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Designing mixtures to suppress airborne pathogens (ReMIX Practice abstract)

{Tool} Designing mixtures to suppress airborne pathogens (ReMIX Practice abstract). Creator(s): Finckh, Maria R.. Issuing Organisation(s): University of Kassel, IFOAM EU. ReMIX Practice abstracts, no. 11. (2020)

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Document available online at: https://www.remix-intercrops.eu/content/download/4094/38994/version/1/file/%2311%20Designing%20mixtures%20to%20suppress%20airborne%20pathogens.pdf


Summary

Outcome
Pathogens are slowed down and less likely to adapt to all mixture components. Pesticide use is reduced, and varieties will be useful for a longer time.
Practical recommendations
- Variety mixtures: use varieties that can be harvested and used together but differ in their resistance to the pathogen in focus. Because over time the pathogen may adapt and overcome plant resistance mechanisms (Fig. 1 lower right), change the mixture and resistance composition over time.
- Species mixtures: use species that are not susceptible to the same pathogen. Choose species that either can be grown and used together (e.g. for feed) or that are easily separated (e.g. with different seed sizes). Alternatively, use a service species (e.g. undersown) in addition to the species to be harvested. In species mixtures, there is less risk for pathogens adapting. If species mixtures are too difficult, strip intercropping of different species is a good option.
Practical testing/ Farmers’ experiences
Variety mixtures of cereals work very well against rusts, mildew and Septoria tritici, or rice blast in rice. Similarly, species mixtures of cereals with beans or peas usually reduce airborne pathogens in both crops. Undersowing clover in cereals can reduce Septoria.


EPrint Type:Practice tool
Teaser:Airborne pathogens can be suppressed by intercropping.
What problem does the tool address?:Pathogens spread easily among genetically uniform plants (Fig. 1 top left). Adaptation leads to resistance breakdown and loss of valuable varieties.
What solution does the tool offer?:Grow mixtures of varieties or species that differ in their resistance to air-borne pathogens.
Country:Germany
Type of Practice Tool:Practice abstracts
Keywords:Cropping systems, Diversification, Low input agriculture, Intercropping, Plant protection, Pest control, Disease Prevention
Agrovoc keywords:
Language
Value
URI
English
cropping systems
http://aims.fao.org/aos/agrovoc/c_1971
English
diversification
http://aims.fao.org/aos/agrovoc/c_2344
English
low input agriculture
http://aims.fao.org/aos/agrovoc/c_34370
English
intercropping
http://aims.fao.org/aos/agrovoc/c_3910
English
plant protection
http://aims.fao.org/aos/agrovoc/c_5978
English
pest control methods -> pest control
http://aims.fao.org/aos/agrovoc/c_5726
English
disease prevention
http://aims.fao.org/aos/agrovoc/c_10394
Subjects: Crop husbandry > Crop combinations and interactions
Crop husbandry > Crop health, quality, protection
Research affiliation: Germany > University of Kassel > Department of Ecological Plant Protection
European Union > Horizon 2020 > Remix
International Organizations > International Federation of Organic Agriculture Movements IFOAM > IFOAM EU Group
H2020 or FP7 Grant Agreement Number:727217
Related Links:https://www.remix-intercrops.eu/, https://www.uni-kassel.de/uni/, https://www.organicseurope.bio/
Deposited By: De Simone, Dr. Ambra
ID Code:39735
Deposited On:21 Apr 2021 07:55
Last Modified:10 May 2021 11:35
Document Language:English
Status:Published

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