Bandara, M.S.

Larney, F.J.

LeRoy, D.

Pauly, D.G.

Thai, T.N.T.

English

University of Saskatchewan Research Archive

Soils and Crops Workshop,  March 6, 2017Thai, T.N.T1,2, Larney, F.J.2, Thomas J.E.1, Bandara M.S.3, Pauly, D.G4 and LeRoy D.51Dept. of Biological Sciences, University of Lethbridge, Lethbridge, AB2Agriculture & Agri-Food Canada, Lethbridge Research Centre, Lethbridge, AB3Alberta Agriculture & Forestry, Crop Diversification Centre South, Brooks, AB4Alberta Agriculture & Forestry, Lethbridge, AB5 Dept. of Economics, University of Lethbridge, Lethbridge, ABGenotype, row spacing and seeding rate effects on irrigated short-season soybean in southern Alberta01002003004005006007002010 2011 2012 2013 2014 2015 20161000 haSoybean seeded areas in Prairie provincesManitoba Sakatchewan AlbertaStatistics, Canada, 2016; Alberta Government, 2016 And Fabian Farms, 2016Alberta: 10000 ha100 3614954047100000200040006000800010000120001941 1976 1981 1991 1996 2001 2006 2011 2014est.2016est.hectareSoybean seeded areas in AlbertaStatistics, Canada, 2016; Alberta Government, 2016 And Fabian Farms, 20162 TIMES INCREASEGrowing Soybean in AlbertaPROS ? CONSPros:✓ Varieties are NOW available for low CHU conditions✓ Potential market ✓ Pulse crop – growing awareness (soil conservation, human health, etc.)Cons:➢ Varieties: requires at least 2200 – 2450 CHU➢ Irrigated land➢ Warm season: Soil temperature >100C to germinate; short-day to flower and frost-free day > 100 days; ❖ No agronomic practices for soybean!!!❖ Soybean yield is still LOW!!!!Objectives of the researchDetermining the optimum:➢ Genotype➢ Seeding density ➢ Row spacing For a higher soybean seed yield in southern Alberta MAP DATA © 2017 GOOGLELocation of the researchLETHBRIDGEBOW ISLANDMaterials and methods 3 seeding densities (30, 50 and 80 seeds m-2) 2 row-spacings(Narrow: 17.5 cm; Wide: 35 cm) 2 RR soybean cultivars ➢ Irrigated land➢ 2 locations (Bow Island and Lethbridge)➢ 2 years (2014, 2015)➢ RCBD design ➢ PROC MIXED analysisSmall plot (1.6 x 7 = 11.2 m2)Grain yield (kg ha-1)Straw yield (kg ha-1)Grain N uptake (kg ha-1)Straw N uptake(kg ha-1)Total N uptake(kg ha-1)Environment 2014_Bow Island 2895 4208 168 28 1962015_Bow Island 2390 4143 149 30 1812014_Lethbridge 2785 4598 166 33 1992015_Lethbridge 2438 5041 142 39 182P-value <.001 0.01 0.005 NS NSEnvironment*Genotype 0.001 NS 0.002 0.01 NSEnvironment*Row spacing <.001 0.03 <.001 0.005 <.001Seeding Density*Genotype*Row spacing NS 0.007 NS NS NSEffect of genotype, row spacing & seeding density on soybean yieldOther interactions which are not mentioned are non-significantNS: Non-significantBE OVERULEDGrain yield (kg ha-1)Straw yield (kg ha-1)Grain N uptake (kg ha-1)Straw N uptake(kg ha-1)Total N uptake(kg ha-1)Genotype Co-op F045R #3 2615 4682 160 37 197 ANSC Tilston 2639 4313 153 28 182 BP-value NS <.001 0.003 <.001 <.001Environment*Genotype 0.001 NS 0.002 0.01 NSEnvironment*Row spacing <.001 0.03 <.001 0.005 <.001Seeding Density*Genotype*Row spacing NS 0.007 NS NS NSEffect of genotype, row spacing & seeding density on soybean yieldOther interactions which are not mentioned are non-significantNS: Non-significantGrain yield (kg ha-1)Straw yield (kg ha-1)Grain N uptake (kg ha-1)Straw N uptake(kg ha-1)Total N uptake(kg ha-1)Row spacing Wide (35 cm) 2610 4541 157 33 190Narrow (17.5 cm) 2644 4455 156 32 189P-value NS NS NS NS NSEnvironment*Genotype 