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2021 Corn Hybrid Demonstration Program Results

Filed Under:
Publication Number: P3695
View as PDF: P3695.pdf

Coordinator: Dr. Erick Larson

Extension Associate: Nolan Stapleton

MSU Extension Supervisors: Preston Aust, Andy Braswell, Dr. Bill Burdine, Alex Deason, Dan Haire, Ty Jones, Dr. Ben Lawrence, Kyle Lewis, Dr. Justin McCoy, Reid Nevins, Tracy Robertson, Dr. Mark Shankle, James Shannon, Charlie Stokes, and Lea Turner

Grower Cooperators: Spencer Alderman, Brown Farms, Dantzler Pilkinton and Phillips Farm, Dunn Farms, Cecil Ferrell, Guedon Farms, Michael Hawks, David Hey, Danny Mashburn, Murphy Farms, Matthew Poe, Shellmound Farms, Steve Skelton, and Woodyard Planting Company

Program Objectives: The Corn Hybrid Demonstration Program is intended to provide corn growers, crop consultants, and other agricultural professionals a firsthand opportunity to observe performance of elite hybrids and generate information to better assess hybrid performance and adaptability in Mississippi. This program provides a unique opportunity to observe and evaluate plant characteristics and environmental responses of our best corn hybrids in local, on-farm demonstration plots representing our production systems.

Program Methodology: Hybrids voluntarily entered in this program must be validated by producing superior grain yield in the Mississippi Corn for Grain Hybrid Trials or be a relevant market standard. Hybrids are selected annually and grouped into two distinct sets based upon performance in dryland or irrigated culture, since both these cropping systems are prevalent in Mississippi and can affect hybrid adaptability. Seed companies are granted the discretion to enter hybrids that have demonstrated superior performance in the Mississippi Corn for Grain Hybrid Trials, or a newly released hybrid that they believe is more promising or better adapted. This establishes an elite group of corn hybrids for evaluation in the program. Each standardized set of hybrids is grown at numerous field locations representing Mississippi cropping systems. Mississippi State University Extension regional agronomic crop specialists and county agricultural agents coordinate locations with grower cooperators and supervise plots. Mississippi Agricultural and Forestry Experiment Station scientists also grow some trials on branch stations.

Grain Yield Data: Hybrids evaluated in this program are generally planted in “strip trials.” Yield data generated from a single location are not as reliable as when treatments are replicated numerous times. Treatment replication reduces the effect of numerous factors that can impart variability that may affect performance and confound results. Thus, average yields are calculated from data collected at multiple locations and presented in this publication to better assess yield performance related to hybrid genetics. Analyses of yield data were performed with SAS using GLM procedures, and means are separated at the 0.05 level. This yield data derived from numerous, diverse environments is intended to supplement data generated in university hybrid trials.

Technology Traits: All hybrid entries are glyphosate tolerant. Inclusion of other traits is optional and is primarily based on product availability and the discretion of the respective seed companies. Corn borer protection normally enhances yield at locations where corn borers are present. All seed are commercially treated with an insecticide seed treatment, which is at the discretion of each respective seed company. Seed treatments are utilized to minimize damage from insect pests during seedling establishment.

Relative Maturity: Maturity is measured and reported as the number of days to tassel, as well as grain moisture at harvest. Grain moisture is represented for locations where grain was still actively drying at harvest.

Plant Height: Full plant height is measured after tassel emergence. Plant height is one of several factors that may affect light interception, which is critical to photosynthesis and grain yield. Short plant height may reduce potential light interception, particularly in wide rows. Tall plants are generally more likely to lodge and will likely have higher water demand during the growing season.

Ear Height: Ear height is measured and represented as a mean height above the soil surface. High ear placement may promote more efficient energy utilization in the plant, as leaves in the upper canopy intercept more light and produce more photosynthetic energy for the developing ear. However, high ear placement may make plants more top-heavy and thus more prone to lodge when exposed to strong wind.

