EFFECTS OF NITROGEN FERTILIZER ON THE YIELD AND PROTEIN CONTENT OF FIVE SPRING WHEATS

Abstract

Six tests were run in 1970 and 1971 to measure the yield and protein response of five diverse wheat cultivars (Triticum aestivum L.) to fertilizer treatments and particularly to nitrogen. The results indicate that complex interactions occur between cultivars, locations, and fertilizer treatments. Of the five cultivars, Pitic 62 and Era showed little yield response to the treatments used but gave the largest increases in protein content. Inia 66 and W.S. 1809 gave the largest increases in yield but showed little increase in protein content. Neepawa gave intermediate responses in both yield and protein content. In general, the heaviest applications of fertilizer did not produce significant increases in yield beyond those produced by the lower applications.