posted 9 years ago
In traditional ag or farming they have a manure spreader. It is a trailer/wagon with a 'spinner' that turns off the drive from the ground wheels. Think of a large spinning lawn fertilizer with a really big hopper. They will spread manure spring or fall depending on what is being grown and weather conditions.
So yes, one can just spread it about as they can. The more even the spread the better the distribution of nutrients, but it is an imperfect science (you are going to have clumps, but the more even the better.) It can be tossed with a pitch fork, slung from the back of a wagon, sifted through a drag harrow, etc... You can do it whenever you like, but some crops don't like too green a manure. Depending on your crop it may be better to let it over winter, so it mellows and does not burn the plants. Myself, I am not a proponent of a field left 'idle'. I think a cover crop every season is a must. Pick a time when you have slack time in your planting rotation, plant a cover crop (green manure), fertilize with your compost, and plant a cover crop right in it. So yes, whenever it is convenient and won't slow the growth of a crop. By fertilizing the cover crop and then mulching the cover crop before next planting, you get the benefit of both manures/compost.
What are you browning in the pasture? What time of year? Can you mulch, then plant a winter clover or annual rye? What are winters like where you are?