What are a few Pros & Cons of Petrochemical Fertilisers?

Petrochemical fertilisers include ammonium nitrate, urea, nitric acid and anhydrous ammonia. They’re obtained using natural gas as a source of fuel and hydrogen for chemical reaction to take place; end result is fertiliser. In contrast, chemical fertilisers are convenient and economical source of nitrogen for plants however their use and production is quite expensive. Gardeners