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Agronomy Journal Abstract -

Yield and Quality of Corn Silage as Influenced by Harvest Height1


This article in AJ

  1. Vol. 61 No. 3, p. 468-470
    Received: Nov 23, 1968

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  1. D. G. Cummins and
  2. R. E. Burns2



Yield and quality variations of corn silage associated with different harvest heights, and the yield and quality contributions of various plant segments below the ear were determined over a 3-year period, 1966-68, at Experiment. Ga. An increase in harvest height from 15 to 90 cm from the soil level decreased forage yields from 13.7 to 11.2 mt/ha, while in vitro dry matter digestibility (IVDMD) increased from 45.1 to 51.1%. The IVDMD for 15-cm plant increments increased from 26.0% for the 15-30 cm portion to 34.7% for the 75-90 cm portion below ear. Harvested digestible dry matter (IVDMD ✕ forage yields) was 6.0, 6.0, and 5.9 mt/ha for the 15-, 45-, and 90-cm heights, respectively. Although, total yields decreased with increased harvest height the increase in quality offset this loss in terms of harvested digestible dry matter.

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