Abstract:
The present experiment was carried out in the research field of Sher-e-Bangla
Agricultural University (SAU), Dhaka, Bangladesh, during the period from
November, 2021 to March, 2022 in Rabi season. The objective was to observe
the effect of biochar on the yield of wheat and soil properties and to find out the
optimum dose of biochar along with inorganic fertilizer for achieving the
maximum yield of wheat. The experiment comprised of 8 treatments as T
1
=
Control, T
2
= RFD (Recommended Fertilizer Dose); T
3
= RFD + Biochar @ 1.0
t ha
-1
; T
4
= RFD + Biochar @ 1.5 t ha
-1
; T
5
= RFD + Biochar @ 2.0 t ha
=
75% of RFD + Biochar @ 1.0 t ha
-1
; T
7
= 75% of RFD + Biochar @ 1.5 t ha
;
T
8
= 75% of RFD + Biochar @ 2.0 t ha
-1
. The experiment was laid out in a
Randomized Complete Block Design (RCBD) with three replications. The
tested variety was BARI Gom-32. Data were recorded on different growth,
yield attributes of wheat and nutrient status of postharvest soil. The collected
data were statistically analyzed for evaluation of the treatment effect. Results
showed that a significant variation among the treatments in respect of majority
of the observed parameters. The maximum plant height was recorded from
RFD + Biochar @ 2.0 t ha
-1
treated plot. The highest number of spike length,
number of spikelets spike
-1
, number of grains spike
-1
was found in T
4
treatment.
The maximum yield of wheat (4.21 t ha
-1
) was produced from T
5
(RFD +
Biochar @ 2.0 t ha
-1
) treatment which was 12% higher over T
2
(RFD) and
100% higher over T
1
(control). The minimum yield of wheat (2.10 t ha
) was
produced from control treatment. From postharvest soil analysis, the highest
organic carbon (0.76%), organic matter (1.31%) was recorded in T
8
(75% of
RFD + Biochar @ 2.0 t ha
-1
) treatment. From this study, it might be concluded
that biochar had significant positive effect on the improvement of growth and
yield of wheat when it applied in combination with recommended dose of
chemical fertilizers. The fertility of the postharvest soil was also improved
apprehensively due to application of biochar along with inorganic fertilizers.
Description:
A Thesis
Submitted to the Faculty of Agriculture
Sher-e-Bangla Agricultural University, Dhaka,
in partial fulfillment of the
requirements for the degree of
MASTER OF SCIENCE
IN
SOIL SCIENCE
