Keywords
How to Cite
Abstract
Phosphorus (P) is one of the 17 elements essential for plant growth and development, and is also a key component in some agrochemicals, such as phosphorous acid. Thus, there are two types of P closely associated with crop production. The similarity of terms such as phosphoric acid and phosphorous acid may create some confusion as to the actual content and efficacy of these products. This revised 7-page fact sheet explains what phosphorous acid is and examines both its fungicidal activity and nutrient value. Written by Asha M. Brunings, Guodong Liu, Eric H. Simonne, Shouan Zhang, Yuncong Li, and Lawrence E. Datnoff, and published by the UF Department of Horticultural Sciences, March 2012.
References
Association of American Plant Food Control Officials. 2005. "Model for Fertilizer Regulation in North America." Accessed October 19, 2011. http://www.aapfco.org/aapfcorules.html.
Bai, C., C. C. Reilly, and B. W. Wood. 2006. "Nickel Deficiency Disrupts Metabolism of Ureides, Amino Acids, and Organic Acids of Young Pecan Foliage." Plant Physiology 140 (2): 433-443. https://doi.org/10.1104/pp.105.072983
Bashan, B., Y. Levy, and Y. Cohen. 1990. "Variation in Sensitivity of Phytophthora infestans to Fosetyl-Al." Plant Pathology 39 (2): 134-140. https://doi.org/10.1111/j.1365-3059.1990.tb02484.x
Bayer Cropscience. 2004. "Aliette®Product Information." Accessed March 12, 2011. http://www.bayercropscience.us/products/fungicides/aliette/.
Biagro Western Sales, Inc. 2003. "Nutri-Phite® Fertilizer." Accessed March 12, 2011. http://www.biagro.com/nutri_phite/np_html/np_content_intro.html.
Brown, S., S. T. Koike, O. E. Ochoa, F. Laemmlen, and R. W. Michelmore. 2004. "Insensitivity to the Fungicide Fosetyl-Aluminum in California Isolates of the Lettuce Downy Mildew Pathogen, Bremia lactucae." Plant Disease 88 (5): 502-508. https://doi.org/10.1094/PDIS.2004.88.5.502
Coffey, M. D., and L. A. Bower. 1984. "In vitro Variability among Isolates of Eight Phytophtora Species in Response to Phosphorous Acid." Phytopathology 74 (6): 738-742. https://doi.org/10.1094/Phyto-74-738
Cohen, Y., and M. D. Coffey. 1986. "Systemic Fungicides and the Control of Oomycetes." Annual Review of Phytopathology 24: 311-338. http://www.annualreviews.org/doi/abs/10.1146/annurev.py.24.090186.001523. https://doi.org/10.1146/annurev.py.24.090186.001523
Cooke, L. R., and G. Little. 2002. "The Effect of Foliar Application of Phosphonate Formulations on the Susceptibility of Potato Tubers to Late Blight." Pest Management Science 58 (1): 17-25. doi: 10.1002/ps.408 http://onlinelibrary.wiley.com/doi/10.1002/ps.408/full. https://doi.org/10.1002/ps.408
Datnoff, L., J. Cisar, B. Rutherford, K. Williams, and D. Park. 2003. "Effect of Riverdale Magellan and Chipco Signature on Pythium Blight Development on Lolium perenne, 2001-2002." F&N Tests 58 (T041): 1-2. http://www.plantmanagementnetwork.org/pub/trial/fntests/reports/2003/T041.pdf.
Datnoff, L., J. Cisar, B. Rutherford, K. Williams, and D. Park. 2005. "Effect of Fungicides and Other Prophylactic Treatments on Pythium Blight Development on Poa trivialis, 2004." F&N Tests 60 (T033): 1. http://www.plantmanagementnetwork.org/pub/trial/fntests/reports/2005/T033.pdf.
Dolan, T. E., and M. D. Coffey. 1988. "Correlative In vitro and In vivo Behavior of Mutant Strains of Phytophthora palmivora Expressing Different Resistances to Phosphorous Acid and Fosetyl-Na." Phytopathology 78 (7): 974-978. https://doi.org/10.1094/Phyto-78-974
Environmental Protection Agency (EPA). 1991. "R.E.D. Facts: Fosetyl-Al (Aliette)." Accessed October 19, 2011. http://upload.wikimedia.org/wikisource/en/f/fa/Fosetylal_red-facts_1994.pdf.
