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Influence of method of phosphorus application on smooth pigweed (Amaranthus hybridus) and common purslane (Portulaca oleracea) interference in lettuce

  • Bielinski M. Santos, Joan A. Dusky (a1), William M. Stall (a1), Thomas A. Bewick (a2) and Donn G. Shilling (a3)...

Abstract

Field trials were conducted to investigate the influence of P application method on the critical period of smooth pigweed and common purslane interference in lettuce. Studies were carried out in low-P histosols, where supplemental P fertilization is needed for lettuce production. Phosphorus was either broadcast or banded 5 cm beneath the lettuce rows at rates of 250 or 125 kg ha−1, respectively. Seedlings of either smooth pigweed or common purslane were transplanted at a density of 16 plants per 5.4 m2 (6-m row by 0.9 m wide). Weed interference duration was achieved by manual removal 2, 4, 6, or 8 wk after lettuce emergence and subsequently keeping the plot weed free until harvest. A weed-free control within each P regimen was also established. Marketable head number, head fresh yield, and head diameter were measured at harvest. Weed-free lettuce fresh yield was 20% higher with banded P than broadcast applications. In the weed–lettuce mixtures, the P regimen by weed removal interaction affected lettuce fresh yield and head diameter but not head number. Compared with broadcast P application, banded P extended the time needed to cause significant weed interference in lettuce by 10 d: from 24 to 34 d for smooth pigweed and from 37 to 47 d for common purslane.

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Corresponding author

Corresponding author. Gulf Coast Research and Education Center, University of Florida, 5007 60th Street East, Bradenton, FL 34203; bmsantos@yahoo.com

References

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Alkamper, J. 1976. Influence of weed infestation on effect of fertilizer dressings. Pflanzen.-Nachr. Bayer 29:191235.
Bottcher, D., Hanlon, E., and Izuno, F. 1992. Fertility best management practices for phosphorus control on organic soils: banding fertilizer. Florida Cooperative Extension Service Bull. AGR-53. Gainesville, FL: IFAS. 4 p.
DiTomaso, J. M. 1995. Approaches for improving crop competitiveness through the manipulation of fertilization strategies. Weed Sci 43:491497.
Dusky, J. A. and Stall, W. M. 1988. Evaluation of herbicides for weed control in Florida lettuce production. Proc. Fla. State Hortic. Soc 101:367370.
[FASS] Florida Agricultural Statistics Service. 1998. Florida Agricultural Statistics: Vegetables Summary 1997–1998. Tallahasee, FL: Florida Department of Agriculture and Consumer Services. 64 p.
Halford, C., Hamill, A. S., Zhang, J., and Doucet, C. 2001. Critical period of weed control in no-till soybean (Glycine max) and corn (Zea mays). Weed Technol 15:737744.
Hochmuth, G., Hanlon, E., Nagata, R., Snyder, G., and Schueneman, T. 1994. Crisphead lettuce: fertilization recommendations for crisphead lettuce grown on organic soils in Florida. Florida Cooperative Extension Service Bull. SP-153. Gainesville, FL: IFAS. 25 p.
Hochmuth, G., Rice, R., and Simonne, E. 2002. Phosphorus management for vegetable production in Florida. Florida Cooperative Extension Service Bull. HS-105. Gainesville, FL: IFAS. 4 p.
Izuno, F. T., Bottcher, A. B., Coale, F. J., Sanchez, C. A., and Jones, D. B. 1995. Agricultural BMPs for phosphorus reduction in south Florida. Trans. ASAE 38:735744.
Martin, S. G., van Acker, R. C., and Friesen, L. F. 2001. Critical period of weed control in spring canola. Weed Sci 49:326333.
Maynard, D. N., Hochmuth, G. J., Vavrina, C. S., Stall, W. M., Kucharek, T. A., and Webb, S. E. 2002. Lettuce, endive, escarole production in Florida. Pages 195202 in Olson, S. O. and Maynard, D. N. eds. Vegetable Production Guide for Florida, 2002–2003. Gainesville, FL: IFAS.
Radosevich, S. R. 1987. Methods to study interactions among crops and weeds. Weed Technol 1:190198.
Rasmussen, P. E. 1995. Effects of fertilizer and stubble burning on downy brome competition in winter wheat. Commun. Soil Sci. Plant Anal 26:951960.
Sample, E. C., Soper, R. J., and Racz, G. J. 1980. Reactions of phosphate fertilizers in soils. Pages 263304 in Khasawneh, F. E. ed. The Role of Phosphorus in Agriculture. Madison, WI: ASA, CSSA, SSSA.
Sanchez, C. A. 1990. Soil-testing and fertilization recommendations for crop production on organic soils in Florida. Florida Cooperative Extension Service Bull. Gainesville, FL: IFAS. 876.
Sanchez, C. A., Swanson, S., and Porter, P. S. 1990. Banding P to improve fertilizer use efficiency of lettuce. J. Am. Soc. Hortic. Sci 115:581584.
Santos, B. M., Dusky, J. A., Stall, W. M., and Shilling, D. G. 1997. Influence of smooth pigweed and common purslane densities on lettuce yields as affected by phosphorus fertility. Proc. Fla. State Hortic. Soc 110:315317.
Santos, B. M., Dusky, J. A., Stall, W. M., Shilling, D. G., and Bewick, T. A. 1998. Phosphorus effects on competitive interactions of smooth pigweed (Amaranthus hybridus) and common purslane (Portulaca oleracea) with lettuce (Lactuca sativa). Weed Sci 46:307312.
Santos, B. M., Dusky, J. A., Stall, W. M., Shilling, D. G., and Bewick, T. A. 2003. Influencia de la fertilización fosforada sobre la interferencia de Amaranthus hybridus y Portulaca oleracea en lechuga producida en suelos orgánicos. Manejo Integrado Plagas Agroecol 67:1317.
[SAS] Statistical Analysis System. 1990. SAS Procedures Guides. Version 6, 3rd ed. Cary, NC: Statistical Analysis Systems Institute. 567 p.
Shrefler, J. W., Dusky, J. A., Shilling, D. G., Brecke, B. J., and Sanchez, C. A. 1994. Effects of phosphorus fertility on competition between lettuce (Lactuca sativa) and spiny amaranth (Amaranthus spinosus). Weed Sci 42:556560.
Sindel, B. M. and Michael, P. W. 1992. Growth and competitiveness of Senesio madagascariensis Poir. (fireweed) in relation to fertilizer use and increases in soil fertility. Weed Res 32:399406.
Tilman, D. 1982. Resource Competition and Community Structure. Princeton, NJ: Princeton University Press. 578 p.
[USDA] United States Department of Agriculture. 1985. United States Standards for Grades of Lettuce. Washington, D.C.: Agricultural Marketing Service. 125 p.
Windemuller, P., Anderson, D. L., Aalderink, R. H., Abtew, W., and Obeysekera, J. 1997. Modeling flow in the Everglades Agricultural Area irrigation/drainage canal network. J. Am. Water Resour. Assoc 33:2134.
Zimdahl, R. L. 1980. Weed-crop competition: A review. Corvalis, OR: International Plant Protection Center, Oregon State University. 175 p.

Keywords

Influence of method of phosphorus application on smooth pigweed (Amaranthus hybridus) and common purslane (Portulaca oleracea) interference in lettuce

  • Bielinski M. Santos, Joan A. Dusky (a1), William M. Stall (a1), Thomas A. Bewick (a2) and Donn G. Shilling (a3)...

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