Virginia Cooperative Extension programs and employment are open to all, regardless of race, color, religion, sex, age, veteran status, national

Size: px

Start display at page:

Download "Virginia Cooperative Extension programs and employment are open to all, regardless of race, color, religion, sex, age, veteran status, national"

Carmella Wood
5 years ago
Views:

1 Publication Revised 2003

2 Virginia Cooperative Extension programs and employment are open to all, regardless of race, color, religion, sex, age, veteran status, national origin, disability, or political affiliation. An equal opportunity/affirmative action employer. Issued in furtherance of Cooperative Extension work, Virginia Polytechnic Institute and State University, Virginia State University, and the U.S. Department of Agriculture cooperating. Judith H. Jones, Interim Director, Virginia Cooperative Extension, Virginia Tech, Blacksburg; Lorenza W. Lyons, Administrator, 1890 Extension Program, Virginia State, Petersburg.

3 INDEX TO VIRGINIA CORN HYBRID AND MANAGEMENT TRIALS 2003 VIRGINIA CORN HYBRID TRIALS IN Companies participating in the 2003 Corn Hybrid Trials 2003 Virginia Corn Hybrid Plot Information and Management Practices Table Relative Yield of hybrids entered in three or more locations. Table 2. Two-Year Average Relative Yield of hybrids entered in three or more locations. Table 3. Three-Year Average Relative Yield of hybrids entered in three or more locations. Table 4. Yields at Holland, VA in Table 5. Two-year average yields at Holland, VA in 2002 and Table 6. Three-year average yields at Holland, VA in 2001, 2003, and Table 7. Yields at Mt. Holly, VA in Table 8. Two-year average yields at Mt. Holly, VA in 2002 and Table 9. Three-year average yields at Mt. Holly, VA in 2001, 2002, and Table 10. Yields at Mt. Holly, VA under irrigation in Table 11. Two-year average yields at Mt. Holly, VA under irrigation in 2002 and Table 12. Three-year average yields at Mt. Holly, VA under irrigation in 2001, 2002, and Table 13. Yields at Blackstone, VA in Table 14. Yields at Orange, VA in Table 15. Two-year average yields at Orange, VA in 2002 and Table 16. Three-year average yields at Orange, VA in 2001, 2002, and Table 17. Yields at Shenandoah Valley, VA in Table 18. Two-year average yields at Shenandoah Valley, VA in 2002 and Table 19. Three-year average yields at Shenandoah Valley, VA in 2001, 2002, and Table 20. Yields at Blacksburg, VA in Table 21. Two-year average yields at Blacksburg, VA in 2002 and Table 22. Three-year average yields at Blacksburg, VA in 2001, 2002, and Table 23. Yields at Southwest Virginia in Table 24. Two-year average yields at Southwest Virginia in 2002 and Table 25. Three-year average yields at Southwest Virginia in 2001, 2002, and

4 VIRGINIA CORN HYBRID TRIALS IN Companies Participating in the 2003 Corn Hybrid Trials Company Brand Address AUGUSTA SEED CORPORTATION AUGUSTA 106 FAIRBURN RD MT SOLON VA BIO GENE BIO GENE 5491 TRI COUNTY HWY SARDINIA OH CHEMGRO SEEDS CHEMGRO PO BOX 218 EAST PETERSBURG PA DOEBLER'S PA. HYBRIDS INC. DOEBLER'S 202 TIADAGHTON AVE JERSEY SHORE PA HYTEST SEEDS HYTEST 454 RAILROAD AVE SHIREMANSTOWN PA MID-ATLANTIC SEEDS MID-ATLANTIC 204 ST CHARLES WAY #163E YORK PA MONSANTO DEKALB AND ASGROW 3100 SYCAMORE RD DEKALB IL PIONEER, A DUPONT COMPANY PIONEER 800 TIFFANY BLVD SUITE 200 ROCKY MOUNT NC ROYSTER-CLARK, INC. VIGORO BRAND 717 ROBINSON RD WASHINGTON C.H. OH SOUTHERN STATES COOP., INC. SOUTHERN STATES PO BOX RICHMOND VA SYNGENTA SEEDS, INC. NK BRAND PO BOX 959 MINNEAPOLIS MN T.A. SEEDS T.A. SEEDS PO BOX 300 AVIS PA VIRGINIA CORN HYBRID TRIALS IN 2003 Coordinated by H. Behl, D. E. Brann, and E. G. Rucker Department of Crop and Soil Environmental Sciences Virginia Tech, Blacksburg, VA Other contributors include: B. Ashburn; B. Beahm; T. Custis; W.B. Wilkinson; R.R. Wilmouth; D.E. Starner; J. Wooge; C. Lawrence; the Phillips family; Phil Blevins; the Johnson family. Performance trials of commercial corn hybrids were conducted at seven locations in Virginia in One location consisted of an irrigated and a non-irrigated test. Test weights were taken with a GrainGauge manufactured by HarvestMaster and calibrated over seven years of testing. A list of the companies participating in the trials is shown above. All hybrids entered in the Virginia trials were those submitted by commercial companies. The locations at which particular hybrids were entered were specified by the company. Companies entering hybrids were charged a fee for each hybrid per location to support the Corn Performance Trials. All locations except Orange were planted with a Wintersteiger PlotKing Orange was planted by hand and thinned to the desired population. All locations except Orange were harvested with a Massey-Ferguson 8XP plot combine. Orange was hand-harvested and shelled to obtain grain weights. Yields have been adjusted to 15% moisture. Yield Differences Experimental plots vary in yield and other measurements due to location in the field and other factors which cannot be controlled. Statistics given in the tables are intended to help the reader make valid comparisons between hybrids. The magnitude of differences which may have been due to uncontrollable variation has been computed for the data and listed at the bottom of columns as the LSD (.05) (least significant difference with 95% confidence). Differences less than the LSD are assumed not to be real differences with 95% confidence. Choice of Hybrids When making hybrid selections it is important to realize that hybrids differ in their performance under different environments. Some hybrids are more adapted to a wide range of environments. Hybrid performance may vary with year and location variations in rainfall, temperature, pests and other environmental variables. In these experiments, many hybrids have essentially the same yield, and great care should be taken in interpreting the results of a single year's tests, especially at only one location. For these reasons it is important, whenever possible, to also look at a hybrid's average across locations when making hybrid selections. Multi-year averages give even greater confidence to hybrid performance decisions. The relative yield tables compare the yield of a hybrid to the average yield of all hybrids in the test. These tables are an excellent summary of yield potential compared to other hybrids. Appreciation is expressed to the Virginia Corn Check- Off Board for financial support of this research and the Virginia Extension corn program. 2

