The application frequency of all fertilizers including the carrier control was every 2 weeks during the vegetative stage, then every week during the reproductive and maturation stages. The following agronomic data were recorded upon harvest; plant height, panicle length, number of grains/panicle, flowering day, harvest day, and grain yield (kg ha 1 ). The maximal values of height, panicle length and number of grains per panicle were averaged from 30 plants from each plot