. Challenges in forage and range research. Forage plants; Rangelands. Rod clover plant (left) shows "internal breakdown" disease (dark area in root) ; right, healthy plant. "Internal breakdown," apparently caused by agents other than micro-organisms, is responsible for substantial stand losses. Research To Develop Disease, Insect, and Nematode Resistance Diseases, insects, and nematodes reduce stand den- sity, persistence, yield, and quality of grasses and legumes grown for forage, turf, and seed. Diseases alone reduce the total value of these crops by an esti- mated 11 per
. Challenges in forage and range research. Forage plants; Rangelands. Rod clover plant (left) shows "internal breakdown" disease (dark area in root) ; right, healthy plant. "Internal breakdown," apparently caused by agents other than micro-organisms, is responsible for substantial stand losses. Research To Develop Disease, Insect, and Nematode Resistance Diseases, insects, and nematodes reduce stand den- sity, persistence, yield, and quality of grasses and legumes grown for forage, turf, and seed. Diseases alone reduce the total value of these crops by an esti- mated 11 percent each year. Use of many grasses and legumes is restricted by lack of varieties that are resist- ant to diseases and insects. We have made progress. Development of alfalfa varieties resistant to bacterial wilt and spotted aphid has removed two serious threats to the alfalfa industry. Use of varieties resistant to bacterial wilt has increased returns to farmers by an estimated S100 million a year. Efforts are continuing to develop varieties resistant to the alfalfa weevil and to isolate lines with resistance to other major Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original United States. Agricultural Research Service. Forage and Range Research Branch. Washington, D. C. : Agricultural Research Service, U. S. Dept. of Agriculture
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Keywords: ., bookcentury1900, booksubjectforageplants, booksubjectrangelands
