Ginning: a way of measuring
its specific impact on fiber quality
Jean-Paul Gourlot*, Mamadou Togola**, Eric Gozé*, Bruno Bachelier*,
Massa Coulibaly***, and Abdoul Karim Traoré****
CIRAD (France), ** CERFITEX (Mali), ***University of Bamako (Mali), ****IER (Mali)
Seed-cotton collection => bales
2
Grower 2
Grower A
Grower B
Grower X
Grower I
Grower II
Grower n
Grower 1
Productivity & Quality depend on
Production conditions (variety, sowing date, crop management, crop protection, pests, diseases,
weeds, soil, climate…)
Seed-cotton collection => bales
3
Grower 2
Grower A
Grower B
Grower X
Grower I
Grower II
Community seed
cotton market
Community seed cotton market
Community seed cotton market
Africatime.comGrower n
Grower 1
Africatime.comProductivity & Quality depend on
Production conditions + market organization…
Africatime.comSeed-cotton collection => bales
4
Grower 2
Grower A
Grower B
Grower X
Grower I
Grower II
Community seed
cotton market
Community seed cotton market
Community seed cotton market
Africatime.comGrower n
Grower 1
Africatime.comProductivity & Quality depend on
Production conditions + market organization + ginning conditions…
Africatime.comIntroduction
Objectives
M & Ms
Results
Conclusion Perspectives
Source : www.intracen.org Alimentation tapis-module Cleaner Séchage Dryer Cleaner Cleaner Bale press Fibres Module feeder or telescope
Seed-cotton collection => bales
5
Grower 2
Grower A
Grower B
Grower X
Grower I
Grower II
Community seed
cotton market
Community seed cotton market
Community seed cotton market
Africatime.comGrower n
Grower 1
Africatime.comProductivity & Quality depend on
Production conditions + market organization + ginning conditions + characterization conditions
Africatime.comIntroduction
Objectives
M & Ms
Results
Conclusion Perspectives
Source : www.intracen.org Alimentation tapis-module Cleaner Séchage Dryer Cleaner Cleaner Bale press Fibres Module feeder or telescope
Seed‐cotton
production
and
marketing
Ginning
Fiber quality
characterization
Bale lots made up according to fiber quality
to satisfy a specific requirement of buyers in
the textile processing industry
FIBRE
‘quality’
Fiber quality: multi-scale interaction
6
Anthony, W. S. (1977). Cotton ginners handbook (1977th ed.). Agricultural Research Service.Anthony, W. S. (1990). A good bale of cotton: interaction of variety, harvesting and ginning. The Cotton and Oil Mill Press Columbus, E. P. et al. (1990). Maintaining cotton quality. Paper American Society of Agricultural Engineers, 1057–1065. Curley, R. G. et al. (1973). Seed-cotton. California Agriculture.
Drieling, A. et al. (2012). Guideline for Standardized Instrument Testing of Cotton. www.csitc.org Elsiddig, A. et al. (2003). Genotype-Environment Interaction. J. Agric. Sci., 12(1), 19–34.
Gérardeaux, E. et al. (2013). Positive effect of climate change on cotton in 2050 by CO2 enrichment and conservation agriculture in Cameroon. ASD, 33(3), 485–495. Pettigrew, W. T. (2008). The Effect of Higher Temperatures on Cotton Lint Yield Production and Fiber Quality. Crop Science, 48(1), 278.
Bale lots made up according to fiber quality
to satisfy a specific requirement of buyers in
the textile processing industry
Seed‐cotton
production
and
marketing
Ginning
Fiber quality
characterization
FIBRE
‘quality’
Fiber quality: multi-scale interaction
7
Characterization:
‐ Provides an overall view
‐ Results of an interaction
How to measure the specific impact of
one source of variability on fiber quality?
: D
: E
+
: G
x
: I
Ginning mills:
Classing characterization results
8
Rd (%)
+b ()
UHML (mm)
UI (%)
Introduction
Objectives
M & Ms
Results
Conclusion Perspectives
Ginning process: how to measure its specific
impact on fiber quality?
Management and scientific issues:
• How to trace the ginning process from fiber
characterization results (collected on fiber samples)?
• How varies the ginning impact over time?
• What is the impact of each ginning step in the process?
• How to limit negative ginning impacts at acceptable
levels?
