Below are several citations about root/shoot ratios in rye and vetch. I did
not look more closely to see if they'll answer your question. Also, see Paul
Shipley in your department at the University of Maryland (Nutrient
Management program). He reviewed the literature as part of his M.S. on
N-scavenging by cover crops. The published report includes *estimates* from
the literature on the percentage of biomass expected in the roots:
AU: Shipley,-P.R.; Meisinger,-J.J.; Decker,-A.M.
TI: Conserving residual corn fertilizer nitrogen with winter cover
crops.
SO: Agron-j. Madison, Wis. : American Society of Agronomy, [1949-.
Sept/Oct 1992. v. 84 (5) p. 869-876.
CN: DNAL 4-AM34P
LA: English
Record 1 of 7 - AGRICOLA 1992-1997
AU: Reynolds,-E.B.; Smith,-J.C.
TI: Effect of fertilizers and lime on emergence, nitrogen content, and
ratio of roots to tops in hairy vetch.
SO: Agron-j. Madison, Wis. : American Society of Agronomy, [1949-. Aug
1950. v. 42 (8) p. 387-389.
CN: DNAL 4-AM34P
LA: English
Record 2 of 7 - AGRICOLA 1992-1997
AU: Mwaja,-V.N.; Masiunas,-J.B.; Weston,-L.A.
TI: Effects of fertility on biomass, phytotoxicity, and allelochemical
content of cereal rye.
SO: J-chem-ecol. New York, N.Y. : Plenum Publishing Corporation. Jan 1995.
v. 21 (1) p. 81-96.
CN: DNAL QD415.A1J6
LA: English
Record 3 of 7 - AGRICOLA 1992-1997
AU: Paterson,-E.; Rattray,-E.A.S.; Killham,-K.
TI: Effect of elevated atmospheric CO2 concentration on C-partitioning and
rhizosphere C-flow for three plant species.
SO: Soil-biol-biochem. Exeter : Elsevier Science Ltd. Feb 1996. v. 28 (2)
p. 195-201.
CN: DNAL S592.7.A1S6
LA: English
Record 4 of 7 - AGRICOLA (1984 - 12/91)
AU: White,-P.J.; Cooper,-H.D.; Clarkson,-D.T.; Earnshaw,-M.J.;
Loughman,-B.C.
TI: Effects of low temperature on growth and nutrient accumulation in rye
(Secale cereale) and wheat (Triticum aestivum).
SO: Ann-Bot. London : Academic Press. July 1991. v. 68 (1) p. 23-31.
CN: DNAL 450-AN7
LA: English
Record 5 of 7 - AGRICOLA (1984 - 12/91)
AU: White,-P.J.; Earnshaw,-M.J.; Clarkson,-D.T.
TI: The effect of shoot-root ratio and temperature on K+ influx in rye.
SO: Dev-Plant-Soil-Sci. Dordrecht : Kluwer Academic Publishers. 1989. v. 36
p. 203-206. ill.
CN: DNAL S596.7.D4
LA: English
Record 6 of 7 - AGRICOLA 1998/01-1999/03
AU: Kasai,-M.; Nakamura,-T.; Kudo,-N.; Maeshima,-M.; Sawada,-S.
TI: The activity of the root vacuolar H+-pyrophosphatase in rye plants
grown under conditions deficient in mineral nutrients.
SO: Plant-cell-physiol. Kyoto, Japan : Japanese Society of Plant
Physiologists. Aug 1998. v. 39 (8) p. 890-894.
CN: DNAL 450-P699
LA: English
Record 7 of 7 - AGRICOLA 1998/01-1999/03
AU: White,-P.J.
TI: The regulation of K+ influx into roots of rye (Secale cereale L.)
seedlings by negative feedback via the K+ flux from shoot to root in the
phloem.
SO: J-exp-bot. Oxford : Oxford University Press. Dec 1997. v. 48 (317) p.
2063-2073.
CN: DNAL 450-J8224
LA: English
_______________________________________________
Date: Fri, 23 Apr 1999 00:03:50 -0400 (EDT)
From: joel b gruver <jgruv@wam.umd.edu>
Subject: lignin content of roots
Hello to all...
I am wondering if anyone can refer me to literature describing
any of the following:
Root:shoot ratios for cover crops (specifically cereal rye and hairy
vetch)
_________________________________________
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SAN Coordinator
c/o AFSIC, Room 304
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