Svend Christensen

Research output

Research output per year 1993 2003 2008 2011 2013 2014 2015 2016 2019 2020

• 28 Journal article
• 2 Article in proceedings
• 2 Conference abstract in proceedings
• 1 Book chapter
• 2 More
  • 1 Conference article
  • 1 Review

Research output per year

Research output per year

Search results

• 2020

  A new method to estimate the spatial correlation between planned and actual patch spraying of herbicides

  Rasmussen, J., Azim, S., Nielsen, J., Mikkelsen, B. F., Hørfarter, R. & Christensen, S., 1 Aug 2020, In: Precision Agriculture.

  Research output: Contribution to journal › Journal article › Research › peer-review

  3 Citations (Scopus)
• 2019

  Can reproducible comparisons of cereal genotypes be generated in field experiments based on UAV imagery using RGB cameras?

  Svensgaard, J., Jensen, S. M., Westergaard, J. C., Nielsen, J., Christensen, S. & Rasmussen, J., 1 May 2019, In: European Journal of Agronomy. 106, p. 49-57

  Research output: Contribution to journal › Journal article › Research › peer-review

  • unmanned aerial vehicles 100%
  • genotype 77%
  • cereal 77%
  • reproducibility 72%
  • cameras 71%
  8 Citations (Scopus)

• Manual geo-rectification to improve the spatial accuracy of ortho-mosaics based on images from consumer-grade unmanned aerial vehicles (UAVs)

  Azim, S., Rasmussen, J., Nielsen, J., Gislum, R., Laursen, M. S. & Christensen, S., 1 Dec 2019, In: Precision Agriculture.

  Research output: Contribution to journal › Journal article › Research › peer-review

  • unmanned aerial vehicles 100%
  • Photogrammetry 72%
  • Software 53%
  • photogrammetry 43%
  • Geographic Information Systems 31%
  4 Citations (Scopus)
• 2018

  Reviewing research priorities in weed ecology, evolution and management: a horizon scan

  Neve, P., Barney, J. N., Buckley, Y., Cousens, R. D., Graham, S., Jordan, N. R., Lawton-Rauh, A., Liebman, M., Mesgaran, M. B., Schut, M., Shaw, J., Storkey, J., Baraibar, B., Baucom, R. S., Chalak, M., Childs, D. Z., Christensen, S., Eizenberg, H., Fernandez-Quintanilla, C., French, K., & 15 othersHarsch, M., Heijting, S., Harrison, L., Loddo, D., Macel, M., Maczey, N., Merotto, A. . J., Mortensen, D., Necajeva, J., Peltzer, D. A., Recasens, J., Renton, M., Riemens, M., Sønderskov, M. & Williams, M., 2018, In: Weed Research. 58, 4, p. 250-258 9 p.

  Research output: Contribution to journal › Review › peer-review

  • weed 100%
  • weeds 71%
  • ecology 68%
  • weed control 41%
  • exercise 27%
  31 Citations (Scopus)

  123 Downloads (Pure)
• 2016

  Are vegetation indices derived from consumer-grade cameras mounted on UAVs sufficiently reliable for assessing experimental plots?

  Rasmussen, J., Ntakos, G., Nielsen, J., Svensgaard, J., Poulsen, R. N. & Christensen, S., 1 Mar 2016, In: European Journal of Agronomy. 74, p. 75-92 18 p.

  Research output: Contribution to journal › Journal article › Research › peer-review

  • vegetation index 100%
  • cameras 78%
  • unmanned aerial vehicles 72%
  • reflectance 52%
  • bidirectional reflectance 49%
  129 Citations (Scopus)

• Contribution of the seed microbiome to weed management

  Müller-Stöver, D. S., Nybroe, O., Baraibar, B., Loddo, D., Eizenberg, H., French, K., Sønderskov, M., Neve, P., Peltzer, D. A., Maczey, N. & Christensen, S., 2016, In: Weed Research. 56, 5, p. 335-339 5 p.

  Research output: Contribution to journal › Journal article › Research › peer-review

  • weed 100%
  • microbiome 85%
  • weed control 82%
  • seed 76%
  • microorganism 53%
  8 Citations (Scopus)

• Ecologically sustainable weed management: how do we get from proof-of-concept to adoption?