5 2003 VIRGINIA CORN HYBRID PLOT INFORMATION (Rates are on a per acre basis.) Blacksburg Whitethorne Farm Land Prep: disked Planted: May 2, 2003 Harvested: October 30, 2003 Pesticide: 4.4 lb Force 3G at planting; 1.5 lb Atrazine + 1 lb Simazine lb Partner preplant incorporated April 30, 2003 Fertilizer: 2.5 tons lime preplant incorporated April 29, gal S + micronutrients at planting + 90 lb N using 30% UAN sidedressed July 9, 2003 Plot Size: Soil Type: Cooperator: 2 rows 25' x 30" 4 replications Hayter J. Wooge Blackstone Southern Piedmont Agricultural Research & Extension Center Planted: April 29, 2003 Harvested: October 1, 2003 Pesticide: 1.5 qt Bladex 4L + 1 qt Dual Magnum April 29, 2003 Fertilizer: 1000 lb preplant incorporated April 4, gal S + micronutrients at planting lb N June 10, 2003 Plot Size: 2 rows 25' x 30" 4 replications Soil Type: Durham Cooperators: W. B. Wilkinson, R. R. Wilmouth H olland Land Prep: Tidewater Agricultural Research & Extension Center rip-stripped (2) 18 April 3, 2003; disked (2) April 4 and 24, 2003 Planted: April 30, 2003 Harvested: September 15, 2003 Pesticide: 3.5 pt Guardsman preplant incorporated April 25, lb Force 3G at planting Fertilizer: 300 lb March 19, units N April 11, gal S + micronutrients at planting units N using UAN sidedressed June 5, 2003 Plot Size: Soil Type: Cooperators: 2 rows 35' x 30" 4 replications Eunola, Uchee, and Nansemond Bobby Ashburn Planted: May 14-15, 2003 Harvested: September 29 - October 2, 2003 Pesticide: 2.5 qt Lumax 4L preplant incorporated May 14, 2003 Fertilizer: 1400 lb May 14, lb N sidedressed June 30, 2003 Plot Size: 1 row 30' x 30" 4 replications Soil Type: Davidson silty clay loam Cooperators: D. E. Starner Washington Johnson Farm County Planted: May 14, 2003 Harvested: October 24, 2003 Pesticide: 4.4 lb Force 3G at planting + Lomax Fertilizer: 170N + 75P + 200K preplant + 20 gal S + micronutrients at planting units sidedressed Plot Size: 2 rows 25' x 30" 4 replications Cooperators: Phil Blevins, David Johnson Shenandoah Phillips Farm Valley Planted: May 15, 2003 Harvested: October 23, 2003 Pesticide: 4.4 lb Force 3G at planting Fertilizer: 20 lb N from previous dairy manure + 60 lb N from 2 tons of poultry litter applied in the spring + 60 lb N applied in pre-emergence herbicide + 20 gal S + micronutrients at planting + 50 lb N sidedressed Plot Size: 2 rows 25' x 30" 4 replications Cooperators: Chris Lawrence and the Phillips farm Mt Holly (dry) Virginia Crop Improvement Association Foundation Seed Farm Land Prep: ripped, worked and planted conventionally Planted: April 23, 2003 Harvested: October 14, 2003 Pesticide: 2 qt Bicep II Magnum + 1 qt Princep preplant incorporated lb Force 3G at planting Fertilizer: 50 lb N + 40 lb P + 60 lb K preplant incorporated + 20 gal S + micronutrients at planting + 90 lb N sidedressed June 16, 2003 Plot Size: 2 rows 25' x 30" 4 replications Soil Type: State fine sandy loam Cooperator: Bruce Beahm Mt Holly (irr) Virginia Crop Improvement Association Foundation Seed Farm Land Prep: ripped, worked and planted conventionally Planted: April 24, 2003 Harvested: September 17, 2003 Pesticide: 2 qt Bicep II Magnum + 1 qt Princep preplant incorporated lb Force 3G at planting Fertilizer: 50 lb N + 50 lb P + 80 lb K preplant incorporated + 20 gal S + micronutrients at planting; 45 lb N + 6 lb S June 6, lb N + 5 lb S June 24, lb N July 1, 2003 through fertigation Irrigation: (8.6 total) 0.15 June June July July July 17 Plot Size: 2 rows 25' x 30" 4 replications Soil Type: State fine sandy loam Cooperator: Bruce Beahm Orange Northern Piedmont Agricultural Research & Extension Center 3

