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Interrelationships of plant health and the sustainability of agriculture, with special reference to plant diseases

Published online by Cambridge University Press:  30 October 2009

R. James Cook
R. James Cook
Affiliation:
Plant pathologist with the Root Disease and Biological Control Research Unit, Agricultural Research Service, U.S. Department of Agriculture, Washington State University, Pullman, WA 99164.
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Abstract

U.S. crops have the potential routinely to produce 15–25% more, and in some cases 100% more, with no more water or fertilizer, but are prevented from doing so by diseases, nematodes, arthropod pests, and weeds. It is not compatible with the goals of a sustainable agriculture to fertilize, cultivate, and water for maximum production, but then allow diseases and pests to limit actual yields to some fraction of what was paid for with the capital investments and agronomic inputs. In eastern Washington and adjacent northern Idaho (The Palouse), wheat generally yields 4,800–6,200 kg/ha in years of normal precipitation (45–55 cm), but yields 6,900–9,000 kg/ha with the same water and fertilizer if the soil is fumigated to eliminate root disease organisms and weeds, and the plants are protected from rusts, pseudocercosporella foot rot, and aphids. Some practical alternatives to soil fumigation (depending on the value of the crop) include crop rotation, tillage, flooding the soil, heating the soil (using clear plastic tarp or by burning residue on the soil surface), and organic amendments that intensify the biological stresses on pathogen propagules in soil. Other disease controls include using pathogen-free planting material, maintaining a diversity of genetic resistance, and adjusting planting date and method of seeding to escape pathogens. Some of the emerging technologies include improved serological and molecular methods for diagnosing pathogens, microorganisms that kill pathogen propagules in soil or protect the plant, simulation models of epidemics to forecast disease outbreaks, and integrated pest management systems. Better experimental a pproaches are needed to identify and determine the priorities of the combinations of biotic and abiotic factors that limit yields, and more attention should be given to holistic plant health care.

Type
Articles
Information
American Journal of Alternative Agriculture , Volume 1 , Issue 1 , Winter 1986 , pp. 19 - 24
Copyright
Copyright © Cambridge University Press 1986

