Figures & data
Fig. 1. (Colour online) Distribution of Brassica oil crop acreages (> 100 ha) in Swedish counties in 2012. Counties with > 4000 ha are indicated by darker colour codes. Total acreage is given below each ‘crop map’. In total, ~ 110 000 ha were sown to Brassica crops, out of which 97% was composed of B. napus. One-third of the entire acreage, mainly B. napus winter types, was allocated to the most southern region, Skåne. More details can be found at www.svenskraps.se/oljevaxt/arealer. Scattered incidences of P. brassicae are reported from most counties, but principally from those with largest sown Brassica acreage and Örebro county.
Fig. 2. (Colour online) (A) Winter oilseed rape damaged by clubroot disease. Photo taken in April 2006. (B) Deteriorated roots of oilseed rape plants due to infection by clubroot.
