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Arable Farming
Cropping
What's your preferred trace element mix?
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<blockquote data-quote="Brisel" data-source="post: 7406832" data-attributes="member: 166"><p>I've done more comprehensive soil tests and plant tissue tests in the past. Boron always showed up as low. Manganese - not so often though I know the risk from previous regular clinical symptoms at certain times of the year on certain soil types. Potassium always came up as low in tissue tests in March/April but I do wonder whether that's just the rapid biomass gain using K as fast as it can be mobilised. Magnesium deficiency showed up later on from late stem extension onwards. Copper in spring barley on high pH soils. </p><p></p><p>The simple answer for me was to make sure brassicas get boron, cereals get manganese in early spring and magnesium with flag & ear sprays. I try and apply fresh K each season too. That was on chalk soil. I'm on clay now & they use manganese only.</p><p></p><p>I do remember John Selwyn standing in a hole (he did that for a living for a long time!) and saying, "if your soil is healthy and well structured, you don't need trace elements other than manganese occasionally and copper on some cereals on chalk soils."</p><p></p><p>1 litre (150 grammes/ha) of manganese is less than 50p from an IBC. Why wouldn't you if you'd seen deficiency before? Start applying several with every tank load it soon starts to add up, especially when it doesn't mix with certain herbicides. CMPP/mecoprop and MnSO4 chelate is a classic example of 2 products you only put together once!</p></blockquote><p></p>
[QUOTE="Brisel, post: 7406832, member: 166"] I've done more comprehensive soil tests and plant tissue tests in the past. Boron always showed up as low. Manganese - not so often though I know the risk from previous regular clinical symptoms at certain times of the year on certain soil types. Potassium always came up as low in tissue tests in March/April but I do wonder whether that's just the rapid biomass gain using K as fast as it can be mobilised. Magnesium deficiency showed up later on from late stem extension onwards. Copper in spring barley on high pH soils. The simple answer for me was to make sure brassicas get boron, cereals get manganese in early spring and magnesium with flag & ear sprays. I try and apply fresh K each season too. That was on chalk soil. I'm on clay now & they use manganese only. I do remember John Selwyn standing in a hole (he did that for a living for a long time!) and saying, "if your soil is healthy and well structured, you don't need trace elements other than manganese occasionally and copper on some cereals on chalk soils." 1 litre (150 grammes/ha) of manganese is less than 50p from an IBC. Why wouldn't you if you'd seen deficiency before? Start applying several with every tank load it soon starts to add up, especially when it doesn't mix with certain herbicides. CMPP/mecoprop and MnSO4 chelate is a classic example of 2 products you only put together once! [/QUOTE]
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What's your preferred trace element mix?
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