6 Table RELATIVE YIELD* of corn hybrids entered in three or more locations. Very Early Maturity Mt Holly Mt Holly Black- Blacks- Wash- Brand Hybrid Holland Dryland Irrigated stone Orange Augusta burg ington Mean NK N65-M AUGUSTA MID-ATLANTIC MA9094CRW AUGUSTA DOEBLERS HC AUGUSTA AUGUSTA Early Maturity Mt Holly Mt Holly Black- Blacks- Wash- Brand Hybrid Holland Dryland Irrigated stone Orange Augusta burg ington Mean TRISLER BY AUGUSTA 5337CB MID-ATLANTIC MA7130YG TRISLER BY AUGUSTA 5340Bt VIGORO V52Y DEKALB DKC64-11(RR/YGCB) ASGROW RX AUGUSTA DEKALB DKC63-79(YGCB) AUGUSTA SOUTHERN STATES 692Bt ASGROW RX664RR/YG DEKALB DKC60-09(RR/YGCB) TRISLER BY AUGUSTA T-03-19CB PIONEER BRAND 34B T.A. SEEDS EX NK N75-C DEKALB DKC57-84(YGCB) VIGORO V51R TRISLER BY AUGUSTA 5253Bt AUGUSTA AUGUSTA DOEBLERS 643XYG Table 1, continued RELATIVE YIELD* of corn hybrids entered in three or more locations.

7 Early Maturity, continued Mt Holly Mt Holly Black- Blacks- Wash- Brand Hybrid Holland Dryland Irrigated stone Orange Augusta burg ington Mean NK NX AUGUSTA TRISLER BY AUGUSTA 5244RR NK N70-D VIGORO V54C DOEBLERS 649XY AUGUSTA MID-ATLANTIC MA ASGROW RX VIGORO V54R AUGUSTA SOUTHERN STATES DEKALB DKC60-19(RR/YGCB) PIONEER BRAND 34B VIGORO V MID-ATLANTIC MA7131YG MID-ATLANTIC MA8011RR AUGUSTA ASGROW RX DEKALB DKC60-17(RR) VIGORO V54C AUGUSTA Medium Maturity Mt Holly Mt Holly Black- Blacks- Wash- Brand Hybrid Holland Dryland Irrigated stone Orange Augusta burg ington Mean VIGORO V58Y TRISLER BY AUGUSTA T-03-21CB PIONEER BRAND 31G HYTEST HT7711Bt PIONEER BRAND 33M SOUTHERN STATES 842RR PIONEER BRAND 32R HYTEST HT7710Bt/LL NK NX CHEMGRO 7323RRBt

8 VIGORO V VIGORO V AUGUSTA PIONEER BRAND 33J PIONEER BRAND 33V AUGUSTA AUGUSTA AUGUSTA T.A. SEEDS TA TRISLER BY AUGUSTA T-5965RR HYTEST HT DOEBLERS 760DT AUGUSTA Mid-Full Maturity Mt Holly Mt Holly Black- Blacks- Wash- Brand Hybrid Holland Dryland Irrigated stone Orange Augusta burg ington Mean PIONEER BRAND 31G PIONEER BRAND 32D CHEMGRO 7740Bt T.A. SEEDS TA VIGORO V61R * Relative yield is calculated by dividing the yield of a hybrid by the average yield of all hybrids of all maturities at that location. A hybrid with a relative yield of 105 was 5% above the average of all hybrids at that location. The value of 105 is not a yield but a value relative to all other yield values at that location. Relative yields are listed in order of descending mean values.

