LEADER on the FRENCH precision planter market, MONOSEM is also a company firmly turned towards the export market with 70 % of its production exported to over 80 countries throughout the world. A branch MONOSEM Inc. situated in KANSAS City, which supplies the North American market with Speciality Crop Planters. The MONOSEM products (Planters and cultivators) are manufactured in LARGEASSE (Deux-Sèvres – France). Two factories cover 27 000 m². Around 300 employees work in association with a solid policy of sub-contracting in place for over 50 years.

Company details

12, rue Edmond Ribouleau , LARGEASSE , 79 240 France

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Business Type:
Industry Type:
Agriculture - Crop Cultivation
Market Focus:
Globally (various continents)

1945 to 1960 The transplanters

Edmond RIBOULEAU, blacksmith in Largeasse in the Deux-Sèvres (France), takes an interest in the problems of transplanting and takes out a patent for thePREFEREE transplanter.

The product is a success, it is further improved and becomes theSUPER PREFER, the only approved machine for tobacco transplanting. Manufacturing is industrialized and exports begin.

1961 to 1972 The precision planters

Early in the 60's a precision planter with amechanicalmetering system by horizontal plate is designed together with aguidablecultivator.

Development on the planter continues with a special sugarbeet planter with a metering system by vertical cell wheel. Manufacturing increases, a second factory is built in Largeasse and sub-contracting is widely developed.

1973 to 1988 The pneumatic precision planters

The pneumatic precision planter is launched and obtains the silver medal at the International Farm Show in Paris. The Microsemattachment for the distribution of microgranulated products is launched together with theSUPER CROPself-guiding cultivators.

Michel RIBOULEAUtakes over from his fatherEdmond RIBOULEAUat the head of management in the company.

1989 to 1993 The new generation of planters

TheNew Generation pneumatic plantersNGandNG Plusare brought on to the market.  The NG Plus inaugurates the system of planting with double disc openers in Europe, today's market reference.

Caroline BERGERE(née RIBOULEAU) joins the company as General Manager andDominique BERGEREas Export Manager.

1994 to 1998 Development of the range of products

A newmechanical planter for pelleted sugarbeet is introduced– theMECA 2000.The special pneumaticMS vegetableplanter is launched. The transplanters are further developed with the introduction of theUL modelspecially designed for leeks.

The cultivators are equipped with a hydraulic steering system.

1999 to 2002 Launching of the NG Plus PRO planter

Launching of theNG Plus PRO planterwith press wheel which improves the seed germination and plant emergence.

NG Plus and MECAplanters improve for even more reliability, robustness and precision of sowing.

Caroline and Dominique BERGEREtake over fromMichel RIBOULEAUat the head of the company.

2003 to 2007 Launching of the NX planter

New NX planteris exhibited at the SIMA 2003. It is specially designed for sowing in Low-Till or No-Till conditions.

Further development is made on the planter range, MONOSEM designs a frame with variable inter row spacings :Extend.

The mechanical range of planters is further developed and theMECA V4is launched.

2008 to 2012 A new offer of frames

At the same time as the launching of theNG Plus 4, MONOSEM proposes new frames to satisfy the demands of farmers (High Capacity fertilizer, limited transport width, easily adjustable, …).

MONOSEM tests planting with theTwin-Rowin Europe and launches theWingFoldframe with the newNX 2metering units.

2013 to 2014 Launching of the Monoshox range

TheMonoshoxmetering unit range is exhibited at Agritechnica 2013. Available onNG Plus and NX, this metering unit range offers 'the MONOSEM quality planting at higher speeds' thanks to the Monoshox.EU suspension with shock aborber.

2015 Opening of the MONOSEM training centre

Monosem introduced its newcultuivator range, MULTICROP,during  SIMA 2015. Sturdy and versatile, it is used for cultivating row crops.

At the same time, in order to offer all the necessary know-how for an optimal machine performance, MONOSEM opened a training centrededicated both to distributors, technicians and users of MONOSEM machines.
The building dedicated to training is composed of 3 training rooms and a 700m² show-room.

During  Agritechnica 2015, MONOSEM exhibited its newplanter and fertilizer ranges with electric drive: Monoshox NG Plus ME, MECA V4E and front-mounted fertilizer with electric drive.

2016 MONOSEM joins Deere & Company

The RIBOULEAU MONOSEM company joins the Deere & Company group. The company thus has a privileged access to new technologies whilst retaining its brand and colours.