Sonido seed treatment reduces early pest damage in maize. It helps deliver healthy crops from the start, together with high yields for both forage maize and anaerobic digester applications. Partner with MaisTer WG herbicide (foramsulfuron + iodosulfuron-methyl-sodium + isoxadifen-ethyl) later in the season for effective broad-leaf weed control.

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Product overview

Sonido controls key maize pests, especially wireworm, when used on crops planted in good soil and weather conditions and with early vigour. In addition, Sonido has an excellent environmental profile including beneficial insects.

Product summary

Composition: 400g/l thiacloprid concentrated suspension for seed treatment (FS)

Dose rate: 125ml/unit (50g active per unit seed)

Registered crops: Maize grain, silage and seed production) and sweetcorn

Registered pest: Wireworms (increase in crop stand and early vigour due to a reduction in wireworm feeding damage)

Usage restrictions for the grower: No constraint concerning crop rotation, succeeding crop and soil type

Maize growing advice

Maize can be a difficult crop to grow. Every farm’s situation is different, so it is vital to seek guidance from your advisor. However, together with the Maize Growers’ Association, we have compiled some quick pointers for growers:

  1. For forage maize, try to achieve 30-35% dry matter: this should lead to the same percentage of energy-rich starch. For biogas maize, try to achieve 27-31% dry matter to enable effective fermentation
  2. Adjust dry matter as plants grow by managing seed rates, drilling dates, nitrogen levels, choice of variety and use of starter fertilisers
  3. Soil structure and seedbed preparation are vital: to ensure rapid rooting, deep-cultivate or plough the field, especially if it has been trafficked through slurry or FYM applications
  4. The seedbed should be fine enough for good germination but not so fine that capping may occur
  5. Only drill maize when soil temperature is over 8°C at 9 a.m. for seven consecutive days
  6. To grow quickly and efficiently, maize requires warm days and nights. If you are growing under colder conditions, choose varieties from earlier ‘maturity groups’
  7. Good germination and early vigour are essential to avoid gappy crops and achieve best yields
  8. Where you have soil pests such as wireworm, treat your maize seed with Sonido
  9. Maize is a poor competitor for soil nutrients at early growth stages, so remove problem weeds early
  10. Later harvesting can produce higher yields but at the risk of soil compaction and run-off with potentially serious environmental effects

Important things to remember

  1. Sonido has shown comparable/slightly weaker seed safety to former commercial seed treatment standards (Poncho) in seed safety tests
  2. However, a greater impact resulting in delayed emergence and reduced final stand was observed in some varieties
  3. Under field conditions these differences are less visible; but have been observed under difficult growing conditions
  4. Bayer strongly recommends that breeders test all varieties to assess compatibility before commercial treatment with Sonido
  5. Bayer recommends use of Sonido only on high-quality seed lots showing strong emergence and vigour
  6. Co-treatment with Mesurol (methiocarb) is NOT recommended