Introduction to Chrysanthemum production

This course is specially designed for new or starting growers of Chrysanthemum. For advanced chrysanthemum growers a tailor made training can be offered. This five day intensive course on chrysanthemum production in greenhouses contains both cutflowers and potted plants. Topics addressed are choice of assortment to grow, substrate, management of fertilizer, irrigation, greenhouse climate, crop protection and post-harvest treatment. A number of field visits will illustrate the Dutch state of art cultivation as well as the market.  Upon completion of the course participants are able to start growing chrysanthemums in a greenhouse.

Time & Duration: 4 consecutive days (9am – 5pm)
Course Dates 2018: to be determined
Location: Violierenweg 3, 2665 MV Bleiswijk
Price per person: on request
Course Subscription:  Yes, I would like to register for this course

Day 1: Introduction to the course, the sector and plant physiology

Introduction of Delphy, the participants and the training
Sector overview of chrysanthemum production worldwide and in the Netherlands, trends and developments.
Plant = factory: Considering the plant as a sugar producing factory there is a need to understand the influences of various factors on this factory. Topics addressed are botany of chrysanthemums followed by explanation of the growth and development of various parts of the plant. Plant physiology will explain photosynthesis, respiration, transpiration and the various growth factors like light, CO2, temperature and humidity.
Field visit: in depth explanation of state-of-the-art greenhouse systems and cultivation concepts in the Improvement Centre
Vase life test: setting up a vase life test with Chrysanthemum

Day 2: Set up of cut-chrysanthemum production location in theory and practice

General requirements for starting chrysanthemum production: types of greenhouses, layout, cultivation systems, cold store, soil, technical equipment, cuttings etcetera
Start of the cultivation:
The cultivation starts with the choice of a type and variety of Chrysanthemum. Not only making this choice is important, but also the production or buying of the right quality and quantity young plant material. This is extensively explained this morning.
Soil and fertilizer management:
The composition of the soil and soil structure are of major influence for a successful cultivation as the roots have to be able to establish in the soil or substrate and take up all required nutrients. The nutrients, provided by fertilizers are the second focus in this module. Function of different nutrients is explained and symptoms of excess and deficiency shown.
Light and screening
Light is an important growth factor as discussed during plant physiology yesterday. For chrysanthemum not only light intensity is important, but day length determines whether or not the chrysanthemum starts flowering or remains vegetative. How to use the light and screens to obtain the maximum result is explained in this module.
Field visit: visit a grower of cut-chrysanthemums

Day 3: Cultivation of Chrysanthemum

The climate in the greenhouse has to be optimal for the plant to function well and give good quality production. In this module the general climate settings and differences for various types/ varieties and potmums/ cutflower production are highlighted.
Pest- and disease management
Although a grower does all he can to prevent pests and diseases to occur the management of crop protection has to be put in place. This module includes the major threats for chrysanthemum in terms of pests (insects, mites) and diseases (bacteria, fungus, virus) and how to prevent or cure the problem.
Scheduled cultivation
As the growth and flowering of chrysanthemum is easily manipulated with cultivation measure, a schedules cultivation is possible. Development of a schedule for year round production for the own location is practices in this workshop.
Avoiding mistakes
based on practical examples errors and mistakes that often occur with starters in the production are shown and discussed.
Field visit: visit a grower of cut-chrysanthemums

Day 4: Postharvest and future

Field visit: to a breeder of Chrysanthemums
Vase life test: checking the results of the vase life test with Chrysanthemums started on Monday
After the chrysanthemums are harvested the product continues to use resources, but the supply of water, nutrients and energy is limited or absent. How can the product reach the consumer in (almost) the same condition as it was harvested in the greenhouse? During this module the chain from grower to consumer is looked at and optimal conditions discussed.
Developments in the Netherlands
This module highlights the latest developments in technology, including the Next Generation Growing and the use of LED-light.
Round table with final discussion, evaluation and certification

For more information please contact Jeroen van Buren