Re: soybean ?

Posted by JD Seller on August 30, 2015 at 16:22:01 from (208.126.198.123):

In Reply to: soybean ? posted by jon f mn on August 30, 2015 at 14:04:24:

I think seed and row spacing will determine bean height more than population. Then genetics over rule that. Some beans are just taller naturally. I like a medium height soybean plant. Too short an they are pain to combine. Too tall an they will fall over and lodge. As for population I am now at 160K on 30 inch rows. I really like a narrower row than that but I do not have enough acres to justify a good narrow planter or drill. I still like 15 inch row beans they canopy fast and offer better harvesting than straight rowed beans. White mold has never been an issue for me in our fields. I think that where we rotate there is not as much chance for the mold issue.

As for population. In better soils you can go lower than the 150-160K and still have good yields. In poor soils you need to be at least there or even higher to get a better plant coverage to utilize all the nutrients that the poorer ground has.

I will be able Ferrari F 430 to tell you more on this after this harvest. I planted 75 acres of beans on 15 inch rows by doubling back and using non GMO beans at a 200K planting rate. So we will see what we end up with. This is where we always planted when we used public seed. Much of it was saved from certified seed the year before. The other half of this farm is planted with GMO seed on 30 inch rows at 160K populations.

A different note here. We are starting to see weed escapes from Roundup/Glyphosate in the soybeans. So we are having to use more traditional chemicals for weed control. So we are running the numbers to see if the RR beans are worth the extra cost. We have to get the production costs down some how to make money with the lower commodity prices. One way we are looking at is going back to non GMO beans that we can save the majority of our own seed. Also the non GMO premium has not been enough so far to offset the addition weed control cost and the yield drag. This has been with purchased seed too. So If we can get a GMO premium with a public variety that we can save our own seed from then maybe the economics will be better.

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