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South Central Manitoba | So I farm in southern Manitoba where the majority of our soils are high Ph. (7-8.5)
I have been soil sampling the same spots in the same fields now for many years now.
I've been doing samples at the 6",12" and 24" depths. Because of my high Ph soils I've
been using a lot of elemental sulfur products and have always banded most my fertility through
Mid Row banders on my drill. I mainly use NH3 as my nitrogen source and a combination of
the others for the remainder of my nutrients. (depending on price)
So I have 3 fields that the Ph has been slowly dropping to just below 6 (5.9-5.6) in the 6"
depth zone. The 12" depths samples on these 3 fields still always show 6.8 or higher. These
are fields that I own and are some of my better producing ones too.
I'm looking for opinions, at what point would liming be benificial? Very little liming is done in
Manitoba that I'm aware of so finding advice has been difficult. If deeper in the soil has a
higher Ph should I worry about it? Who thinks that I might be losing yields on these fields? I
grow everything from HRS wheats, oats, fall rye, flax, canola, beans, sunflowers, and sometimes
corn. (I use my air drill for banding fertilizer for my row crops.) | |
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At what Ph level does Liming start to Pay?
