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1087 Jamison Rd
Washington Court House, OH 43160
(800) 321-1562
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| library:articles:corn_row_width_and_population_in_michigan 2010/02/22 13:07 | library:articles:corn_row_width_and_population_in_michigan 2010/03/29 15:40 current | ||
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| They found that narrower rows and higher populations improved yields as seen in the following tables. | They found that narrower rows and higher populations improved yields as seen in the following tables. | ||
| ^ Table 1. Effect of row width (average across all variable, dates, and locations) |||| | ^ Table 1. Effect of row width (average across all variable, dates, and locations) |||| | ||
| - | ^ Row width (inches) ^ Yield (bushel/Ac) ^ % Moisture ^ % Lodging | | + | ^ Row width (inches) ^ Yield (bushel/Ac) ^ % Moisture ^ % Lodging | |
| - | | 30 | 177.5 | 19.6 | 1.60 | | + | | 30 | 177.5 | 19.6 | 1.60 | |
| - | | 22 | 181.0 | 19.2 | 1.92 | | + | | 22 | 181.0 | 19.2 | 1.92 | |
| - | | 15 | 184.2 | 19.2 | 1.65 | | + | | 15 | 184.2 | 19.2 | 1.65 | |
| ^ Table 2. Effect of Plant Density (average across all variables, dates, and locations) ||||| | ^ Table 2. Effect of Plant Density (average across all variables, dates, and locations) ||||| | ||
| - | ^ Plant Density (plants/ac) ^ Yield (bushel/ac) ^ % Moisture ^ Test Weight (lbs/bu) ^ % Stalk Lodging | | + | ^ Plant Density (plants/ac) ^ Yield (bushel/ac) ^ % Moisture ^ Test Weight (lbs/bu) ^ % Stalk Lodging | |
| - | | 22,672 | 168.0 | 19.7 | 57.5 | 2.15 | | + | | 22,672 | 168.0 | 19.7 | 57.5 | 2.15 | |
| - | | 26,316 | 177.4 | 19.5 | 57.6 | 2.22 | | + | | 26,316 | 177.4 | 19.5 | 57.6 | 2.22 | |
| - | | 29,555 | 181.5 | 19.4 | 57.7 | 2.21 | | + | | 29,555 | 181.5 | 19.4 | 57.7 | 2.21 | |
| - | | 32,794 | 184.3 | 19.3 | 57.7 | 2.40 | | + | | 32,794 | 184.3 | 19.3 | 57.7 | 2.40 | |
| - | | 36,437 | 186.3 | 19.2 | 57.7 | 2.67 | | + | | 36,437 | 186.3 | 19.2 | 57.7 | 2.67 | |
| Their conclusions were as follows... "Average corn grain yield increased 2 and 4% when row width was narrowed from 76 cm (30 in) to 56 and 38 cm (22 and 15 in respectively) over the 2 yr. and 11 locations of this study. Corn grain harvest moisture decreased by a factor of 2.1 when row width was narrowed similarly. The decrease in grain moisture at harvest was small but statistically significant over the scope of the study and suggests a modest potential savings in grain drying costs with narrow row corn systems. Plant density affected grain yield, moisture, test weight, and stalk lodging. The highest plant density evaluated, 90,000 plants ha<sup>-1</sup> (36,437 plants/a), had the highest grain yield. A plant density x hybrid interaction was observed. Grain moisture decreased for early maturing hybrids as plant density increased, but moisture levels were consistently high across all plant density levels for the later maturing hybrids. A hybrid x row width interaction was not observed, indicating hybrids that yield well in conventional 76 cm (30 in) row systems will also yield well in narrow row systems. Similarly, a plant density x row width interaction was not observed, which suggests the increased yield effect observed with narrow row systems will generally occur across the range of plant densities commonly used by growers in the northern Corn Belt." | Their conclusions were as follows... "Average corn grain yield increased 2 and 4% when row width was narrowed from 76 cm (30 in) to 56 and 38 cm (22 and 15 in respectively) over the 2 yr. and 11 locations of this study. Corn grain harvest moisture decreased by a factor of 2.1 when row width was narrowed similarly. The decrease in grain moisture at harvest was small but statistically significant over the scope of the study and suggests a modest potential savings in grain drying costs with narrow row corn systems. Plant density affected grain yield, moisture, test weight, and stalk lodging. The highest plant density evaluated, 90,000 plants ha<sup>-1</sup> (36,437 plants/a), had the highest grain yield. A plant density x hybrid interaction was observed. Grain moisture decreased for early maturing hybrids as plant density increased, but moisture levels were consistently high across all plant density levels for the later maturing hybrids. A hybrid x row width interaction was not observed, indicating hybrids that yield well in conventional 76 cm (30 in) row systems will also yield well in narrow row systems. Similarly, a plant density x row width interaction was not observed, which suggests the increased yield effect observed with narrow row systems will generally occur across the range of plant densities commonly used by growers in the northern Corn Belt." | ||