Oakes Irrigation Research Site
Carrington Research Extension Center * North Dakota State University
P.O. Box 531, Oakes, ND 58474-0531, Voice: (701) 742-2189, FAX: (701) 742-2700, email: rgreenla@ndsuext.nodak.edu

COLORED CORN HYBRID PERFORMANCE TRIAL, 2000

Richard Greenland


Result summary

Table 21. Yield and agronomic data for the colored corn performance trial

MATERIALS AND METHODS

Soil: Maddock sandy loam ; pH=7.3; 2.0% organic matter; soil-P and soil-K were medium; soil-S was high.
Previous crops: 1999 - field corn; 1998 - soybean; 1997 - carrot.
Seedbed preparation: Disked on 29 October 1999. Disked April 26. Multiweeded (field cultivated) April 4 and May 1 to incorporate fertilizer and smooth seed bed.
Planting: Planted May 2 in 30-inch rows. Thinned to 28,000 plants/acre on June 26-27.
Plots: 17 ft long by 12.5 ft (5 rows) wide. There were 4 reps.
Fertilizer: On April 4, broadcast 18 lbs N/acre and 20 lbs S/acre as 21-0-0-24. Sprayed 75 lbs N/acre as 28-0-0 on April 28. Knifed in 125 lbs of N/acre as 28-0-0 + N-Serve (1 qt/acre) on June 19.
Irrigation: Overhead sprinkler irrigation as needed.
Pest Control: Weeds were controlled by Frontier + Cypro AT DF (16 oz and 1.6 lbs/acre on May 3), cultivation (June 19 and June 26), and hand weeding. Sprayed Dipel (2 lb/acre on July 3) for European corn borer control.
Harvest: Hand harvested on Sept 27 and Sept 28.

RESULTS

The white corn had yields, etc. similar to the yellow standard hybrids. It was late maturing. The blue corn had lower yields, trouble with lodging, and had a smaller ear size, but was earlier maturing. In order for the blue corn to be a viable crop, the price would have to be at least 1.5 times the price of yellow corn. We also noticed a lot of cross pollination from the blue corn to the white and yellow corn. The blue corn and white corn need to be isolated from corn of other colors.

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Table 21. Yield and agronomic data for the colored corn performance trial at the Oakes Irrigation Research Site, 2000.
Name Kernel color Days to half-silk Grain yield1 Percent moisture Test weight Percent lodging Plant population Ear size
bu/acre % lbs/bu % 1000s/acre oz/ear
2751 BC blue 71 a2 126.7 b 18.4 a 56.3 a 31 b 29.5 4.0 c
34P93 white 85 d 178.1 a 29.8 c 53.5 c 4 a 33.8 4.9 b
NC+ 2919 yellow 83 c 183.0 a 28.9 c 53.8 bc 2 a 31.8 5.3 a
38K07 yellow 76 b 191.4 a 23.7 b 55.0 b 1 a 31.8 5.1 ab
C.V. (%) 1 10 9 1 111 11 5
Probability 0.0001 0.002 0.0003 0.002 0.008 0.43 0.0002

1Yields adjusted to 15% moisture.

2Values in the same column followed by the same letter are not significantly different at the 0.05 level. No significant differences between values in the column without letters.

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