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Grassland
Introduction to grassland
| Question | Answer |
|---|---|
| Botanical Composition | The range of grasses, plants and other vegetation present |
| Stocking rate | The number of animals that can be stocked on a set of area of land |
| Production levels | The amount of herbage produced by pasture |
| Types of grassland | Rough grazing, permanent pasture and ley |
| % of farmland under grassland | 90% |
| Growth stages | Vegetative, elongation, reproductive |
| Vegetative stage | Leaves (tillers) develop on grass plant |
| Elongation stage | Stem begins to grow |
| Reproductive stage | Seed head develops |
| Growth rate | Slows when entering reproductive stage and yield slows |
| Palatability | How pleasant the grass is to taste |
| Productivity | Measure of the quantity of plant material (herbage) produced by grass |
| Digestibility | Proportion of food that can be broken down and used by the animal compared to amount of food consumed |
| Dry matter (DM) | The matter remaining in a sample after the water has been removed |
| Dry matter digestibility (DMD) | The amount (percentage) of dry matter that can be digested by an animal |
| Dry matter intake (DMI) | The amount of feed an animal consumes excluding its water content |
| 95% of seed sown in ireland | Perennial Ryegrass |
| Perennial Ryegrass | High palatability, productivity and digestibility, high DM production, good tillering ability |
| Tillering | Development of side shoots on a plant |
| Italian Ryegrass | Biennial plant, 20% more herbage than PRG |
| White clover | Fix nitrogen, source of protein, reduced costs and good ground cover |
| Red clover | Highly digestible, high yield in silage, fix nitrogen and tap roots improve aeration and soil structure |
| Heading date | Time when the ear emerges on the grass plant |
| Early heading date | Mid-May (grazing in Spring March/April) |
| Intermediate heading date | Late May (good silage yield in May-July) |
| Late heading date | Early June (silage June-late July) and long term grazing |
| Seed mixture | Combination of a number of different species in a pasture |
| Seed mixtures for grazing | Mix of heading dates to have constant supply of grass |
| Seed mixtures for silage | Heading dates similar, grass growth will be uniform |
Created by:
ac1410
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