Strip Till Answers - Peter Johnson - 13

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Strip Till

Peter Johnson

WheatPete.com

[email protected]

519 318 2040

Answers?

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www.realagriculture.com

Sirius Satellite 147: Rural Radio

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Lake Erie

Richards et al., 2002

Agricultural Phosphorus…

0.4 lbs/ac/yr

Location Background P and K treatment

ANOVAP >F

P<20K<120

P>20K<120

P<20K>120

P>20K>120

bu/ac

Elora (5 yrs) 124 c 124 c 151 b 172 a <0.001

Bornholm (5 yrs)

Lucan (3 yrs) 188 b 204 a 186 b 206 a <0.001

Ridgetown (4 yrs)

Average 17 site-yrs

ALL starters

Corn yield response to background fertility-- averaged across starter treatments --

Mean separation within location statistically significant at P=0.05 @cropdoc2 #SWAC17

Location Background P and K treatment

ANOVAP >F

P<20K<120

P>20K<120

P<20K>120

P>20K>120

bu/ac

Elora (5 yrs) 124 c 124 c 151 b 172 a <0.001

Bornholm (5 yrs) 178 bc 183 bc 184 b 192 a <0.001

Lucan (3 yrs) 188 b 204 a 186 b 206 a <0.001

Ridgetown (4 yrs) 202 c 212 ab 206 bc 213 a <0.001

Average 17 site-yrs

ALL starters 172 c 180 b 181 b 196 a <0.001

High P+K starter only

187 c 195 b 190 c 200 a <0.001

Corn yield response to background fertility

Mean separation within location statistically significant at P=0.05 @cropdoc2 #SWAC17

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Fertility

13 bushel/acre corn moderate soil test

4 bushel/acre soybean moderate soil

test

11 bushel/acre wheat moderate soil

test

10 bu/ac corn starter on planter

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P Loss

Surface flow: particulate P

Surface flow: Dissolved Reactive P

Tile flow: macropore flow

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Soil Movement vs. Soil Loss

Soil Movement within Field Soil Loss (Sedimentation)

(productivity) (environment and productivity)

!

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Production Cost

of Erosion

11

Iowa Data (Rick Cruse, Iowa State U)

• Estimated 6.8 inches of

topsoil lost in Iowa over last 150

years

• Cost $300M/yr

(Kasemi et al, 1990)

3 bu/ac/yr

11 bu/ac/yr

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Erosion Costs Yield!

65 bu/acre 201 bu/acre

Huron County, Ontario

Soil Erosion Rate Estimate

4.2 tons/acSoil Erosion Rate Estimate

0.5 tons/ac

Source: R. Wilson and M. Veliz, ABCA Crops

and Creeks Project

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Strip Till

Reduced erosion

Reduced particulate P movement

Reduced DRP

Reduced tile P

Increased crop P efficiency

Increased yield?

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RESEARCH!!

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Protocol

Standard tillage vs strip till

Yield zones (low, medium, high)

No fertilizer

2/3 rate

Full rate (removal plus soil test factor)

Full rate plus sulphur

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0%

5%

10%

15%

20%

25%

30%

35%

40%

45%

2/3rds Full Full+S

%chan

gePhosphorus

AmountofCropRemoval

%ChangePhosphorusPre-Plant

Standard

Strip

Tillage Influence on Soil-test P (ppm)

0 20 40 60 80 100

No-till

Strip-till

Fall Chisel

Fall Plow

0 to 4"

4 to 8"

Vyn, Long term tillage trials 1975-2015

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Tillage Influence on Soil-test K (ppm)

0 100 200 300 400

No-till

Strip-till

Fall Chisel

Fall Plow

0 to 4"

4 to 8"

Vyn, Long term tillage trials 1975-2015

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@WheatPeteAaron Daigh NDSU

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@WheatPete-5%

-4%

-3%

-2%

-1%

0%

1%

2%

3%

1 2 4 6 7 8 9

NetDifferenceinYield(allzones)StripTill/Standard

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Yield Response to Timing and Placement

of MESZ Fertilizer in 2015

Source: M. Winters and T.J. Vyn

Three Year (2013-2015) Average Yield Response to

MESZ Banding with and without Starter 10-34-0

200

205

210

215

220

225

230

235

NT NF FSW NF FSW ZM SSW ZM FSW SSW N FSW BM SSW

N

FSW ZM SSW

N

Yie

ld (

bu

/ac)

Grain YieldNo Starter

Starter

Source: M. Winters and T.J. Vyn

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Strip Till Answers?

8” wide X 6” deep fall

Rough is okay (fall)

Plant on the strip!

Refresh spring? OPTIONS!

Seed to soil contact

Potash!

myveritas.ca

Thank you to project supporters

This project was funded in part through Growing Forward 2 (GF2), a federal-provincial-territorial initiative. The Agricultural Adaptation Council assists in the

delivery of GF2 in Ontario.

Grain Farmers of Ontario

Middlesex Soil & Crop Improvement Association

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Strip Till Answers - Peter Johnson - 13

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