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Row Width and Plant Density Effect on Corn Forage Hybrids

Dep. of Crop and Soil Sci., Michigan State Univ., Plant and Soil Sci. Bldg., East Lansing, MI 48824

View larger version (13K): [in a new window]   Fig. 1. Effect of row width and hybrid type on corn forage dry matter (DM) yield. X = full-season leafy hybrid, = nutridense hybrid, = dual-purpose hybrid, and = early maturing leafy hybrid. Data are averaged across plant density levels and replication. Regression equations are full-season leafy, y = -0.0736x + 26.17, R2 = 1.0 and dual purpose, y = -0.0233x + 20.46, R2 = 0.8. The early maturing leafy hybrid and the nutridense hybrid did not have significant regression coefficients. Data are averaged across plant density level, year, and replication.

View larger version (23K): [in a new window]   Fig. 2. Effect of harvest plant density on corn forage (a) dry matter (DM) yield, (b) percent DM, (c) acid detergent fiber (ADF) concentration, (d) neutral detergent fiber (NDF) concentration, (e) DM digestibility concentration, and (f) crude protein (CP) concentration. Data are averaged across hybrid, row width, year, and replication. For regression equations, see Table 3.