9 Table 2. Two Year Average RELATIVE YIELD* ( ) of corn hybrids entered in three or more locations each year.* Very Early Maturity # Relative Brand Hybrid Observations Yield NK N65-M AUGUSTA Early Maturity # Relative Brand Hybrid Observations Yield AUGUSTA VIGORO V DOEBLERS 649XY AUGUSTA SOUTHERN STATES 692Bt PIONEER BRAND 34B AUGUSTA ASGROW RX AUGUSTA DEKALB DKC60-19(RR/YG) PIONEER BRAND 34B MID-ATLANTIC MA8011RR VIGORO V54C SOUTHERN STATES MID-ATLANTIC MA AUGUSTA Medium Maturity # Relative Brand Hybrid Observations Yield PIONEER BRAND 31G PIONEER BRAND 33J HYTEST HT VIGORO V PIONEER BRAND 32R DOEBLERS 760DT SOUTHERN STATES 842RR AUGUSTA AUGUSTA Mid-Full Maturity # Relative Brand Hybrid Observations Yield PIONEER BRAND 32D * Relative yield is calculated by dividing the yield of a hybrid by the average yield of all hybrids of all maturities at that location. A hybrid with a relative yield of 105 was 5% above the average of all hybrids at that location. The value of 105 is not a yield but a value relative to all other yield values at that location. Relative yields are listed in order of descending mean values. Table 3. Three Year Average RELATIVE YIELD* (2001, 2002, and 2003) of corn hybrids entered in three or more locations each year.* Early Maturity # Relative Brand Hybrid Observations Yield AUGUSTA VIGORO V AUGUSTA AUGUSTA MID-ATLANTIC MA MID-ATLANTIC MA8011RR PIONEER 34B

10 VIGORO V54C SOUTHERN STATES AUGUSTA Medium Maturity # Relative Brand Hybrid Observations Yield PIONEER 31G PIONEER 32R PIONEER 33J VIGORO V DOEBLERS 760DT AUGUSTA AUGUSTA SOUTHERN STATES 842RR * Relative yield is calculated by dividing the yield of a hybrid by the average yield of all hybrids of all maturities at that location. A hybrid with a relative yield of 105 was 5% above the average of all hybrids at that location. The value of 105 is not a yield but a value relative to all other yield values at that location. Relative yields are listed in order of descending mean values. Table 4. Corn Yields at the Tidewater AREC at HOLLAND, VIRGINIA in Virginia Tech Trials. Very Early Maturity Yield Moist NK N65-M AUGUSTA AUGUSTA MID-ATLANTIC MA9094CRW AUGUSTA DOEBLERS HC AUGUSTA Maturity Average C.V L.S.D. (0.05) Early Maturity Yield Moist TRISLER BY AUGUSTA 5337CB MID-ATLANTIC MA7130YG TRISLER BY AUGUSTA T-03-19CB TRISLER BY AUGUSTA 5340Bt VIGORO V52Y DEKALB DKC AUGUSTA TRISLER BY AUGUSTA 5244RR TRISLER BY AUGUSTA 5253Bt AUGUSTA AUGUSTA VIGORO V51R DOEBLERS 643XYG MID-ATLANTIC MA7131YG MID-ATLANTIC MA NK N70-D VIGORO V54R AUGUSTA AUGUSTA VIGORO V54C MID-ATLANTIC MA8011RR

11 VIGORO V DOEBLERS 649XY AUGUSTA AUGUSTA PIONEER BRAND 34B AUGUSTA NK N75-C VIGORO V54C AUGUSTA NK NX ASGROW RX Maturity Average C.V L.S.D. (0.05) Medium Maturity Yield Moist PIONEER BRAND 31B DEKALB DKC69-71(RR/YGCB) NK N83-Z PIONEER BRAND 31G VIGORO V58Y HYTEST HT7711Bt DEKALB DKC67-60(RR) PIONEER BRAND 32R HYTEST HT7710Bt/LL CHEMGRO 7323RRBt PIONEER BRAND 33M NK NX TRISLER BY AUGUSTA T-03-21CB DEKALB DKC66-80(RR) PIONEER BRAND 33V CHEMGRO AUGUSTA VIGORO V TRISLER BY AUGUSTA T-5965RR AUGUSTA AUGUSTA VIGORO V DOEBLERS 760DT HYTEST HT Maturity Average C.V L.S.D. (0.05) Mid-Full Maturity Yield Moist CHEMGRO 7740Bt PIONEER BRAND 31G VIGORO V61R Maturity Average C.V L.S.D. (0.05) Location Average

12 Table 5. Two-year average corn yields at the Tidewater AREC at HOLLAND, VA in 2002 and Very Early Maturity Yield Moist NK N65-M AUGUSTA Maturity Average C.V L.S.D. (0.05) Early Maturity Yield Moist AUGUSTA AUGUSTA MID-ATLANTIC MA AUGUSTA AUGUSTA MID-ATLANTIC MA8011RR VIGORO V DOEBLERS 649XY PIONEER 34B VIGORO V54C Maturity Average C.V L.S.D. (0.05) Medium Maturity Yield Moist PIONEER 31G PIONEER 32R AUGUSTA HYTEST HT DOEBLERS 760DT VIGORO V Maturity Average C.V L.S.D. (0.05) Location Average Table 6. Three-year average corn yields at the Tidewater AREC in HOLLAND, VA in 2001, 2002, and Early Maturity Yield Moist AUGUSTA VIGORO V VIGORO V54C AUGUSTA MID-ATLANTIC MA8011RR Maturity Average C.V L.S.D. (0.05) Medium Maturity Yield Moist PIONEER BRAND 31G

