Results 311 to 320 of about 111,053 (345)

Resistance of Alfalfa to the Spotted Alfalfa Aphid12

Journal of Economic Entomology, 1970
Single sterns with1 trifoliolate leaf from susceptible (C-Al) and resistant (C-84) alfalfa clones were placed in aqueous solutions of amino acids, sugars, or juices expressed from the 2 plants. After a day the trifoliolates were charged with adult Therioaphis maculata (Buckton) and insect behavior was noted for the succeeding 3 days.
Frank V. Lieberman, Ronald L. Misiorowski, Henry W. Kircher   +2 more
openaire   +2 more sources

Screening a Lactobacillus plantarum strain for good adaption in alfalfa ensiling and demonstrating its improvement of alfalfa silage quality

Journal of Applied Microbiology, 2020
To screen a lactic acid bacteria (LAB) strain for good adaption in alfalfa ensiling and to evaluate its effects on alfalfa ensiling.
Shanshan Zhao, Yanping Wang, Fengyuan Yang, Yuan Wang, Hua Zhang   +4 more
semanticscholar   +1 more source

A Biotype of the Spotted Alfalfa Aphid on Alfalfa

Journal of Economic Entomology, 1960
In February 1958, near El Centro, California, symptoms of susceptibility to the spotted alfalfa aphid ( Therioaphis maculate (Buckton)) were observed in the previously resistant alfalfa clone N(evada)-1018. A series of tests from March to October demonstrated that a biotype, designated ENT A, was capable of surviving and reproducing on three of the ...
G. R. Pesho, F. V. Lieberman, W. F. Lehman   +2 more
openaire   +2 more sources

Control of Alfalfa Webworm on Alfalfa, 1987

Insecticide and Acaricide Tests, 1988
Abstract The test was established on a 1-yr-old stand of alfalfa near Worton in Kent County, Md. The field had been completely defoliated except for a small area where the test was conducted. At time of treatment on 1 Sep the alfalfa had been severely stressed by drought.
T. W. Patton, J. L. Hellman
openaire   +2 more sources

Alfalfa Weevil Control in Alfalfa, 1991

Insecticide and Acaricide Tests, 1992
Abstract Experimental plots measuring 7.3 × 7.3 m (24 × 24 ft) were established in a 5-yr-old field of ‘Oneida VR’ alfalfa in the early bud stage located in Ithaca, NY. Soils were silt loam. Eleven treatments and 2 untreated checks were replicated 4 times in a randomized complete block design. Treatments were applied on 21 May with a C02
P. S. Taylor, E. J. Shields
openaire   +2 more sources

Crownwart of Alfalfa Caused by Urophlyctis Alfalfae

1920
(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
Jones, Fred Reuel, Drechsler, Charles
openaire   +1 more source

Alfalfa Weevil Control in Alfalfa, 1977

Insecticide and Acaricide Tests, 1979
Abstract The Williamsburg variety of alfalfa selected for the test was a production field partially budded with 80% of the tip showing seevil feeding injury. Stand was 2 years old. Treatment plots wer 10 ft x 10 ft and arranged in a randomized complete block design with 3 replicates.
Robert Rouse, John L. Hellman
openaire   +2 more sources

Breeding alfalfa cultivars resistant to the alfalfa weevil [PDF]

Euphytica, 1978
A ten-year study consisting of nine field experiments was conducted to evaluate alfalfa (Medicago sativa L.) for resistance to larval feeding by the alfalfa weevil (Hypera posticaGyllenhal). The results were consistent over years and experiments. Only one source of alfalfa germplasm, designated Starnes, showed resistance to larval feeding in the field ...
W. V. Campbell, W. V. Campbell, T. H. Busbice, T. H. Busbice, L. V. Bunch, L. V. Bunch, R. Y. Gurgis, R. Y. Gurgis   +7 more
openaire   +1 more source

Control of Alfalfa Weevil on Alfalfa, 1980

Insecticide and Acaricide Tests, 1982
Abstract Tests were conducted in a 2-yr-old production alfalfa stand in Baltimore County. Pre-counts were made on May 12 and weevil larvae averaged 39 per dip sweep of a 15 inch standard size net. Treatment plots were 10 ft x 15 ft and arranged in a randomized complete block design with 4 replicates.
Kevin Levesque, Maria Frishman, William Curtis, Robert Hochmuth, Fern Bassow, John L. Hellman   +5 more
openaire   +2 more sources

Economic Injury Levels of the Egyptian Alfalfa Weevil or the Alfalfa Weevil or the Alfalfa Weevil12

Journal of Economic Entomology, 1975
Pre-season applications of heptachlor to alfalfa were used to establish gradients of Egyptian alfalfa weevil, Hypera brunneipennis Boheman, or alfalfa weevil, H. postica (Gyllenhal), larval levels. Correlations of larval numbers and 1st cutting hay yields disclosed that every increase of 1 larva/sweep at the larval peak was associated with a yield ...
Sara S. Rosenthal, C. S. Koehler
openaire   +2 more sources