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Banding P on wheat rate
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Phil N
Posted 9/14/2020 07:50 (#8494665 - in reply to #8493917)
Subject: RE: Banding P on wheat rate


Winter and spring wheat both like high P availability early in the season, even in higher soil test P soils. So placing P in the row provides greater concentrations and yield responses compared to broadcast. Yield responses are often greater in no-till, compared to full tillage however. In no-till, we see on average 5-8 bu/ac yield increases with row placed P, compared to broadcast P at the same rate. Peter Johnsons work I believe shows a 7 bu/ac increase on average (multiple sites) with row placed P, compared the the same amount broadcast.

Nobody I work with uses liquid fertilizer in the row with wheat, on account of cost (Dry P is considerably cheaper than liquid P in all areas I work with, in fact MAP/DAP is often about half the price per pound of P205, compared to liquid 10-34-0 or 11-37-0).

Dry MAP/DAP are more seed-safe than liquid 10-34-0 or 11/37-0.

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