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Search Results: 1 - 10 of 602087 matches for " SALAZAR-GARCíA Domingo C. "
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El Neolítico antiguo cardial y la Cova de la Sarsa (Bocairent, València). Nuevas perspectivas a partir de su registro funerario.
GARCíA BORJA Pablo, SALAZAR-GARCíA Domingo C., PéREZ FERNáNDEZ ángela, PARDO GORDó, Salvador y CASANOVA VA?ó Vicent
Munibe Antropologia-Arkeologia , 2011,
Abstract: Con la finalidad de confirmar la presencia de inhumaciones en contextos cardiales del País Valenciano se han realizado diferentes dataciones AMS sobre huesos humanos aparecidos en contextos neolíticos. Los resultados permiten afirmar que en la Cova de la Sarsa se practicó el ritual de inhumación durante el Neolítico antiguo, aunque también demuestran su uso como espacio funerario en momentos posteriores. Los restos humanos de la cueva quedan relacionados con un uso funerario puntual de la misma. La comparación de los datos obtenidos con el registro valenciano y peninsular proporciona una imagen heterogénea del ritual funerario cardial. éste se relaciona con grupos formados por un número reducido de miembros organizados en diferentes comunidades.
Composición y remoción nutrimental de frutos de mango 'Haden' y 'Tommy Atkins' bajo producción forzada Fruit nutrient composition and removal by 'Haden' and 'Tommy Atkins' mangos fruits under forced production
Adriana Mellado-Vázquez,Samuel Salazar-García,César Augusto Trevi?o-de la Fuente,Isidro José Luis González-Durán
Revista mexicana de ciencias agrícolas , 2012,
Abstract: Para mejorar el manejo de la nutrición del mango y mantener la fertilidad del suelo es necesario conocer la composición nutrimental de los frutos así como la cantidad de nutrimentos removidos por la cosecha. En 2009 se realizó el presente estudio con los cvs. Haden y Tommy Atkins bajo producción forzada en el Valle de Apatzingán, Michoacán, México con los objetivos de: i) determinar la composición nutrimental de los tejidos del fruto (epidermis, pulpa, testa y embrión); y ii) cuantificar la cantidad de nutrimentos removida por la cosecha de los dos cultivares de mango. Se seleccionaron dos huertos comerciales de mango 'Haden' y dos de 'Tommy Atkins', con manejo del riego y tipo de suelo (Vertisol) similares. En cada huerto se eligieron cinco árboles de los que se cosecharon dos frutos en madurez fisiológica. Los frutos se separaron en sus tejidos y a cada uno les fue determinado en la materia seca la concentración de N, P, K, Ca, Mg, S, Fe, Cu, Mn, Zn y B. La composición nutrimental de los tejidos del fruto presentó variaciones dentro de cada cultivar. La epidermis y el embrión presentaron las mayores concentraciones de nutrimentos. La cantidad de nutrimentos removidos varió con el tejido, presentándose los valores más altos para pulpa y epidermis y los más bajos para la testa. La cantidad de nutrimentos removida por tonelada de fruto fresco fue similar en los dos cultivares de mango, con excepción del Mn cuya remoción fue mayor en los frutos de 'Haden'. Los intervalos de remoción nutrimental para 'Haden' y 'Tommy Atkins' fueron (kg t-1 fruto fresco): N (1.03-1.11), P (0.22-0.24), K (1.88-2.14), Ca (0.21-0.31), Mg (0.14-0.15), S (0.28-0.33); (g t-1 fruto fresco): Fe (3.53.8), Cu (1.0-1.1), Mn (3.2-4.8), Zn (2.0-2.8) y B (1.5-1.6). To improve the management of mango nutrition and maintain soil fertility it is necessary to know the nutrient composition of the fruit as well as the amount of nutrients removed by the crop planting . This study was carried out in 2009 with the cvs. Haden and Tommy Atkins under forced production in the Valle deApatzingan, Michoacan, Mexico, with the aims of: i) determining the nutrient composition of the fruit's tissues (epidermis, pulp, testa and embryo); and ii) quantifying the amount of nutrients removed by the crop of both mango cultivars. Two commercial 'Haden' mango orchards were chosen, along with two 'Tommy Atkins' orchards, with similar irrigation schemes and soils (Vertisol). In each orchard five trees were chosen and harvested two fruit per tree at physiological maturity. Fruit were separated in their tissues and th
Desarrollo floral de los aguacates 'choquette' y 'booth-8' en clima cálido: Parte I
Cossio-Vargas, Luis Eduardo;Salazar-García, Samuel;Medina-Torres, Raúl;
Agricultura técnica en México , 2008,
