Abstract:
A field experiment was conducted at Sher-e-Bangla Agricultural University, Dhaka
during the period from September-2020 to February-2021, to study the yield and quality
of potato (Solanum tuberosum L.) as influenced by fertilizer and irrigation frequency. The
experiment consisted of two factors, and followed split plot design with three
replications. Factor A. Different fertilizer application frequency (3) viz: F
= Split 2 times
N and K (50 % basal N and K of RDF + 25% N and K each at 30 and 45 DAP), F
= Split
3 times N and K (40 % basal N and K of RDF + 20% N and K each at 30, 45 and 60
DAP) and F
= Split 3 times N and K and 2 times P (40 % basal N, K and P of RDF +
20% N and K each at 30, 45 and 60 DAP +60 % P at 30 DAP ) [ Application of
recommendation dose of fertilizers according to Fertilizer Recommendation Guide (
FRG),2018 ] were placed in the main plot and Factor B. Different irrigation frequency (3)
viz: I
1
3
= Three irrigation (20, 30 and 60 DAP), I
= Four irrigation (20, 30, 45 and 60
DAP) and I
3
2
1
= Five irrigation (20, 30, 45, 60 and 75 DAP) were placed in the sub-plot.
Among different treatment of fertilizer application frequencies, the F
treatment produced
the highest tuber yield (21.89 t ha
-1
), specific gravity (1.084 g cm
-3
3
), starch content (13.90
%), as well as the highest yield of graded A (0.40 %) and B (29.56 %) of potatoes.
Regarding various irrigation frequencies, the highest tuber yield plant
-1
(296.47 g), tuber
yield (22.48 t ha
-1
), starch content (13.90 %), highest dry matter content of tuber
(19.80
%), and highest graded A (0.53%) and B (30.84 %) type of potato yield were all found in
the I
2
treatment. In terms of combination results, the F
3
I
treatment combination showed
the best results, recording the highest tuber yield (23.50 t ha
2
-1
), starch content (13.90 %),
dry matter content tuber
-1
(20.80 %), starch content (14.80 %) and yielding the highest A
(0.72 %) and B (32.13%) graded of potatoes. Therefore, it was indicated that cultivation
of potato through application of recommendation dose of fertilizer through split 3 times:
N, K and 2 times P (F
3
) combined with four irrigation (20, 30,45 and 60 DAP) (I
) would
help to enhanced yield and qualities of potatoes.
Description:
A Thesis Submitted to
The Department of Agronomy, Faculty of Agriculture,
Sher-e-Bangla Agricultural University, Dhaka,
in partial fulfilment of the requirements
for the degree of
MASTERS OF SCIENCE (MS)
IN
AGRONOMY
