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Mark Tupman posted an update in the group
10 months agoPerennial & Biodiverse Pastures A good article by incitec pivot sighting the potential negative effects of putting too much soluble N or P in with seeds at planting.
Ivan Pagano5 Comments-
They don’t talk about it in the article but what about the impact on soil biology or the potential disincentive for seedlings to develop healthy relationships with soil biology for future nutritional benefits…
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Indeed 😏
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P-starved plants ostentibly encourage mycorrhizal colonization of their roots by exudation of strigolactone sesquiterpenes that help the fungi to stablish root contact (Akiyama et al.,2005;Bails et al.,2006)
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And this from Dr Christine Jones
“ Experiments such as those at Jena and Rothamsted demonstrate that biomass production is increased with plant diversity. They also show that NPK fertilisers inhibit the formation of an effective rhizosphere microbiome and reduce the percentage of growth promoting bacteria on plant roots – stifling plant health and biomass production.”
She talks about this more also in this webinar https://youtu.be/EX6eoxxoWKI?si=EfhTXciRgOJtjEVV
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Yes, in healthy ecosystems, there isn’t much soluble N and P, full stop. That’s why there was never any nutrient overload problems in the water systems, even in very fertile country.
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