Written by cpm
Download PDF One of the main discussion points since the loss of chlorothalonil (CTL) has been how to shape fungicide programmes without it. CPM sits around the (virtual) table to gather some views. The quickest way to break new chemistry is to use it as a fire brigade treatment. By Lucy de la Pasture As the days begin to noticeably lengthen during March, agronomists and growers are taking stock of crops in the ground and making their best predictions for the season ahead. Fungicide decisions in the coming weeks will be shaped by variety, disease levels, the weather with an added shot of experience for good measure. AICC members, David Lines and Andrew Blazey face very different agronomy problems. In the West, septoria is enemy number one, says David, whereas in the East, yellow rust has already been showing its hand in some varieties on Andrew’s patch across a range of varieties. Agronomists are seeing several varieties with early outbreaks of yellow rust, though the cold weather in Feb has slowed its development considerably. “Several varieties have been hit badly by early yellow rust, though it has been subdued by the frosts during Jan which has killed off infected leaf,…
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