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Arable Farming
Cropping
Crop stubble burning
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<blockquote data-quote="ollie989898" data-source="post: 7868348" data-attributes="member: 54866"><p>Fires are not uncommon in nature. Many species actually rely upon them.</p><p></p><p>During a forest fire, low lying scrub is destroyed and bare soil is left. Taller trees may be charred but can remain alive. All the leaf litter and organic residues are gone, meaning the system has a lot of nutrient suddenly made into very available forms. The next result is a near orgy of growth and regeneration as seeds in the soil get a chance to grab some sky that they would otherwise be denied.</p><p></p><p>It is true that stubble fires eliminate trash and weed seeds and partially sterilise a layer of soil. But this is soon recolonised by the organisms that survived.</p><p>There are several very problematic insect pests that are combatted by burning. In areas of the world where pesticides are not available or cannot be applied, this is no small consideration.</p><p></p><p>On a small scale, crop residue burning is probably ok (the carbon was taken from the atmosphere anyway) but on a larger scale, it will cause a big drop in air quality and air pollution has a seriously harmful effect on human health.</p><p></p><p>It does however, need to be weighed against the pollution caused by burning diesel/wearing metal and the need for artificial fertilisers and agrochemicals.</p></blockquote><p></p>
[QUOTE="ollie989898, post: 7868348, member: 54866"] Fires are not uncommon in nature. Many species actually rely upon them. During a forest fire, low lying scrub is destroyed and bare soil is left. Taller trees may be charred but can remain alive. All the leaf litter and organic residues are gone, meaning the system has a lot of nutrient suddenly made into very available forms. The next result is a near orgy of growth and regeneration as seeds in the soil get a chance to grab some sky that they would otherwise be denied. It is true that stubble fires eliminate trash and weed seeds and partially sterilise a layer of soil. But this is soon recolonised by the organisms that survived. There are several very problematic insect pests that are combatted by burning. In areas of the world where pesticides are not available or cannot be applied, this is no small consideration. On a small scale, crop residue burning is probably ok (the carbon was taken from the atmosphere anyway) but on a larger scale, it will cause a big drop in air quality and air pollution has a seriously harmful effect on human health. It does however, need to be weighed against the pollution caused by burning diesel/wearing metal and the need for artificial fertilisers and agrochemicals. [/QUOTE]
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Arable Farming
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Crop stubble burning
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