01328nam a2200313 a 450000100080000000500110000800800410001910000190006024500710007926000310015030000150018152005550019665000170075165000230076865000170079165000190080865000180082765000240084565000130086965000120088265000180089465000140091265000130092665000110093965000090095065300190095965300200097870000160099813907952009-08-13       1972    bl uuuu      00u1 u    #d1 aJOHNSON, L. F.  aMethods for research on the ecology of soil-borne plant pathogens.  aMinneapolis: Burgessc1972  a247p.cil.  aCollection of soil samples. Isolation of groups of microorganisms from soil. Enumeration and observation of microorganisms in situ. Microorganisms in the rhizosphere. Isolation of plant pathogens from soil. Isolation of plant pathogens from roots. Control of soil environment. Extraction of soil solutions. Respiration and enzyme activity. Growth and survival.  Root exudates. Screening soil microorganisms for antagonism. Testing for antibiotic activity. Production, stability, and activity of antibiotics in soil. Biological control. Culture media.  abacteriology  abiological control  amicrobiology  amicroorganisms  aBacteriologia  aControle Biológico  aEcologia  aMétodo  aMicrobiologia  aPatógeno  aPesquisa  aPlanta  aSolo  aMicroorganismo  aMicroorganismos1 aCURL, E. A.