2017 NW Iowa Research Farm and On-Farm Project Results

Transcription

1 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

2 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 Dean Meyer Bruce Zomermaand Dave Rossman Steve Agar Morris Metzger & Marty Knobloch On-farm project coordinator - Andrew Weaver

3 Iowa Fungicide Efficacy Trials NWRF NRF NERF A&AE SWRF SERF

4 Corn Fungicide Summary 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

5 Location x Timing Boone NERF NRF a NWRF SERF b SWRF b 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

6 2017 Effect of timing on disease severity V5 application NO effect on disease NS 1-9 Up

7 Effect of timing on yield response NWRF NRF NERF AEA SWRF SERF Hybrid P0157AMX Mycogen 2A627 P0157AMX P0969AM P0937AM P1197AMXT GLS score Yield check Overall V R V5+R V ALL non-significant P<0.1

8 Corn Fungicide, NW Iowa, V-6 to V-8 stage, Treated minus Untreated, Bu/A N = AVE. = 0.53 bu/a

9 Corn Fungicide, NW Iowa, Ground Application, Treated minus Untreated, Bu/A N = 42 Average = 5.82 bu/a 5 0-5

10 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

11 Lodging (%) Effect of harvest date on lodging a a b b bc cd c a c d a a a b a d b b c bc b bc c c dd cd d d c NWRF NRF NERF AEA SWRF SERF

12 Lodging (%) Effect of fungicide on lodging a NS a a b a NS b b b NWRF NRF NERF AEA SWRF SERF No fungicide Fungicide

13 2017 Soybean Fungicide Trial Sioux County, Aproach fungicide No-till, planted , 4 reps Treated: Untreated: bu/a ave bu/a ave 13

14 Summary data from 60 Soybean Fungicide Trials, through 2017 Overall average: Treated = bu/a Untreated = 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

15 NW Iowa Row Spacing Trials Location Year Site Year Current Research Target Seeding Rate (1000 sds/ac) Hybrid Sac County , 35, 40 DeKalb Sac County , 35, 40 DeKalb Sac County , 35, 40 Mycogen 2A551 Sac County , 35, 40 Mycogen 2J597 Lyon County , 36, 42 Pioneer P0193 & P0297 Lyon County , 36, 42 Pioneer P0157 & P0297 O Brien County , 36, 42 DeKalb & O Brien County , 36, 42 Pioneer P0157 & P0297 O Brien County , 34, 38, 42 DeKalb & O Brien County , 34, 38, 42 Pioneer P0157 & P0297

16 * * * * *

17 9.3 bu/a* 1.4 bu/a -2.0 bu/a 4.9 bu/a* 16.2 bu/a* 7.9 bu/a* Lyon 2014 Lyon 2015 NWRF 2015 NWRF 2015 NWRF 2016 NWRF 2016 * = statistically significant

18 30 in. 20 in.

19 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

20 Soybean Plant Population Trials 37 trials through K average = 57.3 bu/a 175K = 57.6 bu/a One was statistically different at 3.3 bu/acre 20

21 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

22 Soybean row spacing trials trials 15 v average = bu/a 30 average = bu/a 5 of 14 showed at least a 3+ bu/a increase with narrow rows. 8 trials 18 v average = bu/a 36 average = bu/a 5 of 14 showed at least a 3+ bu/a increase with narrow rows. 22

23 NWRF Soybean row spacing research Asgrow 23

24 NWRF Soybean row spacing research Asgrow 24

25 NWRF Soybean row spacing research Pioneer 25

26 NWRF Soybean row spacing research Pioneer 26

27 Tilled v. No-Tilled Soybeans 17 trials, from 2006 through 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

28 Rolling Soybeans, , 21 trials Rolled average = 58.3 bu/acre Not rolled = 57.7 bu/acre 1 < 2 bu/acre 2 > 2 bu/acre Biggest was bu/a Photo from Corn+Soybean Digest, 6/12/15 28

29 Starter fertilizer on corn Osceola County 2 cooperators. Four gallons Zn in-furrow per acre. Soil test levels optimum or better. Location Starter, bu/a Untreated, bu/a 1 G Ave:

30 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

31 Aphid tolerant v. non-tolerant soybeans Sioux County, not treated for aphids, on organic acres Viking 2188 (tolerant) v. Viking bu/a 64.3 bu/a

32 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: bu/a bu/a Site 2: bu/a* bu/a * = significant at P <.10

33 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: bu/a bu/a Site #2: bu/a bu/a Site #3: bu/a bu/a Site #4: bu/a bu/a

34 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

35 To find results from additional trials, check these web sites: OR: There is more!!! crops **But full results won t be available in a printed form until February, I think.

36 What questions do you have for me? Thank you. Joel DeJong, ISUEO Field Agronomist Plymouth Co. Extension Office