Corn Tillage and Plant Nutrition Research, NDSU Carrington Research Extension Center
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1 Corn Tillage and Plant Nutrition Research, NDSU Carrington Research Extension Center Greg Endres, NDSU Extension area agronomist Carrington Research Extension Center
2 North Dakota State University
3 Corn tillage and placement of fertilizer study, G. Endres and P. Hendrickson
4 Strip Till for Field Crop Production Equipment*Production*Economics (AE-1370) Available at NDSU Extension Service offices or
5 Materials and Methods (corn) Heimdal-Emrick loam with % o.m. Previous crop: spring wheat Strip till Yetter fall: Oct-Nov; spring (2007): April tillage: 4-7 inch depth and 8-10 inch wide strips 30-inch rows plots: ft wide x ft deep RCB design with 4 reps
6 CREC strip till research: Tillage treatments 1. conventional 2. no-till (direct seed) 3. strip till (fall)
7 % Wheat residue levels among tillage systems in corn trial, Carrington, 2009* LSD (0.05) = 7 Conv till No-till Strip till - fall *Taken after corn planting using line-transect method.
8 Conservation Tillage Systems and Management Midwest Plan Service no. 45
9 No-till Fall strip-till Carrington corn tillage trial: Planted May 8, Picture taken July 9.
10 Corn tillage system soil temperatures (2- inch depth), Carrington, May 18-31, Soil Temp *F Conv Till Soil Temp *F No-Till Soil Temp *F Strip Till May 19 planting May 31
11 Corn plant development differences among tillage systems, Carrington, *. Strip till No-till Conv till days emergence silk *Statistically significant (LSD=0.05): emergence=2007 and 2009; silk=
12 plants/acre (x1000) 34 Corn stand among tillage systems, Carrington, * Conv till No-till Strip till - fall *LSD (0.05) = NS each year
13 bu/acre Corn yield among tillage systems, Carrington, 2009*. 100 LSD (0.05) = NS Conv till No-till Strip till * Fall strip till on Oct 31, 2008; Planted May 19 with 2x2 band of 6 gal/a
14 bu/acre 125 Corn yield among tillage systems, Carrington, * Conv till No-till Strip till - fall *LSD (0.05) = NS each year
15 CREC Research Summary: Corn yield with strip-till compared to other tillage systems 3 site-yr average: trend of conv > strip > no-till
16 Carrington, 2009 Spring P soil analysis: 9 ppm Fertilizer placement treatments : 1. untreated check (ST) 2. fall deep band (ST) 3. spring in-furrow (ST) 4. spring 2x2 band (ST, conv till, NT) 2x placement in no-till during planting 6 gpa in-furrow placement in strip till during planting
17 Strip till corn plant development differences among fertilizer placement, Carrington, *. in furrow 2x2 band fall deep band untreated check days emergence silk *Statistically significant (LSD=0.05): emergence=2009; silk=2008 and 2009.
18 plants/acre (x1000) Strip till corn stand among fertilizer placement, Carrington, * fall deep band 26.9 in-furrow 2x2 band untreated check *LSD (0.05) = NS each year
19 bu/acre Strip till corn yield among fertilizer placement, Carrington, 2009*. 125 LSD (0.05) = NS Fall deep band Spring infurrow Spring 2x2 utc * P=9 ppm; Planted May 19; 6 gal/a
20 bu/acre Strip till corn yield among fertilizer placement, Carrington, * Fall deep band Spring infurrow Spring 2x2 utc *P: 2008=20 ppm, 2009=9 ppm; Planted May 13 and 19; 5-6 gal/a ; LSD (0.05) = NS each year.
21
22 Corn yield with in-furrow , Carrington, Rate Yield (bu/a) gal/a LSD (0.05) 22 NS Conventional tillage Soil P: 5 ppm (low) in 2007; 10 ppm (med) in 2008 No difference in plant stand among fertilizer rates each year. P. Hendrickson
23 Corn stand with in-furrow , Carrington, * * gallons/acre
24 Corn yield with placement of 6 gal/a , Carrington, NS each yr
25 Special corn inputs, CREC, QuickRoots (TJ Technologies) 2005 APSA : yield increase in 1 of 6 site-yr Bio Forge, Bio Power, Xtra Power (StollerUSA) 2006 Avail (SFP) 2007 and 2009 Torque (EMD Crop BioScience) AgBlend and SoilBuilder (Advanced Microbial Solutions) 2008 Nutrisphere (SFP)
26 Direct-seeded corn response to N rate and timing of weed control, Carrington, N (lb nitrate-n/acre) Spring soil = 24 PP (urea) = 0, 50, rain 13 DAA POST (UAN; 4-leaf) = rain 1 DAA Weed control 1. weed free (soil/post) soil = Surpass + RU PowerMax; POST = RU PowerMax 2. early POST/POST target 2-4 weed 3. late POST/POST target 8-12 weed
27 early POST late POST untreated check weed free early POST late POST 150 lb N/acre
28 Direct-seeded corn response to N rate and timing of weed control, Carrington, Total N Basal stalk N Grain yield TW Grain M lb/a ppm bu/a lb/bu % 50 x LSD (0.05) NS 1.6 Weed timing Basal stalk N Grain yield TW Grain M ppm bu/a lb/bu % UTC x weed free EPOST LPOST LSD (0.05) NS
29 Direct-seeded corn yield with N rate X timing of weed control, Carrington, 2009.
30 Questions or Comments?
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