Fenn, M. E., and M. D. Coffey. 1984. "Studies on the In vitro and In vivo Antifungal Activity of Fosetyl-Al and Phosphorous Acid." Phytopathology 74 (5): 606-611. https://doi.org/10.1094/Phyto-74-606
Fenn, M. E., and M. D. Coffey. 1985. "Further Evidence for the Direct Mode of Action of Fosetyl-Al and Phosphorous Acid." Phytopathology 75 (9): 1064-1068. https://doi.org/10.1094/Phyto-75-1064
Fenn, M. E., and M. D. Coffey. 1989. "Quantification of Phosphonate and Ethyl Phosphonate in Tobacco and Tomato Tissues and Significance for the Mode of Action of Two Phosphonate Fungicides." Phytopathology 79 (1): 76-82. https://doi.org/10.1094/Phyto-79-76
Förster, H., J. E. Adaskaveg, D. H. Kim, and M. E. Stang-hellini. 1998. "Effect of Phosphite on Tomato and Pepper Plants and on Susceptibility of Pepper to Phytophthora Root and Crown Rot in Hydroponic Culture." Plant Disease 82 (10): 1165-1170. https://doi.org/10.1094/PDIS.1998.82.10.1165
Fry, W. E., and N. J. Grünwald. 2010. "Introduction to Oomycetes." The Plant Health Instructor. doi:10.1094/PHI-I-2010-1207-01. http://www.apsnet.org/edcenter/intropp/PathogenGroups/Pages/IntroOomycetes.aspx.
Garbelotto, M., T. Y. Harnik, and D. J. Schmidt. 2009. "Efficacy of Phosphonic Acid, Metalaxyl-M and Copper Hydroxide Against Phytophthora ramorum In vitro and In planta." Plant Pathology 58 (1): 111-119. https://doi.org/10.1111/j.1365-3059.2008.01894.x
Garbelotto, M., and D. Schmidt. 2009. "Phosphonate Controls Sudden Oak Death Pathogen for up to 2 Years." California Agriculture 63 (1): 10-17. https://doi.org/10.3733/ca.v063n01p10
Griffith, J. M., M. D. Coffey, and B. R. Grant. 1993. "Phosphonate Inhibition as a Function of Phosphate Concentration in Isolates of Phytophthora palmivora." Journal of General Microbiology 139 (9): 2109-2116. https://doi.org/10.1099/00221287-139-9-2109
Heffer, V., M. L. Powelson, and K. B. Johnson. 2002. "Oomycetes." The Plant Health Instructor. doi:10.1094/PHI-I-2002-0225-01. http://www.apsnet.org/edcenter/intropp/LabExercises/Pages/Oomycetes.aspx. https://doi.org/10.1094/PHI-I-2002-0225-01
Helena Chemical Company. 2002. Helena ProPhyt: A Systemic Fungicide Containing Potassium and Phosphate (promotional brochure). Memphis, TN: Author.
