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Spatial Distribution Patterns of Johnsongrass (Sorghum halepense) in Corn Fields in Spain

  • Dionisio Andújar (a1), David Ruiz (a1), Ángela Ribeiro (a2), César Fernández-Quintanilla (a1) and José Dorado (a1)...


This study describes the distribution patterns of Johnsongrass populations present in 38 commercial corn fields located in three major corn growing regions of Spain. A total of 232 ha were visually assessed from the cabin of a combine during harvesting using a three-category ranking (high density, low density, no presence) and recording the georeferenced data in a tablet personal computer. On average, 10.3 and 3.9% of the surveyed area were infested with high and low density of Johnsongrass, respectively. Most of the infested area was concentrated in a few large patches with irregular shape. Small patches (less than 1,000 m2) represented only 27% of the infested area. Management factors could explain much of the spatial distribution of this weed in the studied fields. Tillage direction was the main factor explaining patch shape: the length width−1 ratio of the patches was greater than two in the tillage direction. In sprinkler irrigated fields, higher levels of infestation were generally observed close to the sprinkler lines. Areas close to the edges of the field had a higher risk of infestation than the areas in the middle of the fields: a negative relationship between distance from the edge and weed abundance was established. Because a few patches, located in some predictable parts of the field, such as field edges, represent most of the seriously infested area, site-specific treatments of these areas could reduce herbicide inputs, until more reliable, spatially precise and practical detection, mapping, and spraying systems are developed.


