The growth difference depicted in the two soybean plants above is the result of flooding damage.Though soybeans have a remarkable ability to survive through flooded soils the lack of oxygen in the soil profile hinders root development and stimies growth

The soybeans to the left were nearly covered with standing water for 3 days.Take note of the soil cracking.As you can see they survived nicely but the lack of oxygen in the soil through this period did reduce their rate of growth.This is evident by the soybeans in the photo above from the same field that did not experience this same flooding.