Search Results - "Etchevers, J. D"

Transport, sorption and degradation of atrazine in two clay soils from Mexico: Andosol and Vertisol by Prado, B., Duwig, C., Hidalgo, C., Müller, K., Mora, L., Raymundo, E., Etchevers, J.D.

“…Although atrazine has been banned in the European Union, it is still one of the most widely used herbicides in the world. It is has been detected in surface…”
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Land-use effects on the distribution of soil organic carbon within particle-size fractions of volcanic soils in the Transmexican Volcanic Belt (Mexico) by Covaleda, S., Gallardo, J. F., García-Oliva, F., Kirchmann, H., Prat, C., Bravo, M., Etchevers, J. D.

“…The aim of this study was to determine the effect of land‐use and forest cover depletion on the distribution of soil organic carbon (SOC) within particle‐size…”
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Biomass Accumulation and its Relationship with the Demand and Concentration of Nitrogen, Phosphorus, and Potassium in Lettuce by Sosa, Anacleto, Padilla, Juliana, Ortiz, Joaquín, Etchevers, J. D

“…Lettuce (Lactuca sativa L.) has a short cultivation cycle and a rare growth pattern. The nutritional management program of this species must be designed before…”
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Biochemical indicators of carbon dynamic in an Acrisol cultivated under different management practices in the central Mexican highlands by Pajares, S., Gallardo, J.F., Masciandaro, G., Ceccanti, B., Marinari, S., Etchevers, J.D.

“…Prediction of soil changes that occurs as a result of agronomic management practices is very useful, particularly when restoration of degraded soils wants to…”
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Characterization, functioning and classification of two volcanic soil profiles under different land uses in Central Mexico by Prado, B., Duwig, C., Hidalgo, C., Gómez, D., Yee, H., Prat, C., Esteves, M., Etchevers, J.D.

“…Volcanic soils constitute an important resource for agriculture and forestry in Central Mexico, as well as in various world regions. They exhibit unique…”
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Iron accumulation in seed of common bean by Moraghan, J. T., Padilla, J., Etchevers, J.D., Grafton, K., Acosta-Gallegos, J.A.

“…The effect of soil and genotype on iron concentration [Fe] in common bean (Phaseolus vulgaris L.) seed was studied in the greenhouse. Liming an acid soil…”
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Salir de la invisibilidad: nuevos retos para la ciencia del suelo by J. D. Etchevers B., H. Cotler, Claudia Hidalgo

“…Las funciones y servicios ecosistémicos que los suelos proveen son esenciales para la calidad de vida humana, por ello se encuentran inmersos en siete de los…”
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Short-term green manure and tillage management effects on maize yield and soil quality in an Andisol by Astier, M., Maass, J.M., Etchevers-Barra, J.D., Peña, J.J., González, F. de León

“…Andisols are very important land resources supporting high human population density. Maize ( Zea mays L.) production on Andisols located in the Purhepecha…”
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Field diagnostic techniques to determine nitrogen in maize by Eduhin Roacho-Cortés, Javier Z. Castellanos-Ramos, J. D. Etchevers

“…Few technologies are available to quantify crop's nutritional status during their vegetative cycle, such as in maize. Semiquantitative alternatives could…”
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Short-term compost effect on macroaggregation in a sandy soil under low rainfall in the valley of Mexico by de León-González, F, Hernández-Serrano, M.M, Etchevers, J.D, Payán-Zelaya, F, Ordaz-Chaparro, V

“…Several studies have shown the importance of organic material in the formation and stability of soil aggregates. The organic matter of soil (SOM) is affected…”
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Air drying affects extractable sulfate in soils of variable charge: test of two extraction and two quantification methods by Mora Palomino, L, Siebe, C, Herre, A, Etchevers, J.D

“…Fertilizer recommendations need to be based on reliable soil sulfate determinations. Airdrying samples changes irreversibly many properties of soils with…”
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Evaluación de la calidad de suelo: generación e interpretación de indicadores by Ximena Castillo-Valdez, J. D. Etchevers, Claudia Ma. I. Hidalgo-Moreno, Arturo Aguirre-Gómez

“…Las prácticas de manejo del suelo alteran sus propiedades, especialmente cuando las entradas de energía al sistema suelo-planta son menores que las salidas, o…”
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Biomass production and phosphorus accumulation of potato as affected by phosphorus nutrition by Alvarez-Sanchez, E, Etchevers, J.D, Ortiz, J, Nunez, R, Volke, V, Tijerina, L, Martinez, A

“…Potato (Solanum tuberosum) generally requires high amounts of phosphate fertilizer to reach economically acceptable yields, particularly in soils originating…”
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Seasonal Dynamics of Soil CO2 Concentration and CO2 Fluxes from the Soil of the Former Lake Texcoco, Mexico by Ikkonen, E. N., García-Calderón, N. E., Ibáñez-Huerta, A., Etchevers-Barra, J. D., Krasilnikov, P. V.

“…Seasonal changes of the soil CO 2 concentration and the rate of CO 2 fluxes emission from the soil formed on the sediments of the former Lake Texcoco, which…”
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INTER-LABORATORY COMPARISON OF PLANT ANALYSIS ACCURACY IN MEXICO by LOPEZ R, R. M, ETCHEVERS B, J. D, VAQUERA H, H, HIDALGO M, C

“…Laboratories seeking accreditation based on norm ISO 17025 are requested to satisfy several requirements such as: traceability of measurements (i.e., the use…”
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Proficiency Tests Conducted by Soil and Plant Analysis Laboratories in Mexico by López, R. M. R., Segoviano, F., Arvizu, R., Lara, V., Mitani, Y., Etchevers, J. D. B.

“…Measurement is the comparison of a quantity against a certain standard. Measurements conducted in chemistry are usually compared against certified reference…”
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method for measuring above- and below-ground C stocks in hillside landscapes by Monreal, C.M, Etchevers, J.D, Acosta, M, Hidalgo, C, Padilla, J, Lopez, R.M, Jimenez, L, Velazquez, A

“…Information on C stocks in agriculture and forest ecosystems in hillside landscapes is limited. The objective of this study was to develop and test field…”
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A method to quantify N fertilizer requirement by Galvis-Spinola, A. (Centro de Edafologia, Montecillo (Mexico). Colegio de Postgraduados), Alvarez-Sanchez, E, Etchevers, J.D

“…A methodology to quantify N fertilizer requirement for a barley crop is proposed. The method consists of establishing a relationship between barley N demand…”
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Enzyme activity as an indicator of soil quality changes in degraded cultivated Acrisols in the Mexican Trans-volcanic Belt by Pajares, S., Gallardo, J. F., Masciandaro, G., Ceccanti, B., Etchevers, J. D.

“…Soils located at the Mexican Trans‐Volcanic Belt (MTB) have a worrying degree of degradation due to inappropriate management practices. Early indicators of…”
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Root–soil adhesion as affected by crop species in a volcanic sandy soil of Mexico by de León-González, F., Celada-Tornel, E., Hidalgo-Moreno, C.I., Etchevers-Barra, J.D., Gutiérrez-Castorena, M.C., Flores-Macías, A.

“…Field observations have shown that root residues maintain root-adhering soil for several months after harvest. The aim of this work was to compare post-harvest…”
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