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Optimizing Oat Yield, Quality and Standability in Central Alberta
Prairie Oat Growers Association17th Annual Conference
Banff, Alberta ‐‐ December 4, 2014
Sheri Strydhorst, PhD, Research Scientist, Alberta Agriculture & Rural Development
Joseph Aidoo, MSc Student, University of Alberta; Linda Hall, Professor, University of Alberta
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The Oat Market
There are three main markets for oats:1. Pony oats market2. Milling oats market (human consumption)3. Feed oats market
.
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Oat production in Alberta
• 5 year average Alberta oat yield is 79 bu/ac– The crop’s estimated yield potential is above 200 bu/ac in cool wet conditions.
• Alberta oats are currently sold into the feed and pony markets. – They are excluded from milling markets due to grain quality
concerns
• Alberta’s climate is suitable for milling oat production; however current agronomic practices and varietal choices have not produced quality required for millers.
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2013 AFSC AvgYield (bu/ac)
2013 AFSC Insured Acres % of Acres
AC Morgan 105 102507 58%Derby 94 21198 12%
AC Mustang 84 19344 11%CDC Baler 75 7804 4%Waldern 68 6296 4%Calibre 67 3480 2%CDC S0‐I 97 2809 2%Triactor 109 2054 1%Grizzly 82 1389 1%Cascade 57 1132 1%7600M 74 692 0%Murphy 81 454 0%Jordan 112 472 0%
AC Juniper 68 387 0%Foothill 69 283 0%Total 96 175327 100%
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β-glucans in oat
• Beta‐glucans are a soluble fiber found in the cell wall
• Oat and oat by products have been helpful in the treatment of diabetes and cardiovascular disorders (Butt et al., 2008)
• Generally no premium for high Beta‐glucan, but Quaker will pay a premium for CDC Morrison
http://ceapro.com/wp‐content/uploads/2012/09/Beta‐glucan‐corrected‐Structure.jpg
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Oat varietiesVariety
β glucan(% dry weight)
Yield(bu/ac)
Height(cm)
Test weight(lb/bu)
Resistance to lodging†
Maturity rating‡
Morgan 4.0 – 5.0 111+ 92 40 VG M
0T 3066 4.0 – 5.0 108 108 42 F E
Stride 5.5 – 6.0 104 104 42 G M
Sea Biscuit 5.5 – 6.0 111+ 101 39 G M
CDC Morrison
6.0 ‐ 6.5 100 93 41 VG E
† Lodging Resistance/Tolerance Ratings: VG = Very Good; G = Good; F = Fair; P = Poor; VP = Very Poor. ‡ Maturi es: VE = Very Early; E = Early; M = Medium; L = Late and VL = Very Late.
www.seed.ab.ca
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Study Objectives
• Increase the milling quality of Alberta grown oats and the profitability of growers
• Increase awareness of varieties choices and quality parameters
• Share oat agronomic tips with growers
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Agronomic Treatments
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Nitrogen Fertilizer• Increasing nitrogen fertilizer:
– increases yield– Thousand kernel weight – β‐glucan content (Fan et.al,2009)
• But causes:– Lodging – Decreases test weight
• Low nitrogen fertilizer rates may reducing lodging and yield
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Plant Growth Regulators (PGRs)
• In western Canada, Manipulator was recently registered (for wheat) and a 2nd PGR is in the process of registration (for wheat).
• These PGRs produce shorter (2-15cm), thicker & stronger stems which reduce lodging in intensive management systems (Syngenta, 2013; Taminco, 2013).
• The primary use of PGRs is as a harvest management aid.
Syngenta. 2013. Palisade2EC Label. Accessed November 27, 2013. Available online at:http://www.syngentacropprotection.com/Labels/p-1197/Palisade_2ECTaminco. 2013. Manipulator Technical Data Sheet. Accessed November 27, 2013. Availableonline at: http://www.taminco.com/
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Do all species respond to PGRs the same?
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Ontario study with CCC (Manipulator) found…
• Wheat was the most responsive
• Barley intermediate response
• Oats were the least responsive
Clark and Fedak, 1977. Effects of chlormequat on plant height, disease development and chemical constituents of cultivars of barley, oats and wheat. CJPS 57:31-36.
