2017 NW Iowa Research Farm and On-Farm Project Results 2018 Crop Advantage Series Joel DeJong, ISU Extension Field Agronomist Andrew Weaver, On-farm coordinator, NW Research Farm http://farms.ag.iastate.edu/content/northwest-research-and- demonstration-farm
NW Iowa On-Farm Projects 2017 Cooperators who completed projects: Gary Trei Dordt College - Mike Schouten Steve Abma Wes & Wade DeGroot Rodney & Ross Mogler Russ Glade On-farm project coordinator Dean Meyer Bruce Zomermaand - Andrew Weaver Dave Rossman Steve Agar Morris Metzger & Marty Knobloch
Iowa Fungicide Efficacy Trials - 2017 NWRF NERF NRF A&AE SWRF SERF
Corn Fungicide Summary 2010-2016 40.00� V5-V6 (N=168) 30.00� Mean = 0.4 bu/A 20.00� 10.00� 0.00� -10.00� -20.00� -30.00� -40.00� 40.00� VT-R2 (N=N= 287) 30.00� Mean = 3.5 bu/A 20.00� 10.00� 0.00� -10.00� -20.00� -30.00� -40.00� 40.00� V5-6 + VT-R2 30.00� (N=N= 287) 20.00� 10.00� Mean = 3.5 bu/A 0.00� -10.00� -20.00� -30.00� -40.00�
Location x Timing 2010-2016 SERF b SWRF b Boone NERF NRF a NWRF 1.3 3.9 0.5 -0.6 -3.1 1.2 V5-V6 (N=37) (N=31) (N=24) (N=31) (N=20) (N=25) 3.0 2.1 0.9 6.1 3.4 5.2 VT-R2 (N=38) (N=43) (N=60) (N=52) (N=40) (N=53) V5-V6 + -0.2 5.1 3.5 7.7 0.2 2.7 VT-R2 (N=32) (N=32) (N=25) (N=31) (N=20) (N=26) a No 2010 data b No 2016 data
2017 Effect of timing on disease severity V5 application NO effect on disease NS 1-9 Up
Effect of timing on yield response NWRF NRF NERF AEA SWRF SERF P0157AMX Mycogen Hybrid P0157AMX P0969AM P0937AM P1197AMXT 2A627 GLS score 4 6 4 3 5 5 224.8 257.4 234.9 248.5 216.0 269.0 Yield check Overall -2.3 1.9 1.2 4.7 -0.9 18.6 V5 0.0 4.9 -0.8 3.1 -6.1 15.6 R1 -3.7 2.2 1.5 7.0 1.4 19.2 V5+R1 -0.3 -2.9 0.8 0.0 -5.0 19.3 V12 -1.8 5.2 2.5 4.1 1.0 17.8 ALL non-significant P<0.1
Corn Fungicide, NW Iowa, V-6 to V-8 stage, 2010 - 2016 8 Treated 6 minus Untreated, 4 Bu/A N = 30 2 0 -2 AVE. = 0.53 bu/a -4 -6 -8
Corn Fungicide, NW Iowa, Ground Application, 2008 - 2016 25 20 Treated minus 15 Average = 5.82 bu/a Untreated, Bu/A N = 42 10 5 0 -5
Can fungicides improve standability? Treatments Fungicide applied: 1. Yes (Headline Amp 10 oz/A) 2. No Harvest date: 1. Slightly early 2. ~1 week later 3. ~2 weeks later 4. ~3 weeks later 5. ~ 4 weeks later
Effect of harvest date on lodging - 2017 45 a 40 a 35 b b 30 bc cd Lodging (%) a d 25 c a c a a a b 20 15 b b d bc b c 10 bc c dd cd c 5 c d d 0 NWRF NRF NERF AEA SWRF SERF
Effect of fungicide on lodging - 2017 40 a 35 NS 30 25 Lodging (%) 20 a a 15 a NS b b b 10 b 5 0 NWRF NRF NERF AEA SWRF SERF No fungicide Fungicide
2017 Soybean Fungicide Trial • Sioux County, Aproach fungicide • No-till, planted 5-13-17, 4 reps • Treated: 63.47 bu/a ave • Untreated: 63.59 bu/a ave 13
Summary data from 60 Soybean Fungicide Trials, through 2017 • Overall average: – Treated = 64.73 bu/a – Untreated = 62.37 bu/a • Other notes of interest: – None had the treated more than 1 bu/a less – 16 had more than a 3 bu/a increase with fungicide (27%) – 5 total Monona County trials, 4 had a greater than 3 bu/a increase Sites were located in included Osceola, Lyon, Osceola, Buena Vista, Clay and Monona counties 14
NW Iowa Row Spacing Trials Current Research Location Year Site Target Seeding Rate Hybrid Year (1000 sds/ac) Sac County 2009 1 30, 35, 40 DeKalb 61-69 Sac County 2009 2 30, 35, 40 DeKalb 61-69 Sac County 2010 3 30, 35, 40 Mycogen 2A551 Sac County 2010 4 30, 35, 40 Mycogen 2J597 Lyon County 2014 5 30, 36, 42 Pioneer P0193 & P0297 Lyon County 2015 6 30, 36, 42 Pioneer P0157 & P0297 O’Brien County 2015 7 30, 36, 42 DeKalb 52-84 & 53-36 O’Brien County 2015 8 30, 36, 42 Pioneer P0157 & P0297 O’Brien County 2016 9 30, 34, 38, 42 DeKalb 52-84 & 53-36 O’Brien County 2016 10 30, 34, 38, 42 Pioneer P0157 & P0297
20” 30” 20” 30” 20” 30” * * * * *
7.9 bu/a* 16.2 bu/a* 1.4 bu/a -2.0 bu/a 4.9 bu/a* 9.3 bu/a* Lyon – 2014 Lyon 2015 NWRF 2015 NWRF 2015 NWRF 2016 NWRF 2016 * = statistically significant
30 in. 20 in.
