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Double-Crop Soybean Yields after Barley in Northwest Ohio

Double-Crop Soybean Yields after Barley in Northwest Ohio
By Eric Richer, CCA, Sarah Noggle, and Garth Ruff
 
Several growers across the state had the opportunity to grow winter malting barley in 2018.  We had the opportunity to work with eight of those growers from Northwest Ohio, in particular, to learn more about the viability of growing this newly, re-introduced crop.  As a learning cohort of sorts, these growers agreed to share their yield and quality data results while participating in a simple, field-scale research project with these two objectives:
 
 1) Determine the field-scale, simple averages for yield (grain & straw), harvest date and quality characteristics for barley grown in Northwest Ohio.
 
Simply put: Can we grow barley with high yield and good quality?
 
2) Compare the yield and plant/harvest dates for the same variety soybean as a i) first crop system, ii) double crop after barley system and iii) double crop after wheat system.
 
Simply put: What will the double crop soybeans yield in this barley system?
 
The first objective from above was answered in an article we wrote in the CORN newsletter here https://agcrops.osu.edu/newsletter/corn-newsletter/2018-30/northwest-ohio-field-scale-barley-yield-results. To summarize, the barley data over nine sites in 2018 shows these averages for the variety Puffin: harvest date of June 26th,  barley yield of 86.5 bushels per acre, straw yield of 1.01 ton per acre and barley quality of 11.6% protein, 98.5% germination, 87.5% plumpness and .45 ppm DON.
 
In this article, we would like to focus on the soybean data associated with this study. The data presented below was based on one growing season and should be interpreted as such.
 
Study Design
 
Each barley grower in the cohort was asked to plant a ‘paired-site’ field of first crop soybeans adjacent to their barley field with the goal of comparing yields of double crop soybeans after barley to the of first crop soybeans (check).  Eight growers utilizing eleven different variety comparisons (sites) participated in these paired sites.  Additionally, four growers utilizing five variety comparisons (sites) had a wheat field adjacent to or nearby these paired sites and planted double crop soybeans after wheat.  One could consider the double crop soybeans after wheat a more important ‘check’ than first crop soybeans. It may depend on your perspective or whether you are a wheat grower or not.
 
Growers were asked to use the same soybean variety (Table 1) in each scenario to eliminate varietal differences. Soybeans maturities ranged from 2.5 to 3.5 and several trait platforms were used (non-GMO, Roundup, Xtend, and Liberty) based on the grower’s preference.
 

Table 1. Study Location Background - Soybean Fields

 

County

Pre-Plant Tillage

Variety

Maturity

Trait

Defiance

No Till

SC 93-35

3.2

RoundUp

Fulton - 1

Full Till

R333R2 Brodbeck

3.3

RoundUp

Fulton - 2

No Till

Pioneer 33A81 PR

3.3

Plenish

Fulton - 3

Full Till

Iowa 3051

3.1

Non-GMO

Fulton - 4

Full Till

Pioneer 31T11

3.1

RoundUp

Fulton - 5

Full Till

Rupp 31XT40

3.1

Xtend

Fulton - 6

No Till

Pioneer 27T91 PR

2.7

Plenish

Hancock

Full Till

Becks 3559XT

3.5

Xtend

Henry - 1

No Till

NuTech 3361L

3.3

Liberty

Henry -2

No Till

Pioneer 92T50

2.5

Non-GMO

Paulding - 1

No Till

AGI 3501XT

3.5

Xtend

One of the notable considerations for planting barley—especially for Northern Ohio—is the possibility of planting double crop soybeans 6-10 days earlier than one would normally plant after wheat.  In 2018, the average planting date for first crop soybeans was May 22 with an average as planted seeding rate of 175,000 seeds/acre. The average planting date for soybeans after barley was July 1 with an average seeding rate of 187,000 seeds/acre.  The soybeans planted after wheat had a July 7 average at an average seeding rate of 197,000 seeds/acre.  In this production year across these sites, the double crop soybeans after barley only gained 6 days as compared to those sites that had double crop soybeans after wheat. Additionally, all growers in the cohort felt strongly that removal of the straw made for more effective double crop soybean planting. 
 
Yield Results
 
All sites were harvested for yield, (Table 2) over nearly two months’ time due to challenging weather. All yields reported were standardized to 13% moisture. First crop soybeans yielded 59.3 bushels per acre with a 14.0% harvest moisture and had an average harvest date of October 17. The soybeans after barley yielded 36.6 bushels per acre with an 18.7% harvest moisture and had an average harvest date of November 17.  Finally, the soybeans after wheat yielded 19.5 bushels per acre with a harvest moisture of 17.8% and an average harvest date of November 29. 
 

Table 2. Average soybean data across paired sites.

   

Description

1st Crop Soybeans
(11 sites/varieties)

Soybeans after Barley
(11 sites/varieties)

Soybeans after Wheat
(5 sites/varieties)

Average

Range

Average

Range

Average

Range

Plant Date

May 22

May 1-June 7

July 1

June 26-July 12

July 7

July 5-12

Seeding Rate
(sds/ac)

175k

160-190k

187k

170-210k

197k

180-215k

Harvest Date

Oct 17

Oct 5-Nov 23

Nov 17

Oct 25-Dec 12

Nov 29

Nov 23-Dec 11

Harvest Moisture
(%)

14.0

11.0-18.5

18.7

14.3-25.0

17.8

16.5-18.7

Harvest Stand
(plants/ac)

113k

85-130

139k

115-173k

151k

130-180k

Yield
(bu/ac)

59.3

47-76

36.6

25-47

19.5

31-Jul

Barley Growing Considerations
 
The decision to raise a new crop like barley should be based on the information gathered by each producer, how that particular crop fits into each operation, having a contract and delivery point in place prior to planting, and the overall profitability of the enterprise.  Barley may or may not be for your farm.  It does allow a grower to add crop diversity to the rotation while using existing equipment (grain drill, sprayer, combine). However, growing a food grade, identity preserved (IP) crop requires specified quality standards and segregated storage as compared to commodity crops. Additionally, the planting and harvesting logistics for barley may not fit into all operations.  The list of advantages and disadvantages is much more extensive but these could be observed as some of the most important.
 
Summary
 
In summary, much is yet to be learned on barley production in Northwest Ohio.  Yield data from this growers’ cohort suggests that double crop soybean yield after barley can be significantly better than soybean yield after wheat.  While this article contains just one year of data from eight growers, it will start to answer the question of whether winter barley is a viable option for farmers in Northwest Ohio.