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Gardner, D. E., and F. F. Hendrix, Jr. 1973. Carbon dioxide and oxygen concentrations in relation to survival and saprophytic growth of Pythium irregulare and Pythium vexans in soil. Canadian Journal of Botany 51:1593-1598.
ABSTRACT
In both pasteurized and nonpasteurized soils, higher CO2 combined with normal atmospheric O2 concentrations were generally favorable for growth and survival in comparison with the effects of lower O2 combined with atmospheric CO2 concentrations. Different amounts of growth among the various gas treatments and between pasteurized and nonpasteurized soils alos occurred in the general populations of soil fungi, actinomycetes, and bacteria. Gas effects on total fungi, actinomycetes, and bacteria may have resulted in indirect effects on Pythium.

FULL TEXT
Full text not available for this publication.

HOSTS
No host information available for this publication.


PATHOGENS
Pythium irregulare - Pythium
Pythium vexans - Pythium

RELEVANT TO BIOCONTROL
No.

KEY WORDS
Carbon dioxide, oxygen, saprophytic growth, N/A, Pythium irregulare, Pythium vexans.

IMAGES
01_062 -- soil gas experiment at UGA 01_062 - soil gas experiment at UGA
PATHOGEN: Aspergillus melleus
01_063 -- soil gas experiment at UGA 01_063 - soil gas experiment at UGA
PATHOGEN: Aspergillus melleus
01_064 -- soil gas experiment at UGA 01_064 - soil gas experiment at UGA
PATHOGEN: Aspergillus melleus
01_065 -- soil gas experiment at UGA 01_065 - soil gas experiment at UGA
PATHOGEN: Aspergillus melleus
01_066 -- soil gas experiment at UGA 01_066 - soil gas experiment at UGA
PATHOGEN: Aspergillus melleus
01_067 -- soil gas experiment at UGA 01_067 - soil gas experiment at UGA
PATHOGEN: Aspergillus melleus
01_068 -- soil gas experiment at UGA 01_068 - soil gas experiment at UGA
PATHOGEN: Aspergillus melleus
01_069 -- soil gas experiment at UGA 01_069 - soil gas experiment at UGA
PATHOGEN: Aspergillus melleus
01_070 -- fungi from steamed soil CO2 = .03%, O2 = 5-21%, no yeast 01_070 - fungi from steamed soil CO2 = .03%, O2 = 5-21%, no yeast
PATHOGEN: Aspergillus melleus
01_071 -- fungi from steamed soil CO2 = 7-15, O2 = 21%, some yeast (orange pink) 01_071 - fungi from steamed soil CO2 = 7-15, O2 = 21%, some yeast (orange pink)
PATHOGEN: Aspergillus melleus
01_072 -- culture 01_072 - culture
PATHOGEN: Aspergillus melleus
01_073 -- fungi from steamed soil CO2 =.03%, O2 = 5-21%; CO2 =7-15%, O2 = 21%; CO2 =7%, O2 = 10% 01_073 - fungi from steamed soil CO2 =.03%, O2 = 5-21%; CO2 =7-15%, O2 = 21%; CO2 =7%, O2 = 10%
PATHOGEN: Aspergillus melleus
01_074 -- fungi from steamed soil CO2 =.03%, O2 = 5-21%, CO2 =7-15%, O2 = 21%, CO2 =7%, O2 = 10% 01_074 - fungi from steamed soil CO2 =.03%, O2 = 5-21%, CO2 =7-15%, O2 = 21%, CO2 =7%, O2 = 10%
PATHOGEN: Aspergillus melleus
01_075 -- fungi from non-steamed soil CO2 =.03%, O2 = 5-21%, no yeast 01_075 - fungi from non-steamed soil CO2 =.03%, O2 = 5-21%, no yeast
PATHOGEN: Aspergillus melleus
01_076 -- fungi from non-steamed soil CO2 =7-15%, O2 = 21%, some yeast 01_076 - fungi from non-steamed soil CO2 =7-15%, O2 = 21%, some yeast
PATHOGEN: Aspergillus melleus
01_077 -- fungi from non-steamed soil CO2 =7%, O2 = 10%, some yeast 01_077 - fungi from non-steamed soil CO2 =7%, O2 = 10%, some yeast
PATHOGEN: Aspergillus melleus
01_078 -- fungi from non-steamed soil CO2 =.03%, O2 = 5-21%; CO2 = 7-15%, O2 = 21%; CO2 =7%, O2 = 10% 01_078 - fungi from non-steamed soil CO2 =.03%, O2 = 5-21%; CO2 = 7-15%, O2 = 21%; CO2 =7%, O2 = 10%
PATHOGEN: Aspergillus melleus
01_079 -- upper row steamed, lower row non-steamed soil; CO2 =.03%, O2 = 5-21%; CO2 = 7-15%, O2 = 21%; CO2 =7%, O2 = 10% 01_079 - upper row steamed, lower row non-steamed soil; CO2 =.03%, O2 = 5-21%; CO2 = 7-15%, O2 = 21%; CO2 =7%, O2 = 10%
PATHOGEN: Aspergillus melleus

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