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Document Type

Research

Keywords

Maize, Zea mays L., silage, harvest date, hybrid maturity, plant density, harvest index

Abstract

Effects of plant densities, hybrid maturities, and harvesting dates were studied for production of forage corn (Zea mays L.) in northeastern Iowa. Biomass and grain weights increased with later harvest dates, but stover weight decreased with later harvest dates. Maximum dry weight of biomass was obtained by harvesting late-maturity hybrids at 60 days after flowering (physiolgical maturity) at the highest plant density (72.4 M plants/ha). Harvest indices decreased with higher plant densities, increased with later harvest dates, and decreased for later-maturity hybrids. The three variables studied (plant densities, hybrid maturities, and harvest dates) affected the amount of forage corn produced, but further study is needed to relate quantity of forage produced and silage quality.

Publication Date

June 1984

Journal Title

Proceedings of the Iowa Academy of Science

Volume

91

Issue

2

First Page

76

Last Page

81

Copyright

© Copyright 1984 by the Iowa Academy of Science, Inc

Language

EN

File Format

application/pdf

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