13 PIONEER BRAND 32R AUGUSTA DOEBLERS 760DT VIGORO V Maturity Average C.V L.S.D. (0.05) Location Average Table 7. Corn Yields under DRYLAND conditions at the Virginia Crop Improvement Foundation Seed Farm at MT HOLLY, VIRGINIA in Virginia Tech Trials. Very Early Maturity Yield Moist Lodging Test Wt AUGUSTA MID-ATLANTIC MA9094CRW AUGUSTA NK N65-M DOEBLERS HC AUGUSTA AUGUSTA Maturity Average C.V L.S.D. (0.05) Early Maturity Yield Moist Lodging Test Wt SOUTHERN STATES 670Bt DEKALB DKC60-09(RR/YGCB) DEKALB DKC64-11(RR/YGCB) AUGUSTA PIONEER BRAND 34B TRISLER BY AUGUSTA 5337CB ASGROW RX664RR/YG TRISLER BY AUGUSTA 5340Bt AUGUSTA ASGROW RX NK N75-C NK NX VIGORO V54R DOEBLERS 749XYG MID-ATLANTIC MA7130YG DEKALB DKC63-79(YGCB) VIGORO V54C MID-ATLANTIC MA T.A. SEEDS EX DOEBLERS 649XY AUGUSTA TRISLER BY AUGUSTA T-03-19CB AUGUSTA ASGROW RX ASGROW RX VIGORO V52Y AUGUSTA VIGORO V SOUTHERN STATES 692Bt SOUTHERN STATES

14 MID-ATLANTIC MA8011RR AUGUSTA TRISLER BY AUGUSTA 5244RR NK N70-D AUGUSTA VIGORO V51R TRISLER BY AUGUSTA 5253Bt PIONEER BRAND 34B DEKALB DKC60-19(RR/YGCB) DEKALB DKC57-84(YGCB) MID-ATLANTIC MA7131YG AUGUSTA DEKALB DKC60-17(RR) AUGUSTA VIGORO V54C Maturity Average C.V L.S.D. (0.05) Medium Maturity Yield Moist Lodging Test Wt TRISLER BY AUGUSTA T-03-21CB PIONEER BRAND 33V PIONEER BRAND 31G NK NX AUGUSTA VIGORO V58Y VIGORO V HYTEST HT7711Bt SOUTHERN STATES 842RR VIGORO V CHEMGRO 7323RRBt TRISLER BY AUGUSTA T-5965RR AUGUSTA PIONEER BRAND 33M SOUTHERN STATES 80779RR AUGUSTA HYTEST HT7710Bt/LL AUGUSTA HYTEST HT AUGUSTA HYTEST HT Maturity Average C.V L.S.D. (0.05) Mid-Full Maturity Yield Moist Lodging Test Wt PIONEER BRAND 31G T.A. SEEDS TA CHEMGRO 7740Bt Maturity Average C.V L.S.D. (0.05) Location Average

15 Table 8. Two-year average corn yields under DRYLAND conditions at the Virginia Crop Improvement Association Foundation Seed Farm at MT HOLLY, VA in 2002 and Very Early Maturity Yield Moist Lodging Test Wt NK N65-M AUGUSTA Maturity Average C.V L.S.D. (0.05) Early Maturity Yield Moist Lodging Test Wt DOEBLERS 649XY PIONEER 34B AUGUSTA ASGROW RX VIGORO V AUGUSTA DEKALB DKC60-19(RR/YGCB) MID-ATLANTIC MA AUGUSTA VIGORO V54C SOUTHERN STATES 692Bt MID-ATLANTIC MA8011RR SOUTHERN STATES PIONEER 34B AUGUSTA AUGUSTA Maturity Average C.V L.S.D. (0.05) Medium Maturity Yield Moist Lodging Test Wt AUGUSTA HYTEST HT PIONEER 31G VIGORO V AUGUSTA SOUTHERN STATES 842RR Maturity Average C.V L.S.D. (0.05) Location Average Table 9. Three-year average corn yields under DRYLAND conditions at the Virginia Crop Improvement Association Foundation Seed Farm in MT HOLLY, VA in 2001, 2002, and Early Maturity Yield Moist Test Wt MID-ATLANTIC MA AUGUSTA AUGUSTA AUGUSTA VIGORO V54C

