Cereal Chem 54:1034 - 1041.  |  VIEW ARTICLE
Effects of Nitrogen Fertilization on Lysine, Threonine, and Methionine of Hulled and Hull-Less Barley Cultivars.

Y. Pomeranz. Copyright 1977 by the American Association of Cereal Chemists, Inc. 

Three hulled and two hull-less barley cultivars were grown in five environments (which included triplicate field plots from two locations) with zero, optimal, and twice the optimal amount of N-fertilizer. There was an overall linear relation between per cent crude protein of the grains and fertilizer level, but per cent protein showed a significant fertilizer-environment interaction. There was a significant fertilizer-cultivar interaction; increase in per cent protein was much larger in the low-protein hulled cultivars than in the high- protein hull-less barleys. The effect of fertilizer on lysine or the sum of lysine, threonine, and methionine (as per cent of protein) was not the same for all cultivars. No fertilizer-cultivar interaction was detected, however, for the amount of lysine or the sum of lysing, threonine, and methionine in the sample.