Development of SCV techniques is threefold: on station experimentation initiated in 2000, on farm experiment started in 2001, and on mixed experimentation (in the villages but under the supervision of project staff) which begun in 2002. Only the farm results from the farm experiment in 2002 are presented here.
Designing of direct seeding cropping systems with northern cameroonian farmers (poster)
Trophic control of tillering rate of three rice cultivars (Oryza sativa L. and O. glaberrima Steud.) under different drought levels
Tillering capacity of rice depends on the genotype, on resources available for growth and the level of physiological stresses. The aim of this work is to examine tillering dynamics of three genetically contrasting rice cultivars: IAC47 (upland-adapted, O. sativa, japonica, low-tillering), Javaé (lowland-adapted, O. sativa, indica, high-tillering) and CG14 (broadly adapted, O. glaberrima)
Effects of direct seeding techniques on soil fertility indicators under equatorial climatic conditions
I n the Boumango agroindustrial area (2°S, 13°E) of Gabon, 2000 ha has been intensively cropped since 1980 under mechanized conditions, with an annual sequence of maize and soybean. New alternative cropping systems are now required to solve the cultivation problems that have arisen. Experiments were carried out to test systems involving direct seeding on plant cover that were initially developed in central-western Brazil. Several soil fertility indicators were monitored over a 3-year period, their evolution under three different crop management sequences and two fertilizer levels are reported.