Abstract: knowledge of different aspects of vegetative and floral development of choquette and booth-8 avocados is necessary to improve their productivity in the avocado producing region of san blas, nayarit, mexico. this research was undertaken from 2004-2006 in one choquette and one booth-8 orchard cultivated under rainfed conditions (annual rain= 1 453 mm) in the warm and subhumid climate (average annual temp.= 25.2 °c) of jalcocotan, san blas, mexico. the objectives were: a) to determine the occurrence and intensity of vegetative growth flushes, b) to quantify the contribution of each vegetative flush to bloom, and c) to assess the evolution of floral development for choquette and booth-8 avocados. three vegetative flushes occurred in choquette: spring, summer, and fall; the spring flush had the greatest intensity. booth-8 only had two vegetative flushes of similar intensity, spring and summer. choquette spring vegetative flush had the highest contribution to bloom (57%), followed by summer (39%) and fall (14%) flushes. in booth-8, the greatest contribution to bloom corresponded to summer vegetative flush (51%). shoot age (spring or summer) had no effect on the date when both type of shoots attained anthesis in choquette. the complete floral development process, from closed and pointed vegetative bud to anthesis, in choquette spring flush shoots required 365 days. summer shoots of choquette and booth-8 needed 255 days.
Poblaciones de gusano telara?ero y barrenador de ramas en huertos de aguacate "Hass" de Nayarit, México
Urías-López, Mario Alfonso;Salazar-García, Samuel;
Agricultura técnica en México , 2008,
Abstract: since there is scarce information on avocado insects pests in nayarit, mexico, the objectives of this study were: a) to collect field information of the life history and behavior of the avocado leafroller (amorbia cuneana) and the stem weevil (copturus aguacatae), b) to determine their population dynamics, and c) their incidence on avocado trees managed with site specific fertilization. the study was conducted from 2004 to 2006 in la yerba (tepic county) and emiliano zapata (xalisco county), nayarit, mexico. four generations of the avocado leafroller were detected from june to november. the development from egg to adult lasted 35 to 43 days. avocado leafroller populations were higher in la yerba than in e. zapata, but no differences on fruit damage were detected. avocado leafroller populations were present from june to november, but the highest populations were detected during the last generation (october-november). the highest leafroller populations occurred in the second year; in la yerba this occurred on november 20 and in e. zapata on october 13 (1.5 and 1.2 larvae branch, respectively). only one generation of the avocado stem borer was recorded, which lasted 292 days from egg to adult. populations of this pest were also higher in la yerba than in e. zapata. with the exception of the rainy season, larvae of the avocado stem borer were present almost the whole year, during the first year, the population peak was observed in january-february and in the second year during april (11.15 and 18.1 stem borers per tree, respectively). higher populations were recorded in avocado trees with low fertilizer rates, compared to site specific balanced fertilization.
Determinación irreversible a la floración del aguacate 'Hass' en Michoacán
Rocha-Arroyo, José Luis;Salazar-García, Samuel;Bárcenas-Ortega, Ana Elizabeth;
Revista mexicana de ciencias agrícolas , 2010,
Abstract: the aim of this study was to specify periods in which occurs irreversible determination to flowering in apical bud of vegetative sprout for winter, spring and summer flows in avocado orchards with and without irrigation set under four climatic conditions. the study was carried out during 2006-2008, in six commercial orchards for avocado 'hass' in state of michoacán, mexico. in each orchard 20 trees were selected and in each one 30 sprouts of each vegetative flow were labeled. treatments consisted on girdling and defoliation of a sprout per tree every fifteen days for each vegetative flow. localitites climate, influenced on the date in which occurred irreversible determination to flowering in sprouts of the three vegetative flows, it occurred earlier in temperate climate than in warm. after emergence, the sprouts of winter flow required more time to reach the irreversible determination to flowering than of spring and summer flows. the irreversible determination to flowering in winter, spring and summer flows sprouts it occurred from may 30 to july 23, from may 28 to september 26 and from june 10 to september 15, respectively, and from 29 to 42 days earlier in orchards without irrigation. in floral development scale, the number of irreversible determined to flowering buds ranged from 3 to 4 in winter sprouts, from 3 to 5 in spring and from 1 to 4 in summer.