9
Material and methods: Ginning main sequences
10
Source : www.intracen.orgAlimentation
tapis-module
Cleaner
Séchage
Dryer
Cleaner
Cleaner
Bale press
Fibres
Module feeder or telescope
Gin stand
Lint cleaning
Seed-cotton
cleaners
Lint cleaner 1
Gin stand 1
Lint cleaner 2
Gin stand 2
Lint cleaner n
Gin stand n
Seed-cotton (SC)
truck/module
Material flow
Bales
Industrial ginning mills A to M, on various given dates
Samples at each of
n consecutives bales
for each date
Characterization
in two
randomized blocks
(including controls)
F
out
Material flow
Seed-cotton
cleaners
Lint cleaner 1
Gin stand 1
Lint cleaner 2
Gin stand 2
Lint cleaner n
Gin stand n
Seed-cotton (SC)
truck/module
Bales
homogenization micro-ginning
Micro-gin R
Seed-cotton
fed by handfuls
F
out
(SC
in
)
Micro-ginning in randomized order
(include controls
b)
Material and methods: Experiment 1
a
11
SC
in
a Togola M. et al. (2017). Feasibility study: A new way to check the stability of industrial ginning along the season, TRJ bTogola M. et al. (2016), Is it possible to check micro ginning fiber quality preservation performance using reference
seed-cotton materials?, WCRC6
Industrial ginning mills A to M, on various given dates
Samples at each of
n consecutives bales
for each date
Characterization
in two
randomized blocks
(including controls)
F
out
Material flow
Seed-cotton
cleaners
Lint cleaner 1
Gin stand 1
Lint cleaner 2
Gin stand 2
Lint cleaner n
Gin stand n
Seed-cotton (SC)
truck/module
Bales
homogenization micro-ginning
Micro-gin R
Seed-cotton
fed by handfuls
F
out
(SC
in
)
Micro-ginning in randomized order
(include controls
b)
Material and methods: Experiment 1
a
12
SC
in
a Togola M. et al. (2017). Feasibility study: A new way to check the stability of industrial ginning along the season, TRJ bTogola M. et al. (2016), Is it possible to check micro ginning fiber quality preservation performance using reference
seed-cotton materials?, WCRC6
Introduction
Objectives
M & Ms
Results
Conclusion Perspectives
Δ
Length, color and trash
parameters measured by SITC
Solid line = F
out
Dashed line= F
out
(SC
in
)
Results: Experiment 1
13
Togola M. et al. (2017). Feasibility study: A new way to check the stability of industrial ginning along the season, TRJIntroduction
Objectives
M & Ms
Results
Conclusion Perspectives
Industrial ginning mill G
Results: Experiment 1
Δ = F
out
(SC
in
) – F
out
in Rd (%)
14
Togola M. et al. (2017). Feasibility study: A new way to check the stability of industrial ginning along the season, TRJIntroduction
Objectives
M & Ms
Results
Conclusion Perspectives
0
Results: Experiment 1
Global impact demonstrated.
Coming from which ginning stage:
SC cleaning? Ginning? Lint‐cleaning?
15
Δ = F
out
(SC
in
) – F
out
in Rd (%)
Togola M. et al. (2017). Feasibility study: A new way to check the stability of industrial ginning along the season, TRJ
Industrial ginning mills D, E, G, I on various given dates
Samples at each of
n consecutives bales
for each date
Characterization
in two
randomized blocks
(including controls)
F
in
SC
out
Seed-cotton
cleaners
Lint cleaner 1
Gin stand 1
Lint cleaner 2
Gin stand 2
Lint cleaner n
Gin stand n
Seed-cotton (SC)
truck/module
Material flow
Bales
homogenization micro-ginning
Micro-gin R
Seed-cotton
fed by handfuls
F
out
(Sc
in
)
F
out
(Sc
out
)
Micro-ginning in randomized order
(include controls)
F
out
Material and methods: Experiment 2
16
SC
in
Togola M. et al. (2017). PhD and paper under preparation for TRJ
F
in
SC
out
Seed-cotton
cleaners
Lint cleaner 1
Gin stand 1
Lint cleaner 2
Gin stand 2
Lint cleaner n
Gin stand n
Seed-cotton (SC)
truck/module
Material flow
Bales
F
out
Material and methods: calculations of quality ∆s
17
SC
in
Δ
1
Δ
2
(Δ
3
)
(Δ
5
= Δ
2
+ Δ
3
)
Δ
4
= Δ
1
+ Δ
2
(Δ
6
= Δ
1
+ Δ
2
+ Δ
3
) = Δ of Experiment 1
Introduction
Objectives
M & Ms
Results
Conclusion Perspectives
Delt
a
Rd%
Industrial ginning mill D
1 2 4 1 2 4 1 2 4 1 2 4 1 2 4 1 2 4 1 2 4
Delta
0
Results: Experiment 2
18
Delta1: SC
out– SC
inDelta2: F
in– SC
outDelta4: F
in– SC
inIndustrial ginning mill E
Delta1: SC
out– SC
inDelta2: F
in– SC
outDelta3: F
out– F
inDelta6: F
out‐ SC
in1 2 3 6 1 2 3 6 1 2 3 6 1 2 3 6 1 2 3 6 1 2 3 6 1 2 3 6 1 2 3 6 1 2 3 6 1 2 3 6 1 2 3 6 1 2 3 6 1 2 3 6
