GTOHunter ... You may already know this but clovers such as Durana do best in soils with a pH near 6.5 to 7.0. In soils on the acidic side, not so well. Correcting pH is simple and relatively inexpensive. If you have not already you might want to have the soil tested for pH. Now is as good a time as any. As for the 13/13/13 .... the soil test will give you fertilizer recommendations too.

Ours have done OK at about 6.8 pH and 0-10-20 at about 200-300 pounds per acre. A good thing to do is to mow it 2-3 times a year ... high. Say 6" - 8" or so in order to stimulate new growth. This is best done just before a good dose of rain is expected to mitigate the stress. We do use selective herbicides to keep invasive weeds out. This additional expense may not be necessary on your plots but it certainly has been on ours. We've had a heck of a time with Congon grass, bitter weed, and what I call Bull Nettle. I think we are on our way to knocking these down big time.

We have good fields of both Arrow Leaf and Ladino going as well. Fields are healthy, thick and being used heavily, In fact, deer have been on all of our clover fields heavier this spring than past 5-6 years for some reason.