Determinación irreversible a la floración del aguacate 'Hass' en Michoacán Irreversible determination to flowering for 'Hass' avocado in Michoacán
José Luis Rocha-Arroyo,Samuel Salazar-García,Ana Elizabeth Bárcenas-Ortega
Revista mexicana de ciencias agrícolas , 2010,
Abstract: El objetivo de este estudio, fue precisar los periodos en que ocurre la determinación irreversible a la floración en yemas apicales de brotes vegetativos de los flujos de invierno, primavera y verano en huertos de aguacate con y sin riego establecidos en cuatro condiciones climáticas. El estudio se realizó durante 2006-2008, en seis huertos comerciales de aguacate 'Hass' en el estado de Michoacán, México. En cada huerto se seleccionaron 20 árboles y cada uno se etiquetaron 30 brotes de cada flujo vegetativo. Los tratamientos consistieron en anillado y defoliación de un brote por árbol cada quince días para cada flujo vegetativo. El clima, influyó sobre la fecha en que ocurrió la determinación irreversible a la floración en los brotes de los tres flujos vegetativos, ésta ocurrió más temprano en clima templado que en cálido. Después de la emergencia, los brotes del flujo de invierno requirieron más tiempo para alcanzar la determinación irreversible a la floración que en primavera y verano. La determinación irreversible a la floración en brotes de los flujos de invierno, primavera y verano ocurrió del 30 de mayo al 23 de julio, del 28 de mayo al 26 de septiembre y del 10 de junio al 15 de septiembre, respectivamente, y de 29 a 42 días más temprano en los huertos sin riego. En el desarrollo floral, el número de yemas determinadas irreversiblemente a la floración variaron de 3 a 4 en los brotes de invierno, de 3 a 5 en primavera y de 1 a 4 en verano. The aim of this study was to specify periods in which occurs irreversible determination to flowering in apical bud of vegetative sprout for winter, spring and summer flows in avocado orchards with and without irrigation set under four climatic conditions. The study was carried out during 2006-2008, in six commercial orchards for avocado 'Hass' in State of Michoacán, Mexico. In each orchard 20 trees were selected and in each one 30 sprouts of each vegetative flow were labeled. Treatments consisted on girdling and defoliation of a sprout per tree every fifteen days for each vegetative flow. Localitites climate, influenced on the date in which occurred irreversible determination to flowering in sprouts of the three vegetative flows, it occurred earlier in temperate climate than in warm. After emergence, the sprouts of winter flow required more time to reach the irreversible determination to flowering than of spring and summer flows. The irreversible determination to flowering in winter, spring and summer flows sprouts it occurred from May 30 to July 23, from May 28 to September 26 and from June 10 to September 15,
La fertilización de sitio específico mejoró la productividad del aguacate 'Hass' en huertos sin riego
Salazar-García, Samuel;Cossio-Vargas, Luis Eduardo;González-Durán, Isidro José Luis;
Agricultura técnica en México , 2009,
Abstract: the research was performed during 2001-2005 to test the effect of site specific fertilization on yield and fruit size on 'hass' avocado grown under rainfed conditions. three commercial 'hass' avocado orchards, exploring the fertility of the predominant soils on the low, medium and high avocado producing zones of tepic and xalisco municipalities of the state of nayarit were included. fertilization dosages were calculated by considering tree's nutrient demand to produce 3 0 t ha-1, nutrient inve stment on tree biomass, nutrient recycling, soil fertility, nutrient foliar analysis, and fertilization efficiency. mineral fertilization included n, p, k, ca, mg, s, zn, and b and consisted of two levels: normal, obtained by the calculations described above, and high, equivalent to the normal rate plus 50%. two fertilization regimes used regionally by avocado growers were used as controls: control-1 consisted in fertilization with n and k plus 50 kg composted chicken manure per tree per year; control-2 only included n and k. soil fertility was improved with high fertilization rate. fertilization based on n and k, alone or complemented with chicken manure did not improve yield nor fruit size. yield, fruit size and economical analysis showed that high rate fertilization, that consisted in the application per tree of 2.140 kg n, 0.742 kg p2o5, 2.520 kg k2o, 810 g zn, and 94.30 g b, was the best to improve the productivity of 'hass' avocado en nayarit.
