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Protein and amino acid composition of maize grain as influenced by variety and fertility

✍ Scribed by D. R. Keeney

Publisher
John Wiley and Sons
Year
1970
Tongue
English
Weight
289 KB
Volume
21
Category
Article
ISSN
0022-5142

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✦ Synopsis

Abstract

The protein and amino acid composition of maize grain from four Wisconsin single‐cross hybrids grown on plots treated with 200 kg/ha of N or 200 kg/ha of N and 278 kg/ha of K fertiliser was determined. The yield increase due to N fertiliser was large, but K increased the yield of only one variety because of the adequate level of available K in the soil of the plot area. Little variation was found among varieties with respect to amino acid composition of the protein. The average protein concentration in maize grain was 7.0,7.7 and 8.4% with the control, N and N‐K treatments respectively. The results obtained indicated that the protein increase was due in large part to an increase in zein. The concentration in the maize grain of all essential amino acids, except methionine, was highest in the grain from the balanced N‐K fertilizer treatment.

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