EFFECT OF NITROGEN SOURCES AND RATES ON YIELD AND QUALITY OF SILAGE CORN

The objective of this study was to determine the effect of nitrogen (N) application source and rate on silage corn (Zea mays L.) . Urea, ammonium nitrate, and ammonium sulfate were compared at 50, 100, 150, and 200 kg N ha ⁻¹. The application of ammonium sulfate produced the highest plant height, le...

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Bibliographic Details
Published in:Journal of plant nutrition 2014-03, Vol.37 (4), p.611-617
Main Authors: Safdarian, Maryam, Razmjoo, Jamashid, Dehnavi, M. Movahhedi
Format: Article
Language:English
Subjects:
acid detergent fiber
ammonium nitrate
ammonium sulfate
Carbohydrates
corn (Zea mays L.)
corn silage
Crop science
crop yield
feed quality
Fertilizers
forage quality
Grasses
leaf area index
leaves
neutral detergent fiber
Nitrogen
nitrogen application
oils
protein content
urea
urea ammonium nitrate
yield
Zea mays
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Summary:The objective of this study was to determine the effect of nitrogen (N) application source and rate on silage corn (Zea mays L.) . Urea, ammonium nitrate, and ammonium sulfate were compared at 50, 100, 150, and 200 kg N ha ⁻¹. The application of ammonium sulfate produced the highest plant height, leaf area index (LAI), total yield, and stem, leaf, and ear dry matter, followed by ammonium nitrate and urea. However, nitrogen sources had no marked effects on the content of protein, ash, oil, soluble carbohydrates, acid detergent fiber (ADF) and neutral detergent fiber (NDF). As the rate of nitrogen increased plant height, LAI, total yield, and stem, leaf, tassel, and ear dry matters, and protein, ash and oil contents increased while soluble carbohydrates, ADF, and NDF contents decreased. Ammonium sulfate was the most effective N source on production and 200 kg N ha ⁻¹ was the most effective N rate on corn yield and quality.
ISSN:1532-4087
0190-4167
1532-4087
DOI:10.1080/01904167.2013.867986