a tebuconazole product such as ORIUS or VERITAS to some varieties of oats may result in early senescing and bronzing of leaves. Varieties most at risk may also exhibit this trait under various stress conditions not related to fungicide sprays. Mitika variety of oats has been identified as being susceptible to this condition when tebuconazole is applied, although other varieties may also be susceptible. The potential disease control to be achieved by using PROVISO in Mitika oats should be weighed against the risk of crop damage. For further information on oat tolerance contact ADAMA Australia.

Disease control in canola Blackleg: Higher 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 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 PROVISO may be applied per season to the crop. Sclerotinia: PROVISO is most effective when application is made prior to conditions conducive to sclerotinia infection. Infection and disease development are most conducive in warmer winter or spring conditions with extended periods of leaf wetness due to rainfall, dew and high humidity. Sclerotinia is most likely to develop where day temperatures are warmer coinciding with a saturated soil profile and rainfall events. Refer also to industry guidelines for advice on conditions under which sclerotinia are most likely to develop. Control of sclerotinia stem rot is more effective in crops which have a uniform flowering. Uneven flowering (e.g. caused by staggered germinations) makes optimum spray timing difficult and two sprays may be required in these crops. Generally, a single application of PROVISO at 20 to 30% flowering will control sclerotinia in crops with a short flowering interval. Crops with an extended flowering period may require a second application prior to 50% flowering (full-bloom) to adequately control sclerotinia if conditions late in the season are conducive to development of disease. Length of protection may be reduced in bulky crops where coverage is difficult and where there is growth dilution of the fungicide. For optimum protection, application should be directed to obtain coverage on petals, leaves and stems.

MIXING Two thirds fill the spray tank with clean water, and with the agitator operating, add the required quantity of PROVISO. For tank mixtures with ORIUS or VERITAS, add PROVISO after the tank mix partner has been added to the tank and agitated to ensure thorough suspension in the spray solution. Top up the spray tank to the required volume with clean water with the agitator running. Add the required quantity of adjuvant after mixing is complete and spray tank is filled to the required level. Maintain agitation while spraying.

APPLICATION Ground: Wheat, barley and oats: Apply product using a spray volume of 70 – 100 L/ha and a MEDIUM spray quality. Canola: Apply product using a spray volume of 60 – 100 L/ha and a MEDIUM spray quality. Aerial: Apply product using a minimum spray volume of 20 L/ha and a MEDIUM spray quality.

Compatibility For information on compatibility please contact ADAMA Australia.