Leafed-out pecan trees in an orchard with shady and sunny areas underneath showing the light ring around the trees for determining the need for thinning.

Figure 5. Pecan orchard in June during noontime. Note the light ring around the shade cast by each tree.

Leafed-out pecan trees in an orchard with shady and sunny areas underneath showing the light ring around the trees for determining the need for thinning.