Abstract:
A field experiment was conducted at the research field of Sher-e-Bangla
Agricultural University, Dhaka, during the period from November 2010 to April
2011 to investigate the effect of seed tuber size and harvesting time on morphophysiological
characters, yield attributes and yield of potato. The experiment
comprised of four different size of seed tubers viz., 28-<45 mm, 20-<28 mm, 10<20
mm and <10 mm and four harvesting time viz., 70 (DAP), 80 DAP, 90 DAP
and 100 DAP. The experiment was laid out in randomized complete block design
factorial with three replications. The growth parameters such as stems hill
,
leaves hill
-1
, tuber yield plot
-1
, marketable yield plot
-1
and tuber yield ha
were
significantly influenced by seed tuber size and harvesting time. Results revealed
that in general, plant height, stems hill
-1
, LA plant
-1
increased with increasing seed
tuber size but yield attributes and yield increased with 28-<45 mm tuber size. The
highest tuber yield hectare was recorded in the tuber size of 28-<45 mm due to
increased of tubers hill
-1
and tuber yield plot
-1
. In contrast, the lowest tuber yield
ha
-1
was recorded in the smaller seed tuber of <10 mm. Results showed that stems
and leaves hill
-1
, LA, TDM and tubers hill
-1
, single tuber weight and tuber weight
plot
-1
increased with increasing time of harvest upto 90 DAP. The highest number
of stems and leaves hill
-1
, LA, TDM, tubers hill
-1
, single tuber weight and tuber
weight plot
-1
were observed in the harvesting time 90 DAP and the lowest in
harvesting time 70 DAP. However, the highest gross tuber yield ha
was observed
in the harvesting time 90 DAP and the lowest was recorded in 70 DAP. For
combined effect of seed tuber size and harvesting time, the highest gross tuber
yield was observed in the treatment combination of 20-<28 mm seed tuber with
the harvesting time of 90 DAP which was economically adventitious.
-1
-1
-1
Description:
A Thesis
Submitted to the Faculty of Agriculture
Sher-e-Bangla Agricultural University, Dhaka
in partial fulfilment of the requirements
for the degree
of
MASTER OF SCIENCE (MS)
IN
AGRONOMY
SEMESTER: JANUARY-JUNE, 2012
