Svend Christensen

Search results

• 2024

  HyperLeaf2024 - A Hyperspectral Imaging Dataset for Classification and Regression of Wheat Leaves

  Laprade, W. M., Pieta, P., Kutuzova, S., Westergaard, J. C., Nielsen, M., Christensen, S. & Dahl, A. B., 2024, Proceedings - 2024 IEEE/CVF Conference on Computer Vision and Pattern Recognition Workshops, CVPRW 2024. IEEE Computer Society Press, p. 1234-1243 10 p. (IEEE Computer Society Conference on Computer Vision and Pattern Recognition Workshops).

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

  Open Access

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  11 Downloads (Pure)
• 2023

  Unravelling the Complexities of Genotype-Soil-Management Interaction for Precision Agriculture

  Christensen, S. & Jensen, S. M., 2023, In: Agronomy. 13, 11, 13 p., 2727.

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

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  16 Downloads (Pure)
• 2022

  Advances in site-specific weed management in agriculture - A review

  Gerhards, R., Andújar Sanchez, D., Hamouz, P., Peteinatos, G. G., Christensen, S. & Fernandez-Quintanilla, C., 2022, In: Weed Research. 62, 2, p. 123-133

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

  Open Access

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  122 Citations (Scopus)

  38 Downloads (Pure)
• 2021

  Articulating the effect of food systems innovation on the Sustainable Development Goals

  Herrero, M., Thornton, P. K., Mason-D'Croz, D., Palmer, J., Bodirsky, B. L., Pradhan, P., Barrett, C. B., Benton, T. G., Hall, A., Pikaar, I., Bogard, J. R., Bonnett, G. D., Bryan, B. A., Campbell, B. M., Christensen, S., Clark, M., Fanzo, J., Godde, C. M., Jarvis, A., Loboguerrero, A. M. & 17 others, Mathys, A., McIntyre, C. L., Naylor, R. L., Nelson, R., Obersteiner, M., Parodi, A., Popp, A., Ricketts, K., Smith, P., Valin, H., Vermeulen, S. J., Vervoort, J., van Wijk, M., van Zanten, H. HE., West, P. C., Wood, S. A. & Rockström, J., 2021, In: The Lancet Planetary Health. 5, 1, p. e50-e62 13 p.

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

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  182 Citations (Scopus)

  104 Downloads (Pure)

• Deconstructing agronomic resource use efficiencies to increase food production

  Porter, J. R., Thorburn, P. J., Brown, H. E., Teixeira, E. I., Moot, D. J., Mills, A. & Christensen, S., 2021, In: Italian Journal of Agronomy. 16, 3, 6 p., 1694.

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

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  3 Citations (Scopus)

  17 Downloads (Pure)

• Extension of Plant Phenotypes by the Foliar Microbiome

  Hawkes, C. V., Kjøller, R., Raaijmakers, J. M., Riber, L., Christensen, S., Rasmussen, S., Christensen, J. H., Dahl, A. B., Westergaard, J. C., Nielsen, M., Brown-Guedira, G. & Hestbjerg Hansen, L., 2021, In: Annual Review of Plant Biology. 72, p. 823-846 24 p.

  Research output: Contribution to journal › Journal article › Research › peer-review
  34 Citations (Scopus)

• Identification of a bio-signature for barley resistance against Pyrenophora teres infection based on physiological, molecular and sensor-based phenotyping

  Pandey, C., Großkinsky, D. K., Westergaard, J. C., Jørgensen, H. J. L., Svensgaard, J., Christensen, S., Schulz, A. & Roitsch, T., 2021, In: Plant Science. 313, 11 p., 111072.

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

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  10 Citations (Scopus)

  54 Downloads (Pure)

• Site‐specific weed management—constraints and opportunities for the weed research community: Insights from a workshop

  Lati, R. N., Rasmussen, J., Andujar, D., Dorado, J., Berge, T. W., Wellhausen, C., Pflanz, M., Nordmeyer, H., Schirrmann, M., Eizenberg, H., Neve, P., Jørgensen, R. N. & Christensen, S., 2021, In: Weed Research. 61, 3, p. 147-153

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

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  32 Citations (Scopus)

  29 Downloads (Pure)

• The challenge of reproducing remote sensing data from satellites and unmanned aerial vehicles (UAVs) in the context of management zones and precision agriculture

  Rasmussen, J., Azim, S., Boldsen, S. K., Nitschke, T., Jensen, S. M., Nielsen, J. & Christensen, S., 2021, In: Precision Agriculture. 22, p. 834-851 18 p.