29.8%
11.6%
8.8%
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Site Descriptions
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Project set-up
Research sites: • St. Albert, AB• Barrhead, AB • Indian head, SK
Years of research: • 2014• 2015• 2016
9 site years of data
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Soil test results for field sites
Sample Depth
Organicmatter
Nitrogenppm
Phosphorusppm
Potassiumppm
pH Sulphur
0‐6 in 9.6 17 20 124 6.4 149
6‐12 in 6.6 7 11 50 6.9 26
Sample Depth
OrganicMatter
Nitrogenppm
Phosphorusppm
Potassiumppm
pH Sulphur
0‐6 in 12.6 80 39 180 5.9 13
6‐12 in n/a 67 n/a n/a n/a 13
Barrhead
St. Albert
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Fertilizer rates, seeding and harvest dates
Barrhead St. Albert
Phosphorous 11 lbs P2O5/acre 23 lbs P205/acre
Potassium 8 lbs K2O/acre 0 lbs K2O/acre
Seeding date May 13, 2014 May 14, 2014
Harvest date September 5, 2014 September 5, 2014
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Precipitation ‐ 2014Barrhead St Albert Indian Head
mm inches mm inches mm inches
May 44 1.7 56 2.2 43 1.4
June 61 2.4 61 2.4 58 7.8
July 80 3.1 113 4.4 55 0.3
August 28 1.1 21 0.8 28 5.5
Sept 5 0.2 18 0.7 17 0.6
Total 218 8.6’’ 266 10.5’’ 201 8.0’’
LTA 282 11.1” 269 10.6’’ 246 9.6’’Soil Moisture @ Seeding (0‐6”) 34% Good Good Seeding Date† May 13, 2014 May 14, 2014 May 14, 2014
Harvest Date Sept 5, 2014 Sept 5, 2014 Sept 9, 2014
Yield 193 bu/ac 221 bu/ac n/a
http://agriculture.alberta.ca/acis/alberta‐weather‐data
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Growing Degree Days ‐ 2014Barrhead St Albert Indian Head
May 141 187 n/a
June 272 294 n/a
July 411 369 n/a
August 363 337 n/a
September 31 33 n/a
Total 1218 1220 n/a
Long Term Average 1090 1176 n/a
Seeding Date May 13, 2014 May 14, 2014 May 14,2014
Harvest Date Sept 5, 2014 Sept 5, 2014 Sept 9, 2014
s2
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Slide 18
s2 Joseph, could you please complete this?sheri.strydhorst, 21/11/2014
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Experiment 1:Variety x N Fertilizer rate
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Experiment 1: Objectives
Determine the influence of oat variety and nitrogen fertilizer rate on yield, lodging and beta glucan content.
• 2 factor Randomized Complete Block Design• 4 replicates
– Varieties: AC Morgan, 0T 3066, Sea Biscuit, Stride, CDC Morrison.– N fertilizer rates: 5, 50, 100, 150 kg ha‐1
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Experiment 1: St. Albert‐ Height response
86 94
106112
0
20
40
60
80
100
120
140
5 50 100 150
plan
t height a
t maturity
(cm)
Nitrogen fertilizer rate (kg ha ‐1)
Morgan
Morrison
OT3066
Sea Biscuit
Stride
Varieties
All varieties got taller as N fertilizer rate increased
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Experiment 1: Barrhead‐ Height response
85
96106
113
0.0
20.0
40.0
60.0
80.0
100.0
120.0
140.0
5 50 100 150
plan
t height at m
aturity
(cm)
Nitrogen rate (kg ha‐1)
Morgan
Morrison
OT3066
Sea Biscuit
Stride
Varieties
All varieties got taller as N fertilizer rate increased
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Experiment 1: Lodging rating @ Maturity
Lodging rated on a 1‐5 scale: 1 is upright, 2 is leaning 5‐300 , 3 is leaning 30‐600 , 4 is leaning at angle of +600 and 5 is plant is flat on the ground.
Nitrogen Rate
(kg ha ‐1)Morgan 0T 3066 Stride Sea Biscuit
CDCMorrison
Barrhead5 1 1 1 1 150 1 1 1 1 1100 1 1 1 1 1150 1 1.25 1.5 1 1
St Albert5 1 1 1 1 150 1 1.3 1.3 1.3 1100 1.2 1.2 1.7 1.7 1.2150 1.5 1.2 2.7 2.2 1.5
• More lodging at St Albert vs Barrhead• Higher N rates increased lodging• Stride lodged more than varieties
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Experiment 1: Barrhead‐ Yield response
194212
238 232
136
164178 184
0
50
100
150
200
250
300
5 50 100 150
yield (b
u/ac adjusted to 13.5%
moisture)
Nitrogen rate (kg ha‐1)
Morgan
OT3066
Stride
Sea Biscuit
Morrison
Varieties
Morgan was the best yielding variety; CDC Morrison the lowest
29% yield decrease
23% yield increase
s19
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Slide 24
s19 Was the yeild data adjusted to a constant mositure content. If so which mositure content and please note it in the units on the y axissheri.strydhorst, 21/11/2014
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Experiment 1: St. Albert‐ Yield response
207
270252
269
189184
226
249
0
50
100
150
200
250
300
5 50 100 150
yield (bu/ac adjusted to 13.5%
moisture)
Nitrogen rate (kg ha ‐1 )
Morgan
Morrison
OT3066
Sea Biscuit
Stride
Varieties
47% yield decrease
30% yield increase
Morgan was the best yielding variety; Stride the lowest
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Experiment 1: Barrhead ‐ % Yield increase
