Full TGIF Record # 83784
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Web URL(s):http://onlinelibrary.wiley.com/doi/10.1046/j.1365-3180.2002.00301.x/epdf
    Last checked: 10/13/2015
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Publication Type:
i
Refereed
Author(s):Heisel, T.; Andreasen, C.; Christensen, S.
Author Affiliation:Heisel: Department of Crop Protection, Danish Institute of Agricultural Sciences, Research Centre Flakkebjerg, Slagelse, Denmark; Andreasen: Department of Agricultural Sciences, The Royal Veterinary and Agricultural University, Taastrup, Denmark; and Christensen: Department of Agricultural Engineering, Danish Institute of Agricultural Sciences, Horsens, Denmark
Title:Sugarbeet yield response to competition from sinapis arvensis or lolium perenne growing at three different distances from the beet and removed at various times during early growth
Source:Weed Research. Vol. 42, No. 5, October 2002, p. 406-413.
Publishing Information:Oxford: Blackwell Scientific Publications
# of Pages:8
Keywords:TIC Keywords: Sinapis arvensis; Lolium perenne; Weeds; Dry weight; Crops; Competition; Growth conditions; Weed competition; Percent living ground cover
Abstract/Contents:"A sugarbeet field experiment was conducted in 1999 and 2000 to measure beet yield where Sinapis arvensis or Lolium perenne were growing in the crop row at 2, 4 or 8 cm from the beet plants. The weeds were removed by cutting once in the growing season in either late May, mid-June or early July. The number of neighbouring beet plants to every target beet plant was recorded. Projected leaf cover of a subset of the data with non-cut weeds was analysed by using image analysis to investigate whether this could be used to predict beet yield loss early in the growing season. Increasing the distance between beet and weed from 2 to 8 cm increased the beet yield significantly by an average of 20%, regardless of weed species. The dry weight of non-cut and re-growing weeds at harvest time decreased when cutting was postponed to the period between mid-June and early July. The number of neighbours described a sigmoidal yield decline of the single beet plants. Results from image analysis showed that approximately 33 g of beet yield was lost in October/November for each per cent relative projected leaf cover of the weeds in May, despite variation in growing conditions. The results are discussed in relation to potentials for robotic in-row weed control."
Language:English
References:25
Note:Figures
Tables
Graphs
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Heisel, T., C. Andreasen, and S. Christensen. 2002. Sugarbeet yield response to competition from sinapis arvensis or lolium perenne growing at three different distances from the beet and removed at various times during early growth. Weed Res. 42(5):p. 406-413.
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Web URL(s):
http://onlinelibrary.wiley.com/doi/10.1046/j.1365-3180.2002.00301.x/epdf
    Last checked: 10/13/2015
    Requires: PDF Reader
    Access conditions: Item is within a limited-access website
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