Controlling Root Rots

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The canopy of the tree should be withoutdefect and covered continuously withfoliage.
The rhizosphere• As a concept it variesdepending on howyou study it.• From 10um to a fewmm from the root• The biology andchemistry near theroot are very differentthan that of the bulksoil
Page 1 and 2: Controlling Root RotsJim DownerUniv
Page 3 and 4: Causes of Root Rot• Water Molds (
Page 5 and 6: Phytophthora Life History• Myceli
Page 7 and 8: Chlamydospores• Long-term surviva
Page 9 and 10: Cysts germinate and then infect aft
Page 11 and 12: Roots• Roots are often dark ormel
Page 13 and 14: Healthy vs. Not
Page 15: PhytophthoraWhat is it?• A micros
Page 20 and 21: Avocado Root Rot
Page 22 and 23: Phytophthora: symptoms
Page 24 and 25: Ficus• Thinning of foliage isreal
Page 26 and 27: Note pink rot pathogensporulating o
Page 28 and 29: Disease predisposing factors• Exc
Page 30 and 31: Planting Too Deep• Almost always
Page 32 and 33: Stem/Root intersection• Crown of
Page 34 and 35: Anoxic root rots• Due to rootsuff
Page 36 and 37: The toxic proportion• >1 ppm boro
Page 38 and 39: Soil Structure• Soil particles co
Page 40 and 41: Methods and Mechanisms ofPhytophtho
Page 42 and 43: Zoospore motilityCalcium at 1mM con
Page 44 and 45: Calcium control• Calcium supplied
Page 46 and 47: P. Cinnamomi control withphosphorus
Page 48 and 49: Fungicides• fosetyl-Al Aliette•
Page 50 and 51: Mulch-hugger!
Page 54 and 55: Mulch Transect StudiesSurface ofmul
Page 56 and 57: Organisms seen in MulchesDeutermyco
Page 58 and 59: • Trees produceabundant roots inm
Page 60 and 61: Enzyme activities in transectprofil
Page 62 and 63: Mulch FungiCeraceomycestessulatusCo
Page 64 and 65: Cellulase effects onZoosporangia/sp
Page 66 and 67: Integrated Control• Use all the m

Controlling Root Rots

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