16 AUGUSTA VIGORO V MID-ATLANTIC MA8011RR Maturity Average C.V L.S.D. (0.05) Medium Maturity Yield Moist Test Wt AUGUSTA PIONEER BRAND 31G VIGORO V AUGUSTA Maturity Average C.V L.S.D. (0.05) Location Average Table 10. Corn Yields under IRRIGATED conditions at the Virginia Crop Improvement Foundation Seed Farm at MT HOLLY, VIRGINIA in Virginia Tech Trials. Very Early Maturity Yield Moist AUGUSTA NK N65-M DOEBLERS HC MID-ATLANTIC MA9094CRW AUGUSTA AUGUSTA AUGUSTA Maturity Average C.V L.S.D. (0.05) Early Maturity Yield Moist NK NX AUGUSTA DEKALB DKC64-11(RR/YGCB) TRISLER BY AUGUSTA 5340Bt ASGROW RX SOUTHERN STATES 692Bt AUGUSTA AUGUSTA NK N75-C DEKALB DKC63-79(YGCB) NK N70-D TRISLER BY AUGUSTA 5337CB AUGUSTA TRISLER BY AUGUSTA 5253Bt PIONEER BRAND 34B MID-ATLANTIC MA7130YG DEKALB DKC60-09(RR/YGCB) DEKALB DKC57-84(YGCB) VIGORO V52Y DOEBLERS 749XYG

17 DEKALB DKC60-17(RR) AUGUSTA AUGUSTA ASGROW RX664RR/YG AUGUSTA SOUTHERN STATES TRISLER BY AUGUSTA T-03-19CB T.A. SEEDS EX DEKALB DKC60-19(RR/YGCB) VIGORO V54R TRISLER BY AUGUSTA 5244RR ASGROW RX VIGORO V54C VIGORO V VIGORO V54C MID-ATLANTIC MA VIGORO V51R ASGROW RX PIONEER BRAND 34B DOEBLERS 649XY AUGUSTA SOUTHERN STATES 670Bt MID-ATLANTIC MA7131YG MID-ATLANTIC MA8011RR AUGUSTA Maturity Average C.V L.S.D. (0.05) Medium Maturity Yield Moist PIONEER BRAND 33M AUGUSTA PIONEER BRAND 31G TRISLER BY AUGUSTA T-03-21CB PIONEER BRAND 33V VIGORO V58Y HYTEST HT7711Bt HYTEST HT7710Bt/LL VIGORO V SOUTHERN STATES 842RR AUGUSTA VIGORO V NK NX HYTEST HT SOUTHERN STATES 80779RR CHEMGRO 7323RRBt AUGUSTA TRISLER BY AUGUSTA T-5965RR AUGUSTA HYTEST HT AUGUSTA Maturity Average C.V L.S.D. (0.05) Mid-Full Maturity Yield Moist

18 PIONEER BRAND 31G CHEMGRO 7740Bt T.A. SEEDS TA Maturity Average C.V L.S.D. (0.05) Location Average Table 11. Two-year average corn yields under IRRIGATED conditions at the Virginia Crop Improvement Association Foundation Seed Farm at MT HOLLY,VA in 2002 and Very Early Maturity Yield Moist NK N65-M AUGUSTA Maturity Average C.V L.S.D. (0.05) Early Maturity Yield Moist SOUTHERN STATES 692Bt AUGUSTA AUGUSTA AUGUSTA PIONEER 34B SOUTHERN STATES ASGROW RX DEKALB DKC60-19(RR/YGCB) PIONEER 34B VIGORO V DOEBLERS 649XY AUGUSTA AUGUSTA VIGORO V54C MID-ATLANTIC MA MID-ATLANTIC MA8011RR Maturity Average C.V L.S.D. (0.05) Medium Maturity Yield Moist PIONEER 31G AUGUSTA HYTEST HT VIGORO V SOUTHERN STATES 842RR AUGUSTA Maturity Average C.V L.S.D. (0.05) Location Average

19 Table 12. Three-year average corn yields under IRRIGATION at the Virginia Crop Improvement Association Foundation Seed Farm in MT HOLLY, VA in 2001, 2002, and Early Maturity Yield Moist AUGUSTA AUGUSTA VIGORO V MID-ATLANTIC MA8011RR AUGUSTA AUGUSTA MID-ATLANTIC MA VIGORO V54C Maturity Average C.V L.S.D. (0.05) Medium Maturity Yield Moist PIONEER BRAND 31G VIGORO V AUGUSTA AUGUSTA Maturity Average C.V L.S.D. (0.05) Location Average Table 13. Corn Yields at the Southern Piedmont AREC at BLACKSTONE, VIRGINIA in Virginia Tech Trials. Very Early Maturity Yield Moist Lodging Test Wt DOEBLERS HC Early Maturity Yield Moist Lodging Test Wt ASGROW RX664RR/YG DEKALB DKC63-79(YGCB) DEKALB DKC57-84(YGCB) ASGROW RX DEKALB DKC60-09(RR/YGCB) DEKALB DKC64-11(RR/YGCB) ASGROW RX ASGROW RX VIGORO V54R DEKALB DKC60-19(RR/YGCB) DOEBLERS 649XY DOEBLERS 643XYG DEKALB DKC60-17(RR) VIGORO V Maturity Average C.V L.S.D. (0.05) Medium Maturity Yield Moist Lodging Test Wt

