WebSep 30, 2024 · 30 Sep 2024. Categories: AHDB's phoma leaf spot forecast has predicted a relatively wide range of disease onset dates for winter oilseed rape this autumn. Prior to September, UK rainfall was generally below and air temperatures generally above the long-term averages. However, so far this autumn, at some locations, wet spells have favoured … WebSmaller plants are at higher risk of Phoma developing into canker Phoma moves faster in warmer conditions. Disease spread on the leaf gets progressively quicker between 3°C and 15°C. Early season small leaves …
Early phoma risk in OSR - Agrovista blog
WebSymptoms. These first appear in the autumn as pale brown, white or greenish leaf spots (5-20mm in diameter) which contain many ‘pin-head’ black spots called pycnidia. Infection can occur anytime from crop … http://www.tropicultura.org/text/v30n2/103.pdf should a beat maker have a llc
Treatments to control Phoma and Alternaria infections of
WebA fungicide applied as close as possible to a threshold helps maximise its effect. Treat varieties with lower resistance ratings for stem canker (7 and below) and backward crops first, when 10–20% of plants have phoma … WebOct 22, 2024 · Fungicide approval provides more choice for OSR growers. This autumn, growers of oilseed rape will have the option of a new fungicide for controlling diseases such as Phoma and Light Leaf Spot. Revel is a contact and systemic fungicide containing 250g difenoconazole in an emulsifiable concentrate for use in winter and spring OSR. WebPictor ® is a protectant and systemic fungicide for use in winter oilseed rape for the control of light leaf spot, Sclerotinia stem rot, Phoma lingam/stem canker and Alternaria dark leaf and pod spot. Product … shoulda been