
Originally Posted by
paddyempowered
Fertiliser can give barren soil a kickstart into production but incessant over fertilisation using non-organic fertiliser will inevitably leave heavy metal deposits that will damage soil structure. Also, most fertilisers are now oil by-products - not sustainable. In fact almost all non organic fertiliser production is unsustainable.
Your atrocious ignorance of basic chemistry discredits your beliefs even more than clinging to outdated and proven-wrong theories of Malthus. Fertilizers don't "kick-start" soil, they pretty much
replace the soil. It seems you are blissfully unaware of the reality that majority of vegetables are nowadays grown in totally artificial fibres drip-fed with balanced fertilizers, and yes those are not "organic", and shouldn't be as plants need certain elements like phosphorus, potassium and azote which generally are not associated with organic matter. The organic fertilizers are not as good as you seem to think - they become usable only after decomposition - a long and inefficient process, that is why modern agriculture has moved on since the time of pigsty's refuse.
Heavy metals in fertilizers? Do you know what fertilizers are made of? And they are CERTAINLY not produced of "oil", it seems you are confusing fertilizers with plastics.

The "non-organic" fertilizer Nr 1 - ammonium nitrate is very much sustainable as it is produced of air and water. Just for your benefit some base-school chemistry:
N2 + 3H2 -> 2 NH3 Azote makes 78% of atmosphere, and hydrogene can be produced by numerous processes like electrolysis or reformation of coal with water vapour
The same ammonia can be used to produce nitric acid (I will omit the details, you can find them as "Ostwald process" on internet). Finally:
NH3 + HNO3 -> NH4NO3 - and you have ammonia nitrate. Apart from heavy energy usage, there is NOTHING unsustainable about this process.