Weed evolution and community structure - Ecological Management of Agricultural Weeds - page 485

exceed the boundaries of farms and the attention span of individual growers.
Consequently, the extension of human understanding of weeds into larger
scales will make management decisions at the community, regional, and
national levels both practical and desirable. Developing a higher-level theory
of weeds probably represents the greatest challenge for weed science in the
coming century. Implementation of that understanding by farmers, commu-
nities, and government agencies may prove equally challenging.
REFERENCES
Abbas, H.K., Pantone, D.J., & Paul, R. N.(1999).Characteristics of multiple-seeded
cocklebur: a biotype of common cocklebur ( Xanthium strumarium L.). Weed
Technology ,13, 257-63.
Allard, R.W.(1963).Evidence for genetic restriction of recombination in the lima bean.
Genetics ,48, 1389-95.
Allard, R.W.(1965).Genetic systems associated with colonizing ability in predominantly
self-pollinated species.In The Genetics of Colonizing Species , Proceedings of the 1st
International Union of Biological Sciences Symposia on General Biology , ed.H.G.Baker &
G.L.Stebbins, pp.49-75.New York: Academic Press.
Allard, R.W., & Hansche, P.E.(1964).Some parameters of population variability and their
implications in plant breeding. Advances in Agronomy ,16, 281-325.
Altieri, M.A., & Liebman, M.(1986).Insect, weed, and plant disease management in
multiple cropping systems.In Multiple Cropping Systems , ed.C.A.Francis, pp.
182-218.New York: Macmillan.
Andow, D.A.(1991).Vegetational diversity and arthropod population response. Annual
Review of Entomology ,36, 561-86.
Andreasen, C., Stryhn, H., & Streibig, J.C.(1996).Decline of the flora in Danish arable
fields. Journal of Applied Ecology ,33, 619-26.
Ashton, P.A., & Abbott, R.J.(1992).Multiple origins and genetic diversity in the newly
arisen allopolyploid species, Senecio cambrensis Rosser (Compositae). Heredity ,68,
25-32.
Atwood, S.S.(1940).Genetics of cross-incompatibility among self-incompatible plants of
Trifolium repens . Journal of the American Society of Agronomy ,32, 955-68.
Atwood, S.S.(1942).Oppositional alleles causing cross-incompatibility in Trifolium repens .
Genetics ,27, 333-8.
Bailey, L. H., & Bailey, E.Z.(1930). Hortus: AConcise Dictionary of Gardening , General
Horticulture and Cultivated Plants in North America .New York: Macmillan.
Bailey, L. H., & Bailey, E.Z.(1941). Hortus Second: AConcise Dictionary of Gardening , General
Horticulture and Cultivated Plants in North America .New York: Macmillan.
Bailey, L. H., & Bailey, E.Z., revised and expanded by the staff of the Liberty Hyde Bailey
Hortorium (1976). Hortus Third: AConcise Dictionary of Gardening , General Horticulture
and Cultivated Plants in North America .New York: Macmillan.
Baker, H.G.(1962).Weeds: native and introduced. Journal of the California Horticultural
Society ,23, 97-104.
Baker, H.G.(1965).Characteristics and modes of origin of weeds. In The Genetics of
Colonizing Species , Proceedings of the 1st International Union of Biological Sciences