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  • Open Access


    Land equivalent ratio, grain and pod yield and ethereal extract of Helianthus annuus L. in monoculture and associated with Pisum sativum L. in function of stabilized urea

    Piña-González JL1, EJ Morales-Rosales2, A Domíngez-López2, JF Ramírez-Dávila2, G Estrada-Campuzano2, O Franco-Mora2

    Phyton-International Journal of Experimental Botany, Vol.83, pp. 101-108, 2014, DOI:10.32604/phyton.2014.83.101

    Abstract The aim of this study was to assess the land equivalent ratio, biomass, grain yield and ethereal extract of Helianthus annuus in monoculture and associated with Pisum sativum in function of stabilized urea (0, 40, 80 kg N/ha) in El Cerrillo, México. It was also estimated pod yield obtained by P. sativum as a pure stand and associated with H. annuus. The six treatments (in each experiment) were evaluated in a 2 × 3 factorial experiment in a randomized complete block design with four replications. When F values were significant, the honestly significant difference test at the 5% level of… More >

  • Open Access


    Integral evaluation of fertilization on triticale seed production (X Triticum secale Wittmack)

    Mendoza Elos M1, S Sámano Rodríguez1, F Cervantes Ortiz1, E Andrio Enríquez1, JA Rangel Lucio1, JG Rivera Reyes1, LP Guevara Acevedo1, E Moreno Martínez2

    Phyton-International Journal of Experimental Botany, Vol.83, pp. 93-100, 2014, DOI:10.32604/phyton.2014.83.093

    Abstract Seed production requires not only the application of appropriate techniques but also a good knowledge and planning aspects of agricultural production that allow an effective use of the staff and available production facilities. The advantage in using biofertilizers in agriculture is the reduction in production costs. This is because less chemical fertilizers are needed, and in turn this implies a reduction in input costs. Therefore, the objective of this study was to determine the best combination of chemical and organic fertilization for seed production on triticale (X Triticum secale Wittmack). The study was conducted at the Instituto Tecnológico de Roque,… More >

  • Open Access


    Fertilization and association with pioneer herbaceous species on the performance of Pinus pseudostrobus

    Gómez-Romero M1, E de la Barrera2, J Villegas3, R Lindig-Cisneros4

    Phyton-International Journal of Experimental Botany, Vol.82, pp. 135-143, 2013, DOI:10.32604/phyton.2013.82.135

    Abstract When degradation is severe, as it is often the case on acrisols, it is necessary to test the effect of plant-plant interactions in their survival and growth. An experiment was conducted, with substrate from an eroded site (acrisols with gullies) in a shaded greenhouse (30% shade) to evaluate the effect of fertilization and the presence of pioneer herbaceous species in the performance of Pinus pseudostrobus. The pioneer species Lupinus mexicanus and Tithonia tubiformis were used in three experimental treatments and a control. To fertilize, KH2PO4 was applied in four concentration levels. There were a total of 16 treatment combinations when… More >

  • Open Access


    Comparative effectiveness of two nitrogen sources for corn fertilization

    Copperi MZ1, ME M,olesi2, MA Cantamutto2, MM Ron2

    Phyton-International Journal of Experimental Botany, Vol.82, pp. 99-106, 2013, DOI:10.32604/phyton.2013.82.099

    Abstract Corn has not only a high growth potential and a great capacity of biological response to suitable crop management but also may contribute to a better match of crops with environmental offer in Argentina. Nitrogen (N) fertilization must make provision for eventual N losses, and fertilization strategies must be designed so as to minimize their global incidence. The different quick-release N sources show similar efficiencies when they are incorporated, but in surface applications, sources that contain little or no amidic N have a better performance than urea (U). The objective of this paper was to make an evaluation of corn… More >

  • Open Access


    Yield and quality of tomato with organic sources of fertilization under greenhouse conditions

    Márquez-Hernández C1, P Cano-Ríos2, U Figueroa-Viramontes3, JA Avila-Diaz4, N Rodríguez-Dimas2, JL García-Hernández1

    Phyton-International Journal of Experimental Botany, Vol.82, pp. 55-61, 2013, DOI:10.32604/phyton.2013.82.055

    Abstract The scarcity of fertilizers that are allowed in organic agriculture (AO) encourages the search for alternatives, being the use of compost one of the most outstanding. AO has been recognized as a more sustainable system than conventional agriculture. AO is ruled by strict norms which forbid the use of most common fertilizers. The aim of this study was to evaluate the effect of various fertilization treatments on the organic production of greenhousegrown tomato. A completely randomized experimental design with five replications was used, with a 5x2 factorial arrangement. Factors A and B were: a) fertilization treatments and b) tomato genotypes.… More >