Huang, J., Z. Su, and Y. Xu. 2005. "The Evolution of Microbial Phosphonate Degradative Pathways." Journal of Molecular Evolution 61 (5): 682-690. https://doi.org/10.1007/s00239-004-0349-4
Johnson, D. A., D. A. Inglis, and J. S. Miller. 2004. "Control of Potato Tuber Rots Caused by Oomycetes with Foliar Applications of Phosphorous Acid." Plant Disease 88 (10): 1153-1159. https://doi.org/10.1094/PDIS.2004.88.10.1153
McDonald, A. E., B. R. Grant, and W. C. Plaxton. 2001. "Phosphite (Phosphorous Acid): Its Relevance in the Environment and Agriculture and Influence on Plant Phosphate Starvation Response." Journal of Plant Nutrition 24 (10): 1505-1519. https://doi.org/10.1081/PLN-100106017
McGrath, M. T. 2004. "What are Fungicides?" The Plant Health Instructor. doi: 10.1094/PHI-I-2004-0825-01. http://www.apsnet.org/edcenter/intropp/topics/Pages/Fungicides.aspx. https://doi.org/10.1094/PHI-I-2004-0825-01
Nelson, M. E., K. C. Eastwell, G. G. Grove, J. D. Barbour, C. M. Ocamb, and J. R. Aldredge. 2004. "Sensitivity of Pseudoperonospora humuli (the Causal Agent of Hop Downy Mildew) from Washington, Idaho, and Oregon to Fosetyl-Al (Aliette)." Plant Health Progress. doi: 10.1094/PHP-2004-0811-01-RS. http://www.plantmanagementnetwork.org/sub/php/research/2004/aliette/. https://doi.org/10.1094/PHP-2004-0811-01-RS
Nufarm USA. "Phostrol®." Nufarm Ltd. Accessed March 12, 2011. http://www.nufarm.com/USAg/Phostrolr.
Ouimette, D .G., and M. D. Coffey. 1989a. "Comparative Antifungal Activity of Four Phosphonate Compounds against Isolates of Nine Phytophthora Species." Phytopathology 79 (7): 761-767. https://doi.org/10.1094/Phyto-79-761
Ouimette, D. G., and M. D. Coffey. 1989b. "Phosphonate Levels in Avocado (Persea americana) Seedlings and Soil Following Treatment with Fosethyl-Al or Potassium Phosphonate." Plant Disease 73 (3): 212-215. https://doi.org/10.1094/PD-73-0212
Parke, J. L., and S. Lucas. 2008. "Sudden Oak Death and Ramorum Blight." The Plant Health Instructor. doi: 10.1094/PHI-I-2008-0227-01. http://www.apsnet.org/edcenter/intropp/lessons/fungi/Oomycetes/Pages/SuddenOakDeath.aspx.
Pesticide Action Network. 2004. "PAN Pesticide Database." Accessed March 12, 2011. http://pesticideinfo.org/.
Raid, R. N., E. McAvoy, and D. D. Sui. 2010. "Evaluation of Fungicides for Management of Downy Mildew on Sweet Basil." Phytopathology 100 (6, Supplement): S107.
Raid, R. N. 2008. "Evaluation of Prophyt, Alone and in Combination, for Post-Infection Control of Downy Mildew on Basil, Fall 2007." Plant Disease Management Reports 2: V070. doi: 10. 1094/PDMR02. http://www.plantmanagementnetwork.org/pub/trial/pdmr/reports/2008/V070.pdf.
Rebollar-Alviter, A., L. V. Madden, and M. A. Ellis. 2005. "Efficacy of Azoxystrobin, Pyraclostrobin, Potassium Phosphite, and Mefenoxam for Control of Strawberry Leather Rot Caused by Phytophthora cactorum." Plant Health Progress. doi: 10.1094/PHP-2005-0107-01-RS. http://www.plantmanagementnetwork.org/pub/php/research/2005/leather/. https://doi.org/10.1094/PHP-2005-0107-01-RS
Roberts, P. D., R. N. Raid, P. F. Harmon, S. A. Jordan, and A. J. Palmateer. 2009. "First Report of Downy Mildew Caused by a Peronospora sp. on Basil in Florida and the United States." Plant Disease 93 (2): 199. https://doi.org/10.1094/PDIS-93-2-0199B
Smillie, R., B. R. Grant, and D. Guest. 1989. "The Mode of Action of Phosphite: Evidence for Both Direct and Indirect Action Modes of Action on Three Phytophthora spp. in Plants." Phytopathology 79 (9): 921-926. https://doi.org/10.1094/Phyto-79-921
Street, J. J., and G. Kidder. 1989. Soils and Plant Nutrition. Fact Sheet SL-8. Gainesville: University of Florida Institute of Food and Agricultural Sciences.
Waggoner, B. M., and B. R. Speer. 1995. "Introduction to the Oomycota." Regents of University of California. University of California at Berkeley. Accessed March 12, 2011. http://www.ucmp.berkeley.edu/chromista/oomycota.html.