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Simulation of the Seed Bank Dynamics of Orobanche crenata Forsk. in some Crop Rotations Common in Northern Syria

Published online by Cambridge University Press:  03 October 2008

H. Schnell ,
M. Kunisch ,
M. C. Saxena  and
J. Sauerborn
H. Schnell*
Affiliation:
Institute for Plant Production in the Tropics and Subtropics, University of Hohenheim-380, 70593 Stuttgart, Germany
M. Kunisch
Affiliation:
Institute for Plant Production in the Tropics and Subtropics, University of Hohenheim-380, 70593 Stuttgart, Germany
M. C. Saxena
Affiliation:
International Center for Agricultural Research in the Dry Areas (ICARDA), PO Box 5466 Aleppo, Syria
J. Sauerborn
Affiliation:
Institute for Plant Production in the Tropics and Subtropics, University of Hohenheim-380, 70593 Stuttgart, Germany
*
‡ Koenigheimer Str. 34, 97941 Tauberbischofsheim, Germany.
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Summary

Simulations of the dynamics of the seed bank of Orobanche crenata Forsk. under different crop rotations are presented. Rotations studied involved four host species, lentil (Lens culinaris Medik.), chickpea (Cicer arietinum L.), faba bean (Vicia faba L.) and woolly-pod vetch (Vicia villosa subsp. dasycarpa (Ten.) Cavill.), and non-host species. Simulation showed that the Orobanche seed bank dynamics in three-course crop rotations would result in a high Orobanche seed population and hence in low yields of the respective crops. Replacing the susceptible by resistant legumes such as woolly-pod vetch in some of the cycles of the rotations would keep the Orobanche infestation at a low level without reducing the proportion of legumes. A three-course crop rotation with faba bean would have to be changed to a 12-coursc rotation in which faba bean was grown every twelfth year but was replaced by woolly-pod vetch or other resistant legumes in seasons 3, 6, 9; 15, 18, 21; and so on. In the three-course rotations with chickpea or lentil, these susceptible legumes would be grown every ninth year but would have to be replaced in seasons 3 and 6; 12 and 15; 21 and 24; and so on, thus changing these three-course rotations into nine-course rotations.

Type
Research Article
Information
Experimental Agriculture , Volume 32 , Issue 4 , October 1996 , pp. 395 - 403
Copyright
Copyright © Cambridge University Press 1996

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References

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