2017 Soybean Population Trials • Osceola County, conventional, planted 5/13, 30” rows 125K = 70.4 bu/a 150K = 69.9 bu/a 175K = 70.1 bu/a • Sioux County, no- till, planted 5/11, 30” rows 90K = 73.6 bu/a 130K = 74.3 bu/a 110K = 73.9 bu/a 150K = 75.8 bu/a 19
Soybean Plant Population Trials 37 trials through 2016 125K average = 57.3 bu/a 175K = 57.6 bu/a One was statistically different at 3.3 bu/acre 20
2017 Soybean Row Spacing Trial • Lyon County, Strip-till, planted 5/10, 140K, following corn, 3 reps. • 30” rows averaged 66 bu/acre • 15” rows averaged 61.7 bu/acre • NOTE: Significant white mold in this plot 21
Soybean row spacing trials – ’08 – ‘14 • 14 trials 15” v. 30” – 15” average = 60.64 bu/a – 30” average = 58.24 bu/a • 5 of 14 showed at least a 3+ bu/a increase with narrow rows. • 8 trials 18” v. 36” – 18” average = 59.99 bu/a – 36” average = 55.61 bu/a • 5 of 14 showed at least a 3+ bu/a increase with narrow rows. 22
NWRF Soybean row spacing research – 2016 - Asgrow 23
NWRF Soybean row spacing research – 2017 - Asgrow 24
NWRF Soybean row spacing research – 2016 - Pioneer 25
NWRF Soybean row spacing research – 2017 - Pioneer 26
Tilled v. No-Tilled Soybeans • 17 trials, from 2006 through 2016. – Mostly compared to a single pass tillage • Overall average: Tilled = 60.4 bu/a No-tilled = 60.3 bu/a • 3 of 17 had a 2 bu/a or greater increase with tillage; 2 favored no-till by 2 bu/a or more. 27
Rolling Soybeans, 2009 – 2014, 21 trials Rolled – average = 58.3 bu/acre Not rolled = 57.7 bu/acre 1 < 2 bu/acre 2 > 2 bu/acre Biggest was + 6.3 bu/A Photo from Corn+Soybean Digest, 6/12/15 28
Starter fertilizer on corn • Osceola County – 2 cooperators. Four gallons • 6-24-6-.5Zn in-furrow per acre. Soil test levels optimum or better. Location Starter, bu/a Untreated, bu/a 1 G 214.4 210.4 2 244.8 240.5 3 252.2 250.5 4 246.3 243.4 5 259.4 256.3 6 247.0 244.7 7 219.7 224.6 8 250.9 252.3 Ave: 241.8 240.3 29
Soybean Variety & Herbicide Trial • Sioux County. Authority + Warrant. F/B Liberty (L beans); Flexstar + glyphosate (R beans); or Extendimax + glyphosate (X beans). P22T10L P22T73R P22T24X 69.4 bu/a 75.6 bu/a 74.4 bu/a 30
Aphid tolerant v. non-tolerant soybeans • Sioux County, not treated for aphids, on organic acres • Viking 2188 (tolerant) v. Viking 2065 66.7 bu/a 64.3 bu/a
Corn RW Insecticide trial on continuous corn • Lyon County, planted May 4. Both hybrids contain Herculex Extra traits. • 5 reps With Aztec HC W/out Site 1: 218.1 bu/a 214.5 bu/a Site 2: 236.8 bu/a* 231.0 bu/a * = significant at P < .10
Corn Herbicide Yield Comparison A trial to compare crop yield on corn post treated with either Impact+atrazine+MAS+AMS to Realm Q + glyphosate Impact Realm Q Site #1: 231.6 bu/a 233.1 bu/a Site #2: 252.8 bu/a 254.4 bu/a Site #3: 229.7 bu/a 231.7 bu/a Site #4: 232.7 bu/a 233.7 bu/a
Other trials conducted on NW Iowa farms in 2017 • Encirca with Y-drop N application • Soybean inoculation • Side dress N vs. none with manure • Early v. late planting of soybean
There is more!!! • To find results from additional trials, check these web sites: – http://farms.ag.iastate.edu/farms • OR: – http://www.extension.iastate.edu/plymouth/ crops **But – full results won’t be available in a printed form until February, I think.
What questions do you have for me? Thank you. Joel DeJong, ISUEO Field Agronomist Plymouth Co. Extension Office jldejong@iastate.edu 712-546-7835 @joel_dejong
Recommend
More recommend
