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Articles 1 - 6 of 6
Full-Text Articles in Life Sciences
Results Of The Fourth International Winter Wheat Performance Nursery, J. E. Stroike, V. A. Johnson, J. W. Schmidt, P. J. Mattern, K. D. Wilhelmi
Results Of The Fourth International Winter Wheat Performance Nursery, J. E. Stroike, V. A. Johnson, J. W. Schmidt, P. J. Mattern, K. D. Wilhelmi
Historical Research Bulletins of the Nebraska Agricultural Experiment Station
The Fourth International Winter Wheat Performance Nursery was grown in 1972 at 44 sites in 27 countries. Data were reported from 40 sites. The 30 cultivars grown in the nursery included 15 new entries. Twenty-nine cultivars were winter wheats; one was a spring wheat. Data are reported on grain yield, test weight, plant maturity, plant height, lodging, shattering, winter survival, 1000 kernel weight, frost damage, plant diseases, grain protein and lysine content. Two-year mean data summaries also are reported. Supplemental nursery management information is reported for each nursery site.
Structural And Operational Characteristics Of Nebraska And Kansas Feeder-Cattle Growing Operations, J. L. Jorgensen, J. G. Kendrick, A. C. Wellman, J. H. Mccoy, J. W. Koudele, Q. C. Smith
Structural And Operational Characteristics Of Nebraska And Kansas Feeder-Cattle Growing Operations, J. L. Jorgensen, J. G. Kendrick, A. C. Wellman, J. H. Mccoy, J. W. Koudele, Q. C. Smith
Historical Research Bulletins of the Nebraska Agricultural Experiment Station
The beef cattle industry is experiencing a significant increase in demand for feeder cattle. Current difficulties in obtaining sufficient numbers of feeder cattle on a continuing basis have put pressures on the feeder cattle marketing system that did not exist in the past. Feedlot operators, growers (backgrounders), and cow-herd operators are looking for ways and means of improving the system. Innovations are being tested. Those circumstances prompted personnel of the Agricultural Experiment Stations of Kansas and Nebraska to undertake a joint study of cattle marketing under a Regional Research Project.
Nutrient And Energy Composition Of Beef Cattle Feedlot Waste Fractions, C. B. Gilbertson, J. A. Nienaber, J. R. Ellis, T. M. Mccalla, T. J. Klopfenstein, S. D. Farlin
Nutrient And Energy Composition Of Beef Cattle Feedlot Waste Fractions, C. B. Gilbertson, J. A. Nienaber, J. R. Ellis, T. M. Mccalla, T. J. Klopfenstein, S. D. Farlin
Historical Research Bulletins of the Nebraska Agricultural Experiment Station
This bulletin describes nutrient and energy composition of beef cattle waste fractions as a function of the ration roughage level and type of feedlot. Results can be used to plan engineering system approaches and research to develop handling and processing equipment necessary for recovery of the most valuable portion of waste.
Economies Of Size, Volume And Diversification In Retail Grain And Farm Supply Businesses, D. G. Anderson, D. L. Helgeson
Economies Of Size, Volume And Diversification In Retail Grain And Farm Supply Businesses, D. G. Anderson, D. L. Helgeson
Historical Research Bulletins of the Nebraska Agricultural Experiment Station
This study revealed substantial cost savings could accrue to grain and farm supply businesses from plants of larger size. Given sufficient competitive pressures, farmers and consumers might benefit as well from these savings. A continuation of the present trend toward larger, more diverse firms seems likely. Existing firms of sub-optimum size and product structures will probably remain in operation until they are depreciated out. Relatively modest savings from diversified structures make any rapid trend toward one-stop centers unlikely.
The Effect Of 2,4-D, Grazing Management And Nitrogen Fertilizer On Pasture Production, M. K. Mccarty, M. L. Cox, D. L. Linscott
The Effect Of 2,4-D, Grazing Management And Nitrogen Fertilizer On Pasture Production, M. K. Mccarty, M. L. Cox, D. L. Linscott
Historical Research Bulletins of the Nebraska Agricultural Experiment Station
Many pastures in eastern Nebraska and surrounding areas have gradually decreased in productivity. Over a long period of heavy grazing, native warm-season grasses have been largely replaced with Kentucky bluegrass, other less desirable grasses, and broadleaf weeds. A program was started in 1949 to study the effectiveness of protection from grazing in changing the botanical composition and yield of a pasture where the predominant forage was Kentucky bluegrass. Several weed control treatments were included in this experiment to determine if mowing or spraying would hasten the return of more desirable forage. After weed control and differential grazing treatments had been …
A Mode Of Action Of Herbicides: Inhibition Of The Normal Process Of Nitrite Reduction, Lowell Klepper
A Mode Of Action Of Herbicides: Inhibition Of The Normal Process Of Nitrite Reduction, Lowell Klepper
Historical Research Bulletins of the Nebraska Agricultural Experiment Station
Herbicides were shown to interfere in the normal process of enzymatic nitrite reduction by the plant in photosynthetic and nonphotosynthetic plant tissues with little effect on nitrate reduction. This preferential inhibition caused nitrite to accumulate. The occurrence of free nitrite within the plant can help to explain the toxicity symptoms, nastic growth reactions, abnormal metabolism and rapid death due to herbicide action. This blockage of nitrite reduction was shown with all photosynthetic inhibitor herbicides tested and with numerous other herbicides. The effect was demonstrated using an in vivo assay, intact green plants and germinating seedlings. A basic in vivo method …