Italian ryegrass can be classified as an invasive weed, livestock forage or an annual grass. It is commonly used to prevent erosion around new construction while perennial grass is established. Italian ryegrass requires nutrient-rich, well-drained soil. The addition of liquefied manure when its seeds are sown encourages faster growth and early maturation.
Prepare the soil for planting. Till the yard to break up clumps of soil. Cover the yard with a 2-inch layer of compost and a 1-inch layer of sand, and till into the soil. Dust the yard with a thin layer of lime. Till the lime into the soil. Rake the soil to evenly distribute it.
Fill the drop spreader with grass seed. Walk slowly to evenly cover the yard with grass seed. Fifteen to twenty pounds of seed should sufficiently cover 1 acre of yard. Lightly rake soil to cover seeds with a quarter-inch of soil. Cover the yard with a 3- to 4-inch layer of straw.
Fill the hose-end spray pump with liquefied manure. Attach the pump to the garden hose and adjust the setting to 3 tbsp. per gallon. Spray the yard evenly with the manure and water mixture, soaking the ground. Apply liquefied manure once every two weeks until the grass has established a root system.