In 2011 Restrain started working with the University of Wageningen to define the process of ripening greenhouse tomatoes pre-harvest with Restrain ethylene generators. Since the CTGB authorisation in Holland in 2014 Restrain has been ripening tomatoes on the plant in greenhouses at the end of the crop, without any residues.
Working directly with tomato growers has resulted in a wealth of experience in delivering the desired result in quality and shelf life to both the growers and their markets. The Restrain system does not require any greenhouse modifications and is suited for use in almost all types of greenhouses. The dynamic properties of ethylene ensure an even distribution reaching and treating the entire crop. Over the years they have successfully treated many varieties ranging in size from the small piccolo cherry to the larger truss tomatoes and specialty varieties.
The safe and reliable in house developed and built ethylene generation system is user-friendly and is set up in minutes. Depending on the varieties, the treatment protocol is determined and the Restrain generator is installed to run for a specific time daily in the period leading up to the last harvest round. The controlled ethylene generation protocol maintains a natural ripening of the last tomatoes, resulting in a gradual harvest with no production peaks.
Restrain has recently received confirmation from the HSE that the use of Restrain in The UK to ripen tomatoes has been passed. Over the last 20 years, Restrain has worked with potato and onion growers in the UK providing ethylene solutions and they are looking forward to establishing new business relationships within The UK tomato sector.