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N2(C2H2−C2H4) fixation in two species of Ceanothus seedlings in second year postfire chaparral (1988)

Ellis, B. A. ; Kummerow, J.

Springer

Plant and soil 109 (1988), S. 207-213

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ISSN: 1573-5036

Keywords: Ceanothus ; chaparral ; nitrogen fixation

Source: Springer Online Journal Archives 1860-2000

Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition

Notes: Abstract Nitrogen fixation in excised root nodules of 2-year-old, postfireCeanothus tomentosus andC. leucodermis seedlings was measured over an 8-month period using the acetylene reduction method. High levels of NO3−N and NH4−N present in postfire soils were limited to the upper 10 cm and did not inhibit nodulation in these deeper-rooting seedlings. Decreases in acetylene reduction activity occurred with decreased soil moisture and increased soil temperature. Nitrogen gains from these two Ceanothus shrub seedlings totalled 1.6 kg N ha−1 yr−1.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/BF02202086

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