EFFECT OF BIO-FERTILIZER, PHOSPHORUS SOURCE AND HUMIC SUBSTANCES ON YIELD, YIELD COMPONENTS AND NUTRIENTS UPTAKE BY BARLEY PLANT

Two field experiments were conducted at Faculty of Agriculture
farm, Al-Azhar University, Nasr City, Cairo, Egypt, during 2016/2017
and 2017/2018 seasons, for evaluating the effects of phosphate bio-
fertilization (mycorrhizal fungi,phosphorine and Without inoculation),
two sources of phosphorus fertilizers (super phosphate, rock phosphate
and without phosphate) and humic substances (humic acid, fulvic acid
and without humic substances) as well as their interactions on yield, yield
components and nutrients uptake of barley cv. Giza 123. These
experiments contain 27 treatments; a split split plot design with three
replicates.
The obtained results showed that the bio-fertilization were
significantly increase of yield, yield components and nutrients uptake
(nitrogen, phosphorus and potassium) compared without inoculation, it is
worth mentioning inoculation Mycorrhizal fungi was superior to
Phosphorine;inoculation Mycorrhizal fungi were significantly increase of
yield components, phosphorus and potassium uptake by plant; phosphorus
solubilizing bacteria play role in phosphorus nutrition by enhancing its
availability to plants through slow release phosphorus from inorganic and
organic soil by solubilization and mineralization. It is interesting to say
that the applied phosphate source were significantly increase of yield,
EFFECT OF BIO-FERTILIZER, PHOSPHORUS SOURCE280
yield components and nutrients uptake (nitrogen, phosphorus and
potassium) compared without phosphorus, it is important to remember
calcium super phosphate was superior to rock phosphate; the positive
affect of super phosphate on yield behavior solubility nutrients also,
absorbing various nutrients. The applications of humic substance were
significantly increase of yield and nutrients uptake (nitrogen, phosphorus
and potassium) compared without humic substance, additionally humic
acid caused a significant increae grain, straw yields and nitrogen,
phosphorus and potassium uptake by barley plant. Generally, from these
results it can be concluded that the application of Mycorrhizal fungi,
super phosphate and humic acid could be used as a complementary for
mineral fertilizers to improve yield and nutrients uptake by barley plant.