Abstract:
The present experiment was carried out in the research field of Sher-e-Bangla
Agricultural University (SAU), Sher-e-Bangla Nagar, Dhaka-1207 during the
period from November, 2016 to March, 2017 in Rabi season. The objective
was to observe the effect of biochar on the yield and quality of potato and to
find out the optimum dose of biochar along with inorganic fertilizer. The
experiment comprised of 8 treatments as T
(Recommended Fertilizer Dose); T
3
1
= Control, T
= RFD + Biochar @ 5 ton ha
= RFD
+ Biochar @ 10 ton ha
-1
; T
5
= ⅔ of RFD + Biochar @ 5 tonha
-1
= ⅔ of RFD
+ Biochar @ 10 ton ha
-1
; T
7
= ½ of RFD + Biochar @ 5 ton ha
; T
= ½ of
RFD + Biochar @ 10 ton ha
-1
. The experiment was laid out in a Randomized
Complete Block Design (RCBD) with three replications. The tested variety was
BARI ALU-7 (Daimant). Data were recorded on different yield attributes,
growth and quality of potato 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
majority of the observed parameters. The maximum plant height was recorded
from RFD + Biochar @ 10 ton ha
-1
1
, number of tubers hill
-1
6
-1
-1
2
= RFD
; T
; T
treatment. The highest number of stem hill
, weight of tubers g hill
-1
was found from biochar 5 ton
biochar ha
-1
treatment. The maximum yield of tubers (34.10 ton ha
) was
produced from RFD + Biochar @ 5 ton ha
-1
treatment. The minimum yield of
tubers (16.60 t ha
-1
) was produced from control treatment. The maximum data
of quality parameters like % dry matter content (23.41), specific gravity (1.065)
was also recorded in RFD + Biochar @ 5 ton ha
-1
treatment. From postharvest
soil analysis, the highest organic carbon (0.89%), organic matter (1.52%) was
recorded in ½ of RFD + Biochar @ 10 ton ha
-1
treatment. From this study, it
may be concluded that biochar had significant positive response for the
improving growth, yield and quality of potato and also fertility of the
postharvest soil was improved apprehensively due to application of biochar
along with inorganic fertilizers.
Description:
A Thesis
Submitted to The Department of Soil Science,
Faculty of Agriculture
Sher-e-Bangla Agricultural University, Dhaka
In partial fulfillment of the requirements for the degree of
MASTER OF SCIENCE (MS)
SOIL SCIENCE