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:

Strip-Till, Soybean on Corn Study

L. Besemann and H. Eslinger

MATERIALS AND METHODS

Soil:

Embden sandy loam, Hecla sandy loam and Maddock sandy loam; pH=7.0; 1.8% organic matter; soil-N 23 lb/acre; soil-P and soil-K was very high; soil-S was medium.

Previous crop:

2013 – field corn.

Seedbed preparation:

Strip-till May 9 with an Orthman strip-till machine.

Hybrid:

Pioneer 90Y90.

Planting:

May 27 @ 205,000 plants per acre in 30 inch rows.

Plots:

Plots were 37 ft long by 15 ft (6 rows) wide. There were four replications.

Fertilizer:

All plots received 10 lbs N/acre and 40 lbs P2O5/acre as 10-34-0 via strip-till May 9.

Irrigation:

Overhead sprinkler irrigation as needed.

Pest control:

Roundup Power Max (30 oz/acre) + AMS (1 lb/10 gal) June 7 and (20 oz/acre) + AMS (1 lb/10 gal) July 9 for weed control. Endura (8 oz/acre) July 17, July 24 for disease control. Kendo (3 oz/acre) July 17 for insect control.

Harvest:

October 8 with a 4400 JD combine (60 rows 74 feet long, recorded with a weigh wagon).

RESULTS

All soybean plots were combine harvested and bulked. The soybean yield was 55.5 bu/acre at 13.0% moisture with a test weight of 56.6 lbs/bu.

Figure 1. Soybean strip-tilled in 2013 corn ground

Oakes Irrigation Research Site