2017 NW Iowa Research Farm and On-Farm Project Results 2018 Crop - - PowerPoint PPT Presentation

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2017 NW Iowa Research Farm and On-Farm Project Results 2018 Crop - - PowerPoint PPT Presentation

Apr 10, 2024 279 likes •654 views

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-

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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

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NW Iowa On-Farm Projects

On-farm project coordinator

  • Andrew Weaver

2017 Cooperators who completed projects: Gary Trei Dordt College - Mike Schouten Steve Abma Wes & Wade DeGroot Rodney & Ross Mogler Russ Glade Dean Meyer Bruce Zomermaand Dave Rossman Steve Agar Morris Metzger & Marty Knobloch

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Iowa Fungicide Efficacy Trials - 2017

NWRF SWRF SERF NERF NRF A&AE

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  • 40.00
  • 30.00
  • 20.00
  • 10.00

0.00 10.00 20.00 30.00 40.00

  • 40.00
  • 30.00
  • 20.00
  • 10.00

0.00 10.00 20.00 30.00 40.00

  • 40.00
  • 30.00
  • 20.00
  • 10.00

0.00 10.00 20.00 30.00 40.00

Corn Fungicide Summary 2010-2016

V5-V6 (N=168) Mean = 0.4 bu/A VT-R2 (N=N= 287) Mean = 3.5 bu/A V5-6 + VT-R2 (N=N= 287) Mean = 3.5 bu/A

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Location x Timing 2010-2016

Boone NERF NRFa NWRF SERFb SWRFb V5-V6 1.3

(N=37)

3.9

(N=31)

0.5

(N=24)

  • 0.6

(N=31)

  • 3.1

(N=20)

1.2

(N=25)

VT-R2 0.9

(N=60)

6.1

(N=52)

3.4

(N=40)

5.2

(N=53)

3.0

(N=38)

2.1

(N=43)

V5-V6 + VT-R2

  • 0.2

(N=32)

5.1

(N=32)

3.5

(N=25)

7.7

(N=31)

0.2

(N=20)

2.7

(N=26)

a No 2010 data b No 2016 data

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2017 Effect of timing on disease severity

NS

V5 application NO effect on disease

Up 1-9

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NWRF NRF NERF AEA SWRF SERF

Hybrid

P0157AMX Mycogen 2A627 P0157AMX P0969AM P0937AM P1197AMXT GLS score 4 6 4 3 5 5 Yield check

224.8 257.4 234.9 248.5 216.0 269.0 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

Effect of timing on yield response

ALL non-significant P<0.1

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  • 8
  • 6
  • 4
  • 2

2 4 6 8

Corn Fungicide, NW Iowa, V-6 to V-8 stage, 2010 - 2016

Treated minus Untreated, Bu/A N = 30

  • AVE. = 0.53 bu/a
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  • 5

5 10 15 20 25

Corn Fungicide, NW Iowa, Ground Application, 2008 - 2016

Treated minus Untreated, Bu/A N = 42

Average = 5.82 bu/a

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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
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Effect of harvest date on lodging - 2017

5 10 15 20 25 30 35 40 45 NWRF NRF NERF AEA SWRF SERF Lodging (%) a b d c c a b d bc cd a b d c bc a b c c a b c dd a bc cd a b d

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Effect of fungicide on lodging - 2017

5 10 15 20 25 30 35 40 NWRF NRF NERF AEA SWRF SERF

Lodging (%) No fungicide Fungicide

a b a b a b a b NS NS

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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

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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

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Sites were located in included Osceola, Lyon, Osceola, Buena Vista, Clay and Monona counties

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NW Iowa Row Spacing Trials Current Research

Location Year Site Year Target Seeding Rate (1000 sds/ac) Hybrid 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

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* * * * *

20” 30” 20” 30” 30” 20”

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4.9 bu/a* 16.2 bu/a* 9.3 bu/a* 1.4 bu/a

  • 2.0 bu/a

7.9 bu/a* * = statistically significant Lyon – 2014 Lyon 2015 NWRF 2015 NWRF 2015 NWRF 2016 NWRF 2016

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30 in. 20 in.

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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

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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

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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

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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.

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NWRF Soybean row spacing research – 2016 - Asgrow

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NWRF Soybean row spacing research – 2017 - Asgrow

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NWRF Soybean row spacing research – 2016 - Pioneer

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NWRF Soybean row spacing research – 2017 - Pioneer

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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.

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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

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Photo from Corn+Soybean Digest, 6/12/15

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Starter fertilizer on corn

  • Osceola County – 2 cooperators. Four gallons
  • 6-24-6-.5Zn in-furrow per acre. Soil test levels optimum
  • r 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

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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

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Aphid tolerant v. non-tolerant soybeans

  • Sioux County, not treated for aphids, on
  • rganic acres
  • Viking 2188 (tolerant) v. Viking 2065

66.7 bu/a 64.3 bu/a

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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

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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

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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
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  • 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.

There is more!!!

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Joel DeJong, ISUEO Field Agronomist Plymouth Co. Extension Office jldejong@iastate.edu 712-546-7835 @joel_dejong

Thank you.

What questions do you have for me?