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Turfgrass Mystery: what's wrong with this picture?

The month is January. The location is Bangkok, Thailand, 13° north of the equator. This is a golf course fairway. But all may not be as it seems. Can you see what is wrong, or at least what is unusual with the fairway in this picture?

Wrong1

Here is a look at the same fairway from another angle. Now do you see what is wrong with the picture?

Wrong2

These are not stripes on the fairway created by a mower. This is a bermudagrass (hybrid Cynodon) fairway with strips of seashore paspalum (Paspalum vaginatum) sodded in at the width of a fairway mower.

This course was in the middle of a conversion from bermudagrass fairways to seashore paspalum fairways, and the work was done in stages, to allow the course to remain open. Half of a fairway was sodded to seashore paspalum, and after that was well-established, the remaining strips of bermudagrass were replaced with seashore paspalum.

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