0.001 NS 0.002 0.01 NSEnvironment*Row spacing <.001 0.03 <.001 0.005 <.001Seeding Density*Genotype*Row spacing NS 0.007 NS NS NSEffect of genotype, row spacing & seeding density on soybean yieldBE OVERULEDOther interactions which are not mentioned are non-significantNS: Non-significantGrain yield (kg ha-1)Straw yield (kg ha-1)Grain N uptake (kg ha-1)Straw N uptake(kg ha-1)Total N uptake(kg ha-1)Seeding density 30 seed m-2 2303 C 3922 136 C 28 B 163 C50 seed m-2 2612 B 4415 154 B 30 B 185 B 80 seed m-2 2965 A 5156 179 A 40 A 220 AP-value <.001 <.001 <.001 <.001 <.001Environment*Genotype 0.001 NS 0.002 0.01 NSEnvironment*Row spacing <.001 0.03 <.001 0.005 <.001Seeding Density*Genotype*Row spacing NS 0.007 NS NS NSEffect of genotypes, row spacings & seeding density on soybean yieldOther interactions which are not mentioned are non-significantNS: Non-significantEnvironment x Genotype interactions on grain yield, grain N uptake and straw N uptakeC3: Co-op F045 #3;          N3: NSC TilstonA A A AAB BAA A A B AB AAABAB A BAB0204060801001201401601800500100015002000250030003500C3 N3 C3 N3 C3 N3 C3 N32014_BOW ISLAND 2014_LETHBRIDGE 2015_BOW ISLAND 2015_LETHBRIDGEN UPTAKE KG HA-1YIELD KG HA-1Grain yield Grain N uptake Straw N uptake153 271Environment x Row spacing interactions on grain yield, straw yield, grain N uptake, straw N uptake and total N uptakeNarrow row (17.5 cm);               Wide row (35 cm) B A ABA A BAA A A A A B A AAAABA ABAA AA A A BBAAAAB A ABA0501001502002500100020003000400050006000Narrow Wide Narrow Wide Narrow Wide Narrow Wide2014_BOW ISLAND 2014_LETHBRIDGE 2015_BOW ISLAND 2015_LETHBRIDGEN UPTAKE (KG HA-1)YIELD (KG HA-1)Grain yield Straw yield Grain N uptake Straw N uptake Total N uptake13121622928 21Seeding density x Row spacing x Genotype interaction on Straw yieldWide row (35 cm);          Narrow row (17.5 cm)BBABA ACD DBC BAA0100020003000400050006000Narrow Wide Narrow Wide Narrow Wide Narrow Wide Narrow Wide Narrow Wide30 seed m-2 50 seed m-2 80 seed m-2 30 seed m-2 50 seed m-2 80 seed m-2Co-op F045R #3 NSC TilstonSTRAW YIELD (KG HA-1)CONCLUSIONSGenotypes: • It is recommended to plant C3 at Bow Island and N3 at Lethbridge for GRAIN YIELD but consider C3 for a higher N UPTAKE.Row spacing: INCONSISTENT  results• Narrow row yielded more than wide row 229 kg grain ha-1and 28 kg N ha-1 at Lethbridge in 2014;• Wide row yielded more than narrow row from 216 kggrain ha-1 and 21 kg N ha-1 at Lethbirdge in 2015.Seeding rates:• Maximum yield (2965 kg ha-1; 220 kg N ha-1) was attainedat the densities of 80 plants/m2➔ Soybean production in Southern Alberta would benefitfrom high planting densities but this may also increaseproduction costs associated with greater seeding rates.ACKNOWLEDGEMENTGreat thanks to:• AAFC-Lethbridge:, Andrew Olson, Kyle Shade, Newton Lupwayi, Parthiba Balasubramanian, Brett Hill• AF, Lethbridge: Allan Middleton, Pat Pfiffner, Chris Hietamaa, Colin Enns, Darryle Thiessen, • AF, Brooks: Art Kruger• University of Lethbridge: Lorne Howey, Jason Cousin (summer student)THANK YOU!QUESTIONS tram.thai@uleth.ca

Genotype, row spacing, and seeding rate effects on irrigated short-season soybean in southern Alberta

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Genotype, row spacing, and seeding rate effects on irrigated short-season soybean in southern Alberta

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