Publication Date
1989
Description
Renewed emphasis has been placed on crop rotation systems that include a perennial legume. Reasons for this interest include protection of soil from erosion, protection of ground water from nitrate contamination, reduction of soil compaction, and potential for fewer inputs which could reduce costs of grain production. Barnes et al. (1985) reported that a nondormant alfalfa (Medicago sativa L.) selected for increased Nin the root and crown had similar summer herbage yield as adapted dormant cultivars, but provided 62 % more symbiotically fixed N for a following crop than dormant cultivars. If most benefit is to be derived from cultivars with greater N value, specific harvest management strategies must be developed (Hesterman et al., 1986a and 1986b; Sheaffer et al., 1988). Our objectives were to: 1) determine if grain yielf of maize following red clover (Trifolium pratense L.) is influenced by red clover cultivar and to 2) predict the N-rate equivalent contribution of red clover to a succeeding maize crop.
Citation
Johnson, K D.; Greene, D K.; and Cherney, J H., "Contribution of Red Clover to Maize Grain Yields" (2025). IGC Proceedings (1989-2023). 5.
https://uknowledge.uky.edu/igc/1989/session2/5
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Contribution of Red Clover to Maize Grain Yields
Renewed emphasis has been placed on crop rotation systems that include a perennial legume. Reasons for this interest include protection of soil from erosion, protection of ground water from nitrate contamination, reduction of soil compaction, and potential for fewer inputs which could reduce costs of grain production. Barnes et al. (1985) reported that a nondormant alfalfa (Medicago sativa L.) selected for increased Nin the root and crown had similar summer herbage yield as adapted dormant cultivars, but provided 62 % more symbiotically fixed N for a following crop than dormant cultivars. If most benefit is to be derived from cultivars with greater N value, specific harvest management strategies must be developed (Hesterman et al., 1986a and 1986b; Sheaffer et al., 1988). Our objectives were to: 1) determine if grain yielf of maize following red clover (Trifolium pratense L.) is influenced by red clover cultivar and to 2) predict the N-rate equivalent contribution of red clover to a succeeding maize crop.
