Nitrogen Fertilizer Influence on Aflatoxin Contamination of Corn in Louisiana

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• 作者：K. M. Tubajika ; H. J. Mascagni ; Jr. ; K. E. Damann ; and J. S. Russin
• 刊名：Journal of Agricultural and Food Chemistry
• 出版年：1999
• 出版时间：December 1999
• 年：1999
• 卷：47
• 期：12
• 页码：5257 - 5260
• 全文大小：36K
• 年卷期：v.47,no.12(December 1999)
• ISSN：1520-5118

文摘

Studies were conducted in 1997 and 1998 on a Gigger silt loam at the Macon Ridge Research Stationat Winnsboro, LA, to determine the influence of nitrogen (N) rate, timing, and starter nitrogenfertilizer on aflatoxin contamination in corn. Fertilizer N (0, 50, 100, 150, 200, and 250 lb of N/acre),two timings (at planting and six-leaf stage), and starter N fertilizer (a control and 10 lb of N/acreapplied in furrow) were evaluated. Application of starter, N rates, and the interaction of starterwith N timing and N rates significantly affected aflatoxin levels. Rates of 50-250 lb of N/acre were34-43% lower in aflatoxin contamination than plots receiving no N. The application of 10 lb ofN/acre starter reduced the aflatoxin levels by 20% compared to the no-starter control.Keywords: Corn; Aspergillus flavus; nutrition; thin-layer chromatography