Claim · model-written summary
Fermentation residue enhanced N transforming activity by microorganisms compared with control soil.
- Taxon
- soybeans
Glycine maxe0 - Treatment
- fermentation residuee1
- Outcome
- N transforming activity by microorganismse1
- Direction
- Enhancede1
- Comparator
- control soile1
- Setting
- fallow and growing seasonse2
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Treated and control plots were planted to soybeans”
e1“Enhanced N transforming activity by microorganisms in soil receiving fermentation residue compared with the control soil”
e2“heterotrophic aerobic bacteria observed throughout the fallow and growing seasons”
Title
Nitrogen Transformations and Microbial Population Dynamics in Soil Amended with Fermentation Residue
M. G. Volz; G. H. Heichel Journal of Environmental Quality 1979. doi:10.2134/jeq1979.00472425000800030033x
Other claims from this paper (10)
- Intervention effect Fermentation residue application raised soybean grain yield to 4,350 kg/ha in 1975, compared with 3,600 kg/ha for controls.
- Intervention effect Fermentation residue application raised soybean grain yield to 4,100 kg/ha in 1976, compared with 3,700 kg/ha for control plots.
- Intervention effect Fermentation residue application significantly increased soybean yield each year (P = 0.05).
- Intervention effect Fermentation residue application severely repressed nodulation of soybean compared with controls.
- Intervention effect Nitrate-N accumulated above 80 µg/g in the top 5 cm of fermentation-residue-treated soil, compared with 15 µg/g or less in the control.
- Intervention effect Nitrate-N levels were elevated in the top 91 cm of treated soil throughout the fallow and growing seasons.
- Association Populations of five physiological groups of soil microorganisms closely mirrored soil nitrogen levels in both experiments.
- Intervention effect Denitrifying bacteria reached 3.0 × 10 9 per g in treated soil, compared with a maximum of 6.8 × 10 5 per g in control soil.
- Observation The authors suggest that the recovery of added N by soybean crops was limited.
- Recommendation The authors recommend reassessing application rates or stabilising N applied from fermentation residues.