Fig. 4: Disease damage effect on soybean yield with a fitted boundary line, and yield gap attributed to disease damage.
From: Yield gap decomposition: quantifying factors limiting soybean yield in Southern Africa
a The fitted boundary line, and b the yield gap associated with disease damage in Malawi; likewise for c, d in Zambia; equally for e, f in Mozambique. The scores for disease damage: 1—no sign of disease damage, 2—limited signs of disease damage, 3—moderate signs of disease damage, 4—widespread sign of disease damage. The 1:1 represents when the actual yield is equal to the predicted yield. The points that fall below the 1:1 line indicate yield gap that cannot be explained by disease damage.
