SCHEDULING IRRIGATION OF MAIZE USING THE EVAPORATION PAN METHOD UNDER DIFFERENT FERTILIZATION REGIMES AND THEIR EFFECT ON SOIL CHARACTERISTICS

Abstract

Field experiments were carried out at Giza agricultural research station, Agricultural Research Center, Egypt, during 1992 and 1993 seasons to study scheduling irrigation of maize crop using the evaporation pan method under different fertilization regimes and their effects on soil physical analysis, water relations, growth parameters, yield and yield components and chemical analysis for grains, for S.C.10 maize cultivar.

The experiments were laid down in a randomised complet block factorial design with four replicates. The experiment included 27 treatment, which were the combinations of 3 irrigations regimes according to daily evaporation pan records, 3 nitrogen levels and 3 potassium levels. Thus the experiment consisted of 108 plot.

Sowing dates were May 16th and 26th in 1992 and 1993, respectively. While, harvesting of plants was 2nd and 12th of September in the same respective years.

The description of the experimental factors and treatments was as follows:

A. Irrigation regime: (evaporation pan coefficients)

l. 0.6 evaporation pan coefficient.

2. 1.0 evaporation pan coefficient.

3 1.4 evaporation pan coefficient.