... supplies in the world. The less developed countries usually locates at latitudes with extreme climate, therefore the soil are usually infertile and agriculture cultivation is hindered. In semi desert area for examples, the annual precipitation is generally lower than 500mm which is not sufficient for many types of crops. The condition is even worse in true desert area, which annual precipitation is lower than 250mm or even 100mm, like in Sahara Desert in Africa. The soil presence is aridisol, which is infertile with low organic content, low cation carrying capacity and moisture content. Therefore the land soil carrying capacity is very low and cannot handle intensive agriculture activities. In these areas, huge scale of farming is impossible as there is a lack of sufficient and reliable water sources, faming can be practiced along the river, oasis farming and marginal farming in small scales at desert margin. As there are insufficient crops ...

See this essay or coursework document in full right now