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<blockquote data-quote="franklin" data-source="post: 1885088" data-attributes="member: 1118"><p>In terms of NPK, or the magic gubbins? </p><p></p><p>I am expected by the landlord to replace my P&K, and this is done in two ways. MAP is applied pre-OSR when I am inclined to grow the filth. That would be in the oder of 30kgN and 2 or 3 years worth of P. Other times I use fibrophos to replace P&K, and would normally apply two or three years worth at once. Why? Well, its cheap. Yes, it has other nutrients in, but more about that later.</p><p></p><p>The aim is to keep the soil pretty happy. I do a lot of tissue testing. And typically I have found that winter OSR will be short in phosphate in autumn, hence the MAP. Two of my fields are former river bed, and these suffer from excessive sodium and iron. Then in spring all the plants have shown chronic lack of potash, so they get a foliar spray at each T timing. Typically through spring we will see deficiences of K, copper, zinc. All wheats get copper through the season. </p><p></p><p>Must say that in none of these instances have I seen an economic response from any foliar sprays. No response from spring applied granular K. Very little response from big dollops of P in the OSR seedbed. I think this is in part due to the nature of a plant - if it is deficient in K at peak uptake, and you put some K on, then it will grow more and hence still be deficient in K. So it's really just fluff around the edges. We are starting to analyse the actual harvested grain for nutrients as that's where the major issues ought show. </p><p></p><p>But its well know that you cant polish a shyte. If I had £20/ac to spend on better nutrition, I would spend the lot for the whole farm on redraining a couple of fields. It's only when the rest is right I reckon it is even worth looking at the P&K and that before the muck. The one foliar I would use without question is copper on milling wheats. </p><p></p><p>Had some cracking yields from a field this year. Soil tests will say there is not a right lot in them to get excited about. No idea what I did there - probably just luck as usual.</p></blockquote><p></p>
[QUOTE="franklin, post: 1885088, member: 1118"] In terms of NPK, or the magic gubbins? I am expected by the landlord to replace my P&K, and this is done in two ways. MAP is applied pre-OSR when I am inclined to grow the filth. That would be in the oder of 30kgN and 2 or 3 years worth of P. Other times I use fibrophos to replace P&K, and would normally apply two or three years worth at once. Why? Well, its cheap. Yes, it has other nutrients in, but more about that later. The aim is to keep the soil pretty happy. I do a lot of tissue testing. And typically I have found that winter OSR will be short in phosphate in autumn, hence the MAP. Two of my fields are former river bed, and these suffer from excessive sodium and iron. Then in spring all the plants have shown chronic lack of potash, so they get a foliar spray at each T timing. Typically through spring we will see deficiences of K, copper, zinc. All wheats get copper through the season. Must say that in none of these instances have I seen an economic response from any foliar sprays. No response from spring applied granular K. Very little response from big dollops of P in the OSR seedbed. I think this is in part due to the nature of a plant - if it is deficient in K at peak uptake, and you put some K on, then it will grow more and hence still be deficient in K. So it's really just fluff around the edges. We are starting to analyse the actual harvested grain for nutrients as that's where the major issues ought show. But its well know that you cant polish a shyte. If I had £20/ac to spend on better nutrition, I would spend the lot for the whole farm on redraining a couple of fields. It's only when the rest is right I reckon it is even worth looking at the P&K and that before the muck. The one foliar I would use without question is copper on milling wheats. Had some cracking yields from a field this year. Soil tests will say there is not a right lot in them to get excited about. No idea what I did there - probably just luck as usual. [/QUOTE]
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