Abstract:
A field experiment was carried out at the experimental plot of Sher-e-Bangla
Agricultural University, Sher-e-Bangla Nagar, Dhaka-1207 during the period from
November, 2021 to March, 2022 in Rabi season to find out the effect of biochar on
yield and quality of potato tuber. In this experiment test crop variety was Diamant. The
experiment comprised of the following 9 treatments as T
= Control (No chemical
fertilizer and biochar), T
2
= RFD (Recommended Fertilizer Dose), T
ii
1
= RFD + Biochar
@ 1 t ha
-1
, T
4
= RFD + Biochar @ 1.5 t ha
-1
, T
5
3
= RFD + Biochar @ 2 t ha
= 75%
of RFD + Biochar @ 1 t ha
-1
, T
7
= 75% of RFD + Biochar @ 1.5 t ha
= 75% of
RFD + Biochar @ 2 t ha
-1
and T
9
= No chemical fertilizer + Biochar @ 2 t ha
. The
experiment was laid out in a Randomized Complete Block Design (RCBD) with three
replications. Data were recorded on different yield attributes, yield and quality of
potato and nutrient status of postharvest soil and significant variation was recorded for
different treatments. The maximum plant height (18.33, 35.28 and 56.94 cm) at 20, 40
and 60 DAP respectively) was recorded from T
3
-1
-1
, T
, T
8
treatment (RFD + Biochar @ 1 t ha
).
Biochar appeared to be a potential source of organic amendment. Tuber yield and
quality of potato significantly increased when biochar was applied in combination with
inorganic fertilizers. The maximum yield of tubers (29.77 t ha
-1
6
-1
) was recorded from T
treatment (RFD + Biochar @ 1 t ha
-1
) and the maximum marketable yield (71.67%)
was recorded from T
5
treatment (RFD + Biochar @ 2 t ha
-1
). The fertility and quality of
soil also improved to a great extent. From this study, it was found that biochar had
significant positive response for improving yield and quality of potato and also fertility
of the postharvest soil apprehensively due to application of biochar along with
recommended 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
