Abstract-Band KLIFF-Tagung 2.und 3.9.13

Thema 3: Auswirkungen auf Pflanzen, Tiere und Ökosystemecontrolled conditions in sterile sand compared to the summer peavariety Santana. Three weeks after sowing and inoculation diseasesymptoms were assessed and plant growth parameters measured.All of the tested pathogens resulted in disease development. F.avenaceum was the most aggressive pathogen causing severewilting symptoms on both varieties. Also, strong negative correlationwas observed between external tissue damage and the freshweight of pea plants. Reduction in fresh weight caused by thispathogen on Santana was 12.5%. P. medicaginis was second mostaggressive pathogen on Santana and reduced fresh weight for8.8% per unit of external tissue damage. F. solani caused moredamage on external tissue compared to M. pinodes, but reductionof fresh weight was 3.8% whereas for M.pinodes was 8.4%. Overall,EFB33 was less susceptible. Although, F. avenaceum was themost damaging pathogen also on EFB33, statistical analysis didnot show difference in external tissue damage amongF.avenaceum, P. medicaginis and F. solani. M. pinodes was theleast aggressive pathogen. On the other hand, there was significantdifference in reduction of fresh weight per unit of externaltissue damage for all of the tested pathogens. Strongest reductionwas measured in treatment with F. avenaceum, 15.8%, followedby M. pinodes, 7.8% and P. medicaginis, 4.9%. Fresh weight ofEFB33 was not affected by inoculation with F. solani. This studyimplicates that EFB33 is more tolerant to tested pathogens, and ifincluded in crop rotation can be potential solution for overcomingrecent decline in pea production in organic farming in Germany.Ascochyta complex, Fusarium spp., Pisum sativum L., root rotOccurrence of Fusarium species and Ascochyta complexpathogens in the crop rotation winter pea - maize - winterwheat under variable climatic conditions in organic agricultureJelena Bacanovic, Jan Henrik Schmidt, Christian Bruns,Maria R. FinckhUniversität Kassel, Fachbereich Ökologische AgrarwissenschaftenThe key for the success of the rotation winter peas as green manurecrop followed by maize and wheat is the ability of peas to fix82