Ghana - Agronomic aspects of the kpong pilot irrigation scheme - Report to the government.

abonos agronomia agronomie agronomy analyse de sol arroz climatologia climatologie climatology control de plagas coton cotton crop rotation engrais farm equipment fertilizers irrigation systems lutte antiravageur mais maize malezas mauvaise herbe mijos millet millets pest control precipitation rendement rendimiento rice riz rotation culturale sistemas de riego soil analysis sorghum sugarcane tabac tabaco tobacco weeds yields