Abstract
The allelopathic potential of different cultivars ofHelianthus annuus against nitrification was studied using the soil incubation method. The results indicated that aqueous extracts and residues of roots and shoots of all test cultivars significantly reduced the nitrification rate in soil. However, cultivars Local and Citosol were found to be more inhibitory to nitrification than others.
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References
Alexander, M. 1977. Soil Microbiology. John Wiley & Sons, New York.
Alsaadawi, I.S., Al-Uqaili, J.K., Al-Rubeaa, A.J., andAl-Hadithy, S.M. 1985. Effect of irradiation on allelopathic potential ofSorghum bicolor against weeds and nitrification.J. Chem. Ecology. 12:1737–1745.
Alsaadawi, I.S., Al-Uqaili, J.K., Al-Rubeaa, A.J., andAl-Hadithy, S.M. 1986. Allelopathic suppression of weeds and nitrification by selected cultivars ofSorghum bicolor (L.) Moench.J. Chem. Ecol. 12:209–219.
Barnes, J.P., andPutnam, A.R. 1983. Rye residues contribute weed suppression in no-tillage cropping systems.J. Chem. Ecol. 9:1045–1058.
Bremner, J.M. 1965. Total nitrogen, pp. 1149–1178,in C.A. Black (ed.). Methods of Soil Analysis Part 2. American Society of Agronomy, Madison, Wisconsin.
Fay, P.K., andDuke, W.B. 1977. An assessment of allelopathic potential inAvena germ plasm.Weed Sci. 25:224–228.
Greenland, D.J. 1958. Nitrate fluctuations in tropical soils.J. Agric. Sci. 50:82–92.
Hall, A.B., Blum, U., andFites, R.C. 1982. Stress modification of allelopathy ofHelianthus annuus L. debris on seed germination.Am. J. Bot. 69:776–783.
Huber, D.W., Warren, H.L., Nelson, D.W., andTasi, C.Y. 1977. Nitrification inhibitors-New tools for food production.Bioscience 27:523–529.
Leather, G.R. 1982. Sunflowers (Helianthus annuus) are allelopathic to weeds.Weed Sci. 31:37–42.
Leather, G.R. 1983. Weed control using allelopathic crop plants.J. Chem. Ecol. 9:983–989.
Lodhi, M.A.K. 1981. Accelerated soil mineralization, nitrification and revegetation of abandoned fields due to the removal of crop-soil phytotoxicity.J. Chem. Ecol. 7:685–694.
Moore, D.R.E., andWaid, J.S. 1971. The influence of washing of living roots on nitrification.Soil Biol. Biochem. 3:69–83.
Neal, J.L., Jr. 1969. Inhibition of nitrifying bacteria by grass and forb root extracts.Can. J. Bot. 15:633–635.
Rice, E.L. 1984. Allelopathy, 2nd ed. Academic Press, London.
Rice, E.L., andPancholy, S.K. 1972. Inhibition of nitrification by climax ecosystems.Am. J. Bot. 59:1033–1040.
Rice, E.L., andPancholy, S.K. 1973. Inhibition of nitrification by climax ecosystems. II. Additional evidence of possible role of tannins.Am. J. Bot. 60:691–702.
Rice, E.L., andPancholy, S.K. 1974. Inhibition of nitrification by climax ecosystem. III. Inhibitors other than tannins.Am. J. Bot. 61:1095–1103.
Sahrawat, K.L., andParmar, B.S. 1975. Alcohol extract of neem (Azadirachtaindica L.) seed as nitrification inhibitor.J. Indian Soc. Soil Sci. 23:131–134.
Santhi, S.R., Palaniappan, S.P., andPurushothaman, D. 1986. Influence of neem leaf on nitrification in a lowland rice soil.Plant Soil 93:133–135.
Wilson, R.E., andRice, E.L. 1968. Allelopathy as expressed byHelianthus annuus and its role in old-field succession.Bull. Torrey Bot. Club 95:432–448.
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AlSaadawi, I.S. Biological suppression of nitrification by selected cultivars ofHelianthus annum L.. J Chem Ecol 14, 733–741 (1988). https://doi.org/10.1007/BF01018768
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DOI: https://doi.org/10.1007/BF01018768