EVALUATION OF SOME SELECTED MINOR SOIL FERTILITY ELEMENTS IN THE LOAMY SOIL UNDER MIXED CROPPING, CROP ROTATION AND FALLOW IN BAMA AREA OF BORNO STATE, NORTHEAST NIGERIA

This research compared some selected soil fertility elements status on a loamy soil where mixed cropping (MC), crop rotation (CR) and fallow (C) were practiced for ten or more. Composite soil samples taken in the field were analysed in the soil laboratory for exchangeable calcium and magnesium using titrimetric method, exchangeable sodium using flame-photometric method, soil pH determined in distilled water soil ratio using ratio of 1:1, exchangeable acidity using titrimetric method of Mclean (19650, electric conductivity using super Natant liquid of the 1:2.5 and percent base saturated was calculated. Generally, there is significant difference (p