Written by Jane
Wheat growers and agronomists should ensure as much as possible that their T1 spray timings are spot on this season after weeks of exceptionally wet weather forced some wheat growers to delay or even abandon their T0 applications. James Waterhouse, BASF agronomy manager for central England, says it is critical that the T1 fungicide is timed at final leaf three emergence and not by calendar date, regardless of when or whether a T0 spray was applied. “That advice doesn’t change with the seasons – the final three leaves contribute up to 80% of the yield and so need to be protected with fungicide,” says James. In situations where T0 fungicides have been applied at the right time, it is important to bear in mind these would not have provided any protection to leaf three, so the reasoning for the T1 timing is obvious, he explains. However, confusion can occur when a T0 is delayed. Although this results in a shortened time period between that spray and final leaf three emergence, it is important to not reduce T1 inputs or delay their application, James continues. “Even if the T0 spray is applied within a few days of the T1 timing, it…
The post Use T1 spray wisely to get wheat fungicide programmes back on track appeared first on cpm magazine.
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