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Backes, M., Schumacher, D., and Plümer, L. 2005. The sampling problem in weed control: are currently applied sampling strategies adequate for site-specific weed control? Pages 155161 in Stafford, J. V., ed. Precision Agriculture '05. Wageningen, The Netherlands Wageningen Academic Publishers.
Barroso, J., Fernández-Quintanilla, C., Maxwell, B. D., and Rew, L. J. 2004. Simulating the effects of weed spatial pattern and resolution of mapping and spraying on economics of site-specific management. Weed Res. 44:460468.
Barroso, J., Ruiz, D., Fernández-Quintanilla, C., Leguizamon, E. S., Hernaiz, P., Ribeiro, A., Diaz, B., Maxwell, B. D., and Rew, L. J. 2005. Comparison of sampling methodologies for site-specific management of Avena sterilis . Weed Res. 45:165174.
Berge, T. W., Fykse, H., and Aastveit, A. H. 2007. Patch spraying of weeds in spring cereals: simulated influences of threshold level and spraying resolution on spraying errors and potential herbicide reduction. Acta Agric. Scand. Sect. B-Soil Plant Sci. 57:212221.
Blackshaw, R. E., O'Donovan, J. T., Harker, K. N., Clayton, G. W., and Stougaard, R. N. 2006. Reduced herbicide doses in field crops: a review. Weed Biol. Manag. 6:1017.
Brain, P. and Cousens, R. 1990. The effect of weed distribution on predictions of yield loss. J. Appl. Ecol. 27:735742.
Cardina, J., Johnson, G. A., and Sparrow, D. H. 1997. The nature and consequence of weed spatial distribution. Weed Sci. 45:364373.
Cardina, J., Sparrow, D. H., and McCoy, E. L. 1995. Analysis of spatial-distribution of common lambsquarters (Chenopodium album) in no-till soybean (Glycine max). Weed Sci. 43:258268.
Christensen, S., Søgaard, H. T., Kudsk, P., Nørremark, M., Lund, I., Nadimi, E. S., and Jørgensen, R. 2009. Site-specific weed control technologies. Weed Res. 49:233241.
Colliver, C. T., Maxwell, B. D., Tyler, D. A., Roberts, D. W., and Long, D. S. 1996. Georeferencing wild oat infestations in small grains: accuracy and efficiency of three weed survey techniques. Pages 453463 in Robert, P. C., Rust, R. H., and Larson, W. E., eds. Proceedings of the 3rd International Conference on Precision Agriculture. Madison, WI ASA/CSSA/SSSA.
Damalas, C. A. and Eleftherohorinos, I. G. 2001. Dicamba and atrazine antagonism on sulfonylurea herbicides used for Johnsongrass (Sorghum halepense) control in corn (Zea mays). Weed Technol. 15:6267.
Dewar, A. M. 2009. Weed control in glyphosate-tolerant maize in Europe. Pest Manag. Sci. 65:10471058.
European Council. 2009. Directive 2009/128/EC of the European Parliament and the Council establishing a framework for Community action to achieve the sustainable use of pesticides. Official Journal of the E. U. 309:7186.
Forcella, F. 1993. Value of managing within-field variability. Pages 125132 in Pierce, F. J. and Sadler, E. J., eds. Proceedings of Soil Specific Crop Management: A Workshop on Research and Development Issues. Madison, WI ASA/CSSA/SSSA.
Gerhards, R. and Christensen, S. 2003. Real-time weed detection, decision making and patch spraying in maize, sugarbeet, winter wheat and winter barley. Weed Res. 43:385392.
Ghersa, C. M., Martinez-Ghersa, M. A., Satorre, E. H., Vanesso, M. L., and Chichotky, G. 1993. Seed dispersal, distribution and recruitment of seedlings of Sorghum halepense (L.) Pers. Weed Res. 33:7988.
Ghersa, C. M. and Satorre, E. H. 1981. La dinámica de la población de rizomas de sorgo de alepo en relación con los sistemas de control más frecuentes. Revista Facultad de Agronomía. 3:133138. [In Spanish].
Holm, L. R. G., Plucknett, D. L., Pancho, J. V., and Herberger, J. P. 1977. The World's Worst Weeds: Distribution and Biology. Honolulu, HI The University Press of Hawaii. 609 p.
Humston, R., Mortensen, D. A., and Bjornstad, O. N. 2005. Anthropogenic forcing on the spatial dynamics of an agricultural weed: the case of the common sunflower. J. Appl. Ecol. 42:863872.
Johnson, G. A., Mortensen, D. A., and Gotway, C. A. 1996. Spatial and temporal analysis of weed seedling populations using geostatistics. Weed Sci. 44:704710.
Kelner, D. The effect of zero tillage on weed populations. 1995. Accessed: August 5, 2010.
Lamn, R. D., Slaughter, D. C., and Giles, D. K. 2002. Precision weed control system for cotton. Trans. ASAE. 45:231238.
Lee, W. S., Slaughter, D. C., and Giles, D. K. 1999. Robotic weed control systems for tomatoes. Precis. Agric. 1:95113.
Luschei, E. C., Van Wychen, L. R. M., Maxwell, B. D., Bussan, A. J., Buschena, D., and Goodman, D. 2001. Implementing and conducting on-farm weed research with the use of GPS. Weed Sci. 49:536542.
McWhorter, C. G. 1973. Johnsongrass. Its history and control. Weeds Today. 3:1213.
Mitskas, M. B., Eleftherohorinos, I. G., and Damalas, C. A. 2003. Interference between corn and Johnsongrass (Sorghum halepense) from seed or rhizome. Weed Sci. 51:540545.
Nosratti, I., Alizadeh, H. M., and Rasoolzadeh, S. 2007. Control of Johnsongrass (Sorghum halepense) with nicosulfuron in maize at different planting patterns. J. Agron. 6:444448.
Perry, N. H., Lutman, P. J. W., Miller, P. C. H., and Wheeler, H. C. 2001. A map-based system for patch spraying weeds: weed mapping. Pages 841846 in Proceedings of the British Crop Protection Council Conference—Weeds. Volume 2. Farnham, Surrey, UK The British Crop Protection Council.
Rew, L. J., Cussans, G. W., Mugglestone, M. A., and Miller, P. C. H. 1996. A technique for mapping the spatial distribution of Elymus repens, with estimates of the potential reduction in herbicide usage from patch spraying. Weed Res. 36:283292.
Rew, L. J., Miller, P. C. H., and Paice, M. E. R. 1997. The importance of patch mapping resolution for sprayer control. Aspects Appl. Biol.: Optimising Pesticide Applications. 48:4956.
Ruiz, D., Escribano, C., and Fernández-Quintanilla, C. 2006a. Identifying associations among sterile oat (Avena sterilis) infestation level, landscape characteristics and crop yields. Weed Sci. 54:11131121.
Ruiz, D., Escribano, C., and Fernández-Quintanilla, C. 2006b. Assessing the opportunity for site-specific management of Avena sterilis in winter barley fields in Spain. Weed Res. 46:379387.
[SPSS] Statistical Product and Service Solutions. 2008. SPSS 17.0 User's Guide. Chicago SPSS.
Van Wychen, L. R., Luschei, E. C., Bussan, A. J., and Maxwell, B. D. 2002. Accuracy and cost effectiveness of GPS-assisted wild oat mapping in spring cereal crops. Weed Sci. 50:120129.
Williams, M. M., Gerhards, R., Reichart, S., Mortensen, D. A., and Martin, A. R. 1999. Weed seedling population responses to a method of site-specific weed management. Pages 123132 in Robert, P. C., Rust, R. H., and Larson, W. E., eds. Proceedings of the 4th International Conference on Precision Agriculture. Madison, WI ASA/CSSA/SSSA.
Young, D. L., Kwon, T. J., Smith, E. G., and Young, F. L. 2003. Site-specific herbicide decision model to maximize profit in winter cereals. Prec. Agric. 4:227238.


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Spatial Distribution Patterns of Johnsongrass (Sorghum halepense) in Corn Fields in Spain

  • Dionisio Andújar (a1), David Ruiz (a1), Ángela Ribeiro (a2), César Fernández-Quintanilla (a1) and José Dorado (a1)...


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