Blood from the gut goes to the liver where the ammonia is converted to urea. If there is more protein than required, blood urea begins to rise. The body, in trying to maintain a constant level of blood urea, excretes any excess in the urine. Click to expand Grass Growth Grass crops for hay and pasture are produced on a wide range of soil types and under variable climatic regimes. Growth in grasses may be divided into two phases - vegetative and reproductive.
Vegetative growth is associated with younger plants and the production of leaves.
No stems are associated with this phase. At boot, the developing seed head of the grass is enclosed in the flag leaf sheath but is not yet visible. The reproductive stage of the grass plant occurs at heading when the seed head emerges from the flag leaf. When pollen is shed, you will notice a powder-like substance on the heads of the grass, this is called the flowering stage. Harvest Time Protein levels of different grasses can be altered by different cutting times.