Sounds like you are making a compost pile. Microbiology will convert the unavailable nutrients in your mixture into plant available nutrients If you are using all natural ingredients the worm casting will provide the microbiology that feeds on the natural ingredients in your mix. That will provide the nutrients your plants need. There is absolutely no need for chemical fertilizer as this will just kill and or starve the microbiology and eventually show up as nutrient deficiencies or plant disease, mostly they will just leach into the environment. Other bio fertilizers for your mix of soil like some healthy soil gathered from the healthiest part in your yard made into a tea or a handful of a high end finished compost. If you want explosive growth add some alfalfa pellets or make a weed tea out of some powdered moringa this will add the green element or nitrogen that is not in a plant available form for the biology to convert. This is all food for the microbiology. Just a handful of dirt/compost mixed with a couple gallons of good water and a little molasses then let set covered for 3 days, strain and pour onto your soil or foliar feed will add extra microbiology that will in turn feed on your natural potting soil and provide nutrients to your plant. You can water everyday with the biologicals unlike with chemicals. This is what I don’t understand about industrial grown mangos, they are grown in chopped up wood. They only need some biology added which grows stronger plants that can then combat plant pathogens and will receive the correct amount of nutrients naturally. It’s pretty basic, carbon, mineral, biology it’s all that’s needed. No chemical pollutants required. More than 90% of a plants nutrients are supplied by the microbiology. I personally grow everything in pots in 100% finished biodynamic compost (humus), you cannot over water, it doesn’t dry out and nothing ever needs to be added and it doesn’t break down and can be used over and over again. No damping off, no nutrient deficiencies, no disease.