Improving the competitiveness of rapeseed crops

Rapeseed crops remain in the ground for much of the year, necessitating interventions at several time points during the year.

Improving the performance of this crop is one of the everyday concerns of Terres Inovia. The institute accompanies farmers every step of the way, in a permanent dynamic of innovation, to simplify cropping practices, decrease dependence on inputs, improve pest control and optimize fertilizer use.

Contact : Jean Lieven


Our goals

To communicate reference information to optimize crop production at ensure successful implantation of the crop.

To provide advice concerning fertilizer applications for rapeseed.

To propose integrated management strategies for combating the diseases, pests and weeds of winter rapeseed.

To monitor the cropping season in real time


Our main actions

Ensuring the success of rapeseed crops

The establishment and development of rapeseed are closely linked to the quality of implantation. By providing regional advice adapted to different pedoclimatic contexts, Terres Inovia optimizes production at particular sites through:

-The provision of diagnoses/advice

-The acquisition of reference data in specific contexts, such as very early sowing, soils very rich in organic matter, the management of the period between the harvest of the preceeding crop and the implantation of rapeseed, and the cultivation of rapeseed without the use of glyphosate.

Providing advice for nitrogen fertilization based on the Réglette azote colza®

Terres Inovia has collaborated with various actors from the private sector to develop new operational and commercially available tools for determining nitrogen fertilizer applications for rapeseed: Farmstar Expert (Airbus), Cérélia® (Geosys), and the tools Wanaka, Airinov, N-Pilot® (Borealis), ImageIT (Yara).

Terres Inovia validates the calibration curves for these tools, using data collected during each campaign for a network of more than 200 georeferenced agricultural plots, with weighing and measurements performed in the field. In the framework of the Farmstar Expert service, it goes so far as to validate the nitrogen fertilization advice delivered to farmers.

Digital rapeseed: towards the dynamic monitoring of winter rapeseed at the regional scale

New technologies constitute a major step forward in the agricultural world. In this context, several organizations specializing in agronomy, remote sensing and digital technology have come together in the “digital rapeseed” project run by Terres Inovia, with the support of Sofiprotéol, for the the 2017-2020 period. The aim: to construct a pilot real-time monitoring system for rapeseed crops throughout the growth cycle, using satellite sensors and connected objects in plots.

Farmers will thus be able to monitor their plots more closely, agricultural advisers will be able to perform a spatialized inventory of crops in their area of activity, and cooperatives will be able to develop a territorial vision of production.

Improve control of winter flea beetle and terminal bud weevil

Winter flea beetle larvae and terminal bud weevils have been on the rise for several years.

To help producers better manage this risk, a new decision rule has been published since 2019. It integrates agronomic factors by taking into account various criteria (rapeseed biomass, pivot length, risk of nitrogen hunger, geographical area) .

This decision rule will evolve by integrating user feedback. An agronomic risk assessment grid can already be downloaded from the website.


Varietal advice based on different agronomic criteria

In order to provide rapeseed producers with information enabling them to choose the varieties best suited to their situation, Terres Inovia has been offering recommended lists for 10 production areas since 2018.

Developed according to agronomic criteria of interest, these lists guarantee a level of production and robustness. To refine its advice to producers, the institute changed its classification of varieties in 2019 to take into account new genes for resistance to phoma and thus reduce the risk of the presence of this disease on the plots.

Thus, the use of varieties having the resistance genes Rlm3, Rlm7 or RlmS, or more of these genes, must henceforth be practiced in alternation with varieties without them. The institute also integrated 24 varieties - there were only 7 in 2018 - with partial resistance to the TuYV virus, which can cause turnip yellows, transmitted by the green peach aphid.

All these varieties are available on the myvar tool (