Physiological Studies on some Citrus Varieties

Some agriculturists recently call out for using bread yeast as a natural biostimulant instead of some growth regulators for improving growth and productivity of citrus trees so this work was planned to eveluate the impact of both GA; and Bread yeast on yield and yield components as well as physiocal and charateristics of fruits and leaves of washington navel orsnge trees in comparison with those of valencia orange var.