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Filtering by: Subject Soil temperature Degree Name Doctor of Philosophy (Ph.D.) Subject Soil temperature

The effect of preplant nitrogen fertilization and soil temperature on biological nitrogen fixation and yield of alfalfa (Medicago sativa L.)

Creator:

Shuler, Philip E.

Abstract:

The usefulness of preplant nitrogen (N) in establishing alfalfa in colder production areas has not been well characterized. This study was conducted to determine the effect of preplant N and soil temperature on yield, percent N derived from biological nitrogen fixation (PBNF), and shoot N concentration in alfalfa (Medicago sativa...

Resource Type:

Dissertation

Full Text:

, 1991. Title: The Effect of Preplant Nitrogen Fertilization and Soil Temperature on Biological
Distinguishing biological and physical controls on soil respiration

Creator:

Phillips, Claire L.

Abstract:

Soil respiration, or the combined CO₂ emissions from roots and soil microorganisms, constitutes one of the largest losses of carbon (C) from terrestrial ecosystems. The major drivers of soil respiration, which include soil moisture, temperature, and substrate quality, have been known for some time. Nevertheless, correlations between these drivers and...

Resource Type:

Dissertation

Full Text:

ecosystems. The major drivers of soil respiration, which include soil moisture, temperature, and substrate