Azospirillum spp. biofertilization and corn, sorghum and wheat grain yield

El escrito muestra evidencias del uso de Azospirillum spp. en la producción de grano de maíz, sorgo y trigo en México. Los ensayos en campo se desarrollaron en dos sitios geográfica y tecnológicamente distintos con semillas inoculadas y sembradas con cepas de A. lipoferum o A. brasilense. Los resultados permiten apreciar una respuesta benéfica de la inoculación sólo para sorgo con cepas de A. brasilense VS-7 o VS-9, debido a que el rendimiento de grano fue significativamente mayor (55 y 49%), que el testigo fertilizado. Este resultado prueba la afinidad existente entre sorgo y A. lipoferum VS-7 ó VS-9 y el uso potencial de la biofertilización en una región con nivel tecnológico-productivo medio.This manuscript argues about the Azospirillum spp. biofertilization profit, through grain yield of corn, sorghum and wheat tilled in Mexico. The assays were development in two different places. The seeds were inoculated with A. lipoferum or A. brasilense strains and later sowed. The results demonstrated a beneficial response to inoculation only for sorghum because of A. lipoferum VS-7 or VS-9 strains effect: the grain yield was significantly greater (55% and 49%) than nitrogen fertilizer effect. This result shown the affinity between sorghum plants and A. lipoferum VS-7 or VS-9 strains and the biofertilization potential use in a Mexico region where the agriculture production development a middle technology.Fil: Rangel Lucio, José Antonio. Instituto Tecnológico de Ciudad Victoria (Tamaulipas, México).Fil: Ramírez Gama, Rosa María. Universidad Nacional Autónoma de México. Facultad de Química.Fil: Cervantes Ortíz, Francisco. Instituto Tecnológico de Roque (Guanajuato, México).Fil: Mendoza Elos, Mariano. Instituto Tecnológico de Roque (Guanajuato, México).Fil: García Moya, Edmundo. Texcoco (México). Colegio de PostgraduadosFil: Rivera Reyes, Guadalupe. Universidad Nacional Autónoma de México. Facultad de Química

Biofertilización de Azospirillum spp. y rendimiento de grano de maíz, sorgo y trigo

This manuscript argues about the Azospirillum spp. biofertilization profit, through grain yield of corn, sorghum and wheat tilled in Mexico. The assays were development in two different places. The seeds were inoculated with A. lipoferum or A. brasilense strains and later sowed. The results demonstrated a beneficial response to inoculation only for sorghum because of A. lipoferum VS-7 or VS-9 strains effect: the grain yield was significantly greater (55% and 49%) than nitrogen fertilizer effect. This result shown the affinity between sorghum plants and A. lipoferum VS-7 or VS-9 strains and the biofertilization potential use in a Mexico region where the agriculture production development a middle technology.El escrito muestra evidencias del uso de Azospirillum spp. en la producción de grano de maíz, sorgo y trigo en México. Los ensayos en campo se desarrollaron en dos sitios geográfica y tecnológicamente distintos con semillas inoculadas y sembradas con cepas de A. lipoferum o A. brasilense. Los resultados permiten apreciar una respuesta benéfica de la inoculación sólo para sorgo con cepas de A. brasilense VS-7 o VS-9, debido a que el rendimiento de grano fue significativamente mayor (55 y 49%), que el testigo fertilizado. Este resultado prueba la afinidad existente entre sorgo y A. lipoferum VS-7 ó VS-9 y el uso potencial de la biofertilización en una región con nivel tecnológico-productivo medio

The Fourteenth Data Release of the Sloan Digital Sky Survey: First Spectroscopic Data from the extended Baryon Oscillation Spectroscopic Survey and from the second phase of the Apache Point Observatory Galactic Evolution Experiment

