Abstract:
The experiment was conducted in the farm of Sher-e-Bangla Agricultural University,
Dhaka, Bangladesh during the period from December 2010 to April 2011 to study the
effect of various organic manure and inorganic fertilizer with different water management
on the growth and yield of boro rice (BRRI dhan29). The experiment consists of 2 factors
i. e. irrigation and fertilizer plus manure. Two levels of irrigations (i= Alternate wetting
and drying and 11= Continuous flooding) with 8 levels of fertilizer plus manure, as TO:
Control, T1
: 100% N
0gP,5K45S20Zn2
(Recommended dose), T
2: 50% NPKSZn + 5 ton
cowdung/ha, 13
: 70% NPKSZn + 3 ton cowdung/ha, T
4: 50% NPKSZn ± 4 ton poultry
manure/ha. T
5: 70% NPKSZn + 2.4
ton
poultry manure/ha,
1'6:
50%
NPKSZn 1-
5 ton
composllha and T
7
: 70% NPKSZn + 3 ton compostihs were used in the experiment. There
were 16 treatment combinations and 3 replications. Results revealed that irrigation had no
significant effect on the yield and yield parameters but a little bit higher yields were
obtained from continuous flooding (J). The Yield contributing characters and yields were
significantly affected by fertilizer and manure application. The highest effective tillers/hill
(13.3), plant height (88.56 cm), panicle length (21.07 cm), 1000 grain wt. (23 g), grain
yield (6.96 tiha) and straw yield (6.03 Uha) were found from T
4
(50% NPKSZn + 4 ton
poultry manurc/ha) treatment and the lowest in To treatment. The highest grain and straw
yields were found by the application of organic manure plus inorganic fertilizers compared
to the use of chemical fertilizer alone. Significantly the highest grain (7.13 tlha) and straw
yields (6.27 tlha) were recorded from 1
1T4
(Continuous flooding + 50% NPKSZn +
4
ton
poultry manurelha) and the lowest (3.84 t/ha) from loTo (Alternate wetting and drying +
control) treatment combination and 85% grain yield increased over control. Irrigation did
not significantly influence the grain and straw nutrient concentration and uptake while the
higher NPKS uptake was recorded in continuous flooding. The boro rice grain and straw
nutrient concentrations in grain and straw of boro rice were significantly affected by the
application of fertilizer and manure and application of fertilizer plus manure resulted in
higher nutrient use efficiency along with higher N, P. K and S uptake by boro rice. The
highest concentrations of grain N (0.997%). p (0.292%), K (0.361%), S (0.130%) and
straw NPKS were recorded from T treatment and lowest from
To
treatment. Similarly,
nutrient uptake by rice grain and straw was also higher in T
4
treatment compared to other
fertilizer treatment. The highest nutrient concentrations and uptake were recorded in 1
1T4
treatment combination. The levels of organic matter and nutrient concentration were
increased in the post harvest soils where manure plus inorganic fertilizer were used.
Description:
A Thesis
submitted to the Department of Soil Science
Sizer-c-Bang/a Agricultural University, Dhaka
in partial fulfilment of the requirements
for the degree
of
MASTER OF SCIENCE (M.S.)
IN
SOIL SCWNCE
SEMESTER: JULY-DECEMBER, 2010