Root Strength: This is an evaluation of a hybrid’s ability to resist root lodging. Root lodging occurs when the force caused by wind exceeds the roots’ ability to stabilize plants and keep them erect, particularly if the soil is moist and soft. Thus, the entire stalk leans or completely falls to ground level, often dislodging part of the root system from the soil. This may promote a “domino effect,” causing lodging in sizable portions of a field. Root lodging normally occurs as plants approach physiological maturity, since the mass of the plant is greatest at this time. Root lodging may considerably hinder harvest efficiency because plants lay nearly flat on the ground and are often partially uprooted from the soil, making stalks difficult to gather and flow into a combine.

Stalk Integrity: This is a characterization of the plant’s ability to maintain physical integrity after physiological maturity. Poor stalk integrity typically appears as weak or broken stalks, particularly above the ear, and shriveled, shredded, or dislodged leaves. Late-season stress and adverse weather often promote plant deterioration during the time between physiological maturity and harvest.

Greensnap: This is a relative rating of resistance to stalk breakage during vegetative development stages. Greensnap is more likely to occur during mid to late vegetative growth stages when stalks are rapidly developing and may be brittle and vulnerable to breakage if exposed to high winds. Breaks normally occur on the stalk below where the ear should develop. Thus, damaged plants rarely produce a viable ear.

Disease Resistance: Disease resistance represents a hybrid’s ability to resist infection from a specific pathogen. Southern rust and Curvularia leaf spot were rated during 2020 based upon degree of disease presence.

Yield Components: Corn grain yield is determined by the total number of kernels produced and kernel weight. Kernel number is the number of kernel rows an ear produces and the number of kernels per row. Each of these traits are determined during different growing stages. Kernel row number is determined during late vegetative stages and is the first yield component determined by the plant. Kernel number is primarily determined during the first few weeks after pollination as young kernels develop until the milk stage. Kernel weight is the final yield component determined and is largely dependent upon favorable conditions from milk stage until physiological maturity.

Test Weight: Test weight is a measurement of grain bulk density and an indicator of general grain quality. It is a standard component used to assess official grain grade for commercial trade.

2021 Grain Yield Summary (bushels per acre)

Dryland Locations

Brand

Hybrid

Canton

Natchez

West Point

Greenwood

Artesia low pop

Artesia high pop

Pontotoc Exp. Station

Marianna

Bolton

MSU

Pontotoc

Shell-mound

N. MS R&E Center

Average yield*

AgriGold

A6544

220

199

185

164

189

206

158

176

190

187

201

130

140

180 BCD

AgriGold

A6572

209

168

193

155

185

197

188

175

159

202

203

99

161

176D

AgriGold

A6659

209

199

191

167

179

193

158

182

171

176

203

136

163

179BCD

DEKALB

DKC65-99

212

206

198

171

190

207

174

195

189

187

213

140

157

188AB

DEKALB

DKC67-44

216

144

204

169

200

215

179

202

186

190

215

139

154

186ABC

DEKALB

DKC68-69

222

199

189

185

204

218

170

207

188

189

221

136

152

191A

Dyna-Gro

D58VC65

218

192

186

167

199

200

172

183

193

190

217

85

144

180BCD

Great Heart

HT-7462

204

147

184

145

180

191

162

163

176

188

190

116

130

167E

Local Seed

LC1577

227

190

190

158

198

203

161

166

174

205

218

83

146

178CD

Local Seed

LC1898

208

187

191

160

192

203

169

185

186

197

193

136

151

181BCD

Mission

A1548DG

202

174

184

149

176

196

163

193

172

187

204

134

138

175DE

Pioneer

P1464

197

148

175

150

188

192

168

187

183

207

212

109

138

173DE

Progeny

PGY 8116

192

185

179

150

186

197

162

185

168

188

188

129

146

173DE

Progeny

PGY 9114

226

181

190

148

204

218

132

190

169

200

211

136

138

180BCD

Location avg.

