Spudman July/August 2022 - 23

100
80
60
40
20
a
6.0
5.0
4.0
3.0
2.0
1.0
0.0
b
fgh
e
bcd bcd
b
a
Bud
Harvest
1
2
3
4
5
Evaluation Month
Figure 1. Tubers impacted at harvest (55°F) and development evaluated
throughout storage: Effect of tuber end and evaluation month for
bruise development a) blackspot bruise incidence and b) blackspot
bruise depth. Results are means of two years and combined between
cultivars. Values followed by the same letter are not significantly
different (α<0.05) for each graph.
months in storage), a sub-sample
was removed from storage (45°F) and
evaluated for bruise development.
Blackspot bruise incidence, severity
and depth increased within the first
month after harvest, but after the first
month, blackspot bruises remained at
similar levels for the remainder of time
in storage. This was observed for both
Russet Burbank and Russet Norkotah.
Interestingly, the pattern of increase in
bruise in the first month of storage was
not the same on both ends of the tuber
(Figure 1). When bruises were sustained
at harvest on the stem end, they did not
change in incidence or depth throughout
storage. The bud end, however, had a
significant increase in blackspot bruise
incidence and depth within the first
month of storage. Impacts at harvest
resulting in shatter bruise did not
develop further in storage. Therefore,
sub-sampling to determine how much
shatter bruise occurred on a commercial
operation could be done at harvest.
The objective of the second study
was to determine if the risk of bruising
potatoes when removed from storage
changes with time in storage. For this
study, a sub-sample of Russet Burbank and
Russet Norkotah potatoes (75 potatoes
per cultivar) was impacted at harvest
(45°F), then evaluated 24 hours later. The
remaining sample of non-bruised potatoes
were cured in the same manner as the first
trial. Each subsequent month, a sample
was removed from storage, impacted at
45°F, held at room temperature (70°F),
and evaluated 24 hours later.
The risk of bruise development
associated with handling tubers after
unloading from storage was consistent,
regardless of the time removed from
storage. For blackspot bruise, there was
a minor increase from harvest to the
eighth month in storage; although, this
Spudman * July/August 2022
23
6
7
Stem
8
bc
cd
bcd
d
d
fgh
e
e
e
e
e
e
e
e
e
d
bc
b
a
Bud
Stem
c
bc
c
c
cd
Harvest
1
2
3
4
5
Evaluation Month
i
ghi
ef
hi
hi
efg
6
7
8
Blackspot bruise depth (mm)
Blackspot bruise incidence (%)

