Soilless cropping systems for outdoor vegetable production de Haan... · Soilless cropping systems...
Transcript of Soilless cropping systems for outdoor vegetable production de Haan... · Soilless cropping systems...
Soilless cropping systems for outdoor vegetable production
Clean, efficient and sustainable Workshop Water Management in Horticulture Brussels, 18 March 2015 Janjo de Haan
Outdoor horticulture in the NL
Flower bulbs
Tree nursery crops & flowers
Fruit crops
Field vegetables
Growers initiated research
Growers Challenges
Labour
Regulations
Market requirements
Soil quality & land
Research program
Objective Develop and implement profitable new cultivation systems that can comply with EU-regulations for water quality Outdoor horticulture Duration: 2009-2013, 2014-2017 Execution: Researchers, growers, advisors, suppliers Financed by government, growers and other parties
Program activities
Systematic design, testing and improving of new cropping systems Advice to growers Sustainability assessments Societal aspects
● Consumer perspectives ● Laws and regulations
Together with growers, suppliers, government and NGO’s
Deep flow system Lettuce and other planted leaf crops
Adaptation of floater for leek
Adaptation of flowter for sown leaf crops: baby leafs or spinach
Yield levels
soil bound
deep flow system
factor unit
Leek 65 286 4.4 tons/ha/year
Head lettuce
163 684 4.2 1 000 heads/ha/year
Spinach 52 229 4.4 tons/ha/year
Cauliflower 21 40 1.9 1 000 heads/ha/year
Expected sustainability performance of DF-systems per crop
Leek
Head lettuce Spinace
Cauli-flower
PLANET Water use + + + + Nutrient use and emission + + + + Pesticide use and emission + + + + Land use + + + + Energy use / GHG emissions - - - - PEOPLE Labour need + + + 0 PROFIT Profitability 0/- 0/- - -
Technical issues in development of DF-systems
Disease control ● Microdochium
panattonianum ● Yellow stripe virus
Potyviridae Propagation of plants in
combination with ● Substrate type of
plant plug ● Transplanting plants
Conclusions
Vegetables can be grown sustainable on DF systems ● Large production increase possible ● Potential for large emission reduction to water ● Various growers have started own experiments
Some technical problems still to solve ● Energy use and GHG-emissions ● Diseases ● Propagation system
Market development and spatial planning important aspects for upscaling
Thank you for listening