 

211

180

189

160

191

203

165

185

179

192

206

122

147

179

 

Soil type/

Planting date

Canton

Natchez

West Point

Greenwood

Artesia Low Pop

Artesia High Pop

Pontotoc Exp. Station

Marianna

Bolton

MSU

Pontotoc

Shell-mound

N. MS R&E Center

Soil type

Grenada silt loam

Convent silt loam

Griffith silty clay

Adler silt loam

Vaiden silty clay

Vaiden silty clay

Providence silt loam

Ochlocknee sandy loam

Loring silt loam

Leeper silty clay loam

Marietta loam

Dubbs loam

Leeper silty clay loam

Planting date

4/3/20

3/18/20

5/2/20

5/6/20

5/6/20

5/6/20

4/27/20

5/4/20

4/11/20

4/6/20

5/4/20

5/5/20

5/4/20

* Grain yields were analyzed, and average yield values represented with any combination of the same letter are not significantly different (P < 0.05).

2021 Plant Characteristic Ratings

Dryland Entries

Brand

Hybrid

Days to tassel

% Grain moisture

Plant ht. (feet, 10ths)

Ear ht. (feet, 10ths)

Root strength

Stalk integrity

Greensnap resistance

Southern rust resistance

Curvularia leaf spot resistance

Test wt. (lb/bu)

Kernel rows

Kernels per row

Seed wt. (g/250)

AgriGold

A6544

64

15.6

8.7

4.1

Medium

Med-Low

Low

Medium

High

58.4

16.3

37.0

82.5

AgriGold

A6572

68

15.5

8.8

4.2

High

Med-High

Medium

Med-Low

High

60.4

15.6

36.3

87.1

AgriGold

A6659

67

16.1

8.7

4.0

High

Med-High

Very Low

Med-High

Medium

59.0

14.1

36.3

87.8

DEKALB

DKC65-99

66

15.7

8.4

3.9

Med-High

Medium

Low

High

Med-Low

59.3

16.5

36.6

86.2

DEKALB

DKC67-44

66

16.2

9.1

4.2

Low

Medium

Low

Med-High

Med-High

59.5

16.1

36.8

85.8

DEKALB

DKC68-69

68

17.7

9.1

4.1

Medium

High

Med-Low

Medium

Med-High

60.6

16.3

33.6

90.6

Dyna-Gro

D58VC65

66

16.2

8.4

3.8

High

Medium

Medium

Med-Low

Medium

59.8

15.1

35.2

87.2

Great Heart

HT-7462

64

16.4

8.3

3.6

Med-High

Low

High

Low

Med-High

58.0

16.4

37.3

84.8

Local Seed

LC1577

64

15.5

8.4

3.8

Med-High

Med-Low

Very High

Med-High

Low

59.7

14.9

38.8

85.4

Local Seed

LC1898

67

15.5

8.9

4.1

Medium

Med-High

Medium

Medium

Medium

59.9

15.5

34.0

91.1

Mission

A1548DG

65

16.1

8.7

4.0

High

Medium

Med-High

Med-Low

Med-High

58.4

15.4

36.7

84.9

Pioneer

P1464

66

15.7

9.5

4.5

Med-Low

Low

High

Medium

High

59.1

15.1

40.1

80.5

Progeny

PGY 8116

67

16.3

8.8

4.3

High

Medium

Medium

Med-Low

High

60.2

17.1

37.6

82.1

Progeny

PGY 9114

64

15.5

8.3

3.7

Med-High

Med-Low

Very High

Med-High

Low

59.6

15.0

38.3

87.4

Average

   

16.0

8.7

4.0

         

59.4

15.7

36.8

85.9

2021 Grain Yield Summary (bushels per acre)

Irrigated Locations

Brand

Hybrid

Itta Bena

Shaw

Greenwood

MSU

Philipp

Pontotoc

Stoneville

Average yield*

AgriGold

A6544

241

239

219

215

221

184

151

210 BCDEFG

AgriGold

A6659

232

240

212

241

211

186

199

217 ABC

DEKALB

DKC65-99

239

246

216

218

222

205

198

221 AB

DEKALB

DKC67-44

247

243

222

231

232

197

214

226 A

DEKALB

DKC70-27

232

239

207

229

227

191

186

216 BC

Dyna-Gro

D55VC80

214

234

211

215

208

197

191

210 CDEFG

Dyna-Gro

D58VC65

242

239

204

214

223

180

172

210 BCDEF

Great Heart

HT-7425

221

224

195

216

201

184

191

205 DEFG

Local Seed

LC1898

236

240

212

224

221

192

192

217 ABC

Local Seed

LC1987

226

227

208

211

230

196

197

214 BCDE

Mission

A1548DG

212

227

190

206

198

185

208

204 EFG

Pioneer

P1077

215

236

187

210

207

163

189

201 FG

Pioneer

P1870

223

235

203

226

213

180

223

215 BCD

Progeny

PGY 2015

216

221

185

195

217

179

185

200 G

Location avg.

