Grass as fertilizers

Something that was done when cutting the yard by someone that's frustrating when raking the yard but I Could see the potential benefits, is using the clean green grass as fertilizers as you see a flourishing backyard its years of getting the dirt the right nutrients to make it flourish so much so you may not want to use artificial fertilizers but basic things such as the grass you cut can be use as fertilizers until it dies ways to use the resources at your disposal.