20 PIONEER BRAND 31G VIGORO V PIONEER BRAND 32R PIONEER BRAND 33V AUGUSTA DOEBLERS 760DT PIONEER BRAND 33J AUGUSTA Maturity Average C.V L.S.D. (0.05) Mid-Full Maturity Yield Moist Lodging Test Wt PIONEER BRAND 31G PIONEER BRAND 32D VIGORO V61R DOEBLERS 877VRR Maturity Average C.V L.S.D. (0.05) Location Average Table 14. Corn Yields at the Northern Piedmont AREC in ORANGE, VIRGINIA in Virginia Tech Trials. Very Early Maturity Yield Moist Lodging Days To Ear Ht % Silk inches MID-ATLANTIC MA9094CRW NK N65-M DOEBLERS HC Maturity Average C.V L.S.D. (0.05) Early Maturity Yield Moist Lodging Days To Ear Ht % Silk inches MID-ATLANTIC MA7130YG VIGORO V52Y VIGORO V51R DOEBLERS 643XYG PIONEER BRAND 34B DOEBLERS 649XY VIGORO V DEKALB DKC64-11(RR/YGCB) T.A. SEEDS EX NK NX NK N75-C MID-ATLANTIC MA8011RR BIO GENE ASGROW RX DEKALB DKC60-19(RR/YGCB) DEKALB DKC57-84(YGCB) NK N70-D MID-ATLANTIC MA7131YG

21 VIGORO V54R DEKALB DKC60-09(RR/YGCB) DEKALB DKC60-17(RR) DEKALB DKC63-79(YGCB) ASGROW RX ASGROW RX664RR/YG SOUTHERN STATES ASGROW RX MID-ATLANTIC MA VIGORO V54C Maturity Average C.V L.S.D. (0.05) Medium Maturity Yield Moist Lodging Days To Ear Ht % Silk inches VIGORO V58Y BIO GENE PIONEER BRAND 31B PIONEER BRAND 33J PIONEER BRAND 33M PIONEER BRAND 31G PIONEER BRAND 32R VIGORO V T.A. SEEDS TA NK NX DOEBLERS 760DT PIONEER BRAND 33V BIO GENE Maturity Average C.V L.S.D. (0.05) Mid-Full Maturity Yield Moist Lodging Days To Ear Ht % Silk inches PIONEER BRAND 32D PIONEER BRAND 31G SOUTHERN STATES 42174RR T.A. SEEDS TA Maturity Average C.V L.S.D. (0.05) Location Average Table 15. Two-year average corn yields at the Northern Piedmont AREC in ORANGE, VA in 2002 and Very Early Maturity Yield Moist Days To Ear Ht Silk inches NK N65-M Early Maturity Yield Moist Days To Ear Ht Silk inches DOEBLERS 649XY PIONEER 34B MID-ATLANTIC MA8011RR

22 SOUTHERN STATES DEKALB DKC60-19(RR/YGCB) ASGROW RX MID-ATLANTIC MA Maturity Average C.V L.S.D. (0.05) Medium Maturity Yield Moist Days To Ear Ht Silk inches PIONEER 33J PIONEER 32R PIONEER 31G DOEBLERS 760DT Maturity Average C.V L.S.D. (0.05) Mid-Full Maturity Yield Moist Days To Ear Ht Silk inches PIONEER 32D Location Average Table 16. Three-year average corn yields at the Northern Piedmont AREC at ORANGE, VA in 2001, 2002, and Early Maturity Yield Moist Days To Ear Ht Silk inches PIONEER BRAND 34B MID-ATLANTIC MA8011RR SOUTHERN STATES MID-ATLANTIC MA Maturity Average C.V L.S.D. (0.05) Medium Maturity Yield Moist Days To Ear Ht Silk inches PIONEER BRAND 33J PIONEER BRAND 31G PIONEER BRAND 32R DOEBLERS 760DT Maturity Average C.V L.S.D. (0.05) Location Average Table 17. Corn Yields at the Phillips Farm in Augusta County, Virginia (SHENANDOAH VALLEY) in Virginia Tech Trials. Very Early Maturity Yield Moist Lodging Test Wt MID-ATLANTIC MA9094CRW DOEBLERS HC

23 Maturity Average C.V L.S.D. (0.05) Early Maturity Yield Moist Lodging Test Wt MID-ATLANTIC MA7130YG DOEBLERS 638XYG SOUTHERN STATES 692Bt DOEBLERS 649XY PIONEER BRAND 34B MID-ATLANTIC MA BIO GENE MID-ATLANTIC MA7131YG VIGORO V54R MID-ATLANTIC MA8011RR VIGORO V54C Maturity Average C.V L.S.D. (0.05) Medium Maturity Yield Moist Lodging Test Wt BIO GENE HYTEST HT7711Bt VIGORO V58Y HYTEST HT7710Bt/LL SOUTHERN STATES 753BTCL PIONEER BRAND 31G HYTEST HT VIGORO V PIONEER BRAND 33J T.A. SEEDS TA DOEBLERS 760DT SOUTHERN STATES 849CL SOUTHERN STATES 842RR BIO GENE PIONEER BRAND 33V Maturity Average C.V L.S.D. (0.05) Mid-Full Maturity Yield Moist Lodging Test Wt PIONEER BRAND 32D T.A. SEEDS TA PIONEER BRAND 31G Maturity Average C.V L.S.D. (0.05) Location Average Table 18. Two-year average corn yields at SHENANDOAH VALLEY, VA in 2002 and Early Maturity Yield Moist Test Wt

