Possibly invasive new bioenergy crop Silphium perfoliatum: growth and reproduction are promoted in moist soil.

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The effect of native and introduced biofuel crops on the composition of soil biota communities.

Heděnec, P., Novotný, D., Usthacek˜ak, S., Cajthaml, T., Slejška, A., Šimáčková, H., Honzík, R., Kovářová, M., Frouz, J., (2014). Biomass and Bioenergy 60, 137-146. Elsevier Ltd, Oxford, UK. English language

Computing the biomass potentials for maize and two alternative energy crops, triticale and cup plant (Silphium perfoliatum L.), with the crop model BioSTAR in the region of Hannover (Germany).

Bauböck, R., Karpenstein-Machan, M., Kappas, M., (2014). Environmental Sciences Europe 26(19), (10 August 2014). SpringerOpen, Heidelberg, Germany. English language

Three non-native plant species newly documented for New Hampshire.

Nichols, W. F., (2012). Rhodora 114(958), 209-213. New England Botanical Club, Lawrence, USA. English language

Attractiveness of Michigan native plants to arthropod natural enemies and herbivores.

Fiedler, A. K., Landis, D. A., (2007). Environmental Entomology 36(4), 751-765. Entomological Society of America, Lanham, USA. English language

Enrichment of crop flora with new species of fodder plants.

Varlamova, K. A., (1984). Vestnik Sel'skokhozyaĭstvennoĭ Nauki, Moscow, USSR(No.4), 87-96. Russian language

Enrichment of forest-grasslands with fodder plants.

Latyshenko, M. D., (1975). Nauchnye Trudy, Ukrainskaya Sel'skokhozyaistvennaya Akademiya(No.146), 109-112. Russian language

Promising high-protein fodder and silage plants in the Lithuanian SSR.

Marchyulenis, V. I., (1973). Poleznye rasteniya Pribaltiiskikh respublik i Belorussii., 107-109. Russian language

A study of new fodder crops.

Terskikh, R. S., (1977). Agrotekhnika, selektsiya i semenovodstvo zernovykh i kormovykh kul'tur v Vostochnoi Sibiri., 63-69. Russian language

Weeds of the North Central States.

USA, University of Illinois External factsheets, University of Illinois, 7 pp., English language