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For some years now, part of society has been demanding the implementation of circular economy models and so the use of organic matter as a source of nutrients is once again taking center stage. In this scenario, the aim of this work was to implement an integrated management model for a farm and to study the influence on a celery crop of organic amendments (animal and vegetable) obtained on the farm, as opposed to inorganic fertilization. This influence was evaluated for the yield and the nutritional, organoleptic, and sanitary quality of the resulting crops. The yield and size of the marketable parts of the celery plants were greater with the inorganic treatment; however, the nutritional and sanitary quality was better in the organic treatments, while the chromatic attributes, as well as the total P and Ca, were not affected by the different fertilization treatments applied. It is therefore concluded that the organic management model is environmentally and economically sustainable.
Antonio Sánchez Navarro; Juan Antonio Sánchez Romero; María Del Carmen Salas Sanjuan; María Arantzazu Blanco Bernardeau; María José Delgado Iniesta. Medium-Term Influence of Organic Fertilization on the Quality and Yield of a Celery Crop. Agronomy 2020, 10, 1418 .
AMA StyleAntonio Sánchez Navarro, Juan Antonio Sánchez Romero, María Del Carmen Salas Sanjuan, María Arantzazu Blanco Bernardeau, María José Delgado Iniesta. Medium-Term Influence of Organic Fertilization on the Quality and Yield of a Celery Crop. Agronomy. 2020; 10 (9):1418.
Chicago/Turabian StyleAntonio Sánchez Navarro; Juan Antonio Sánchez Romero; María Del Carmen Salas Sanjuan; María Arantzazu Blanco Bernardeau; María José Delgado Iniesta. 2020. "Medium-Term Influence of Organic Fertilization on the Quality and Yield of a Celery Crop." Agronomy 10, no. 9: 1418.
In the present work, a sampling grid of the urban core of the city of Murcia (South East Spain) was designed in order to analyze street dust, focusing on the contents of the heavy metals Cd, Cr, Cu, Ni, Pb, and Zn and their relationships with the color of the sample, the traffic pattern, and the location where they were sampled (sidewalks, ledges, and roads). The characterization of the samples was carried out by X-ray diffraction and scanning electron microscopy, whereas the heavy metals were extracted by acid digestion and determined by inductively coupled plasma mass spectrometry. The concentration (mg/kg) in urban dust of the city of Murcia was highest for Zn (653), followed by Cu (201) > Pb (177) > Cr (117) > Ni (51) >> Cd (0.5). The color expounded statistically significant differences with regard to the heavy metals, including the pollutant load. The same pattern was found when the classification variable was the traffic intensity, except in the case of Ni. The areas with a higher risk of contamination by heavy metals in the urban dust are the ledges of narrow city center streets with moderate traffic, where Zn and Pb seem to accumulate most greatly.
Pura Marín Sanleandro; Antonio Sánchez Navarro; Elvira Díaz-Pereira; Francisco Bautista Zuñiga; Miriam Romero Muñoz; María José Delgado Iniesta. Assessment of Heavy Metals and Color as Indicators of Contamination in Street Dust of a City in SE Spain: Influence of Traffic Intensity and Sampling Location. Sustainability 2018, 10, 4105 .
AMA StylePura Marín Sanleandro, Antonio Sánchez Navarro, Elvira Díaz-Pereira, Francisco Bautista Zuñiga, Miriam Romero Muñoz, María José Delgado Iniesta. Assessment of Heavy Metals and Color as Indicators of Contamination in Street Dust of a City in SE Spain: Influence of Traffic Intensity and Sampling Location. Sustainability. 2018; 10 (11):4105.
Chicago/Turabian StylePura Marín Sanleandro; Antonio Sánchez Navarro; Elvira Díaz-Pereira; Francisco Bautista Zuñiga; Miriam Romero Muñoz; María José Delgado Iniesta. 2018. "Assessment of Heavy Metals and Color as Indicators of Contamination in Street Dust of a City in SE Spain: Influence of Traffic Intensity and Sampling Location." Sustainability 10, no. 11: 4105.
