The sensitivities and specificities of 17 antibody detection tests for brucellosis in goats were estimated. Tests evaluated included the U.S. Department of Agriculture (USDA) card test with 8% cell concentration (8%Card), USDA rapid automated presumptive test (RAP), Mexican rose bengal plate tests with 8 and 3% cell concentrations (8%RB and 3%RB), French rose bengal plate test with 4.5% cell co...

Nodulation, acetylene reduction activity, dry matter accumulation, and total nitrogen accumulation by nodulated plants growing in a nitrogen-free culture system were used to compare the symbiotic effectiveness of the fast-growing Rhizobium fredii USDA 191 with that of the slow-growing Bradyrhizobium japonicum USDA 110 in symbiosis with five soybean (Glycine max (L.) Merr.) cultivars. Measuremen...

CSA NewsVolume 68, Issue 8 p. 29-29 FEDERAL CORNER USDA, NASA Advance Exploration and Science First published: 28 July 2023 https://doi.org/10.1002/csan.21091Read the full textAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare text full-text accessPlease review our Terms Conditions of Use check box below share version article.I have read ac...

The internally transcribed spacer (ITS) sequences of several members within each of 17 soybean bradyrhizobial serogroups were determined to establish whether the regions within all members of each serogroup were identical. The rationale was to provide a sequence-based alternative to serology. The objective also was to link the extensive older literature on soybean symbiosis based on serology wi...

Abstract Livestock Mandatory Price reporting, enacted to increase market transparency, has been in place for more than 20 years. However, immense structural change cattle and beef markets challenged information over that time. Large variation present transaction prices, especially those the Formula purchases category, on any given day made traditionally United States Department of Agriculture (...

The primary goal of the Walnut Improvement Program, which was initiated in 1982 as a cooperative effort between USDA-ARS and U.C. Davis, is to develop germplasm with increased resistance or tolerance to the two major diseases limiting commercial production of Persian walnuts. These are the blackline and the Phytophthora root and crown rot diseases. Also under the auspices of this program are th...