. Challenges in forage and range research. Forage plants; Rangelands. A range scientist at the Central Plains Experimental Range, Nunn, Colo., obtains herbage yields. Measure- ments of production and estimates of berbage utilization are essential in grazing experiments. Grasses and legumes are evaluated in terms of animal products. Desirable grazing systems vary witb species, varieties, and mixtures of plants and witb classes of live- stock. To increase the efficiency and competitiveness of do- mestic seed production, we need better information on— • Controlling diseases and insects that attac
. Challenges in forage and range research. Forage plants; Rangelands. A range scientist at the Central Plains Experimental Range, Nunn, Colo., obtains herbage yields. Measure- ments of production and estimates of berbage utilization are essential in grazing experiments. Grasses and legumes are evaluated in terms of animal products. Desirable grazing systems vary witb species, varieties, and mixtures of plants and witb classes of live- stock. To increase the efficiency and competitiveness of do- mestic seed production, we need better information on— • Controlling diseases and insects that attack seed crops. • Improving germination and purity of chaffy-seeded species. • Identifying genetic and environmental factors that control the amount and time of flowering. • Determining factors that limit pollination, includ- ing nectar production and quality and attractive- ness to insect pollinators. • Characterizing varieties and species as to pollen production, distribution, and viability. • Improving isolation standards for wind- and in- sect-pollinated species. • Developing effective cultural, management, and disease control practices for seed crops. • Finding effective procedures for maintaining and restoring the productivity of old seed fields. • Eliminating contamination when replacing seed fields with new varieties of the same species. • Determining the effect of climatic factors on genetic changes within varieties. Research To Develop Better Grazing and Management Systems Half of the land in the United States—a billion acres—is grazing land (pasture and range). In the Great Plains, more than half the land is used only for grazing. In the southeastern States, more than 100 million acres of woodland and range is used for grazing. Better grazing and management systems will result in more efficient use of feed resources, increased animal gains, and improved reproduction rates. Better man- agement will reduce deterioration of seeded pasture and ran
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Keywords: ., bookcentury1900, booksubjectforageplants, booksubjectrangelands
