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Performance Of Certified Seed Lots Of Dawson Alfalfa, W. R. Kehr, G. R. Manglitz
Performance Of Certified Seed Lots Of Dawson Alfalfa, W. R. Kehr, G. R. Manglitz
Historical Research Bulletins of the Nebraska Agricultural Experiment Station
Breeder, foundation, and certified seed lots of Dawson alfalfa, Medicago sativa L., were tested to determine stability in performance during three generations of seed increase under certification. Two field experiments were conducted, a seeded forage yield test and a space-planted test. Greenhouse experiments included separate tests for resistance to pea aphids, spotted alfalfa aphids, and bacterial wilt. Results obtained on certified Dawson alfalfa seed classes in field and greenhouse experiments were in agreement with the original variety description.
Evaluation Of Beef Cattle Range Supplements Containing Urea And Biuret, Ivan G. Rush, R. R. Johnson, Robert Totusek
Evaluation Of Beef Cattle Range Supplements Containing Urea And Biuret, Ivan G. Rush, R. R. Johnson, Robert Totusek
Panhandle Research and Extension Center
Two winter trials were conducted with 304 lactating range cows on dry grass to evaluate non-protein-nitrogen (NPN) in 30% protein supplements containing biuret (pure and feed grade), urea and extruded grain-urea. The NPN sources contributed one-half of the supplemental nitrogen with natural 15 and 30% protein supplements serving as negative and positive controls.
Winter weight loss of cows was greater (P~.02) on the negative than on the positive control in both trials. The apparent utilization of all NPN sources was low and the utilization of urea and extruded grain-urea was less than pure or feed grade biuret. Rumen biuretolytic activity …