Nitrogen Rate
(kg ha ‐1)Morgan 0T 3066 Stride
Sea Biscuit
Morrison Average
% Yield increase over 5 kg N/ha treatment50 9 8 13 21 21 14100 23 24 22 23 31 25150 20 23 26 22 35 25
• 100 kg N/ha seems to give the highest yields for Morgan, OT 3066 and Sea Biscuit
• 150 kg N/ha seems to give the highest yields for Stride and Morrison
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Experiment 1: St Albert ‐ % Yield increase
Nitrogen Rate
(kg ha ‐1)Morgan 0T 3066 Stride
Sea Biscuit
Morrison Average
% Yield increase over 5 kg N/ha treatment50 30 17 40 ‐2 ‐2 17100 22 26 37 14 20 24150 30 20 31 15 32 26
• 50 kg N/ha seems to produce the highest yields for Morgan and Stride
• 100 kg N/ha seems to give the highest yields for OT 3066 and Sea Biscuit
• 150 kg N/ha seems to give the highest yields for Morrison
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Trends• As N fertilizer rates increased:
– plant height increased– Some varieties (especially Stride) showed more lodging
• Varieties differed in their response to N fertilizer:– CDC Morrison tended to have the highest N requirements to maximize yield
– Morgan yields were maximized with 50 or 100 kg N/ha (depending on location)
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Experiment 2:PGR x N Fertilizer rate
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Experiment 2: Objectives
Determine the influence of plant growth regulator application on stride oat to improve harvestability
• 2 factor Randomized Complete Block Design• 4 replicates
– PGR rates: 0, 70, 100, 130 gai ha‐1– N fertilizer rates: 5, 50, 100, 150 kg ha‐1– Oat variety: Stride (Tall variety which showed lodging tendencies at
high N rates)
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Experiment 2: St. Albert ‐ Height response @ Maturity
103
111 114 115
94102
107102
0
20
40
60
80
100
120
140
5 50 100 150
plan
t height a
t maturity
(cm)
Nitrogen rate (kg ha‐1)
0 gai/ha
70 gai/ha
100 gai/ha
130 gai/ha
PGR rate
Height increased as N fertilizer rate increasedThe PGR reduced plant height by 7‐13 cm
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Experiment 2: Barrhead‐ Height response@ maturity
102
113 114 113
96
107 112 109
0
20
40
60
80
100
120
140
5 50 100 150
plan
t height a
t maturity
(cm)
Nitrogen Rate (kg ha‐1)
0 gai/ha
70 gai/ha
100 gai/ha
130 gai/ha
PGR rates
Height increased as N fertilizer rate increased from 5 to 50 kg N/haThe PGR reduced plant height by 4‐6 cm
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Experiment 2: Lodging rating @ Maturity
Lodging rated on a 1‐5 scale: 1 is upright, 2 is leaning 5‐300 , 3 is leaning 30‐600 , 4 is leaning at angle of +600 and 5 is plant is flat on the ground.
Nitrogen Rate
(kg ha ‐1)
0 gai ha‐1 70 gai ha‐1 100 gai ha‐1 130 gai ha‐1
Barrhead5 1 1 1 1
50 1 1 1 1
100 1.25 1 1 1
150 1.5 1.5 2 1
St Albert5 1 1 1 1
50 1 1 1 1
100 1 1 1 1
150 1 1 1 1
• Minimal lodging at both sites• Higher N rates slightly increased lodging• Statistics need to be run to determine if the PGR reduced lodging
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Experiment 2: Barrhead‐ Yield response
134
176189 199
133158
202185
0
50
100
150
200
250
5 50 100 150
yield (b
u/ac adjusted to 13.5%
moisture)
Nitrogen rate (kg ha‐1)
0 gai/ha
70 gai/ha
100 gai/ha
130 gai/ha
PGR rate rates
8% yield decrease
There were some yield decreases with PGR use, statistics must be run to see if the decreases are significant
11% yield decrease
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Experiment 2: St. Albert‐ Yield response
104
150
176 186
103
143
165187
0
50
100
150
200
250
5 50 100 150
yield (bu/ac adjusted to 13.5%
moisture)
Nitrogen rate (kg ha‐1)
0 gai/ha
70 gai/ha
100 gai/ha
130 gai/ha
PGR rate
7% yield decrease
There were some yield decreases with PGR use, statistics must be run to see if the decreases are significant
5% yield decrease
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Why did PGR cause yield decreases?• Is it the correct timing for Alberta conditions?• Cultivar dependent responses?• Environmental stress?• PGR is interacting with other plant hormones?
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What are PGRs?• Plant Growth Regulators
• Synthetic compounds that impact hormonal activity to beneficially modify plant growth and development
• Effective at low concentrations & break-down rapidly
• Many economically important PGRs work by reducing cell elongation and lowering the rate of cell division http://chartdiagram.com/tag/plant-cell-diagram/
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2 Main PGR Groups: Ethylene releasing compounds
i.e. Ethephon (also blocks auxin transport)
Inhibitors of GA biosynthesis i.e. Chlormequat-Chloride & Trinexapac-Ethyl