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References

1.Ashworth, L. J. Jr., Morgan, D. P., Gaona, S. A., and McCain, A. H.. 1982. Polyethylene tarping controls Verticillium wilt in pistachios. California Agriculture 36(5–6):17–18.Google Scholar
2.Baker, K. F. 1962. Principles of heat treatment of soil and planting material. Journal Australian Institute Agricultural Science 28:118–126.Google Scholar
3.Baker, K. F. and Cook, R. J.. 1974. (original ed.). Biological Control of Plant Pathogens. W. H. Freeman, San Francisco. Reprinted ed., 1982. American Phytopathological Society, St. Paul, MN. 433 pp.Google Scholar
4.Baker, K. F. and Linderman, R. G.. 1979. Unique features of the pathology of ornamental plants. Annual Review Phytopathology 17:253–277.CrossRefGoogle Scholar
5.Boyer, J. S. 1982. Plant productivity and the environment. Science 218:443–448.CrossRefGoogle Scholar
6.Browning, J. Artie. 1983. Goal for plant health in the age of plants: A national plant health system. In: Challenging Problems in Plant Health, Kommedahl, T. and Williams, Paul H. (eds.), pp. 45–57. American Phytopathological Society, St. Paul, MN. 538 pp.Google Scholar
7.Coakley, Stella Melugin, Line, Roland F., and Boyd, William S.. 1983. Regional models for predicting stripe rust on winter wheat in the Pacific Northwest. Phytopathology 73:1382–1385.CrossRefGoogle Scholar
8.Cook, R. J. 1980. Fusarium foot rot of wheat and its control in the Pacific Northwest. Plant Disease 64:1061–1065.CrossRefGoogle Scholar
9.Cook, R. J. 1984a. Root health: Importance and relationship to farming practices. In: Organic Farming: Current Technology and its Role in a Sustainable Agriculture, Bezdicek, D. F., Power, J. F., Keeney, D. R., and Wright, M. J. (eds.), pp. 11–127. American Society Agronomy Special Publication No. 46. 192 pp.Google Scholar
10.Cook, R. J. 1984b. Biological control of root pathogens: New technologies and the potential for impact on crop productivity. In: Soilborne Crop Diseases in Asia, pp. 206–241. Food and Fertilizer Technology Center for the Asian and Pacific Region. FFTC Book Series No. 26. 240 pp.Google Scholar
11.Cook, R. J. 1985a. Pathogens as constraints to crop productivity. In: Water and Water Quality in World Food Supplies, Jourdan, W. R. (ed.). Symposium, 05 26–30, 1985. Texas A&M University. (In press).Google Scholar
12.Cook, R. J. 1985b. Use of the term “crop loss.” Plant Disease 69:95.Google Scholar
13.Cook, R. J. 1985c. Plant health and the sustainability of agriculture, with special reference to disease control by beneficial microorganisms. Biol. Agric. Horticulture, A. B. Academic Publ., Berkhamsted, Herts, England. (In press).Google Scholar
14.Cook, R. J. 1985d. Biological control of plant pathogens: Theory to application. Phytopathology 75:25–29.CrossRefGoogle Scholar
15.Cook, R. J. and Baker, K. F.. 1983. The Nature and Practice of Biological Control of Plant Pathogens. American Phytopathological Society, St. Paul, MN. 539 pp.Google Scholar
16.Cook, R. J. and Rovira, A. D.. 1976. The role of bacteria in the biological control of Gaeumannomyces graminis by suppressive soils. Soil Biol. and Biochem. 8:267–273.CrossRefGoogle Scholar
17.Cook, R. J., Boosalis, M. G., and Doupnik, B.. 1978. Influence of crop residues on plant diseases. In: Crop Residue Management Systems, Oschwald, W. R. (ed.), pp. 147–164. American Agronomy Society Special Publication No. 31. 248 pp.Google Scholar
18.Cook, R. J. and Haglund, W. A.. 1982. Pythium root rot: A barrier to yield of Pacific Northwest wheat. Washington State University College of Agriculture Research Bulletin No. XB0913. 20 pp.Google Scholar
19.Doupnik, B. and Boosalis, M. G.. 1980. Ecofallow—a reduced tillage system—and plant diseases. Plant Disease 64:31–35.CrossRefGoogle Scholar
20.Halk, E. L. and DeBoer, S. H.. 1985. Monoclonal antibodies in plant disease research. Annual Review Phytopathology 23:321–350.CrossRefGoogle Scholar
21.Hollings, M. 1965. Disease control through virus-free stock. Annual Review Phytopathology 3:367–389.CrossRefGoogle Scholar
22.Hwang, S. C., Chen, C. L., and Lin, J. C.. 1984. Cultivation of banana using plantlets from meristem culture. HortScience 19:231–233.CrossRefGoogle Scholar
23.IITA. 1976. Annual Report. International Institute Tropical Agriculture (IITA) for 1975. Ibadan, Nigeria.Google Scholar
24.James, C. W. 1980. Economic, social and political implications of crop losses; a holistic framework for loss assessments in agriculture systems. In: Crop Loss Assessment, E. C. Stakman Commemorative Symposium, pp. 10–16. Miscellaneous Publication 7. Agricultural Experiment Station, University of Minnesota, St. Paul, MN. 327 pp.Google Scholar
25.Katan, J. 1980. Solar pasteurization of soils for disease control: Status and prospects. Plant Disease 64:450–454.CrossRefGoogle Scholar
26.Moore, K. J. and Cook, R. J. 1984. Direct-drilling increases take-all of wheat in the Pacific Northwest. Phytopathology 74:1044–1049.CrossRefGoogle Scholar
27.Papavizas, G. C. and Lumsden, R. D.. 1980. Biological control of soilborne fungal propagules. Annual Review Phytopathology 18:389–413.CrossRefGoogle Scholar
28.Raju, B. C. and Olson, C. J.. 1985. Indexing systems for producing clean stock for disease control in commercial floriculture. Plant Disease 69:189–192.Google Scholar
29.Reis, E. M., Cook, R. J., and McNeal, B. L.. 1982. Effect of mineral nutrition on take-all of wheat. Phytopathology 72:224–229.CrossRefGoogle Scholar
30.Schneider, R. W. (ed.). 1982. Suppressive Soils and Plant Disease. American Phytopathological Society, St. Paul, MN. 96 pp.Google Scholar
31.Schroth, M. N. and Hancock, J. G.. 1982. Diseasesuppressive soil and root-colonizing bacteria. Science 216:1376–1381.CrossRefGoogle ScholarPubMed
32.Slack, S. A. 1980. Pathogen-free plants by meristem culture. Plant Disease 64:15–17.Google Scholar
33.Stover, R. H. 1979. Flooding of soil for disease control. In: Soil Disinfectation, Mulder, D. (ed.), pp. 19–28. Elsevier Sci. Publ. Amsterdam. 368 pp.CrossRefGoogle Scholar
34.Teng, P. S. 1985. A comparison of simulation approaches to epidemic modeling. Annual Review Phytopathology 23:351–379.CrossRefGoogle Scholar
35.Van der Plank, J. R. 1968. Disease Resistance in Plants. Academic Press, New York and London. 206 pp.Google Scholar
36.Wilhelm, S. and Paulus, A. O.. 1980. How soil fumigation benefits the California strawberry industry. Plant Disease 64:264–270.Google Scholar
37.Wolfe, M. S. and Barrett, J. A.. 1980. Can we lead the pathogen astray? Plant Disease 64:148–155.CrossRefGoogle Scholar
38.Zaag, D. E. van der. 1984. Reliability and significance of a simple method of estimating the potential yield of the potato crop. Potato Research 27:51–73.CrossRefGoogle Scholar