DISEASES OF FLOWERS, LEAVES AND STEMS

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Anguina tritici = wheat seed gall nematode - Con- Normal seed can be easily separated from galls bymechanical separator so you can start with "clean" seed.- Galls or "cockles" or "peppercorns" are smaller andfall through mesh.-Seed immersed in brine solution - cockles float and canbe skimmed off. Must be quick.- Done on small scale on farms in developing countries.- Relatively host specific = crop rotation effective.- Volunteer plants and weed hosts must be eliminated.
H. JensenAnguina agrostis - grass seed gall nematode- Galls (about half) fall to ground with straw at harvest.- Was controlled by field burning.- No longer a common practice.One year causedover 100,000 poundsof Oregon grass seedto be rejected.Nematodes frombroken grass seed gall
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Page 15 and 16: Anguina agrostis - leaf galls on Po
Page 17 and 18: Ditylenchus dipsaci - stem and bulb
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Page 31 and 32: Ditylenchus destructor - potato rot
Page 33 and 34: Ditylenchus angustus - ufra nematod
Page 35 and 36: Ditylenchus angustus - ufra nematod
Page 42 and 43: Aphelenchoides ritzemabosi - chrysa
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Page 50 and 51: Aphelenchoides fragariae - spring c
Page 52 and 53: Aphelenchoides fragariae - Spring c
Page 54 and 55: Aphelenchoides besseyi - white tip
Page 56 and 57: Aphelenchoides besseyi - white tip
Page 58 and 59: Bursaphelenchus xylophilus - pine w
Page 60 and 61: Vulval flap of female Bursaphelench
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Bursaphelenchus xylophilus - pine w
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Bursaphelenchus (= Rhadinaphelenchu
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Bursaphelenchus cocophilus - red ri
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The superfamily Aphelenchoidea is a
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DISEASES OF FLOWERS, LEAVES AND STEMS

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