Studies on the disappearance of nitrate in forage crops during ensiling. III. Effect of additives on the disappearance of nitrate

Masuko, T.; Kubota, M.; Matsumoto, S.; Miyake, Y.; Awaya, K.

Journal of Japanese Society of Grassland Science 26(3): 311-317


ISSN/ISBN: 0447-5933
Accession: 000990747

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Italian ryegrass with a high nitrate content was ensiled in laboratory silos with the addition of 3% glucose, 0.6% urea, 0.6% CaCO3 or 0.6, 0.8 or 1.0% CaCO3 + 3% glucose and were kept at 28 deg C for 3, 7, 15 or 50 days. With CaCO3 or urea alone, 97.9-100% of nitrate disappeared by 50 days but lactic acid content and pH were low and NH3-N content was high. With glucose or glucose + CaCO3 the nitrate content decreased for 3 days then changed little, and lactic acid content and pH were high and NH3-N content was low. The rate of nitrate disappearance was slightly higher with glucose + CaCO3 than with glucose alone.