GWorkS-model simulates crop operations in greenhouses

Apr 25, 2014 by Dr. J (Jan) Bontsema
GWorkS-model simulates crop operations in greenhouses

Wageningen UR Greenhouse Horticulture and Wageningen University, group Farm Technology developed a simulation model for labour in greenhouses.

Global competition urges growers to continuously improve labour efficiency and to innovate crop operations in order to control labour costs and to offer appealing jobs and healthy work conditions in greenhouses. Computer simulation was used to find effects of organizational and technical modifications in crop operations. For this purpose the GWorkS- was developed.

The GWorkS model was applied in rose cultivation. It creates short-term work schedules and simulates the crop operations harvest, disbudding and bending of roses with a limited number of employees and trolleys. Several labour scenarios were simulated. A real labour management scenario as applied in a Dutch cut-rose grower company was used as a reference. Harvesting, disbudding and bending represent more than 90% of crop-bound labour time in the greenhouse. The model calculates the labour time in these processes well with 10.9 per s rose in the simulation and 11.5 s per rose in practice.

The scenarios showed that labour management is important because difference in labour time for harvest, disbudding and bending was up to 5 s per cut-rose. The maximum difference in labour costs was € 7.1 m-2 per year. The best scenario showed labour cost saving of € 4 m2 per year compared to practice.

Explore further: Investment helps keep transport up to speed

More information: Ooster, A. van 't; Bontsema, J.; Henten, E. van; Hemming, S. Simulation of harvest operations in a static rose cultivation system. Biosystems Engineering (2013). - ISSN 1537-5110. library.wur.nl/WebQuery/wurpubs/446804

Ooster, A. van 't; Bontsema, J.; Henten, E.J. van; Hemming, S. Sensitivity analysis of a stochastic discrete event simulation model of harvest operations in a static rose cultivation system. Biosystems Engineering 116 (2013)4. - ISSN 1537-5110 - p. 457 - 469. library.wur.nl/WebQuery/wurpubs/446301

Ooster, A. van 't; Bontsema, J.; Henten, E. van; Hemming, S. GWorkS - A discrete event simulation model on crop handling processes in a mobile rose cultivation system. Biosystems Engineering 112 (2012)2. - ISSN 1537-5110 - p. 108 - 120. library.wur.nl/WebQuery/wurpubs/430613

add to favorites email to friend print save as pdf

Related Stories

Climate change linked to declines in labour productivity

Feb 25, 2013

Increases in humidity caused as a result of climate change are reducing labour productivity and it's only likely to get worse over time, argue researchers from America's National Oceanic and Atmospheric Administration.

Investment helps keep transport up to speed

Apr 16, 2014

Greater investment in education and training for employees will be required to meet the future needs of the transport and logistics industry, according to recent reports by Monash University researchers.

Recommended for you

Cell division, minus the cells

1 hour ago

(Phys.org) —The process of cell division is central to life. The last stage, when two daughter cells split from each other, has fascinated scientists since the dawn of cell biology in the Victorian era. ...

Scientist creates automatic birdsong recognition app

1 hour ago

Dr Dan Stowell, an EPSRC Research Fellow in QMUL's School of Electrical Engineering and Computer Science, has used a grant from Queen Mary Innovation to develop a prototype for an app that turns his research ...

A new method simplifies the analysis of RNA structure

1 hour ago

To understand the function of an RNA molecule, similar to the better-known DNA and vital for cell metabolism, we need to know its three-dimensional structure. Unfortunately, establishing the shape of an RNA ...

New research reveals fish are smarter than we thought

1 hour ago

(Phys.org) —A new study from researchers in our Department of Psychology with colleagues at Queen Mary University of London has reported the first evidence that fish are able to process multiple objects ...

User comments : 0

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.