Effect of reduced tillage and manure on soil physicals properties and cotton yields in south-sudanian region of Burkina Faso

Cotton production is a key factor in socio-economic development and modernization of agriculture in Burkina Faso. However, the sustainability of cropping systems based on cotton is more and more threatened by land degradation exacerbated by inappropriate cultural practices. Therefore agronomic trials were carried out, over two rainy seasons (2010-2011), in a research station located in the South-Sudanian region of Burkina Faso, for assessing the effects of reduced tillage techniques combinated to increasing doses of organic manure (1, 2 or 4 t ha-1 every 2 years)on the physical properties of soil (soil structural stability, soil mechanical resistance) and the cotton yiel