ifoam'96 ifoam'96
Book of Abstracts
11th IFOAM Scientific Conference
11-15 August 1996, Copenhagen, Denmark
EcoWeb Denmark


Allelopathy for ecological control of cultivated plants diseases.W13/P3

Bourbos, Vaguelis A.; Skoudridakis, Michalis T.; Darakis, George A.; Stavroulakis George G..

1)National Agricultural Research Foundation, Subtropical Plants and Olive Trees Institute of Chania. Laboratory of Phytopathology, Agrokipio, 73100 Chania, Greece, 2) University of Crete, Laboratory of Science, Teaching of Primary Education 74100 Rethymnon, Greece, 3)Mediterranean Agronomic Institute of Chania, P.O.Box 85, 73100 Chania, Greece

The profound study of allelopathy among the plant organisms can help in the research of allelochemical compounds which can control diseases, pests and weeds on the cultivated plants. These compounds themselves and in low concentrations or in form of plant extracts, are possible to substitute the synthetic pesticides with all their known side effects on the agroecosystems. These are natural ingredients for which mechanism for their degradation exists in nature. Particular interest shows the allelochemicals that derive from microorganisms that their mass production is possible.
The principal aims of allelopathy for plant disease control of cultivated plants concern the use of allelochemicals produced by plant organisms for the inhibition of the different phytopathogens and the development of procedure techniques, as well as the use of allelochemicals as natural pesticides.
Ecological phytopathology is mainly interested in the following cases:a.The mixed cropping with plants bearing allelochemicals or with the incorporation of their plant parts into the soil.b.The use of essential oils or plant extracts as natural pesticides.c.The development of practical techniques for the exploitation of allelochemicals produced by various microorganisms, of biostimulators inducing the development of dormant propagules without pathogenicity on many pathogenic microorganisms and of the mycostasis phenomenon.d.The guided change on the rizosphere biocommunity of the cultivated plants by microorganisms neutralising the inhibitory activity of rhizosphaerins on the antagonistic microflora.e. The use of mycorrhizae that produce or stimulate the production of allelochemicals by the host plant.

Waller, G.R. (1987): Allelochemicals: Role in Agriculture and Forestry. Ed. American Chemical Society, Symposium Series 330, Washington DC, 606 pp.

Bourbos, V.A. and M.T. Skoudridakis (1987): Das Verhalten einiger pilzlicher Antagonisten in der Rhizosphaere resistenter und anfaelliger Gewaechshaustomaten. Journal of Phytopathology, Vol. 120, p. 193-198.

Dubey, N.K. and Kishore, N. (1990): A review on prospectives of higher plant products as botanical pesticides in plant protection. Mededelingen van de Faculteit Landbouwwetenschappen, Rijksuniversiteit Gent, Vol. 55 (3a), p. 971 - 974.