. Challenges in forage and range research. Forage plants; Rangelands. l! ES3 85 -90 % EZZ3 70 -85 % â â Belo» 70% a ⢠194142 43 44 45 46 47 46 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 YEARS Research at Corvallis, Oreg., on burning to control blind seed disease led to this remarkable improvement in seed quality. Between 1941 and 1949 (before burning to con- trol tbis disease), from 3 to 36 percent of the total perennial ryegrass crop bad a germination below 90 per- cent; afterward, this fraction of the crop ranged from 0 to 9 percent and essentially none of it was as low as 70 percent.
. Challenges in forage and range research. Forage plants; Rangelands. l! ES3 85 -90 % EZZ3 70 -85 % â â Belo» 70% a ⢠194142 43 44 45 46 47 46 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 YEARS Research at Corvallis, Oreg., on burning to control blind seed disease led to this remarkable improvement in seed quality. Between 1941 and 1949 (before burning to con- trol tbis disease), from 3 to 36 percent of the total perennial ryegrass crop bad a germination below 90 per- cent; afterward, this fraction of the crop ranged from 0 to 9 percent and essentially none of it was as low as 70 Fungi carried inside seeds reduce stands and arc a source of infestation to new seed crops. In research at Corvallis. Oreg., aerated steam has shown promise of eliminating these fungi. A, untreated cabbage seed; It, cabbage seed held at 130° F. for 20 minutes. Similar results were obtained with seed held at 130° for 40 and 60 minutes, C and D. in. 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
