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Arva, Ontario | Les,
Most of our ground is in the pH 7.6-8.0 range. In our case, it is nice dirt, but Phosphorus management is a pain. These pH's will soak up broadcast phosphorus 'til the cows come home, so manure is a great way to get it on perhaps sequestered in the organic form, where it might become available before the soil gets ahold of it. I don't recall seeing alot of dairy barns or feedlots in your neighbourhood, so it boils down to this...
Band your phosphorus requirements on every year, especially the crops that could use most of their P with a small root system. Corn falls into this category, and up here winter wheat is very responsive to banded P in the cool soils in the fall. I cannot speak intelligently to cotton (although intuitively the vigor makes me think it would help), but soybeans will likely be the least responsive to applied P, although they are large users of it.
With our pH's, I've never bought a pound of lime, but watching P go on with minimal impact on the soil test is our albatross.
Luke aka KenSWOnt | |
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Corn on high ph soil?????????
