There is not enough information to properly answer this question! I would need to know your location (way more specific than U.S.A or Canada or even Tennessee, U.S.A), your soil nutrient quality, the type of soil you have, what grasses are growing there, what crop or use you or the previous owner had on that part of the land before you put into grass production, things like that. You need to have a soil test done on different locations on your farm to see what nutrients need to be put back into the soil (calcium, phosphorus, nitrates, etc.) to know for sure what proper fertilizer mix to spread onto your hay field. It is ridiculous and utterly foolish to ask a question like this on a site like Answers.com where the advice you will get for "proper" fert mixes are varied in every way imaginable, coming from people all over the world with all sorts of different soils and soil types, whether they really know their soils or only pretend to and "only want to help." Sorry to be so harsh but that's reality and I wish you won't ask anything similar to this question on here again! If you want this question answered, the proper people to ask is your local soils analyst or county extension agent or someone similar if you don't live in the U.S. for info on soil quality and nutrients.
To use natural grass fertilizer, follow the instructions on the product packaging for proper application rates and timing. Generally, you would spread the fertilizer evenly over the lawn using a spreader, water the lawn after application, and avoid mowing for a few days to allow the fertilizer to be absorbed. Make sure to choose a fertilizer that is appropriate for your grass type and the specific needs of your lawn.
philosophers stone+grass=flower
Grass is a mixture.
Fertilizer = Domestic Animal + Grass
I do it all the time. You can actually buy fertilizer, grass seed and mulch mix all in one bag.
Mulching the grass can double as a fertilizer.
No. If the grass is dead it's dead.
Grass fertilization should be done in spring or fall. It is preferable to spread fertilizer before a rain so that it soaks into the soil.
water and fertilizer
The Production Budget for Leaves of Grass was $9,000,000.
You should do this the other way around ... mow it first then apply the fertilizer. Otherwise you are just putting all that fertilizer into the grass catcher of the mower.
Fertilizer should be applied before rain. Fertilizer should always be watered into the soil or it can cause burning to the grass or plants.