  • Open Access


    Biomass production and yield of green beans (Phaseolus vulgaris L.) cv. Strike in response to phosphate fertilization

    Salinas1 R, E Sánchez2, JM Ruíz3, MT Lao1, L Romero3

    Phyton-International Journal of Experimental Botany, Vol.81, pp. 35-39, 2012, DOI:10.32604/phyton.2012.81.035

    Abstract We determined the (1) deficiency, (2) apropriate level and (3) toxiticity of phosphorus on the total biomass production and yield of judía verde (Phaseolus vulgaris L.) cv. ‘Strike’. Studies were conducted in a growth chamber using pots. Phosphorus levels in the nutrient solution were P1: 0.5 mM; P2: 1 mM; P3: 2 mM; P4: 4 mM; P5: 6 mM, and P6: 8 mM. The optimum phosporus concentration was P3. As soil phosphorus concentration increased, concentration of this nutrient also increased in the plant. Leaf, petiole and shoot biomasses were more sensitive to deficiency than to toxicity of phosphorus. However, root… More >

  • Open Access


    Tuberous root yield of Dahlia variabilis Wild (Desf.) under different agronomic management practices

    Arenas Julio YR1, R Delgado-Martínez1, EJ Morales-Rosales2, A Laguna-Cerda2, O Franco-Mora2, E Urbina Sánchez3

    Phyton-International Journal of Experimental Botany, Vol.80, pp. 107-112, 2011, DOI:10.32604/phyton.2011.80.107

    Abstract The Dahlia variabilis Wild (Desf.) is considered the Mexican national flower and their exploitation is mainly for ornamental purposes. Recent studies have shown that the tuberous roots dry weight of this species contains from 38 to 53% of a polysaccharide of fructose called inulin. The consumption of this compound does not elevate the levels of glucose in the blood of human beings, making this polysaccharide an attractive product for the food industry. This fact has helped to diversify (1) the production of Dahlia variabilis and (2) research towards the production of their roots. The aim of this study was to… More >

  • Open Access


    Tillage systems and fertilization on yield of forage maize

    López Martínez JD, C Vázquez Vázquez, E Salazar Sosa, R Zúñiga Tarango, HI Trejo Escareño

    Phyton-International Journal of Experimental Botany, Vol.79, pp. 47-54, 2010, DOI:10.32604/phyton.2010.79.047

    Abstract About 15% of the world surface is subjected to the effect of man activities. The main causes of land surface degradation are livestock production, deforestation and inadequate agricultural practices. In Mexico, little attention has been given to soil conservation as a non-renewable natural resource. This has been mainly degraded by excessive use of agricultural machinery. As a result, 64% of the national territory suffers some degree of deterioration. Comarca Lagunera, located between Coahuila and Durango states in Mexico, is the main milk production region. In this region, 900000 t of cow manure are produced annually. This amount of cow manure… More >

  • Open Access


    Effects of nitrogen fertilization on heavy metal content of corn grains

    Rui Yu-kui, Zhang Fu-suo, Shen Jian-bo

    Phyton-International Journal of Experimental Botany, Vol.78, pp. 101-104, 2009, DOI:10.32604/phyton.2009.78.101

    Abstract Nitrogen fertilization has played a significant role in increasing crop yield, and solving problems of hunger and malnutrition worldwide. However, excessive nitrogen inputs do not significantly increase crop yields but may lead to many serious environmental problems. The effects of nitrogen fertilization rate were studied on heavy metal content of corn grains. Our results show that nitrogen fertilization management is beneficial for reducing production costs, protecting the environment, and improving the quality of farm products. More >

  • Open Access


    Effect of nitrogen and phosphorus fertilization on phytic acid concentration and vigor of oat seed (var. Saia) in Mexico

    Rivera-Reyes1 JG, FA Peraza-Luna2, JC Serratos-Arévalo2, P Posos-Ponce3, SH Guzmán-Maldonado4, E Cortez-Baheza1, G Castañón-Nájera5, M Mendoza-Elos1*

    Phyton-International Journal of Experimental Botany, Vol.78, pp. 37-42, 2009, DOI:10.32604/phyton.2009.78.037

    Abstract Oats cereal is a worldwide significant crop. It is grown in restrictive climates and in rainy regions of temperate areas. Cultivation of oats produces high forage yields and grain quality, which gives it a wide variety of uses as animal feed and human food. However, the physiological quality of oat seeds in Mexico faces problems, which impact both their import and export. Phytic acid concentration in the oat seed plays a very important role since it affects seed viability, its germination capacity and potential seedling vigor. The objective of this study was to determine the effect of chemical fertilization on… More >

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