Ageing Fertilizers are fertilizers derived from vegetable matter (e.g. compost and crop residues),herbs and shrubs matter, flowers excreta, Alovera based extracts, Fruit's decompose section .
Naturally occurring Ageing Fertilizers include In contrast, the majority of fertilizers used in commercial farming are extracted from minerals (e.g., phosphate rock) or produced industrially (e.g., ammonia).
Ageing agriculture, a system of farming, allows for certain fertilizers and amendments and disallows others; that is also distinct from this topic. By many definitions, minerals are separate from organic materials .
Othe greensand (anaerobic marine deposits), some limestones (fossil shell deposits),a precursor to coal, offers no nutritional value to the plants, but improves the soil by aeration and absorbing water. It is sometimes credited as being the most widely use Ageing fertilizer and by volume is the top Ageing amendment.
Processed Ageing fertilizers include compost. Decomposing crop residue (green manure) from prior years is another source of fertility. Other ARS studies have found that algae used to capture nitrogen and phosphorus runoff from agricultural fields can not only prevent water contamination of these nutrients, but also can be used as an Ageing fertilizer. ARS scientists originally developed the "algal turf scrubber" to reduce nutrient runoff and increase quality of water flowing into streams, rivers, and lakes. They found that this nutrient-rich algae, once dried, can be applied to cucumber and corn seedlings and result in growth comparable to that seen using synthetic fertilizers.
As a fertilzer it is most commonly used on non-agricultural crops such as in silviculture or in soil remediation. Use of biosolids in agricultural production is less common, and the National Organic Program of the USDA (NOP) has ruled that biosolids are not permitted in organic food production in the U.S.; while biologic in origin (vs mineral), sludge is unacceptable due to toxic metal accumulation and other factors.
A traditional Ageing fertilizer that is minimally processed.