Bar graph with the number 0.1, 0.2, 0.3, 0.4
and 0.5 listed from bottom to top along the left side of the graph. %S is the
title of the numbers. From left to right along the bottom of the graph 0 is below
the first pair of bars, K only is below the second pair of bars, Ele 50 lb S/ac
is below the third pair of bars, Ele 100 lb S/ac is below the fourth pair of bars
and K2S04 50 lb S/ac is below the fifth pair of bars. The first of each of the
pairs of bars is checkered. The second bar is solid. A horizontal line is draw
across the bars between the 0.2 level and 0.3 level called Critical Concentration.
A red R is located on the x axis at the 0.2 level. A red NR is located on the
x axis at the 0.3 level. A downward arrow points to the first of the fifth pair
of bars with the words More S in 1st cut with sulphate of potash.
to Validating Sulphur Rates and Sources for Alfalfa in Ontario