The systematic use of magnetic techniques for the characterization of soils is still scarce despite its great potential for the identification of pedogenetic processes. The main objective of this study is to analyze the magnetic properties of a soil profile with contrasting horizons and try to relate them to the properties determined through conventional techniques. The horizons of a soil profile located in a tectonic depression in Murcia, Spain are described and their physical, chemical, and mineralogical properties analyzed with conventional techniques. The following magnetic properties are included in the study: the mass-specific magnetic susceptibility, frequency-dependent susceptibility, continuous thermomagnetic curves at low field, isothermal remanent magnetization acquisition and the estimation of magnetic hardness (coercitivity) through the parameter S-200. Detailed description of the soil profile and the results of conventional analyses allowed the identification of a mollic horizon, an argic horizon, and a calcic horizon, as well as a textural discontinuity. Apparently, pedogenic magnetite occurs in the A horizon and is responsible for the magnetization in most cases. The magnetic carriers in the Bt horizons are superparamagnetic particles and they are related to the high percentage of clay. High coercivity minerals (hematite and probably goethite) were detected in different concentrations in all soil horizons. The amount of ferrimagnetic minerals decreases with depth. The magnetic properties allowed a better characterization of the diagnostic horizons. The results and information derived from the analysis of the magnetic properties could not be obtained using conventional soil analysis only.
Francisco Bautista; Maria Felicidad Bógalo; Antonio Sánchez Navarro; Avto Goguitchaichvili; María José Delgado Iniesta; Ruben Cejudo; Purificación Marín Sanleandro; Juana María Gil; Elvira Díaz-Pereira. Magnetic and pedological characterisation of a paleosol under aridic conditions in Spain. Studia Geophysica et Geodaetica 2017, 62, 139 -166.
AMA StyleFrancisco Bautista, Maria Felicidad Bógalo, Antonio Sánchez Navarro, Avto Goguitchaichvili, María José Delgado Iniesta, Ruben Cejudo, Purificación Marín Sanleandro, Juana María Gil, Elvira Díaz-Pereira. Magnetic and pedological characterisation of a paleosol under aridic conditions in Spain. Studia Geophysica et Geodaetica. 2017; 62 (1):139-166.
Chicago/Turabian StyleFrancisco Bautista; Maria Felicidad Bógalo; Antonio Sánchez Navarro; Avto Goguitchaichvili; María José Delgado Iniesta; Ruben Cejudo; Purificación Marín Sanleandro; Juana María Gil; Elvira Díaz-Pereira. 2017. "Magnetic and pedological characterisation of a paleosol under aridic conditions in Spain." Studia Geophysica et Geodaetica 62, no. 1: 139-166.
Antonio Sánchez Navarro; J.M. Gil-Vázquez; Maria José Delgado; Pura Marín Sanleandro; M. Arantzazu Blanco Bernardeau; R. Ortiz-Silla. Establishing an index and identification of limiting parameters for characterizing soil quality in Mediterranean ecosystems. CATENA 2015, 131, 35 -45.
AMA StyleAntonio Sánchez Navarro, J.M. Gil-Vázquez, Maria José Delgado, Pura Marín Sanleandro, M. Arantzazu Blanco Bernardeau, R. Ortiz-Silla. Establishing an index and identification of limiting parameters for characterizing soil quality in Mediterranean ecosystems. CATENA. 2015; 131 ():35-45.
Chicago/Turabian StyleAntonio Sánchez Navarro; J.M. Gil-Vázquez; Maria José Delgado; Pura Marín Sanleandro; M. Arantzazu Blanco Bernardeau; R. Ortiz-Silla. 2015. "Establishing an index and identification of limiting parameters for characterizing soil quality in Mediterranean ecosystems." CATENA 131, no. : 35-45.
