Abstract:
The sweet potato is an alternative energy source but its sustainability depends on
higher yield. A field experiment was conducted at Sher-e-Bangla Agricultural
University farm, Dhaka during the period from October 2019 to April 2020, to
investigate the effects of number of nodes and cutting position on morphophysiological
attributes and yield of sweet potato. The experiment was consisted of
nine treatments, and followed Randomized complete block design (RCBD) with three
replications. Treatments (9) viz, T
0
= 3 nodes from top cut, T
= 3 nodes from middle
cut, T
2
= 3 nodes from basal cut, T
3
= 5 nodes from top cut, T
1
= 5 nodes from middle
cut, T
5
= 5 nodes from basal cut, T
6
= 7 nodes from top cut, T
4
= 7 nodes from middle
cut and T
8
7
= 7 nodes from basal cut. Data on different parameters were collected for
assessing results for this experiment and showed significant variation in respect of
node number and cutting position of vine of sweet potato. Among different treatments
T
(5 nodes from top cut) out performed from all the other treatments and recorded
maximum number of tubers plant
3
-1
(5.15), total weight of tuber plant
(867.00 g),
weight of marketable tuber plant
-1
(802.00 g), total weight of tuber plot
(10 kg),
tubers yield (27.56 t ha
-1
) and dry matter (30.85 %) of tuberous root of sweet potato
comparable to other treatments. The performance of T
0
-1
-1
(3 nodes from top) and T
(7
nodes from top) were also significantly better. Thus for propagating of sweet potato
through vine, 5 node from top cut is suitable for achieving higher yield.
6
Description:
A Thesis
Submitted to the Department of Agricultural Botany,
Sher-e-Bangla Agricultural University, Dhaka,
in partial fulfillment of the requirements for the degree of
MASTER OF SCIENCE
IN
AGRICULTURAL BOTANY
SEMESTER: JANUARY-JUNE, 2021