The fourth generation of the Sloan Digital Sky Survey (SDSS-IV) has been in operation since July 2014. This paper describes the second data release from this phase, and the fourteenth from SDSS overall (making this, Data Release Fourteen or DR14). This release makes public data taken by SDSS-IV in its first two years of operation (July 2014-2016). Like all previous SDSS releases, DR14 is cumulative, including the most recent reductions and calibrations of all data taken by SDSS since the first phase began operations in 2000. New in DR14 is the first public release of data from the extended Baryon Oscillation Spectroscopic Survey (eBOSS); the first data from the second phase of the Apache Point Observatory (APO) Galactic Evolution Experiment (APOGEE-2), including stellar parameter estimates from an innovative data driven machine learning algorithm known as "The Cannon"; and almost twice as many data cubes from the Mapping Nearby Galaxies at APO (MaNGA) survey as were in the previous release (N = 2812 in total). This paper describes the location and format of the publicly available data from SDSS-IV surveys. We provide references to the important technical papers describing how these data have been taken (both targeting and observation details) and processed for scientific use. The SDSS website (www.sdss.org) has been updated for this release, and provides links to data downloads, as well as tutorials and examples of data use. SDSS-IV is planning to continue to collect astronomical data until 2020, and will be followed by SDSS-V.Comment: SDSS-IV collaboration alphabetical author data release paper. DR14 happened on 31st July 2017. 19 pages, 5 figures. Accepted by ApJS on 28th Nov 2017 (this is the "post-print" and "post-proofs" version; minor corrections only from v1, and most of errors found in proofs corrected

La ganadería ante escenarios complejos.

La calidad de las contribuciones, producto de la pluma de especialistas en los temas tratados, el presente es un libro que esperamos, basándonos en la importancia de los temas tratados, sea de utilidad y abone a la reflexión de los estudiosos de la ganadería mexicana y, por supuesto, en beneficio de las familias ganaderas y de los consumidores de sus productos.este libro refleja en muchos sentidos la situación de la ganadería mexicana, a la que se le están demandando mayor producción y productividad, que los procesos productivos tengan la menor huella ecológicposible, que los alimentos sean inocuos, que se abatan costos de producción y, cada vez aumentan las presiones de diversos grupos para, que se incluyan los protocolos de bienestar animal, solamente por citar algunos de los retos que tiene. Algunas de estas demandas son complementarias, otras se contraponen, lo que hace valiosos a los estudios que desde las ciencias sociales se realizan y, desde diversas ópticas, se hagan propuestas de política pública balanceadas que consideren lo mejor de cada enfoque, pero sin desechar por completo los antagónicos.Universidad Autónoma Chaping

The Fourteenth Data Release of the Sloan Digital Sky Survey: First Spectroscopic Data from the Extended Baryon Oscillation Spectroscopic Survey and from the Second Phase of the Apache Point Observatory Galactic Evolution Experiment

The fourth generation of the Sloan Digital Sky Survey (SDSS-IV) has been in operation since 2014 July. This paper describes the second data release from this phase, and the 14th from SDSS overall (making this Data Release Fourteen or DR14). This release makes the data taken by SDSS-IV in its first two years of operation (2014–2016 July) public. Like all previous SDSS releases, DR14 is cumulative, including the most recent reductions and calibrations of all data taken by SDSS since the first phase began operations in 2000. New in DR14 is the first public release of data from the extended Baryon Oscillation Spectroscopic Survey; the first data from the second phase of the Apache Point Observatory (APO) Galactic Evolution Experiment (APOGEE-2), including stellar parameter estimates from an innovative data-driven machine-learning algorithm known as "The Cannon"; and almost twice as many data cubes from the Mapping Nearby Galaxies at APO (MaNGA) survey as were in the previous release (N = 2812 in total). This paper describes the location and format of the publicly available data from the SDSS-IV surveys. We provide references to the important technical papers describing how these data have been taken (both targeting and observation details) and processed for scientific use. The SDSS web site (www.sdss.org) has been updated for this release and provides links to data downloads, as well as tutorials and examples of data use. SDSS-IV is planning to continue to collect astronomical data until 2020 and will be followed by SDSS-V