- Page 1: , ,. ,o . ; , . o , . r. , -' .L ,
- Page 5 and 6: In memory ofimy respected colleague
- Page 7 and 8: Acknowledgments Planning Committee
- Page 9 and 10: Introduction 1 Potato Disease 1 The
- Page 11 and 12: A potato disease is an interaction
- Page 13 and 14: Fig. 1.A, Lower portion of young po
- Page 15 and 16: +q I B Fig 4. Natural openings in a
- Page 17 and 18: Part I. Disease in the Absence of I
- Page 19 and 20: more heavily in the vascular region
- Page 21 and 22: the air temperature when tubers are
- Page 23 and 24: iiO A B 'D C Fiq. 14 Second growth:
- Page 25 and 26: identifying tissue bruised by black
- Page 27 and 28: Internal Sprouting multiple sprouts
- Page 29 and 30: conditions permits normal leaf deve
- Page 31 and 32: Epidemiology Oxidant injury is pres
- Page 33 and 34: sevritof stnting, chiorosis. loss o
- Page 35 and 36: Selected Reference brown to bronze
- Page 37 and 38: Part II. Disease in the Presence of
- Page 39 and 40: should be planted on land with at l
- Page 41 and 42: Control I) Use disease-free tubers
- Page 43 and 44: FOI-SO M. D, and I. A. FRIEDMAN. )9
- Page 45 and 46: Fungi Powdery Scab liberating powde
- Page 47 and 48: Histopathology Sort of sporangia de
- Page 49 and 50: any time but generally occurs late
- Page 51 and 52: '40 ff .. . '1 f . ."L', . '1 .,. "
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A \, 2) Powdery mildew is rarely a
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R., Inst.. Kew. Surrey. ngland. 609
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TORRES, H.. E. R. FRENCH, and I.. W
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d AC D A 0 Fig 53 Gray mold. A, Bot
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strands of pigmented hyphae. Sclero
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tuber malformation. Roots are also
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1. Giant-hill plants, taller than n
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13. Bacterial soft rot. Erwinia car
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24. Wart. Synchytrium endobioticum
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34. Pleospora herbarum (Stemphylium
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44. Charcoal rot. Macrophomina phas
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55. Leafroll virus. Current season
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67. Mop-top virus. Primary tuber 68
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77. Aster yellows mycoplasma sympto
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Symptoms Small, localized, light br
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obovoid, and 14-30 X 5-10 pm. Pycni
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invaders through the IFusarium lesi
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necrosis extending into the tuber t
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do not survive drying. Both species
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cauisal. Tesis Magister Scientiae e
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penetration, and subsequent disease
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have been demonstrated, including t
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In P..floridana,strains of PVY" and
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infects certain comnie,-cial stocks
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cytoplasm of infected potato cells
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WETTER, C. 1971. Potato virus S. No
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3) Resistance has not been identifi
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nm), which do code for coat protein
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Symptoms AMV may induce Other predo
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Disease Cycle I)escriptions of Plan
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Selected References KASSANIS, B. 19
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Control 1)Avoid locations in wkhich
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The "yellows" types of disease, cha
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modifying cultural practices and by
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immature females in the white or ye
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l.aboratory, Control. and Quarantin
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They attack many major crops in the
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infested areas of North America sev
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antennal tb l tuberce u antenna eye
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carbon tetrachloride, applied at th
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Diagnostic Microbial Structures Scl
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Surface and or interior Shades of g
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Equivalent Names of Potato Diseases
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Common Name Causal Factor Other Nam
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Common Name Causal Factor Other Nam
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coalesce-union of similar structure
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many days following removal of the
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Index Abrasions, tuber surfaces. 14
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Irost tolerance in. 9 aniligena. 68