Composition minérale foliaire des variétés zaïroises de Zea Mays L. et tolérance à l'acidité du sol

Abstract

Leaf mineral composition of Zairean Zea mays L. varieties and tolerance to soil acidity. The aim of this paper is to put foliar mineral composition of zaire an Zea mays L. varieties in relation with their tolerance to soil acidity. Fourteen varieties, of which two from Europe, were sown in Kisangani (Zaire) in acid versus limed soil. Their foliar mineral composition was established at the Free University of Brussels, Laboratory of Vegetal Ecology and Genetics. In general, sensitive varieties to aluminium and manganese, responsible elements of tropical soil acidity, have high foliar contents of P, K, Mn, and Al and less foliar contents of Mg as well as weak Ca/K, \/(Ca + Mg)/K and performance index values.

Keywords

• Mineral composition
• Zea mays L.
• Acidity
• Performance index