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In season texture analysis of sugar beets using a handheld penetrometer

Authors:

Abstract

CONCLUSIONS • The correspondence between the handheld and the laboratory penetrometers was high • The magnitude of values from the handheld penetrometer were most similar to Puncture resistance • The rank order of pressures recorded in season with the handheld penetrometer was stable over time
CONCLUSIONS
The correspondence between the handheld and the laboratory penetrometers was high
The magnitude of values from the handheld penetrometer were most similar to Puncture resistance
The rank order of pressures recorded in season with the handheld penetrometer was stable over time
NBR Nordic Beet Research foundation,
Borgeby Slottsväg 11, SE-237 91 Bjärred
E-mail: we@nbrf.nu
HOW
Countries:Field NL (IRS), BE (IRBAB), SE (NBR)
Lab – DE (IfZ)
Varieties: 3 varieties, with different yield formation
Equipment: Field – FT011 Handheld penetrometer
Lab TA.XTPlus100
Needle – 2mm, flat tip
Timing: Field – 2, 1 & 0 months pre-harvest 2019
Lab at harvest 2019
INSEASON TEXTURE ANALYSIS USING A HANDHELD PENETROMETER
WILLIAM ENGLISH1, JOAKIM EKELÖF1, MARTIJN LEIJDEKKERS2, FRANÇOISE VANCUTSEM3, GUNNAR KLEUKER4, CHRISTA HOFFMANN4
1NBR Nordic Beet Research foundation, 2Institute of Sugar Beet Research (IRS), 3IRBAB-KBIVB, 4Institute of Sugar Beet Research (IfZ)
Puncture resistance: Laboratory
Pressure at puncture of periderm.Site average.
180 test points per site and variety.
ACOBRI COLLABORATION PROJECT
LABORATORY HANDHELD
VERY HIGH
ACCURACY
ACCEPTABLE
ACCURACY
MULTIPLE METRICS SINGLE METRIC
HIGH COST €300
POST-HARVEST PRE-& POST-
HARVEST
Ø 2MM FLAT TIP Ø 2MM FLAT TIP
OBJECTIVE
Assess the accuracy and reliability of ahandheld
penetrometer when applied in season and to sugar
beet varieties with different yield formation, in
comparison to a high-end laboratory penetrometer.
Tissue firmness:Laboratory
Average pressure 1 - 5mm.Site average.
180 test points per site and variety
Resistance: Handheld in season (NBR ONLY*)
Maximum pressure 0 – 5mm.Site average.
180 test points per site and variety
RESULTS
Find out more and see the results from this COBRI project
Wednesday 12 February.Session 7. 2.40 pm
Gunnar Kleuker (IfZ): Impact factors on the tissue strength,
damage susceptibility and storability of sugar beets
3
3,5
4
4,5
5
5,5
6
6,5
7
7,5
August September October
Pressure (MPa)
Variety 1
Variety 2
Variety 3
3
3,5
4
4,5
5
5,5
6
6,5
7
7,5
IRS IRBAB NBR
Pressure (MPa)
Variety 1
Variety 2
Variety 3
3
3,5
4
4,5
5
5,5
6
6,5
7
7,5
IRS IRBAB NBR
Pressure (MPa)
Variety 1
Variety 2
Variety 3
*For the full results, including the handheld penetrometer
data from the Netherlands and Belgium, and acomparison of
different operators, please look out for our publication
(expected late 2020).
CORRELATIONS (
r
). Plot average.
N
= 54.NBR ONLY.
Puncture Resistance Tissue Firmness
Handheld Oct. 0.77 (p < 0.001) 0.82 (p < 0.001)
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