| Autor: |
Adams, William E., Morris, H. D., Dawson, R. N. |
| Zdroj: |
Agronomy Journal; September 1970, Vol. 62 Issue: 5 p655-659, 5p |
| Abstrakt: |
A field experiment was conducted on Cecil sandy loam over a 7‐year period to determine the effect of cropping systems and nitrogen levels on corn (Zea maysL.) yields. Green manure crops and perennial grass or legume sods increased corn yields regardless of the level of N fertilization. Removal of corn stalks did not decrease corn yields when corn was grown continuously with or without annual green manure crops. Alfalfa (Medicago sativaL.) and tall fescue (Festuca arundinaceaSchreb.) were equally effective in sod‐based rotations for corn. Coastal bermudagrass (Cynodon dactylon(L.) Pers.) was slightly less effective in sod‐based rotations because it competed with corn during the growing season. The beneficial effect of sod on corn yields lasted for at least 4 years after the sod was turned. |
| Databáze: |
Supplemental Index |
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