🚀 go-pugleaf

In article <1992Jan2.175611@spruce.gsfc.nasa.gov> knox@spruce.gsfc.nasa.gov (Robert Knox) writes:
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>3) Many wild (non-agricultural) plants not only thrive in
>environments with very low levels of detectable nitrate in 
>the soil, but take up ammonium in preference to nitrate if
>both are present.
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>Some useful references:
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>Nobel, P.S. 1991. Physiochemical and environmental plant 
>physiology.  Academic Press, San Diego.
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>Fitter, A.H. and R.K.M. Hay. 1987. Environmental physiology
>of plants, 2nd Ed.  Academic Press, London.
>
>Charles-Edwards, D.A., D. Doley, G.M. Rimmington. 1986. 
>Modeling plant growth and development. Academic Press,
>Syndey. --this one is closest to having a suitable simple 
>uptake model (pp. 144-146).
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>Haynes, R.J., K.C. Cameron, K.M. Goh, R.R. Sherlock. 1986.
>Mineral nitrogen in the plant--soil system. Academic Press,
>Orlando. --see chapter 6: Uptake and assimilation of mineral
>nitrogen by plants, text pp. 303-358, references pp. 358-378.
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You have me curious.  Which plants prefer
ammonium?  Is there a causal, or coinci-
dental, relation with domestication?  Does
one of these references particularly ad-
dress itself to agronomic concerns?
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Cameron Laird				+1 713-579-4613
cl@lgc.com (cl%lgc.com@uunet.uu.net)	+1 713-996-8546