  Liebman, M., Baraibar, B., Buckley, Y., Childs, D., Christensen, S., Cousens, R., Eizenberg, H., Heijting, S., Loddo, D., Merotto, A., Renton, M. & Riemens, M., 1 Jul 2016, In: Journal of Applied Ecology. 26, 5, p. 1352-1369 18 p.

  Research output: Contribution to journal › Journal article › Research › peer-review

  • weed 100%
  • weed control 82%
  • weeds 71%
  • managers 43%
  • farmers 31%
  40 Citations (Scopus)

• Transdisciplinary weed research: new leverage on challenging weed problems?

  Jordan, N., Schut, M., Graham, S., Barney, J. N., Childs, D. Z., Christensen, S., Cousens, R. D., Davis, A. S., Eizenberg, H., Ervin, D. E., Fernandez-Quintanilla, C., Harrison, L. J., Harsch, M. A., Heijting, S., Liebman, M., Loddo, D., Mirsky, S. B., Riemens, M., Neve, P., Peltzer, D. A., & 4 othersRenton, M., Williams, M., Recasens, J. & Sonderskov, M., 2016, In: Weed Research. 56, 5, p. 345-358 14 p.

  Research output: Contribution to journal › Journal article › Research › peer-review

  • weed 100%
  • weeds 71%
  • stakeholders 29%
  • ecosystems 19%
  • stakeholder 17%
  12 Citations (Scopus)

  74 Downloads (Pure)
• 2015

  Image-based thresholds for weeds in maize fields

  Asif, A., Streibig, J. C., Christensen, S. & Andreasen, C., 1 Feb 2015, In: Weed Research. 55, 1, p. 26-33 8 p.

  Research output: Contribution to journal › Journal article › Research › peer-review

  • weed 100%
  • maize 78%
  • weeds 71%
  • corn 54%
  • competitive ability 30%
  12 Citations (Scopus)

• Phenotyping in the fields: dissecting the genetics of quantitative traits and digital farming

  Grosskinsky, D. K., Pieruschka, R., Svensgaard, J., Rascher, U., Christensen, S., Schurr, U. & Roitsch, T. G., 1 Sept 2015, In: New Phytologist. 207, p. 950-952 3 p.

  Research output: Contribution to journal › Conference article › Research › peer-review

  26 Citations (Scopus)

• Plant phenomics and the need for physiological phenotyping across scales to narrow the genotype-to-phenotype knowledge gap

  Grosskinsky, D. K., Svensgaard, J., Christensen, S. & Roitsch, T. G., 1 Sept 2015, In: Journal of Experimental Botany. 66, 18, p. 5429-5440 12 p.

  Research output: Contribution to journal › Journal article › Research › peer-review

  107 Citations (Scopus)
• 2014

  Development of a mobile multispectral imaging platform for precise field phenotyping

  Svensgaard, J., Roitsch, T. G. & Christensen, S., 2014, In: Agronomy. 4, 3, p. 322-336 15 p.

  Research output: Contribution to journal › Journal article › Research › peer-review

  • image analysis 100%
  • phenotype 79%
  • normalized difference vegetation index 62%
  • application coverage 60%
  • solar radiation 41%

• OvaSpec - a vision-based instrument for assessing concentration and developmental stage of Trichuris suis parasite egg suspensions

  Bruun, J. M., Carstensen, J. M., Vejzagic, N., Christensen, S., Roepstorff, A. & Kapel, C. M. O., 1 Oct 2014, In: Computers in Biology and Medicine. 53, p. 94-104 11 p.

  Research output: Contribution to journal › Journal article › Research › peer-review

  • Parasites 100%
  • Trichuris 98%
  • Eggs 75%
  • Ovum 71%
  • Suspensions 61%
  8 Citations (Scopus)

• Prospects for site specific weed management

  Christensen, S., Rasmussen, J., Pedersen, S. M., Dorado, J. & Fernandez-Quintanilla, C., 2014, Second International Conference on Robotics and associated High-technologies and Equipment for Agriculture and forestry (RHEA-2014): New trends in mobile robotics, perception and actuation for agriculture and forestry. Gonzales-de-Santos, P. & Ribeiro, A. (eds.). p. 541-549 9 p.

  Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research

  • weed control 100%
  • weeds 86%
  • ecology 39%
  • testing 20%

• Sensor-based assessment of herbicide effects

  Streibig, J. C., Rasmussen, J., Andújar, D., Andreasen, C., Berge, T. W., Chachalis, D., Dittmann, T., Gerhards, R., Giselsson, T. M., Hamouz, P., Jaeger-Hansen, C., Jensen, K., Jørgensen, R. N., Keller, M., Laursen, M., Midtiby, H. S., Nielsen, J., Müller, S., Nordmeyer, H., Peteinatos, G., & 4 othersPapadopoulos, A., Svensgaard, J., Weis, M. & Christensen, S., 2014, In: Weed Research. 54, 3, p. 223-233 11 p.

  Research output: Contribution to journal › Journal article › Research › peer-review

  • herbicide 100%
  • sensors (equipment) 91%
  • herbicides 79%
  • sensor 65%
  • crop 59%
  9 Citations (Scopus)
• 2013

  Deconstructing crop processes and models via identities

  Porter, J. R. & Christensen, S., Nov 2013, In: Plant, Cell and Environment. 36, 11, p. 1919-1925 7 p.

  Research output: Contribution to journal › Journal article › Research › peer-review

  • crop models 100%
  • Droughts 99%
  • Temperature 90%
  • Climate Change 87%
  • simulation models 85%
  11 Citations (Scopus)

• Potential uses of small unmanned aircraft systems (UAS) in weed research

  Rasmussen, J., Nielsen, J., Garcia Ruiz, F. J., Christensen, S. & Streibig, J. C., Aug 2013, In: Weed Research. 53, 4, p. 242-248 7 p.

  Research output: Contribution to journal › Journal article › Research › peer-review

  85 Citations (Scopus)

• Use of sensors for assessment in herbicide trials

  Christensen, S., Andújar, D., Andreasen, C., Berge, T. W., Chachalis, D., Dittmann, T., Gerhards, R., Hamouz, P., Jaeger-Hansen, C., Jensen, K., Jørgensen, R. N., Keller, M., Laursen, M., Midtiby, H. S., Nielsen, J., Müller, S., Nordmeyer, H., Peteinatos, G., Papadopoulos, A., Rasmussen, J., & 3 othersSvensgaard, J., Weis, M. & Streibig, J. C., 2013, Proceedings from 16^th Symposium EWRS. p. 315 1 p.

  Research output: Chapter in Book/Report/Conference proceeding › Conference abstract in proceedings › Research

• Weed Management in Europe at a crossroads - Challenges and opportunities

  Kudsk, P., Bárberi, P., Bastiaans, L., Brants, I., Bohren, C., Christensen, S., Economuo, F., Gerowitt, B., Hatcher, P. E., Melander, B., Neve, P., Pannacci, E., Rubin, B., Streibig, J. C., Torresen, K. & Vurro, M., 2013, Proceedings from 16^th Symposium EWRS. p. 10 1 p.

  Research output: Chapter in Book/Report/Conference proceeding › Conference abstract in proceedings › Research
• 2012

  Monitoring and classifying animal behavior using ZigBee-based mobile ad hoc wireless sensor networks and artificial neural networks

  S. Nadimi, E., Nyholm Jørgensen, R., Blanes-Vidal, V. & Christensen, S., Mar 2012, In: Computers and Electronics in Agriculture. 82, p. 44-54 11 p.

  Research output: Contribution to journal › Journal article › Research › peer-review

  • animal behavior 100%
  • Zigbee 83%
  • neural networks 79%
  • Animals 70%
  • animal welfare 70%
  96 Citations (Scopus)
• 2011

  Energy generation for an ad hoc wireless sensor network-based monitoring system using animal head movement

  S. Nadimi, E., Blanes-Vidal, V., Jørgensen, R. N. & Christensen, S., Feb 2011, In: Computers and Electronics in Agriculture. 75, 2, p. 238-242 5 p.

  Research output: Contribution to journal › Journal article › Research › peer-review

  13 Citations (Scopus)

• Estimation of weeds leaf cover using image analysis and its relationship with fresh biomass yield of maize under field conditions

  Asif, A., Streibig, J. C., Christensen, S. & Andreasen, C., 2011, HAICTA 2011: 5th International Conference on Information and Communication Technologies in Agriculture, Food and Environment. Salampasis, M. & Matopoulos, A. (eds.). Hellenic Association of Information and Communication Technology in Agriculture, Food and Environment (HAICTA), Vol. 1. p. 41-49 9 p.

  Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research

  • image analysis 100%
  • weeds 97%
  • sprayers 87%
  • corn 75%
  • biomass 73%
  2 Citations (Scopus)
• 2009

  Site-specific weed control technologies

  Christensen, S., Søgaard, H. T., Kudsk, P., Nørremark, M., Lund, I., S. Nadimi, E. & Jørgensen, R., 2009, In: Weed Research. 3, 49, p. 233-241 9 p.

  Research output: Contribution to journal › Journal article › Research › peer-review

  125 Citations (Scopus)
• 2008

  A method for building spatial model of annual weed seed dispersal from experimental data and its application to simulating Bromus sterilis population dispersal

  Wang, J., Christensen, S. & Hansen, P. K., 10 Feb 2008, In: Ecological Modelling. 210, 4, p. 446-452 7 p.

  Research output: Contribution to journal › Journal article › Research › peer-review

  3 Citations (Scopus)

• Spraying robots

  Christensen, S., Lund, I. & Olsen, J. H., 2008, International Advances in Pesticide Application. Wellesbourne: Association of Applied Biologists, p. 167-170 4 p.

  Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research › peer-review
• 2006

  The Effect of Laser Treatment as a Weed Control Method

  Mathiassen, S. K., Bak, T., Christensen, S. & Kudsk, P., 20 Oct 2006, In: Biosystems Engineering. 95, 4, p. 497-505 9 p.

  Research output: Contribution to journal › Journal article › Research › peer-review

  39 Citations (Scopus)
• 2004

  Simulation of above-ground suppression of competing species and competition tolerance in winter wheat varieties

  Olesen, J. E., Hansen, P. K., Berntsen, J. & Christensen, S., 8 Oct 2004, In: Field Crops Research. 89, 2-3, p. 263-280 18 p.

  Research output: Contribution to journal › Journal article › Research › peer-review

  54 Citations (Scopus)
• 2003

  A decision algorithm for patch spraying

  Christensen, S., Heisel, T., Walter, M. & Graglia, E., Aug 2003, In: Weed Research. 43, 4, p. 276-284 9 p.

  Research output: Contribution to journal › Journal article › Research › peer-review

  35 Citations (Scopus)

• Real-time weed detection, decision making and patch spraying in maize, sugarbeet, winter wheat and winter barley

  Gerhards, R. & Christensen, S., 18 Nov 2003, In: Weed Research. 43, 6, p. 385-392 8 p.

  Research output: Contribution to journal › Journal article › Research › peer-review

  141 Citations (Scopus)
• 2002

  Spatial correlation between weed species densities and soil properties

  Walter, M., Christensen, S. & Simmelsgaard, S. E., Feb 2002, In: Weed Research. 42, 1, p. 26-38 13 p.

  Research output: Contribution to journal › Journal article › Research › peer-review

  54 Citations (Scopus)
• 2000

  Colour and shape analysis techniques for weed detection in cereal fields

  Pérez, A. J., López, F., Benlloch, J. V. & Christensen, S., Feb 2000, In: Computers and Electronics in Agriculture. 25, 3, p. 197-212 16 p.

  Research output: Contribution to journal › Journal article › Research › peer-review

  261 Citations (Scopus)
• 1996

  Prediction of the competitive effects of weeds on crop yields based on the relative leaf area of weeds

  Lotz, L. A. P., Christensen, S., Cloutier, D., Quintanilla, C. F., Legere, A., Lemieux, C., Lutman, P. J. W., Iglesias, A. P., Salonen, J., Sattin, M., Stigliani, L. & Tei, F., Feb 1996, In: Weed Research. 36, 1, p. 93-101 9 p.

  Research output: Contribution to journal › Journal article › Research › peer-review

  61 Citations (Scopus)
• 1995

  Weed suppression ability of spring barley varieties

  Christensen, S., Aug 1995, In: Weed Research. 35, 4, p. 241-247 7 p.

  Research output: Contribution to journal › Journal article › Research › peer-review

  125 Citations (Scopus)
• 1994

  Crop weed competition and herbicide performance in cereal species and varieties

  Christensen, S., Feb 1994, In: Weed Research. 34, 1, p. 29-36 8 p.

  Research output: Contribution to journal › Journal article › Research › peer-review

  77 Citations (Scopus)
• 1993

  Deriving Light Interception and Biomass from Spectral Reflectance Ratio

  Christensen, S. & Goudriaan, J., 1993, In: Remote Sensing of Environment. 43, 1, p. 87-95 9 p.

  Research output: Contribution to journal › Journal article › Research › peer-review

  69 Citations (Scopus)