EFFECTS OF VARIOUS SOIL SUPPLEMENTS AND WATER STRESS ON THE YIELD AND YIELD COMPONENTS OF WHEAT

Abstract

Seven soil supplement products did not affect grain or straw yields, or any of the measured yield components of unstressed wheat or of wheat subjected to an 8-bar soil water stress at early heading. Soil water stress reduced yields by reducing the number of spikes per plant and, to a lesser but significant degree, the number of kernels per spike and the average kernel weight.