Improved soil and water conservatory managements for cotton-maize rotation system in the western cotton area of Burkina Faso

摘要: Integrated soil fertility management combining additions of organic and mineral fertilizers reduced ploughing frequencies is a prospective option for sustainable cropping systems. In the cotton cultivation area Burkina Faso agricultural land gradually degrading due (at least in part) to increases mechanization use fertilizers, herbicides pesticides. The objective work underlying this thesis was test techniques improve fertility, productivity (Gossypium hirsutum) maize (Zea mays). For purpose, research program initiated 2003 at Bondoukuy western growing zone country. On-farm experiments two tillage regimes - annual ox-ploughing (AP) ox-ploughing/hand hoe scarifying alternate years, referred as (RT) with or without compost addition cotton-maize rotation were carried out on common types (a Ferric Lixisol Luvisol). We investigated effects treatments on: (i) aggregate stability, (ii) infiltrability, (iii) crops nutrient uptakes yields. Reduced resulted greater macroaggregate stability than both types. (in combination tillage) increased saturated hydraulic conductivity (Ks) compared (control). status related fertilizer inputs, carbon nitrogen contents highest (ca 0.6% C 0.05% N) plots where applied, after third year experiment. Reducing had no clear effect uptake, but applications N P uptake by On types, fibre yields under regime higher those obtained control, although differences not always statistically significant. trend production was: control Lixisol, while it addition, Luvisol. results supported earlier conclusion that crop depend seasonal rainfall pattern. spite short term experiment, seems be suitable smallholder farmers. As recommendation; system should mix application other matter source fertilizer, consider frequency.