Nitrogen mineralization from selected /sup 15/N-labelled crop residues and humus as affected by inorganic nitrogen

Thesis/Dissertation · Thu Jan 01 00:00:00 EST 1987

OSTI ID:5212164

Santos, J A

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
• Resource Relation: Other Information: Thesis (Ph. D.)
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
NITRATES
MINERALIZATION
CLOVER
CROPS
HUMUS
NITROGEN 15
RESIDUES
RYE
SOILS
TRACER TECHNIQUES
VICIA
WHEAT
BACTERIA
CEREALS
GRASS
ISOTOPE APPLICATIONS
ISOTOPES
LEGUMINOSAE
LIGHT NUCLEI
MICROORGANISMS
NITROGEN COMPOUNDS
NITROGEN ISOTOPES
NUCLEI
ODD-EVEN NUCLEI
OXYGEN COMPOUNDS
PLANTS
RHIZOBIUM
STABLE ISOTOPES
510200* - Environment
Terrestrial- Chemicals Monitoring & Transport- (-1989)
510101 - Environment
Terrestrial- Basic Studies- Radiometric Techniques- (-1989)