http://biosafesystems.com

Spudman July/August 2022

Table of Contents for the Digital Edition of Spudman July/August 2022

Spudman July/August 2022 - 1
Spudman July/August 2022 - 2
Spudman July/August 2022 - 3
Spudman July/August 2022 - 4
Spudman July/August 2022 - 5
Spudman July/August 2022 - 6
Spudman July/August 2022 - 7
Spudman July/August 2022 - 8
Spudman July/August 2022 - 9
Spudman July/August 2022 - 10
Spudman July/August 2022 - 11
Spudman July/August 2022 - 12
Spudman July/August 2022 - 13
Spudman July/August 2022 - 14
Spudman July/August 2022 - 15
Spudman July/August 2022 - 16
Spudman July/August 2022 - 17
Spudman July/August 2022 - 18
Spudman July/August 2022 - 19
Spudman July/August 2022 - 20
Spudman July/August 2022 - 21
Spudman July/August 2022 - 22
Spudman July/August 2022 - 23
Spudman July/August 2022 - 24
Spudman July/August 2022 - 25
Spudman July/August 2022 - 26
Spudman July/August 2022 - 27
Spudman July/August 2022 - 28
Spudman July/August 2022 - 29
Spudman July/August 2022 - 30
Spudman July/August 2022 - 31
Spudman July/August 2022 - 32
https://www.nxtbook.com/greatamericanmediaservices/SPUD/april-2024
https://www.nxtbook.com/greatamericanmediaservices/SPUD/march-2024
https://www.nxtbook.com/greatamericanmediaservices/SPUD/february-2024
https://www.nxtbook.com/greatamericanmediaservices/SPUD/spudman-january-2024
https://www.nxtbook.com/greatamericanmediaservices/SPUD/spudman-november-december-2023
https://www.nxtbook.com/greatamericanmediaservices/SPUD/spudman-september-october-2023
https://www.nxtbook.com/greatamericanmediaservices/SPUD/spudman-july-august-2023
https://www.nxtbook.com/greatamericanmediaservices/SPUD/spudman-may-june-2023
https://www.nxtbook.com/greatamericanmediaservices/SPUD/spudman-april-2023
https://www.nxtbook.com/greatamericanmediaservices/SPUD/spudman-march-2023
https://www.nxtbook.com/greatamericanmediaservices/SPUD/spudman-february-2023
https://www.nxtbook.com/greatamericanmediaservices/SPUD/spudman-january-2023
https://www.nxtbook.com/greatamericanmediaservices/SPUD/spudman-november-december-2022
https://www.nxtbook.com/greatamericanmediaservices/SPUD/spudman-september-october-2022
https://www.nxtbook.com/greatamericanmediaservices/SPUD/spudman-july-august-2022
https://www.nxtbook.com/greatamericanmediaservices/SPUD/may-june-2022
https://www.nxtbook.com/greatamericanmediaservices/SPUD/april-2022
https://www.nxtbook.com/greatamericanmediaservices/SPUD/march-2022
https://www.nxtbook.com/greatamericanmediaservices/SPUD/february-2022
https://www.nxtbook.com/greatamericanmediaservices/SPUD/january-2022
https://www.nxtbook.com/greatamericanmediaservices/SPUD/november-december-2021
https://www.nxtbook.com/greatamericanmediaservices/SPUD/september-october-2021
https://www.nxtbook.com/greatamericanmediaservices/SPUD/july-august-2021
https://www.nxtbook.com/greatamericanmediaservices/SPUD/may-june-2021
https://www.nxtbook.com/greatamericanmediaservices/SPUD/april-2021
https://www.nxtbook.com/greatamericanmediaservices/SPUD/march-2021
https://www.nxtbook.com/greatamericanmediaservices/SPUD/february-2021
https://www.nxtbook.com/greatamericanmediaservices/SPUD/january-2021
https://www.nxtbook.com/greatamericanmediaservices/SPUD/november-december-2020
https://www.nxtbook.com/greatamericanmediaservices/SPUD/september-october-2020
https://www.nxtbook.com/greatamericanmediaservices/SPUD/july-august-2020
https://www.nxtbook.com/greatamericanmediaservices/SPUD/may-june-2020
https://www.nxtbook.com/greatamericanmediaservices/SPUD/april-2020
https://www.nxtbook.com/greatamericanmediaservices/SPUD/march-2020
https://www.nxtbook.com/greatamericanmediaservices/SPUD/february-2020
https://www.nxtbook.com/greatamericanmediaservices/SPUD/january-2020
https://www.nxtbook.com/greatamericanmediaservices/SPUD/november-december-2019
https://www.nxtbook.com/greatamericanmediaservices/SPUD/september-october-2019
https://www.nxtbook.com/greatamericanmediaservices/SPUD/july-august-2019
https://www.nxtbook.com/greatamericanmediaservices/SPUD/may-june-2019
https://www.nxtbook.com/greatamericanmediaservices/SPUD/april-2019
https://www.nxtbook.com/greatamericanmediaservices/SPUD/march-2019
https://www.nxtbook.com/greatamericanmediaservices/SPUD/february-2019
https://www.nxtbook.com/greatamericanmediaservices/SPUD/basf-2019
https://www.nxtbook.com/greatamericanmediaservices/SPUD/january-2019
https://www.nxtbookmedia.com