Vermicomposting (VC) is a simple and effective technique to reprocess of agricultural waste, city garbage and kitchen waste along with bioconversion of organic waste materials into nutritious compost by earthworm action. VC technology involves the bio- conversion of organic waste into vermicasts, vermiwash utilizing earthworms . These earthworms feed on the waste and their gut act as the bioreactor where the vermicasts are produced. These vermicasts are also termed VC and are rich in NPK and micronutrients . Consequence of these VC on plant growth is well reported but mostly it used as a main source of ‘N’ and ‘P’ is a significant nutrient as a part of some key plant structural components and worked as catalysis in the change of numerous key of biochemical reactions in plants.

While the FYM The manure The mixture of cattle dung and urine-soaked litter directly taken to the manure pit and time taken about 5-6 month. Microbial numbers (bacteria, spore-forming bacteria, actinomycetes, and fungi) the largest in the farmyard manure plot are evolved in FYM. Considerable amount of N in FYM is lost during preparation and storage mainly as NH3volatilisation and or NO3 leaching. The values normally reported as dry equivalent values and there was only superficial moisture removed.

https://www.researchgate.net/post/Why-vermicompost-contain-total-NPK-higher-than-farmyard-manure#:~:text=Total%20nutrient%20content%20of%20vermicompost,mass%20reduction%20and%20nutrient%20losses.&text=These%20two%20differences%20in%20vermicompost,total%20nutrient%20content%20of%20vermicompost.

@ Amarjeet, vermicompost is a earthworm castings that are rich in N, P, K, Fe, S, and Ca than FYM. Moreover vermicompost have greater diversity and activity of microorganisms than FYM, therefore, they have the ability to mobilize more native nutrients FYM.

Vermicompost is the excreta of earthworm, which is rich in humus and all essential plant nutrients. Earthworms eat cow dung or farm yard manure along with other farm wastes and pass it through their body and in the process convert it into vermicompost. Nutrient content is depending upon the type of organic waste feed to the earthworms.

It depends from organisms. They produced more nutrients. But structure of the soil after application can be different and 1 year later can have less nutrients. Ful cycle is needed.

Vermicompost (vermi-compost) is the product of the decomposition process using various species of worms, usually red wigglers, white worms, and other earthworms, to create a mixture of decomposing vegetable or food waste, bedding materials, and vermicast. This process is called vermicomposting, while the rearing of worms for this purpose is called vermiculture.

Vermicast (also called worm castings, worm humus, worm manure, or worm faeces) is the end-product of the breakdown of organic matter by earthworms.These castings have been shown to contain reduced levels of contaminants and a higher saturation of nutrients than the organic materials before vermicomposting.

Vermicompost contains water-soluble nutrients and is an excellent, nutrient-rich organic fertilizer and soil conditioner. It is used in farming and small scale sustainable, organic farming.

Vermicomposting can also be applied for treatment of sewage. A variation of the process is vermifiltration (or vermidigestion) which is used to remove organic matter, pathogens and oxygen demand from wastewater or directly from blackwater of flush toilets.

Raw material used in preparation of vermicompost plays an important role in its final content of NPK. VC technology converts organic waste into vermicast and vermiwash using earthworms.Vermicast contains NPK. Addition of nitrogenous excretary material, enhanced N mineralization and high microbial diversity result in improved nutrient transformation, resulting in high NPK content of VC.Worm casting contain worm mucus, which does not allow the nutrients being flushed away with first watering and holds moisture better than plant soil.

Vermicompost is a kind of refined substances obtained as the excreta of earthworm resulting after their (earthworm) digestion by eating/feeding cow dung or other organic substances. In this process, the cow dung or other substances are passing through the digestion system of an animal like earthworm where many biochemical/biological reactions are taken place involving different kinds of enzymes/microbes, which may play key role to improve the concentration of various nutrient elements like NPK etc. Alternatively, the process of FYM doesn't need to pass them through any animal.

Vermicompost is a material coming from the excreta of earthworms and or the end product after eating organic substances feed to it. It is an element full of NPK that helps improve the fertility of soil which will boost production.

Because vermicompost is a product from the remnants of worms that feed on various organic materials that contain various nutrients such as kitchen waste, household and farm waste.

Two major species of earthworm Viz. Eisenia foetida and Eudriculus eugenia is being utilized for vermicompost preparation since many years..after consuming all the organic matter, there is release of CAsT by these worms which shows possible utility for improving nutrient content resulting from secretion and production of many more substances like enzymes, vitamins, minerals, organic enriched constituents