Our books
![](https://www.deleplanque.fr/wp-content/uploads/2018/03/documentation-livrecoprod-466x418-72dpi.png)
The book of organic fertilisation 2018
By-productsThis book provides detailed information regarding our range of organic and organic-mineral fertilisers and soil conditioners, ordered by origin, type and use of the products.
![](https://www.deleplanque.fr/wp-content/uploads/2018/01/documentation-livre-466x418-72dpi.png)
The book of hybrid rye 2017
RyeRye is part of the orientations and objectives of agriculture today: meet food, energetic and environmental challenges. Find out more about hybrid rye in order to produce more and better!
![](https://www.deleplanque.fr/wp-content/uploads/2017/11/livre.png)
The book of catch and cover crops 2017
Cover cropsThis book in its latest version addresses the role of catch and cover crops as a whole: fight against sugar beet cyst nematodes, main crops rotations, improvement of soil quality and fertility, regulation...