Greenhouse Management Vegetables (Autumn 2018)

This course in greenhouse vegetables will take your production to the next level. Having produced vegetables in greenhouses, either plastic or glass, for several years you may wonder how to improve business results. Improving yield is an option, saving costs also helps. In this course for greenhouse vegetable cultivation we focus on improving cultivation and saving costs. Topics like a clean start of the cultivation, optimization of climate, energy saving, labour management and new developments in technology are addressed.

Participants are expected to have sufficient experience in vegetable production to cover the basics and be involved in discussions on cultivation related topics. Participants are also asked to bring up some relevant questions they want to solve in their company so during the course special attention is paid to this.

Time & Duration
5 consecutive days (9am – 5pm)

Course Date
Autumn 2018 (final planning to be determined)

* For group trainings the dates are flexible

Delphy Improvement Centre & Training facility
Violierenweg 3, 2665 MV Bleiswijk, The Netherlands

Course Subscription

Course Program (changes may occur for organisational reasons)

Day 1:Introduction, present state of greenhouse vegetable sector

  • Introduction of program, participants and Delphy; inventory of raised questions to be answered
  • Overview greenhouse sector worldwide and the Netherlands; status quo, trends and developments.
  • Field visit: Visit to Improvement Centre, explanation of state-of-the-art greenhouse system and different cultivation systems in Delphy Improvement Centre as in introduction to what is to come (depending on the trainees this may be during the afternoon session)
  • Back to basics: quick refresher of plant physiology and optimizing photosynthesis. The influence of plant hormones on the cultivation is also addressed.
  • Greenhouse climate. Using the Mollier diagram you will be able to have a better understanding on how to improve your climate and what measures will be helpful to improve plant productivity.

Day 2: Next Generation Growing

  • After the refreshing our knowledge on plant physiology and greenhouse climate yesterday we will address Next Generation Growing today. Originating from the necessity to save energy the strategy of lowering humidity changed from heating to bringing in outside air. In this workshop you will understand the principles and look for ways to apply this in your own situation.
  • A variety of plants sensors, climate measurements and other instruments is available on the market. What is useful to monitor, what do you actually measure and how can you use these data for optimisation of your production. Attention is paid to possibilities of digital growing and distance support.
  • Field visit: visiting production sites of one or more of the vegetable crops. Companies depending on the composition and interests of the group.

Day 3: Breeding and propagation

  • Field visit: The cultivation starts with the choice of the right variety for the cultivation system and market. In that process breeding companies play an important role. During a visit to one of the major breeding companies you will see the latest developments in breeding and seed quality and -treatment.
  • A healthy start is necessary to be successful in production. Propagation has different requirements than production and has become a specialists job in the Netherlands. In most countries, however, it is part of the production nursery. This lecture focusses on demands in hygiene during propagation, climate conditions as well as the planning and execution of propagation. It may include a field visit to a propagator as well, depending on the time of year and the composition of the group.

Day 4: Fertigation, IPM and labour management

  • Irrigation and fertilization are familiar to you, but what can we still optimize? During this session we will address different topics related to fertilizer management, reading analysis and calculation and adjustment of nutrient solutions depending on the preferences of the group (to be decided the first day of the course)
  • Another important topic on the list: Integrated pest management (IPM). As chemicals against pests and diseases are less favourable over the years, and more biologic control is used, crop protection is a very important topic.
  • An underestimated factor in production is often labour. Skilled labour is necessary, but also the labour has to be done in the right way with minimum time spend in case labour is expensive. If labour is less expensive it may take some more time, but still the job as to be done correctly. So labour is a point of attention in any case. This afternoon we will discuss various topics related to labour management based on your situation.

Day 5: marketing, post-harvest and certification

  • Field visit: Once the produce is harvested it should reach the consumer in good condition. During a visit to a packing station post-harvest treatment is explained and packing of produce can be observed. Discussion on the marketing is possible.
  • A lecture on post-harvest is addressing theory behind post-harvest and factors influencing the quality. It will provide insight in what is happening to your product and the importance of chain management.
  • Over the last few years we have seen many ways of certification of products. What is the value of a certificate, which would you need or want to have and why?
  • In the final session a round table is organised for final discussion and evaluation. During the closure session the certificates are handed and drinks offered.



€ 3.000,= (excluding VAT)

More information & Pre registration
Send an e-mail to: our education department