This is so contrary to my experience I have to mention it.

The increasingly urbanized youth are often reluctant to help with digging and hoeing ... "The consequence: A lot of land – particularly rice fields – is not exploited. This has increased the suffering of some families who have a hard time feeding themselves during certain periods of the year."

In the area of Kenya I live in, very little land is not exploited. For generations, people have had large families, and divided the land up among their sons. This has reduced the average plot size to below five acres. At this point, traditional farming methods do not yield enough to feed a family.

Senegal's situation, to be frank, seems enviable to me. They are at a much more sustainable level of population.