Influence des apports de la matiere organique sur la stabilite structurale et la fertilite des sols dans le cadre de l’agriculture de conservation dans la plaine d’Annaba

Abstract

This work aims to study the effect of the contribution of organic matter on soil under a conventional system and other soil is not amended under direct seeding system to highlight the role played by the addition of organic matter in preserving the soil structure. We considered two stations, one is led to the conventional system with the addition of organic matter (station A), and the other direct seeding without addition of organic matter (station B). Nine samples from station A and eight samples station B. The test of structural stability of Le Bissonnais has been used in this study. The results show that the organic matter content is very high in samples from station A relatively to station B. The structur of the two stations is moderately stable to very stable. The results also show that the rate of organic matter is not the only condition for the stability; there are other factors such as (tillage, climate hazard ....) which can also influence this physical property of the soil.