Observations on the Development of Leaf Blotch and Net Blotch of Barley from Barley Debris, 1968

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Abstract
SUMMARY: A survey of 56 fields of spring barley in West Sussex in 1968 showed that the extent and severity of leaf blotch (Rhynchosporium secalis) and net blotch (Pyrenophora teres) in the crop depended on the amount of stubble debris, from the preceding barley crop, lying on the soil surface in the spring. All the spring barley crops which did not follow barley had neghgible amounts of leaf blotch and net blotch. The cultivar Zephyr appeared to be very susceptible to net blotch and cv. Vada markedly resistant. R. secalis and P. teres in stubble debris of barley collected from the soil surface in the spring was shown to be capable of infecting barley seedlings growing through the debris.