Exotic Potato Variety Trial Yala 2019
P.D. Abeytilakarathna, C. Ranasinghe, H.A.S.N. Hettiarachchi,
D.C.W.S.B. Wicramarathna,
P.D.K.S.
Premarathna, B.K. Amarasekara, H.K.B.M.I. Karunarathna and K.D. Kumar
Agricultural Research Station, Seetha Eliya,
Nuwara Eliya, 22200, Sri Lanka.
Exotic potato variety trials were
conducted at the Agricultural Research Station, Seetha Eliya, during yala
season of 2019.
Eight potato varieties were evaluated
which were submitted by the following companies (Table 1).
Table 1. Exotic potato varieties and the
name of the seed companies
Potato Variety
|
Seed Company
|
Granola
|
Standard
|
YP-11-168
|
Hayleys Agro farms
(Pvt) Limited
|
YP-10-182
|
Hayleys Agro farms
(Pvt) Limited
|
Julinka
|
Texton Private
Limited
|
Kelly
|
Hayleys Agro farms
(Pvt) Limited
|
Otolia
|
Texton Private
Limited
|
Belini
|
Oasis Agro Seeds
(Private) Limited
|
Universa
|
Hayleys Agro farms
(Pvt) Limited
|
Alaska
|
Hayleys Agro farms
(Pvt) Limited
|
Materials and Methods
Thirteen exotic potato varieties were
evaluated at the Agricultural Research Station, Seetha Eliya during yala seson
of 2019 (Table 2.) Statistical design was RCBD with three replicates. Agronomic
practices and pest and disease control measures were carried out according to
the recommendation of the Department of Agriculture. Yield and other agronomic
data were measured. Data were analysed using R software.
Results
Total
yield of the potatoes were not significantly different with the check variety Granola
(Table 1). The greater amount of small tubers were found in the Granola variety
(25. t/ha) followed by Julinka and YP-10-182 (18. t/ha and 1.6 t/ha
respectively. The lowest amount of small tubers was observed in the YP-10-182
variety (0.6 t/ha). Medium size tubers were grater in YP-11-168 followed by
YP-10-182, Julinka, Granola and Kelly. Yields of the large size tuber were not
significantly different with the standard variety Granola.
Table 1. Total
yield, weight of small tubers, medium size tubers and large size tubers of the
exotic potatoes evaluated at the Agricultural Research Station, Sita Eliya in Yala
2019.
Entry Name
|
Total
yield (t/ha)
|
Small tuber wgt. (< 28 mm) (t/ha)
|
Medium size tuber wgt. (28-55 mm ) (t/ha)
|
Large
tuber wgt. (>55 mm) (t/ha)
|
Foliage late blight
|
YP-11-168
|
77.2
|
1.6 abc
|
43.3 a
|
32.3
|
Moderately
resistant
|
YP-10-182
|
67.9
|
0.6 c
|
38.0 ab
|
29.3
|
Moderately
resistant
|
Julinka
|
67.4
|
1.8 ab
|
37.0 ab
|
29.3
|
Highly susceptible
|
Granola
|
66.4
|
2.5 a
|
36.4 ab
|
27.3
|
Moderately
resistant
|
Kelly
|
64.4
|
1.1 bc
|
35.3 ab
|
28.0
|
Moderately
resistant
|
Otalia
|
62.5
|
1.4 bc
|
34.5 b
|
26.6
|
Moderately
resistant
|
Bellini
|
61.4
|
1.1 bc
|
33.9 b
|
26.4
|
Moderately
resistant
|
Universa
|
42.1
|
0.9 bc
|
20.2 c
|
20.9
|
Highly susceptible
|
Alaska
|
37.7
|
0.8 bc
|
20.4 c
|
16.5
|
Highly susceptible
|
Significance
|
n.s.
|
*
|
**
|
n.s.
|
|
CV %
|
27.0
|
40.7
|
13.0
|
49.2
|
n.s., *, ** Not
significant, significant at p≤0.05
and p≤0.01 respectively
Same letters are not
significantly different at DNMRT p ≤0.05
