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Influence of Harvest Date on Winter Camelina Phenology, Seed Yield, and
Quality Maninder K. Walia1*, M. Scott Wells1, Julija Cubins1, Donald Wyse1, Russ Gesch2, and Frank Forcella2
1University of Minnesota, 3USDA-ARS, Morris, MN
*Presenting and Corresponding author : [email protected]
MATERIALS AND METHODS RESULTS AND DISCUSSION
•No differences were observed in aboveground
biomass at different harvest times at either
locations.
•Maximum seed yield occurred by mid-June in
RSMT (HT 5: June 19) and late-June in Morris (HT
6: June 26) corresponding to seed moisture of
around 48 to 51% (Figures 3, and 4).
•Likewise, maximum seed oil content corresponded
to the same HT as maximum yield at both locations.
•By HT 8 (July 6), seed moisture was 12% at Morris
and HT 7 (July 5), it was 6% at RSMT.
• For winter camelina, seed yield and oil content
were maximized (i.e., physiological maturity) by
about mid-June, corresponding to moisture
contents around 48 to 51%.
• Approximately, an additional two weeks of drying
were required for seeds to reach a moisture content
conducive to machine harvesting and storage.
• Research is planned to evaluate the use of harvest
aids to hasten camelina seed drying and harvest.
INTRODUCTION
• Locations: Rosemount (RMST) and Morris,
Minnesota.
• Soils at Rosemount: well-drained Waukegan silt loam
(fine- silty or sandy-skeletal over sandy, mixed,
superactive, mesic Typic Hapludoll)
• Soils at Morris: Barnes loam soil (fine-loamy, mixed,
superactive, frigid Calcic Hapludoll).
• Winter camelina (cv. Joelle), planted: autumn, 2016
• Eight harvest times (HT) from early June through early
July, 2017: HT 1-8.
• Parameters measured: Aboveground biomass, height,
seed yield (at 8% moisture content), moisture content
at harvest, and oil content (NMR).
0
10
20
30
40
0
500
1000
1500
2000
1 2 3 4 5 6 7 8
Oil
Con
ten
t (%
)
Yie
ld (
kg h
a-1
)
Harvest Time
Yield at Morris Yield at RSMT Oil at Morris Oil at RSMT
Fig. 4: Influence of harvest time on winter camelina seed
yield, and oil content.
CONCLUSIONS
Fig. 3: Influence of harvest time on winter camelina seed
moisture content at harvest
Winter camelina (Camelina sativa [L.] Crantz) has
potential for use as a cash cover crop that provides
both ecosystem services and economic benefits. It
produces a high quality edible oil with high levels
of α-linolenic acid, a heart-healthy omega-3 fatty
acid. Fall seeded winter camelina can be harvested
early enough in following summer to allow
planting a second crop (Gesch and Archer, 2013).
However, research is needed to assess the harvest
timing of winter camelina to allow early planting
of double crops.
OBJECTIVE:
• To determine optimum harvest time of
winter camelina to maximize seed yield and
quality.
Fig. 2: Mean monthly precipitation ,and 30-year average
during the growing season at each location.
REFERENCES Gesch R.W., and Archer, D.W. 2013. Double-cropping with winter camelina in
the northern Corn Belt to produce fuel and food. Industrial Crops and Products
44 : 718-725.
Fig. 1: Winter camelina plants (i and ii), seeds (iii) and
Forever Green – UMN information (iv)
(http://forevergreen-umn.info/17FG-Camelina.pdf)
i ii
iv
0
20
40
60
80
100
120
140
160
180
200
Sep Oct Nov Dec Jan Feb Mar Apr May Jun Jul
Pre
cip
itati
on
(m
m)
Month
RSMT 2016-17 Morris 2016-17
RSMT 30-Yr Avg. Morris 30 Yr-Avg.
iii
0
10
20
30
40
50
60
70
80
1 2 3 4 5 6 7 8
See
d M
ois
ture
at
Harv
est
(%)
Harvest Time
Morris RSMT
iv
