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Rape phosphate dressings
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<blockquote data-quote="EmeraldCropSci" data-source="post: 154137" data-attributes="member: 1692"><p>And here you've hit the nail on the head.</p><p></p><p>The fact that plants can absorb any nutrient (and other substances through foliage) is a piece of luck for us - they most certainly didn't evolve to take in nutrients this way!</p><p></p><p>Because of the complex structure of leaves - the inter- and intra- cellular mechanisms for absorption and translocation, as well as the diverse range of complex cuticle wax structures on the surface - it makes it difficult for most compounds to penetrate at all or only with difficulty. (And before anyone mentions it, plants <u>do not</u> absorb nutrients through stomata in any meaningful amounts).</p><p></p><p>This is why fungicide & herbicide manufacturers have put so much effort into developing formulations that will help conduct their active ingredients in to plants and why only a few active ingredients are actually successful.</p><p></p><p>For precisely this reason @[USER=166]Brisel[/USER]'s predecessor had scorch and white layers on leaves. It is also why the majority of foliar applied products are either completely ineffective or only partially effective, despite deficiency being identified.</p><p></p><p>It is also why (IMHO) some crop trials - including those conducted by government bodies - have failed to show a response to micronutrients even when analysis indicates deficiency, because they persist in only trialing simple salts (sulphates, carbonates etc.), which demonstrably have low efficacy. Yes, these will often give a transitory greening effect where crops are noticeably deficient, but this effect is usually superficial, penetrating to only one or two cells deep and much remaining on the surface.</p><p></p><p>It is for this reason that we developed our crop nutrient recommendation system - based on soil <u>and</u> tissue analysis and tailored specifically to each crop/field and growth stage.</p><p></p><p>At the same time we also put significant effort and research into creating nutrition and biostimulant formulations that are rapidly absorbed by the leaf and conducted into the phloem & xylem for transport/translocation to the growing points, as there is no point making recommendations if the products you apply don't work.</p></blockquote><p></p>
[QUOTE="EmeraldCropSci, post: 154137, member: 1692"] And here you've hit the nail on the head. The fact that plants can absorb any nutrient (and other substances through foliage) is a piece of luck for us - they most certainly didn't evolve to take in nutrients this way! Because of the complex structure of leaves - the inter- and intra- cellular mechanisms for absorption and translocation, as well as the diverse range of complex cuticle wax structures on the surface - it makes it difficult for most compounds to penetrate at all or only with difficulty. (And before anyone mentions it, plants [U]do not[/U] absorb nutrients through stomata in any meaningful amounts). This is why fungicide & herbicide manufacturers have put so much effort into developing formulations that will help conduct their active ingredients in to plants and why only a few active ingredients are actually successful. For precisely this reason @[USER=166]Brisel[/USER]'s predecessor had scorch and white layers on leaves. It is also why the majority of foliar applied products are either completely ineffective or only partially effective, despite deficiency being identified. It is also why (IMHO) some crop trials - including those conducted by government bodies - have failed to show a response to micronutrients even when analysis indicates deficiency, because they persist in only trialing simple salts (sulphates, carbonates etc.), which demonstrably have low efficacy. Yes, these will often give a transitory greening effect where crops are noticeably deficient, but this effect is usually superficial, penetrating to only one or two cells deep and much remaining on the surface. It is for this reason that we developed our crop nutrient recommendation system - based on soil [U]and[/U] tissue analysis and tailored specifically to each crop/field and growth stage. At the same time we also put significant effort and research into creating nutrition and biostimulant formulations that are rapidly absorbed by the leaf and conducted into the phloem & xylem for transport/translocation to the growing points, as there is no point making recommendations if the products you apply don't work. [/QUOTE]
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