An advantage of synthetic agrichemical fertilizer is its rapid availability to the crop plants. This is also somewhat problematic as the soluble nutrients are also lost to the environment rapidly.
In terms of availlability the manures particularly in slurry are next for their nutrient availability and this is followed by composts and biochar.
Using raw manure on a crop like maize can give about 300 KG/ha increase in carbon accrued to the soil called sequestration. In the case of agricultural synthetic ammoniated fertilizer the effect of the fertilizer can lead to crop stimulation but may also reduce the left over soil carbon which is respired based on microbial growth stimulated by fertilization.
Compost which is not so readily available can have a long term sequestration effect which would be a magnitude above the manure effect.
Biochar which is very stablized has perhaps 2 or more longevity increasee.
Biochar is very stimulatory in depleted oxisols and ultisols with issues of toxicity from Aluminum Iron and Manganese.
Agrichemical fertilizers can have toxicity issues from salts and ammonia while the use of compost can be applied directly even to seed and seedlings.
The advantage of comp0st include the reduction of issues of bulk and smell and pathogens compared to raw manures.
From my research and personal experience vermicompost and leaf compost mixed 1 to 5 gives very good results with a broad range of plant species and will stimulate performance ease of use and carbon sequestration.
In enhancing carbon sequestration in agricultural soils, bio compost outperforms chemical fertilizers significantly. Bio compost, derived from organic materials, enriches soil by adding organic matter, supporting microbial activity, and improving soil structure. These factors enhance the soil's carbon storage capacity. In contrast, chemical fertilizers, while providing essential nutrients, lack the ability to contribute substantially to carbon sequestration. They do not add organic matter to the soil, disrupt microbial balance, and can lead to soil acidification, hampering carbon storage. Thus, adopting sustainable practices like incorporating bio compost and reducing reliance on chemical fertilizers is crucial for effective carbon sequestration in agricultural soils.
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