Agriculture Reference
In-Depth Information
( Datura stramonium L.) in soyabeans ( Glycine max (L.) Merr.). Weed Research ,26,
215-23.
Weaver, S.E., & Tan, C.S.(1983).Critical period of weed interference in transplanted
tomatoes ( Lycopersicon esculentum ): growth analysis. Weed Science ,31, 476-81.
Weaver, S.E., & Tan, C.S.(1987).Critical period of weed interference in field-seeded
tomatoes and its relation to water stress and shading. Canadian Journal of Plant
Science ,67, 575-83.
Weaver, S.E., Kropff, M.J., & Groeneveld, R.M.W.(1992).Use of ecophysiological models
for crop-weed interference: the critical period of weed interference. Weed Science ,
40, 302-7.
Weber, C.R., & Staniforth, D.W.(1957).Competitive relationships in variable weed and
soybean stands. Agronomy Journal ,49, 440-4.
Weil, R.R.(1982).Maize-weed competition and soil erosion in unweeded maize. Tropical
Agriculture (Trinidad) ,59, 207-13.
Weiner, J.(1990).Asymmetric competition in plant populations. Trends in Ecology and
Evolution ,5, 360-4.
Weiner, J., & Thomas, S.C.(1986).Size variability and competition in plant monocultures.
Oikos ,47, 211-22.
Wibberley, E.J.(1989). Cereal Husbandry .Ipswich, UK: Farming Press.
Wicks, G.A., Nordquist, P.T., Hanson, G.E., & Schmidt, J.W.(1994).Influence of winter
wheat ( Triticum aestivum ) cultivars on weed control in sorghum ( Sorghum bicolor ).
Weed Science ,42, 27-34.
Wicks, G.A., Ramsel, R.E., Nordquist, P.T., Schmidt, J.W., & Challaiah.(1986).Impact of
wheat cultivars on establishment and suppression of summer annual weeds.
Agronomy Journal ,78, 59-62.
Wiese,A.F., Collier, J.W., Clark, L.E., & Havelka, U.D. (1964).Effect of weeds and cultural
practices on sorghum yields. Weeds ,12, 209-11.
Willey, R.W., & Heath, S.B.(1969).The quantitative relationships between plant
population and crop yield. Advances in Agronomy ,21, 281-321.
William, R.D., & Warren, G.F.(1975).Competition between purple nutsedge and
vegetables. Weed Science ,23, 317-23.
Williams, C.F., Crabtree, G., Mack, H.J., & Laws,W.D.(1973).Effect of spacing on weed
competition in sweet corn, snap beans, and onions. Journal of the American Society for
Horticultural Science .98, 526-9.
Wilson, B.J., & Wright, K.J.(1990).Predicting the growth and competitive effects of annual
weeds in wheat. Weed Research ,30, 201-11.
Wilson, R.G.Jr.,Wicks, G.A., & Fenster, C.R. (1980).Weed control in field beans ( Phaseolus
vulgaris ) in western Nebraska. Weed Science ,28, 295-9.
Woolley, J.N., & Smith, M. E.(1986).Maize plant types suitable for present and possible
bean relay systems in Central America. Field Crops Research ,15, 3-16.
Woon, C.K.(1987).Effect of two row spacings and hemp sesbania competition on
sunflower. Journal of Agronomy and Crop Science ,159, 15-20.
Wu, H., Pratley, J., Lemerle, D., & Haig,T.(1999).Crop cultivars with allelopathic capability.
Weed Research ,39, 171-80.
Yelverton, F.H., & Coble, H.D.(1991).Narrow row spacing and canopy formation reduces
weed resurgence in soybeans ( Glycine max ). Weed Technology ,5, 169-74.
Search WWH ::




Custom Search