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Prediction of Black and Eastern Black Nightshade (Solanum nigrum and S. ptycanthum) Growth Using Degree-Days

Published online by Cambridge University Press:  12 June 2017

Milton E. McGiffen Jr.  and
John B. Masiunas
Milton E. McGiffen Jr.
Affiliation:
Dep. Hortic., Univ. Illinois, 1201 W. Gregory, Urbana, IL 61801–3838
John B. Masiunas
Affiliation:
Dep. Hortic., Univ. Illinois, 1201 W. Gregory, Urbana, IL 61801–3838
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Abstract

The objectives were to compare the growth of black and eastern black nightshade and develop predictive models for their growth. Black and eastern black nightshade were planted on June 3 and 23, and July 12 in 1988 and May 28, June 17, and July 10 in 1989. Exponential models were strongly correlated with the growth of both species across all planting dates. Eastern black nightshade produced more biomass than black nightshade, although weight of berries was equivalent. Leaf area per plant 60 d after planting was five times greater for eastern black nightshade than black nightshade. Eastern black nightshade responded to self-shading by increasing specific leaf area.

Keywords

Black nightshade, Solarium nigrum L. # SOLNIeastern black nightshade, S. ptycanthum Dun. # SOLPTBiomass partitioningspecific leaf areacompetitionweed managementSOLNISOLPT
Type
Weed Biology and Ecology
Information
Weed Science , Volume 40 , Issue 1 , March 1992 , pp. 86 - 89
Copyright
Copyright © 1992 by the Weed Science Society of America 

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