EVALUATION OF SOME NEW MAIZE (Zea mays L.) CULTIVARS UNDER DIFFERENT AGRICULTURAL PRACTICES

Abstract

Four field experiments were conducted on calcareous soil at the Experimental Research Farm of Nubaria Research Station, Agricultural Research Center ( ARC ).

I. Response of maize cultivars to foliar spraying of microelements and its application time:

Two field experiments were conducted during 1995 and 1996 seasons. A split-split plot design with four replications was used. The main plots were randomly assigned to cultivars, the sub-plots to microelements and the sub-sub-plots to spraying time as follows :

A. Maize cultivars :

1. Single cross 10 (SC. 1 0).

2. Three-way cross 320 (TWC 320).

3. Giza 2.

B. Microelements :

Seven foliar spraying treatments with microelement solutions as well as water as control were used as follows :

1. Zinc sulphate, Zn S04. 7 H20 (l g/L).

2. Iron sulphate, Fe S04. 7 H 20 (1 giL.). ---- 3. Manganese sulphate, Mn S04. HzO (1 g/L) 4. 1 g Zinc sulphate + 1 g Iron sulphate/L.

5. 1 g Zinc sulphate + 1 g Manganese sulphate IL.

6. 1 g Iron sulphate + 1 g Manganese sulphate/L.