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1. Alfalfa Yields vary with potassium fertilization and soils . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 2. Daily productions per animal increases as AP per unit of land area increases . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 3. As unutilized cool season grasses grow from leafy to stemmy stages, dramatic increases in dry matter yields are accompanied by increases in cell wall materials and decreases in protein and nonstructural carbohydrates . . . . . . . . . . . . . . . . . . 10 4. When perennial grasses or legumes grow from leafy to bloom growth stages, protein and mineral contents decline dramatically with leafiness . . . . . . . . . . . . . . . . . . . . . . . . . . 11 5. As red clover and Orchardgrass grow from leafy to bloom stages of growth, animal production declines . . . . . . . . . . . . . . . . . 12-13 6. Meat or milk production per animal increases with digestible dry matter intake . . . . . . . . . . . . . . . . . . . . . . . . . 15 7. Morphological characteristics of the four main perennial forage legumes in Virginia . . . . . . . . . . . . . . . . . . . . . . . . . . 17 8. Grazing and utilization methods are related to the morphological characteristics of grasses . . . . . . . . . . . . . . . . . . . 18 9. During winter, dormant alfalfa plants obtain energy from nonstructural carbohydrates in roots and crowns . . . . . . . . . . . . . . . . 20 10. Light interception by forage canopies increases and the plateaus as the leaf area increases . . . . . . . . . . . . . . . . . . . . . . 22 11. Orchardgrass tillers were treated to have low and high nonstructural carbohydrates with each of two leaf area to measure growth potential . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 12. Morphological development of grasses of temperate origin as exemplified with tall fescue . . . . . . . . . . . . . . . . . . . . . . . . 24-25 13. Grazing management controls balance of plants . . . . . . . . . . . . . . . 27 14. After grazing or cutting, new shoots of alfalfa originate from stem bases and crowns near or below the soil . . . . . . . . . . . . . . . 29 15. Overgrazing causes a poor soil cover resulting in water runoff, soil erosion, and poor insulation . . . . . . . . . . . . . . . . . . . 31 16. Pasture growth and quality, with AP nearly constant differ with seasons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 17. Controlled stocking based on AP gave higher liveweight gains per animal and per acre than constant stocking . . . . . . . . . . . . . 34
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