Desarrollo floral de los aguacates 'choquettes' y 'booth-8' en clima cálido: Parte II
Salazar-García, Samuel;Cossio-Vargas, Luis Eduardo;González-Durán, Isidro José Luis;
Agricultura técnica en México , 2008,
Abstract: to improve the efficiency of several cultural practices, such as pruning, fertilizer and plant bioregulators application, etc. is necessary to know the time when buds and shoots reach the stage of irreversible commitment to flowering (icf). the objective of this investigation was to establish the date when icf occurs in apical buds of spring and summer shoots of 'choquette' and 'booth-8' avocados. the study was conducted from 2004 to 2006 in one 'choquette' and one 'booth-8'orchards in the warm subhumid climate of jalcocotán, municipality of san blas, nayarit, mexico. time for icf was established by means of the type of growth produced (vegetative or floral) by apical buds of spring and summer shoots in response to biweekly treatments of bark ringing plus defoliation. the date of icf varied between the cultivars studied. the date of icf for the 'choquette' avocado was 15 november and there were no differences due to shoot age (spring or summer). for 'booth-8', the icf of summer shoots occurred by 30 november. macroscopic characteristics of apical buds irreversible committed to flowering were closed and pointed buds with partial senescence of bud scales.
Corrección de la deficiencia crónica de zinc en aguacate 'Hass'
Salazar-García, S.;Cossio-Vargas, L. E.;González-Durán, I. J. L.;
Revista Chapingo. Serie horticultura , 2008,
Abstract: below normal zinc (zn) foliar levels, as well as zn deficiency visual symptoms in leaves, shoots and fruit are commonly observed in 'hass' avocado orchards at tepic and xalisco counties, nayarit state, mexico. the research was undertaken from 2001 to 2005 in two commercial non-irrigated 'hass' avocado orchards at tepic. the objective was to assess the effect of foliar or soil zinc sulphate (znso4) applications on zn foliar levels, as well as on yield, fruit size and fruit form. orchard soil was of light texture, ph 5.8 and low zn content (1.4 to 3.13 mg·kg-1). tree canopy sprays treatments were applied using 8 l water·tree-1 and were: a) a single spray of 4,056 g znso4·litter water-1 (1.46 g zn), and b) two sprays of 2.028 g znso4·litter water-1 (0.73 g zn); both treatments delivered 11.68 g zn/tree. soil treatments were annual and consisted of: a) single application of 1.5 kg znso4 (35.5% zn)·tree-1, and b) two applications of 0.75 kg znso4·tree-1 each. control trees were let untreated. znso4 foliar sprays were ineffective to correct foliar zn deficiency and had no positive effect on yield and fruit size. two soil applications of 0.75 kg znso4·tree-1year-1 were effective to increase yield, fruit size and fruit form (more elongated), decreasing the production of small and round fruits. this treatment also increased zn levels in leaves and fruit pulp. a poor relationship between znso4 quantity applied to the soil and zn leaf content was found.
Influencia del clima, humedad del suelo y época de floración sobre la biomasa y composición nutrimental de frutos de aguacate 'Hass' en Michoacán, México
Salazar-García, Samuel;González-Durán, Isidro José Luis;Tapia-Vargas, Luis Mario;
Revista Chapingo. Serie horticultura , 2011,
Abstract: the extended harvest season of 'hass' avocado is due to the diversity of cultivation conditions and the occurrence of multiple vegetative flushes resulting in several bloom and harvest periods. the objective of this study was to evaluate the influence of three climatic conditions (subhumid semiwarm, humid semiwarm, and subhumid temperate), soil moisture regimes (with and without irrigation), and flowering period ("crazy": august-september; "normal": december-february; "marce?a": february-march), on biomass of different fruit parts and their nutrient composition. six trees were selected from each of the six commercial orchards, choosing ten fruit of each tree per flowering season (>21.5 % pulp dry matter). fruits were separated in epidermis, pulp, testa, and embryo. fresh weight (fw), dry weight (dw), dry matter (dm), and nutrient composition were determined for each part. different to climate and soil moisture regimes, flowering period affected fw, dw, and dm of the fruit parts, as well as their nutrient composition, especially, k, ca, mg, s, fe, cu, mn, zn, and b. under subhumid climate, the highest contents of n and mn were obtained in epidermis; of n, p, k, ca, and mg in pulp; of mg, s, cu, and mn in testa; and b in testa and embryo. non-irrigated orchards had higher concentrations of ca, s, and cu in epidermis; p, k, mn, ca, and cu in pulp; k, mn, cu in testa; and p, k, mn in embryo.
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