Abstract:
The experiment was carried out at the experimental farm of college of
Agriculture – University of Diyala during the winter season of 2009 – 2010.
to study the effect of forage mixture which represent the first factor with
different ratios of seeding rate – barley Hordeum vulgare L var.Ibba99 which
belong to Poaceae family and berseem(Egyptian clover )Trifolium
alexendrinum L var.miskawi from Fabaceae family. The mixture ratios was :
1- 75% barley + 75% berseem clover (first mixture)
2- 50% barley + 100% berseem clover (second mixture )
The second factor was Gibberellic acid with 0.01cncentration, , and
without GA3.The planting date was 15/10/2009 .The data reported for the
flowing traits,Green forage yield kg/ha – Maximum height of barley
plants/ cm – Maximum height of berseem plants/cm – Number of barley
tillers /m2 – number of berseem stems/m2. The data were analyzed
statistically with SPSS system.LSD were calculated to first.
The result show that the difference in the ratio of each crops barley
and berseem clover in the mixture was with clear effect in the growth
characteristics ,whereas growth regulator gave increase in average of
high plant and decrease of tillers to each crop in the mixture , while the
speed of green fodder growth increased witch conducted to effect the
forage yield positively , the use of second mixture gave heights increase
in average of green forage yield to all cutting which reached to44.4% ,
42.4% , 33.3% , 27,5% respectively , while the second mixture with
growth regulator gave high increase in average of green forage yield
which reached to 71% , 66.8% , 51.3% to the first three cutting
respectively.