Clean cultivation is a common practice in rainfed orchards; however, it may have detrimental effects on soil properties. This study examines the effect of different soil management systems on physical, chemical, and biochemical properties in a hypercalcic Calcisol in rainfed almond orchards (Prunus dulcis (Mill.) D.A. Webb) in SE Spain. Four types of soil management (main-plot treatments) were compared to a frequently tilled orchard system (FT: three or four tillages per year). The four types of soil management were: fencing (SF) of a flock of 130 sheep in 0.4 ha and grass cover was kept throughout the growing season; native vegetation (NV) that was allowed to grow; cover crop (CC) composed of legumes and crucifers; and reduced tillage (RT) comprising autumn and spring chisel ploughing. Each type of soil management was split into two grazing treatments (subplot treatments): with and without grazing. Our results supported the hypothesis that clean cultivation, i.e., FT, has deleterious effects on soil properties compared with managed groundcover. Compared with FT treatment, at the end of the experiment, the rest of treatments had higher wet aggregate stability (except the SF treatment), soil organic carbon (10.6 g kg−1 vs. 5.4 g kg−1, mean groundcover treatments vs. FT), total nitrogen (1.35 g kg−1 vs. 0.83 g kg−1, mean groundcover treatments vs. FT), available potassium (332 mg kg−1 vs. 187 mg kg−1, mean groundcover treatments vs. FT), and dehydrogenase (2.6 μg INTF g−1 h−1 vs. 1.9 μg INTF g−1 h−1, mean groundcover treatments vs. FT), arylsulphatase (12.8 μg PNP g−1 h−1 vs. 6.5 μg PNP g−1 h−1, mean groundcover treatments vs. FT), β-glucosidase (569 μg PNP g−1 h−1 vs. 300 μg PNP g−1 h−1, mean groundcover treatments vs. FT), and phosphatase activity (394 μg PNP g−1 h−1 vs. 220 μg PNP g−1 h−1, mean groundcover treatments vs. FT). Grazed plots had higher water content in soil (10 g H2O kg soil−1 vs. 9.4 g H2O kg soil−1, grazed vs. not grazed plots) and greater levels of arylsulphatase (12 μg PNP g−1 h−1 vs. 11 μg PNP g−1 h−1, grazed vs. not grazed plots), β-glucosidase (582 μg PNP g−1 h−1 vs. 491 μg PNP g−1 h−1, grazed vs. not grazed plots), and phosphatase activity (396 μg PNP g−1 h−1 vs. 345 μg PNP g−1 h−1, grazed vs. not grazed plots), in late spring, and this is attributed to the reduction of evapotranspiration and to the stimulation of root activity by means of plant defoliation. In conclusion, under the conditions of this study, managements including grass cover improved physical, chemical and biological properties of soil compared with frequent tillage, particularly when grass was early removed by grazing.
María E. Ramos; Ana B. Robles; Antonio Sánchez Navarro; José L. González-Rebollar. Soil responses to different management practices in rainfed orchards in semiarid environments. Soil and Tillage Research 2011, 112, 85 -91.
AMA StyleMaría E. Ramos, Ana B. Robles, Antonio Sánchez Navarro, José L. González-Rebollar. Soil responses to different management practices in rainfed orchards in semiarid environments. Soil and Tillage Research. 2011; 112 (1):85-91.
Chicago/Turabian StyleMaría E. Ramos; Ana B. Robles; Antonio Sánchez Navarro; José L. González-Rebollar. 2011. "Soil responses to different management practices in rainfed orchards in semiarid environments." Soil and Tillage Research 112, no. 1: 85-91.
In this paper, a multiresidue method for the analysis in soils of metribuzin (M) and its major conversion products, deaminometribuzin (DA), diketometribuzin (DK) and deaminodiketometribuzin (DADK) is developed. Considering the neutral and charged nature of the molecules, micellar electrokinetic chromatography (MEKC) is a very efficient method for the separation of these compounds, providing high efficiency and short analysis times. Different electrophoretic parameters were studied to optimize the separation, such as the buffer pH and concentration, sodium dodecyl sulphate (SDS) concentration, injection conditions and applied voltage. Excellent separation of the studied compounds was achieved within about 7 min. Soil samples were previously extracted using methanol in an ultrasonic bath and then a SPE procedure was applied to pre-concentrate the analytes by passage through a LiChrolut EN sorbent column. Detection limits at the low microgkg(-1) level were obtained. The proposed method has been satisfactorily applied in soil samples showing recoveries ranging from 86.7% to 104.2% and represents a valuable alternative to high-performance liquid chromatography (HPLC).
José Fernando Huertas-Pérez; Monsalud Del Olmo Iruela; Ana M. García-Campaña; Antonio González-Casado; Antonio Sánchez Navarro. Determination of the herbicide metribuzin and its major conversion products in soil by micellar electrokinetic chromatography. Journal of Chromatography A 2006, 1102, 280 -286.
AMA StyleJosé Fernando Huertas-Pérez, Monsalud Del Olmo Iruela, Ana M. García-Campaña, Antonio González-Casado, Antonio Sánchez Navarro. Determination of the herbicide metribuzin and its major conversion products in soil by micellar electrokinetic chromatography. Journal of Chromatography A. 2006; 1102 (1-2):280-286.
Chicago/Turabian StyleJosé Fernando Huertas-Pérez; Monsalud Del Olmo Iruela; Ana M. García-Campaña; Antonio González-Casado; Antonio Sánchez Navarro. 2006. "Determination of the herbicide metribuzin and its major conversion products in soil by micellar electrokinetic chromatography." Journal of Chromatography A 1102, no. 1-2: 280-286.