a guide to the recognition and understanding of ramularia and other ...

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50 FUNGAL DISEASES CAUSING SYMPTOMS SIMILAR TO RAMULARIA LEAF SPOTS Fungal diseases causing symptoms similar to ramularia leaf spots Net blotch (Pyrenophora teres) and spot form of net blotch (Pyrenophora teres f maculata) Net blotch is a common disease of barley whose symptoms can be easily mistaken for ramularia leaf spot. Net blotch produces dark brown lesions on a leaf which can be associated with leaf yellowing. In its most typical form, the lesions have a netted appearance. And lesions are not contained by the leaf ridges. The spot form of net blotch produces smaller lesions that are very similar to ramularia leaf spot. Ramularia leaf spot lesions tend to be more rectangular with straight longitudinal sides to the lesion than the spot form of net blotch. Net blotch symptoms are typically longer and more irregular than ramularia leaf spot. It is possible for the two diseases to be present on the same leaf in which case a more detailed microscopical analysis would be required to differentiate the two diseases. Net blotch symptoms on barley
FUNGAL DISEASES CAUSING SYMPTOMS SIMILAR TO RAMULARIA LEAF SPOTS 51 Spot form of net blotch lesions on barley
Page 1: A GUIDE TO THE RECOGNITION AND UNDE
Page 4 and 5: 2 Contents RAMULARIA Distribution C
Page 6 and 7: 4 RAMULARIA LEAF SPOT DISTRIBUTION
Page 8 and 9: 6 RAMULARIA LEAF SPOT DISTRIBUTION
Page 10 and 11: 8 Early stages SYMPTOMS What are th
Page 12 and 13: 10 SYMPTOMS Pepper spot symptom of
Page 14 and 15: 12 Later stage SYMPTOMS The rectang
Page 16 and 17: 14 SYMPTOMS Extensive ramularia lea
Page 18 and 19: 16 SYMPTOMS Ramularia leaf spot sym
Page 20 and 21: 18 SYMPTOMS Ramularia leaf spot sym
Page 22 and 23: 20 SYMPTOM APPEARANCE When do sympt
Page 24 and 25: 22 LIFECYCLE Disease lifecycle The
Page 26 and 27: 24 LIFECYCLE Spore dispersal Leaf w
Page 28 and 29: 26 LIFECYCLE Infection of barley by
Page 30 and 31: 28 LIFECYCLE Ramularia collo cygni
Page 32 and 33: 30 Ramularia Ramularia concentratio
Page 34 and 35: 32 CONTROL MEASURES Foliar fungicid
Page 36 and 37: 34 Fungicide choice CONTROL MEASURE
Page 38 and 39: 36 Physiological leaf spots Physiol
Page 40 and 41: 38 PHYSIOLOGICAL LEAF SPOTS Advance
Page 42 and 43: 40 PHYSIOLOGICAL LEAF SPOTS Physiol
Page 48 and 49: 46 Control of physiological leaf sp
Page 50 and 51: 48 PHYSIOLOGICAL LEAF SPOTS Magnesi
Page 54 and 55: 52 FUNGAL DISEASES CAUSING SYMPTOMS
Page 56 and 57: 54 Septoria nodorum FUNGAL DISEASES
Page 58 and 59: 56 REFERENCES AND FURTHER READING R
Page 60 and 61: 58 ACKNOWLEDGEMENTS Acknowledgement
Page 62: The Chemical Company

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