24 SOUTHERN STATES 692Bt DOEBLERS 649XY PIONEER 34B MID-ATLANTIC MA MID-ATLANTIC MA8011RR Maturity Average C.V L.S.D. (0.05) Medium Maturity Yield Moist Test Wt PIONEER 33J HYTEST HT DOEBLERS 760DT PIONEER 31G SOUTHERN STATES 842RR Maturity Average C.V L.S.D. (0.05) Mid-Full Maturity Yield Moist Test Wt PIONEER 32D Location Average Table 19. Three-year average corn yields at SHENANDOAH VALLEY, VA in 2001, 2002, and Early Maturity Yield Moist Test Wt MID-ATLANTIC MA PIONEER BRAND 34B MID-ATLANTIC MA8011RR Maturity Average C.V L.S.D. (0.05) Medium Maturity Yield Moist Test Wt PIONEER BRAND 33J DOEBLERS 760DT PIONEER BRAND 31G SOUTHERN STATES 842RR Maturity Average C.V L.S.D. (0.05) Location Average Table 20. Corn Yields at Kentland Farm in BLACKSBURG, VIRGINIA in Virginia Tech Trials. Very Early Maturity Yield Moist Lodging Test Wt DOEBLERS HC Early Maturity Yield Moist Lodging Test Wt

25 VIGORO V54C PIONEER BRAND 34B SOUTHERN STATES VIGORO V54R DOEBLERS 638XYG DOEBLERS 649XY VIGORO V T.A. SEEDS TA Maturity Average C.V L.S.D. (0.05) Medium Maturity Yield Moist Lodging Test Wt SOUTHERN STATES 842RR SOUTHERN STATES 849CL NK N83-Z NK NX VIGORO V58Y PIONEER BRAND 33J T.A. SEEDS TA PIONEER BRAND 33V SOUTHERN STATES 753BTCL DOEBLERS 760DT Maturity Average C.V L.S.D. (0.05) Mid-Full Maturity Yield Moist Lodging Test Wt PIONEER BRAND 32D PIONEER BRAND 31G T.A. SEEDS TA VIGORO V61R Maturity Average C.V L.S.D. (0.05) Location Average Table 21. Two-year average corn yields at Kentland Farm in BLACKSBURG, VA in 2002 and Early Maturity Yield Moist Test Wt PIONEER 34B VIGORO V Maturity Average C.V L.S.D. (0.05) Medium Maturity Yield Moist Test Wt SOUTHERN STATES 842RR PIONEER 33J

26 DOEBLERS 760DT Maturity Average C.V L.S.D. (0.05) Location Average Table 22. Three-year average corn yields at Kentland Farm in BLACKSBURG, VA in 2001, 2002, and Early Maturity Yield Moist Test Wt PIONEER BRAND 34B Medium Maturity Yield Moist Test Wt SOUTHERN STATES 842RR PIONEER BRAND 33J DOEBLERS 760DT Maturity Average C.V L.S.D. (0.05) Location Average Table 23. Corn Yields at the Johnson Farm in WASHINGTON COUNTY, Virginia in Virginia Tech Trials. Very Early Maturity Yield Moist Test Wt DOEBLERS HC Early Maturity Yield Moist Test Wt DOEBLERS 649XY VIGORO V VIGORO V54R VIGORO V54C T.A. SEEDS TA Maturity Average C.V L.S.D. (0.05) Medium Maturity Yield Moist Test Wt VIGORO V58Y PIONEER BRAND 31G DOEBLERS 760DT PIONEER BRAND 33V Maturity Average C.V L.S.D. (0.05) Mid-Full Maturity Yield Moist Test Wt PIONEER BRAND 32D

27 PIONEER BRAND 31G T.A. SEEDS TA DOEBLERS 877VRR VIGORO V61R T.A. SEEDS TA Maturity Average C.V L.S.D. (0.05) Location Average Table 24. Two-year average corn yields in SOUTHWEST VIRGINIA in 2002 (WYTHE COUNTY) and 2003 (WASHINGTON COUNTY). Early Maturity Yield Moist Test Wt VIGORO V DOEBLERS 649XY Maturity Average C.V L.S.D. (0.05) Medium Maturity Yield Moist Test Wt DOEBLERS 760DT Location Average Table 25. Three-year average corn yields in SOUTHWEST VIRGINIA in 2001, 2002 (WYTHE COUNTY), and 2003 (WASHINGTON COUNTY). Medium Maturity Yield Moist Test Wt DOEBLERS 760DT

Southwest Virginia Blacksburg Blackstone Holland

Shenandoah Valley Orange Mt. Holly Southwest Virginia Blacksburg Blackstone Holland Publication 424-031 Revised 2004 INDEX TO VIRGINIA CORN HYBRID AND MANAGEMENT TRIALS 2004 Companies participating in