Jean-Michel Savoie

1. IntroductionMaize (Zea mays L.) is an important food security and income-generating crop in various areas of the world. Improvements in yields had been obtained by selection of hybrids, mechanisation, irrigation, use of mineral fertilisers and phytosanitary products, leading to an increase in the world production associated with global trades. Besides this agroeconomic system, farmers produce m ...