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Arable Farming
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Maize
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<blockquote data-quote="ollie989898" data-source="post: 9150208" data-attributes="member: 54866"><p>The problem with soil phosphate is that it can be difficult for the young plants to find as it's availability is affected by cold/wet soils and it isn't helped by poor seed beds, either.</p><p></p><p>If someone has high P and K indices then really they probably shouldn't be putting any more dung or manure on. The modest amount in 50kg/acre of DAP will be more than taken off by the crop, although I would agree with the comments in another thread that RB209 is hopelessly out of date and if you want a classic example of this then maize would be the crop where RB209 is even weaker.</p><p></p><p>Good broad spectrum soil test results will show up and potential nutrient deficiencies but many of these are usually offset by a good seed bed and the fact that maize can root so deeply- provided it has found enough phosphate to do so earlier on.</p></blockquote><p></p>
[QUOTE="ollie989898, post: 9150208, member: 54866"] The problem with soil phosphate is that it can be difficult for the young plants to find as it's availability is affected by cold/wet soils and it isn't helped by poor seed beds, either. If someone has high P and K indices then really they probably shouldn't be putting any more dung or manure on. The modest amount in 50kg/acre of DAP will be more than taken off by the crop, although I would agree with the comments in another thread that RB209 is hopelessly out of date and if you want a classic example of this then maize would be the crop where RB209 is even weaker. Good broad spectrum soil test results will show up and potential nutrient deficiencies but many of these are usually offset by a good seed bed and the fact that maize can root so deeply- provided it has found enough phosphate to do so earlier on. [/QUOTE]
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