New vegetable varieties must be grown at different regional sites to evaluate their specific potential with respect to time and duration of the harvesting period, their yield and quality. Additionally, cultivars with resistance or tolerance to pests and/or pathogen must be tested under defined conditions in the field. In future, more information is needed on the interaction of genotypes and environment. This should provide more scientific knowledge of the growth patterns of varieties in relation to local climatic conditions which should enable the prediction of optimal harvest time and transition to the generative stage (bolting). The variation within varieties with respect to form and yield is an other subject of investigation, e.g. for onion the regression coefficient between onion diameter and onion weight is R2= >0.97. Furthermore, changes in the demands of consumers and the market for new goods, e.g. packed salad mixtures – baby leaf – mini-vegetables and organically grown products must be considered in further experiments to be performed in close co-operation with the research groups working on production systems, plant protection, storage and processing.
Stucky T., Hochstrasser M., Meyer S., Segessemann T., Ruthes A. C., Ahrens C. H., Dahlin P., Pelludat C.
The root knot nematode (RKN) Meloidogyne incognita causes damage in field and greenhouse crops. Agroscope researchers have developed a new screening test to identify bacteria that antagonise this agricultural pest.
With CULTAN fertilisation, nitrogen is injected into the soil as an ammonium solution. Multi-year trials conducted by Agroscope show that this method reduces nitrogen leaching by an average 38% without negatively affecting yields.
Tuta absoluta is one of the most destructive pests of solanaceous crops. Agroscope has developed a statistical model to study the population dynamics of the pest and its parasitoids and allows interventions to be optimally planned.