 

228

235

205

218

216

187

192

212

 

Soil type/

Planting date

Itta Bena

Shaw

Greenwood

MSU

Philipp

Pontotoc

Stoneville

Soil type

Tensas silty clay loam

Alligator silty clay

Adler silt loam

Marietta sandy loam

Dubbs loam

Falkner silt loam

Commerce very fine sandy loam

Planting date

4/6/20

5/4/20

4/11/20

4/28/20

4/28/20

4/27/20

4/28/20

*Grain yields were analyzed, and average yield values represented with any combination of the same letter are not significantly different (P < 0.05).

2021 Plant Characteristic Ratings

Irrigated Entries

Brand

Hybrid

Days to tassel

% Grain moisture

Plant ht. (feet, 10ths)

Ear ht. (feet, 10ths)

Root strength

Stalk integrity

Greensnap resistance

Southern rust resistance

Curvularia leaf spot resistance

Test wt. (lb/bu)

Kernel rows

Kernels per row

Seed wt. (g/250)

AgriGold

A6544

64

16.7

8.0

3.7

Med-Low

Med-Low

Med-High

Med-High

Med-High

58.5

16.1

36.4

88.3

AgriGold

A6659

67

17.7

8.2

3.7

High

High

Low

Med-High

Med-Low

59.3

14.8

35.2

94.5

DEKALB

DKC65-99

66

17.8

7.8

3.5

High

Medium

Med-Low

High

Med-Low

58.4

16.9

31.9

92.3

DEKALB

DKC67-44

66

17.2

8.4

3.7

Low

Medium

Med-High

Medium

Medium

59.9

15.8

32.0

92.1

DEKALB

DKC70-27

67

18.5

8.2

3.8

Medium

High

Medium

Medium

Med-High

59.3

17.3

28.6

90.1

Dyna-Gro

D55VC80

66

17.7

8.2

3.9

Medium

High

Low

Med-High

Med-High

58.1

15.9

29.6

93.4

Dyna-Gro

D58VC65

66

16.8

7.6

3.3

High

Med-Low

High

Med-Low

Med-Low

60.1

15.7

31.8

94.9

Great Heart

HT-7425

66

17.2

8.0

3.7

High

Med-Low

Med-High

Med-Low

Med-Low

58.8

15.6

34.3

87.6

Local Seed

LC1898

66

16.6

8.1

3.8

Medium

Med-High

Medium

Med-High

Med-Low

60.2

16.5

30.1

94.9

Local Seed

LC1987

67

17.8

8.4

3.9

High

High

High

Med-Low

Medium

59.9

15.4

32.6

96.9

Mission

A1548DG

66

17.3

8.0

3.7

High

Medium

Med-High

Med-Low

Medium

58.5

15.5

33.2

86.3

Pioneer

P1077

65

16.0

8.0

3.4

Medium

Low

High

Low

Medium

58.6

14.4

41.9

78.3

Pioneer

P1870

68

18.5

8.3

3.6

Med-High

Med-Low

High

Medium

Medium

59.3

16.6

40.2

80.8

Progeny

PGY 2015

66

16.3

8.0

3.9

High

Med-Low

Low

Med-High

Medium

59.7

15.3

37.2

92.9

Average

 

66

17.3

8.1

3.7

         

59.2

15.8

33.9

90.2

The information given here is for educational purposes only. References to commercial products, trade names, or suppliers are made with the understanding that no endorsement is implied and that no discrimination against other products or suppliers is intended.


Publication 3695 (POD-08-21)

By Erick Larson, PhD, Extension/Research Professor, Plant and Soil Sciences.

Department: Plant and Soil Sciences
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Authors

Portrait of Dr. Erick J. Larson
Extension/Research Professor
Associate Agronomist/Specialist - Corn, Grain Sorghum and Small Grains

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