Is there a downside to seeding heavier then the recommended rate other then cost? Also, would it be bad to plant Durana, Red, Crimson clover, and Winter Rye mixed together in the same plot. I just want to try something different. I will be shallow tilling to prepare seed bed.
Thanks,
Todd,
Seeding rates are designed to provide an approximate number of plants per square foot. If you think about how farmers plant corn or soybeans with a planter. They are trying to get precise plant density. The reason is that if they get too many plants too close together, they compete for resources and don't yield as much as plants at a proper density that are not competing. If they plant them too far apart, they won't canopy quickly enough (or not at all) and weeds will get established and compete with them.
When we use a planter, we are putting seeds at a pretty consistent depth with a precise spacing. They pretty much count on a very high germination percentage. Notice that broadcast rates for crops are about 30% higher than drill or planter rates. This is because germination rates will vary greatly. If you till, broadcast, and drag/cultipack, some seeds will be too deep some will be to shallow some won't get enough moisture so a lower percentage will germinate. When surface broadcast and not cultipacked, and even small percentage won't germinate.
The bottom line, when planting cereal and clover, you can vary the rates quite a bit. I'm sure there is a point where you can get to heavy, but you won't really know ahead since conditions vary from year to year. At best broadcast rates are an approximation. Soil types come into play as well.
As for mixing clovers I do it all the time, but if your objective is to establish Durana, I would skip the crimson. I've done it here in VA and my experience is that you are better off without it. The medium red is fine. Here is what happened to me. Crimson acts as a reseeding annual here. So, when I plant it for the fall with Durana, it makes a great fall plot of WR and Crimson but it is really not that much more attractive with the Crimson than without. In the following spring, the Crimson bounces back It is taller than Durana and tends to form pockets. So by the end of that summer I have a field fully of clover. The crimson is in patches and the Durana fills the rest of the field. By fall the Crimson dies out and I have empty patches in the Durana field. The following spring, the Durana takes off from the roots where it is located but there is nothing in the patches. So, summer weeds and grasses take hold in these patches.
I like both Durana and Crimson, but I no longer plant them together. Medium red seems to act differently for me. It is more scattered and comes up later in the spring than Crimson. It does not seem to leave empty patches and the Durana fills in.
Thanks,
Jack