Chicken Litter
It consists of chicken manure and sawdust. It has high levels of nitrogen and potash. Consider superior for conditioning of soil for harvest than chemical fertilizers.
Compost
It is organic matter decomposed through composting. The organic matter used here can be vegetable and plant waste, animal excreta.
Bone-Meal
It is a mix of ground slaughter house waste products like animal bones. It is a very good source of phosphorous and amino acids. Being organic it is also a slow release fertilizer.