3 research outputs found

    Azolla y vermicomposta: Semblanza sobre la vida y obra del Dr. Roberto Quintero Lizaola

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    La presente rese帽a es un simb贸lico homenaje post mortem que la Sociedad Mexicana de la Ciencia del Suelo (SMCS) A.C., rinde a la memoria del Dr. Roberto Quintero Lizaola. El Dr. Quintero Lizaola naci贸 en Ameca, Jalisco, M茅xico el 5 de mayo de 1958 y falleci贸 el 22 de Agosto de 2018 en la Ciudad de Texcoco, Estado de M茅xico. Durante su vida cient铆fica, el Dr, Quintero Lizaola se distingui贸 como un activo militante de la SMCS, A.C. Adem谩s de participar como ponente y coordinador de mesas de trabajo en diferentes congresos, se involucr贸 en diferentes comisiones en beneficio de 茅sta. Fungi贸 como secretario general de la SMCS, A.C. de 1991 a 1995. Igualmente, particip贸 como miembro del Comit茅 de Acci贸n para el Saneamiento del Ambiente (CASA), A.C. El Dr. Quintero Lizaola centr贸 sus investigaciones en el estudio y aplicaci贸n del hecho acu谩tico Azolla, as铆 como en la caracterizaci贸n y uso de las vermicompostas. Su legado como investigador del suelo, queda plasmado en los anales de la SMCS, A.C

    Entre amaranto y litchi: Semblanza sobre la vida y obra del Dr. Antonio Trinidad Santos.

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    Se puede definir al Dr. Antonio Trinidad Santos como un entusiasta investigador de los Andosoles y de su productividad agr铆cola. Probablemente, el ma铆z, amaranto y litchi fueron los cultivos a los que dedic贸 el mayor tiempo de su vida cient铆fica. La presente semblanza es un reconocimiento Post mortem que la Sociedad Mexicana de la Ciencia del Suelo, A.C. hace a uno de sus m谩s distinguidos miembros, reconociendo as铆 el legado que deja a los futuros edaf贸logos

    COMPARISON OF TWO CULTIVARS OF \u3ci\u3ePhaseolus vulgaris\u3c/i\u3e L. INOCULATED WITH A STRAIN OF NITROGEN FIXING RHIZOBACTERIA

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    INTRODUCTION: A whole spectrum of soil microorganisms in the rhizosphere, may affect the bean (Phaseolus vulgaris L.) yield as well as the interaction among the different microorganisms which might exist in the soil. The bean plant has also the opportunity to interact with other microorganisms as in the case of the bacteria (Gherbi et al., 2008; Marsh et al., 2008; Oldroyd et al., 2009). The nitrogen fixing bacteria such as a strain of Rhizobium tropici CIAT 899, are capable of fixing the atmospheric nitrogen when it occurs in symbiosis with its host plant, in this case the bean plant. MATERIALS AND METHODS: The experiment was carried out in a greenhouse of Colegio de Postgraduados at Montecillo, state of Mexico in July of 2016. Two cultivars of determinate growth habit were employed: OTI and Cacahuate 72. A group of seedlings in the simple leaf stage were inoculated with a suspension of strain Rhizobium tropici CIAT 899 bacteria. Another group was not inoculated. The plants were grown in plastic containers with 7 kg of sandy loam soil. The experimental design was a complete randomized with five replications. The following treatments were evaluated: 1) cv. OTI inoculated; 2) cv. OTI non inoculated; 3) cv. Cacahuate 72 inoculated and 4) cv. Cacahuate 72 non inoculated. Sixty nine days after planting, the rates of photosynthesis and transpiration were determined. At physiological maturity there were registered: the number of normal pods, seeds and seed yield (all per plant). The statistical analysis was performed with the SAS program (SAS, 2012)
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