Pyrenophora japonica occurring on barley in South AfricaThe Pyrenophora net blotch disease complex of barleyRelative importance of the barley net blotch pathogens Pyrenophora teres f. teres (net-type) and P. teres f. maculata (spot-type) in South AfricaCharacterization of the Pyrenophora net blotch disease complex of barley