| Oakes Irrigation Research Site | ||||||||||||||
| Carrington Research Extension Center * North Dakota State University | ||||||||||||||
| P.O. Box 531, Oakes, ND 58474-0531, Phone: (701) 742-2744, FAX: (701) 742-2700, E-mail: | Kelly.c.Cooper@ndsu.edu | |||||||||||||
| Soybean Variety Trial | ||||||||||||||
| K. Cooper, L. Besemann and H. Eslinger | ||||||||||||||
| Three soybean variety trials were conducted at the Oakes Irrigation Research Site; a Roundup Ready@ trial, a Liberty Link trial and Conventional Soybean. Results for the Roundup Ready trial are listed in Table 1. Results for the Liberty Link trial are listed in Table 2. Results for the Conventional trial are listed in Table 3. There were thirty-seven varieties in the Roundup Ready trial, eleven varieties in the Liberty Link trial and eight varieties in the Conventional trial. | ||||||||||||||
| MATERIALS AND METHODS | ||||||||||||||
| Soil: | Embden loam and Egeland loam; pH = 6.8; 1.9% organic matter; soil N 31 lbs/acre; soil P and soil K were very high; soil S was medium. | |||||||||||||
| Previous crop: | 2015 – spring wheat. | |||||||||||||
| Seedbed preparation: | Spring conventional tillage. | |||||||||||||
| Planting: | Planted May 17 in 30-inch rows. | |||||||||||||
| Plots: | Plots were 25 ft long by 5 ft (2 rows) wide. The study had four replications. | |||||||||||||
| Fertilizer: | Broadcast 19 lbs N/acre, 50 lbs P2O5/acre, 45 lbs K2O/acre and 10 lbs S/acre as 9‑24‑21-5 April 20. | |||||||||||||
| Irrigation: | Overhead sprinkler irrigation as needed. | |||||||||||||
| Pest control: | All trials received the same treatments. Weed control: Spartan Elite (22 oz/acre) May 19, Select Max (12 oz/acre) + NIS ( 1pt/100gal) June 13. Disease control: Endura (5.5 oz/acre) July 15. | |||||||||||||
| Harvest: | October 1 with a plot combine. | |||||||||||||
| RESULTS | ||||||||||||||
| Yields in the Roundup Ready trial averaged 77.9 bu/acre. Yields in the Liberty Link trial averaged 74.4 bu/acre. | ||||||||||||||
| Table 2. Soybean variety trial (Liberty Link) at the Oakes Irrigation Research Site 2016. | ||||||||||||||
| Seed Yield | ||||||||||||||
| Mat | Days to | Plant | Plant | Seeds/ | Seed | Test | 2-yr. | |||||||
| Brand | Variety | Group1 | PM Mat. | Ht. | Lodge2 | Pound | Oil | Protein | Wt | 2016 | Ave. | |||
| inch | 0 to 9 | % | % | lb/bu | ||||||||||
| Credenz | 525 | 0.5 | 120.0 | 22.0 | 3.8 | 2309 | 19.1 | 34.6 | 56.7 | 57.6 | 66.1 | |||
| Credenz | 601 | 120.0 | 25.0 | 4.0 | 2203 | 18.4 | 33.0 | 57.0 | 52.7 | -- | ||||
| Credenz | 1201 | 127.5 | 24.8 | 8.3 | 2179 | 18.3 | 34.4 | 57.0 | 56.4 | -- | ||||
| Credenz | 1332 | 1.3 | 125.3 | 23.0 | 6.0 | 2289 | 17.7 | 34.6 | 56.6 | 55.0 | 69.1 | |||
| NuTech | 2086L | 0.8 | 124.5 | 27.8 | 5.5 | 2491 | 18.5 | 34.3 | 55.8 | 48.3 | 61.0 | |||
| NuTech | 3115L | 1.1 | 127.3 | 24.3 | 7.0 | 2187 | 18.3 | 34.5 | 57.2 | 61.7 | -- | |||
| Rob-See-Co | RS0828-LL | 0.8 | 123.5 | 26.5 | 3.3 | 2472 | 18.5 | 34.6 | 55.9 | 50.3 | -- | |||
| Rob-See-Co | RS1231-LL | 1.2 | 126.5 | 24.5 | 7.5 | 2193 | 18.5 | 34.2 | 56.8 | 59.0 | -- | |||
| Rob-See-Co | RS1452-LL | 1.4 | 129.0 | 27.0 | 7.0 | 2071 | 18.3 | 33.5 | 56.7 | 66.0 | -- | |||
| Thunder | 5411LLN | 1.1 | 123.0 | 22.3 | 5.8 | 2430 | 19.3 | 34.0 | 55.9 | 50.4 | 62.0 | |||
| Thunder | 5615LLN | 1.5 | 128.5 | 27.3 | 7.5 | 2723 | 18.6 | 33.2 | 56.4 | 51.6 | -- | |||
| Mean | 125.0 | 25.0 | 6.0 | 2322 | 18.5 | 34.1 | 56.5 | 55.4 | -- | |||||
| C.V (%) | 0.5 | 10.6 | 20.4 | 2.4 | 0.7 | 0.7 | 1.1 | 5.1 | -- | |||||
| LSD 0.10 | 0.70 | 3.2 | 1.5 | 67.9 | 0.2 | 0.3 | 0.7 | 3.4 | -- | |||||
| LSD 0.05 | 0.9 | 3.8 | 1.8 | 81.7 | 0.2 | 0.4 | 0.9 | 4.1 | -- | |||||
| Planting Date = May 17; Harvest Date = October 1; Previous Crop = spring wheat | ||||||||||||||
| 1Maturity group based on data provided by seed company. | ||||||||||||||
| Table 1. Roundup Ready@ soybean | Table 2. Liberty Link soybean | Table 3. Conventional soybean | ||||||||||||
| Oakes Irrigation Research Site | ||||||||||||||
| Variety trials | Crop index | Home page | Report 2016 | |||||||||||