SUSTAINABLE PRODUCTION OF FALSE FLAX (CAMELINA SATIVA(L.)CRTZ.IN 1995 TO 1997 AND OCCURRENCE OF FUNGAL AND BACTERIAL DISEASES
V.H. P.AUL , I. FOLLER, M. HENNEKEN,
Universitat-Gesarnthochschule Paderborn,. Fachbereirh Agrarwirtschaft, Lubecker Ring 2, D-59494
Background and objectives
False flax or Gold of Pleasure (Carnelina sativa (L.) CRTZ.) is a very ancient oilseed crop. The oldest findings of the cultivation of false flax are from 2000 b. C. The cultivation in Germany continued in smart are-as until the 1950's. In the search for regenerable energy resources false flax has been found to be a possible option, since oilseed Plants with a high lincleic acid content are of interest in non food industries. The advantages of false flax are its high adaptability to soil types and climatic conditions and its short growing period of 100-120 days. Under low input cultivation and on soils with low sorption capacity and continerrtal climate, a yield of 30 dvha can be reached . At present 6 summer and 1 winter false flax cultivars are registered in Germany.
The objectives of the study presented here were to evaluate the disease susceptibility of false flax under field conditions, to identify and isolate the main pathogens and, to supply infection methods for breeders to use in resistance breeding.
Material and Methods
In field plot trials regarding the cultivation of false flax as a regenerable oilseed coop, ten cultivars/bree,ding lines of false flax were grown at ten locations in Germany and assessed for disease susceptibility over a three year period. The assessments were made at the leaf production, stem extension, flowering and maturity growth stages. In the first year of this study ten plants per plot were assessed for disease symptoms. The corresponding pathogens were then identified using the common pliytopathologicai methods. During the second and third year the entire plots were assessed.
Results and Conclusions
The pathogens observed were: Albugo candida (white rust), Botrytis cinerea (grey mould), Erysiphe spp. (powdery mildew), Pefmospora parasitica [Syn. P. camelina] (downy mildew), Rhizoctonia solani (sore shin and darnping off), Scierotinia scierotiorum (stem rot) and Pseudomonas synngae pv. spec. a bacterial anthracnosis.
In 1995 and 1996 all cuttivars/breeding lines of false flax developed little diseases at most locations. The symptom that appeared most often was caused by Pseudomonas syringae pv. spec.. In one location up to 75% of the plants were affected. The yields ranged between 10 and 23 dt/ha in 1995, with an average of about 15 dt/ha and, between 7 and 33 dt/ha in 1996, with an average of about 20 dt/ha. In 1997 a greater disease incidence of downy mildew (Peronospora parasitica) with up to 46 % in one location and grey mould (Botrytis cinerea) with up to 90 % in another location was found. The yields ranged between 9,6 and 31,1 dt/ba with an average of about 20 dt/ha. No correlation between disease incidence and yield reduction was found.
1. Bramm A.; Dambroth M.; Schulte-Kome S. 1990 Landbauforschung Volkenrode, 40(2):107-114