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 = 7.3; 2.1% organic matter; soil N 14 lb/acre; soil P was high; soil K was very high; soil S was medium.

Previous crop:

2014 - field corn.

Seedbed preparation:

Strip-till April 27 with an Orthman strip-till machine.

Hybrid:

Dairyland DSR 0404 R2Y.

Planting:

May 22 @ 174,200 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 12 lbs N/acre and 40 lbs P2O5/acre as 10-34-0 via strip-till April 27.

Irrigation:

Overhead sprinkler irrigation as needed.

Pest control:

Roundup (30 oz/acre) + AMS (1 lb/10 gal) June 4 and Roundup (30 oz/acre) + AMS (1 lb/10 gal) + Mon 63410 (1.5 qt/acre) June 23 for weed control.

Remote sensing:

Remote sensing was achieved with an Opti-Sciences CCM 200 Plus chlorophyll meter and a Holland Crop Circle ACS active canopy sensor (normalized difference red edge – NDRE).

Harvest:

September 30 with a JD 4400 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.

Oakes Irrigation Research Site