Yield and quality components of corn hybrids for silage grown under New Zealand conditions
1997
Villaver, R.C. | Millner, J. | Hardacre, A. (Department of Science and Technology, Tacloban City, Leyte (Philippines). Leyte Provincial Science and Technology Center)
Corn producers face many interacting factors such as hybrid selection, planting date, fertilization among others for each crop they grow. However, in corn grown for silage consideration of feed quality is also important in establishing its contribution toward meeting an animal's needs. This study was conducted to independently determine the effects of hybrid and plant population on yield and yield components, nutritive value, dry matter partitioning and N percent of corn hybrids grown for silage under New Zealand conditions. Hybrid CF1 achieved the highest (20.046 kg/ha) whole crop DM yield at final harvest while Janna produced the lowest (15,776 kg/ha) yield. The 75,000 plants/ha plant population yielded significantly less than 100,000 and 140,000 plant /ha. There was no difference between the 100,000 and 140,000 plant populations. Dry matter partitioning at final harvest revealed the highest poportion in the grain component, followed by the stem, husk and leaf. Total metabolizable energy (ME) content ranged from 11.3 MJME/kg DM to 10.28 MJME/kg DM. The ME content of CF1 was significantly higher than all other hybrids. There were no significant hybrid differences in whole crop N percent which ranged from 1.07 to 1l16 percent. CF1 was the best performing hybrid, having the highest yield. However, among six commercial corn silage hybrids (CFI) is excluded being a non-commercial hybrid at the time of experiment tested, P3902, Furio, P3585 are the preferred hybrids for early, medium and full season, respectively
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