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 Research

Volumn 42, Issue 5, 2002, Pages 406-413

  Heisel, T ^a   Andreasen, C ^b   Christensen, S ^a  

^a DANISH INSTITUTE OF AGRICULTURAL SCIENCES   (Denmark)

^b UNIVERSITY OF COPENHAGEN   (Denmark)

Author keywords

Image analysis; Leaf cover; Weed cutting

Indexed keywords

COMPETITION (ECOLOGY); IMAGE ANALYSIS; SUGAR BEET; WEED; YIELD RESPONSE;

BETA VULGARIS SUBSP. VULGARIS; FUCUS; LOLIUM; LOLIUM PERENNE; SINAPIS; SINAPIS ARVENSIS;

EID: 0036773806     PISSN: 00431737     EISSN: None     Source Type: Journal    
DOI: 10.1046/j.1365-3180.2002.00301.x     Document Type: Article

References (25)

1. Andreasen C, Rudemo M & Sevestre S (1997) Assesment of weed density at an early stage by use of image processing. Weed Research 37, 5-18.
2. Ascard J, Hallefält F & Olsson R (1995) System for ogräsbekämpning i sockerbetor (Chapt. 21). Försöksverksamhet i Sockerbetor 1995, 1-11. SockerNäringens SamarbeitsKomitté, Arlöv, Sweden.
3. Bontsema J, Van Asselt CJ, Lempens PWJ & Van Straten G (1998) Intra-row weed control: a mechatronics approach. In: Control Applications and Ergonomics in Agriculture. Proceedings 1st IFAC Workshop, June 15-17. (eds N Sigrimis & P Groubus), 93-97. Athens, Greece.
4. Farahbakhsh A & Murphy KJ (1986) Comparative studies of weed competition in sugarbeet. Aspects of Applied Biology 13, 11-16.
5. 2 laser. Weed Research 41, 19-30.
6. Henderson CR (1982) Analysis of covariance in the mixed model: Higher-level, nonhomogeneous, and random regression. Biometrics 38, 623-640.
7. Jones PA & Blair AM (1996) Mechanical damage to kill weeds, In: Proceedings Second International Weed Control Congress, Copenhagen, Denmark, 949-954.
8. Kropff MJ & Spitters CJT (1991) A simple model of crop loss by weed competition from early observations of relative leaf area of the weeds. Weed Research 31, 97-105.
9. Kropff MJ & Spitters CJT (1993) An eco-physiological model for interspecific competition, applied to the influence of Chenopodium album L. on sugarbeet. I. Model description and parameterization. Weed Research 32, 437-450.
10. Lee WS, Slaughter DC & Giles DK (1999) Robotic weed control system for tomatoes. Precision Agriculture 1, 95-113.
11. Lindhard E & Jørgensen M (1928) Om betydningen af spring i roemarkens plantebestand og om udbyttets afhængighed af plantebestandens tæthed. Tidskrift for Planteavl 34, 565-595.
12. Lotz LAP, Kropff MJ, Wallinga J, Bos HJ & Groeneveld MW (1994) Techniques to estimate relative leaf area and cover of weeds in crops for yield loss prediction. Weed Research 34, 167-175.
13. Lotz LAP, Christensen C, Cloutier D et al. (1996) Prediction of the competitive effects of weeds on crop yields based on the relative leaf area of weeds. Weed Research 36, 93-101.
14. Nawroth P & Estler M (1996) Mechanische unkrautregulierung ohne eingriff in das bodengefüge-gerätetechnik, prüfstandsversuche, ergebnisse. Zeitschrift für Pflanzenkrankheiten und Pflanzenschutz. Sonderheft XV 1996, 423-430.
15. Ngouajio M, Lemieux C & Leroux GD (1999) Prediction of com (Zea mays) yield loss from early observations of the relative projected leaf cover and the relative leaf cover of the weeds. Weed Science 47, 297-304.
16. Pike DR, Stoller EW & Wax LM (1990) Modelling soybean growth and canopy apportionment in weed-soybean (Glycine max). Weed Science 38, 522-527.
17. Russ JC (1995) The Image Processing Handbook. CRC Press, Florida, USA.
18. Sarpe N & Torge C (1980) Der einfluss einiger unkrautgesellschaften mit dominanten arten der gattungen sinapis, setaria, erigeron, amaranthus, cirsium und convolvulus auf die. Wurzelproduktion der zuckerrübe. Tagungsbericht der Landwirtschaftliche Wissenschaft, DDR, Berlin 182, 105-112.
19. SAS (2000) Statistical Analysis Software, Version 8. SAS Institute, Cary, NC, USA.
20. Soille P (2000) Morphological image analysis applied to crop field mapping. Image and Vision Computing 18, 1025-1032.
21. Streibig JC, Rudemo M & Jensen JE (1993) Dose-response curves and statistical models. In: Herbicide Bioassays (eds JC Streibig & P Kudsk), 29-55. CRC Press, Boca Raton, FL, USA.
22. Tillett ND, Hague T & Marchant JA (1998) A robotic system for plant-scale husbandry. Journal of Agricultural Engineering Research 69, 169-178.
23. Weiner J (1982) A neighbourhood model of annual plant interference. Ecology 63, 1237-1241.
24. Weiner J (1984) Neighbourhood interference amongst Pinus rigida individuals. Journal of Ecology 72, 183-195.
25. Weisberg S (1985) Applied Linear Regression. Wiley series in probability and mathematical statistics. John Wiley & Sons, New York, USA.