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Farm Business
Agricultural Matters
New IPCC Climate Change Mitigation Report coming monday...
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<blockquote data-quote="holwellcourtfarm" data-source="post: 8070088" data-attributes="member: 42914"><p>Agreed.</p><p></p><p>Levels now are over 1/3 more than 150 years ago though. Are you saying that all plants grew much slower then?</p><p></p><p>I suspect atmospheric CO² would have to drop very considerably before it became the limiting issue.</p><p></p><p>Commercial greenhouses are a special case because they optimise every input, not just CO².</p><p></p><p>Also, beyond about 25⁰C most of our temperate plants stop photosynthesis. Rising temperatures threaten crop production here way more unless we all switch to tropical crops....</p></blockquote><p></p>
[QUOTE="holwellcourtfarm, post: 8070088, member: 42914"] Agreed. Levels now are over 1/3 more than 150 years ago though. Are you saying that all plants grew much slower then? I suspect atmospheric CO² would have to drop very considerably before it became the limiting issue. Commercial greenhouses are a special case because they optimise every input, not just CO². Also, beyond about 25⁰C most of our temperate plants stop photosynthesis. Rising temperatures threaten crop production here way more unless we all switch to tropical crops.... [/QUOTE]
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New IPCC Climate Change Mitigation Report coming monday...
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