  Research output: Contribution to journal › Journal article › Research › peer-review
  29 Citations (Scopus)

• The importance of spectral correction of UAV-based phenotyping with RGB cameras

  Svensgaard, J., Jensen, S. M., Christensen, S. & Rasmussen, J., 2021, In: Field Crops Research. 269, 108177.

  Research output: Contribution to journal › Journal article › Research › peer-review
  21 Citations (Scopus)
• 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., 2020, In: Precision Agriculture. 21, p. 713-728

  Research output: Contribution to journal › Journal article › Research › peer-review
  17 Citations (Scopus)

• Innovation can accelerate the transition towards a sustainable food system

  Herrero, M., Thornton, P. K., Mason-D'Croz, D., Palmer, J., Benton, T. G., Bodirsky, B. L., Bogard, J. R., Hall, A., Lee, B., Nyborg, K., Pradhan, P., Bonnett, G. D., Bryan, B. A., Campbell, B. M., Christensen, S., Clark, M., Cook, M. T., de Boer, I. J. M., Downs, C., Dizyee, K. & 28 others, Folberth, C., Godde, C. M., Gerber, J. S., Grundy, M., Havlik, P., Jarvis, A., King, R., Loboguerrero, A. M., Lopes, M. A., McIntyre, C. L., Naylor, R., Navarro, J., Obersteiner, M., Parodi, A., Peoples, M. B., Pikaar, I., Popp, A., Rockstrom, J., Robertson, M. J., Smith, P., Stehfest, E., Swain, S. M., Valin, H., van Wijk, M., van Zanten, H. H. E., Vermeulen, S., Vervoort, J. & West, P. C., 2020, In: Nature Food. 1, p. 266-272 7 p.

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

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  364 Citations (Scopus)

  29 Downloads (Pure)

• The Effects of Cultivar, Nitrogen Supply and Soil Type on Radiation Use Efficiency and Harvest Index in Spring Wheat

  Wang, X., Christensen, S., Svensgaard, J., Jensen, S. M. & Liu, F., 2020, In: Agronomy. 10, 9, 12 p., 1391.

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

  Open Access

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  8 Citations (Scopus)

  22 Downloads (Pure)
• 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
  21 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., 2019, In: Precision Agriculture. 20, p. 1199-1210

  Research output: Contribution to journal › Journal article › Research › peer-review
  10 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 others, Harsch, 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 › Research › peer-review

  Open Access

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  100 Citations (Scopus)

  382 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., 2016, In: European Journal of Agronomy. 74, p. 75-92 18 p.

  Research output: Contribution to journal › Journal article › Research › peer-review
  221 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

• 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., 2016, In: Journal of Applied Ecology. 26, 5, p. 1352-1369 18 p.

  Research output: Contribution to journal › Journal article › Research › peer-review
  81 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 others, Renton, 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

  Open Access

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  31 Citations (Scopus)

  190 Downloads (Pure)
• 2015

  Image-based thresholds for weeds in maize fields

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

  Research output: Contribution to journal › Journal article › Research › peer-review
  18 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., 2015, In: New Phytologist. 207, p. 950-952 3 p.

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

  File
  35 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., 2015, In: Journal of Experimental Botany. 66, 18, p. 5429-5440 12 p.

  Research output: Contribution to journal › Journal article › Research › peer-review
  200 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
  55 Citations (Scopus)

• 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., 2014, In: Computers in Biology and Medicine. 53, p. 94-104 11 p.

  Research output: Contribution to journal › Journal article › Research › peer-review
  11 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

  File

• 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 others, Papadopoulos, 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
  14 Citations (Scopus)
• 2013

  Deconstructing crop processes and models via identities

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

  Research output: Contribution to journal › Journal article › Research › peer-review
  18 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., 2013, In: Weed Research. 53, 4, p. 242-248 7 p.

  Research output: Contribution to journal › Journal article › Research › peer-review
  131 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 others, Svensgaard, 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

  File

• 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

  File
• 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., 2012, In: Computers and Electronics in Agriculture. 82, p. 44-54 11 p.

  Research output: Contribution to journal › Journal article › Research › peer-review
  125 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., 2011, In: Computers and Electronics in Agriculture. 75, 2, p. 238-242 5 p.

  Research output: Contribution to journal › Journal article › Research › peer-review
  17 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
  3 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
  189 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
  92 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
  65 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
  41 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
  184 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
  62 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
  339 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
  63 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
  143 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
  79 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
  82 Citations (Scopus)