Ronald has grown up close to the Westland in the Netherlands and already for more than 29 years active in the horticultural sector. Started as fertilizer specialist by a big cooperative distributor. He was advising the growers in the Benelux on all questions about fertilizers and optimal growing. Since more than 16 years working for the Haifa Group in North West Europe as sales and product manager. Ronald is also the chairman of Haifa Groups international Task Force Modern Greenhouses.
The presentation is about Polyphosphate’s, during the presentation you get the answers on the following questions:
