Nitrogen mineralization from selected /sup 15/N-labelled crop residues and humus as affected by inorganic nitrogen
Thesis/Dissertation
·
OSTI ID:5212164
The use of cover crops or crop residues as a source of N to succeeding crops has become a matter of increasing importance for economic and environmental reason. Greenhouse and field studies were conducted to determine the N contribution of four /sup 15/N labelled crop residues, rye (Secale cereale L.), wheat (Triticum aestivum L.), crimson clover (Trifolium encarnatum L.), and hairy vetch (Vicia sativa L.), to successive crops and to evaluate the effect of different organic (ON) and inorganic N (IN) combinations on mineralization of the above residues. Total /sup 15/N recovery from the residues ranged from 51% to 85% and 4% to 74% for the greenhouse and field studies, respectively.
- Research Organization:
- Florida Univ., Gainesville (USA)
- OSTI ID:
- 5212164
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
510101 -- Environment
Terrestrial-- Basic Studies-- Radiometric Techniques-- (-1989)
510200* -- Environment
Terrestrial-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
BACTERIA
CEREALS
CLOVER
CROPS
GRASS
HUMUS
ISOTOPE APPLICATIONS
ISOTOPES
LEGUMINOSAE
LIGHT NUCLEI
MICROORGANISMS
MINERALIZATION
NITRATES
NITROGEN 15
NITROGEN COMPOUNDS
NITROGEN ISOTOPES
NUCLEI
ODD-EVEN NUCLEI
OXYGEN COMPOUNDS
PLANTS
RESIDUES
RHIZOBIUM
RYE
SOILS
STABLE ISOTOPES
TRACER TECHNIQUES
VICIA
WHEAT
Terrestrial-- Basic Studies-- Radiometric Techniques-- (-1989)
510200* -- Environment
Terrestrial-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
BACTERIA
CEREALS
CLOVER
CROPS
GRASS
HUMUS
ISOTOPE APPLICATIONS
ISOTOPES
LEGUMINOSAE
LIGHT NUCLEI
MICROORGANISMS
MINERALIZATION
NITRATES
NITROGEN 15
NITROGEN COMPOUNDS
NITROGEN ISOTOPES
NUCLEI
ODD-EVEN NUCLEI
OXYGEN COMPOUNDS
PLANTS
RESIDUES
RHIZOBIUM
RYE
SOILS
STABLE ISOTOPES
TRACER TECHNIQUES
VICIA
WHEAT