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Subject: APLICACION DE ABONOS ×

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Now showing 1 - 5 of 5
  • Artículo de revista
    Effect of fertilization on the production of female flowers in Stone pine (Pinus pinea L.)
    Pinus pinea L., commonly known as Stone pine, is famous for its edible seeds, called pine nuts. It is native to the Mediterranean area, and requires between 400-800 mm annual rainfall and 4-6 dry months for fruiting. Fertilizers, meanwhile, have demonstrated the capability to increase crop yields and improve product quality. Moreover, fertilization promotes root development and aerial plant growth, thereby contributing to the efficient use of soil and water (Sotomayor et al. 2001). Research on the effects of fertilization is readily available on walnut, chestnut and other species that produce edible seeds or nuts
    Loewe Muñoz, Verónica-Delard R., Claudia
    2012
  • Libro
    Manual de manejo de riego y fertilización en viveros de plantas a raíz cubierta
    El presente manual recopila la información técnica entregada durante las capacitaciones realizadas a los viveristas beneficiarios del proyecto, cuyo contenido le permitirá al lector conocer y aplicar las metodologías para monitorear gestionar y manejar, de manera práctica, económica y sencilla, el agua y nutrientes en su producción de plantas forestales. Mediante el desarrollo de ejercicios prácticos incluidos en este manual, el viverista podrá llegar a hacer un uso eficiente de los recursos agua y nutrientes durante el proceso de viverización de plantas nativas y exóticas.
    Cartes Rodríguez, Eduardo-Acevedo Tapia, Manuel-González Ortega, Marta-Álvarez, Carolina-García Rivas, Edison-Mena Marín, Pilar Paz
    2019
  • Artículo de revista
    Effect of fertilization on Pinus pinea cone to seed and kernel yields
    Stone pine (Pinus pinea L.) is a species of economic interest mainly due to its pine nuts, the most expensive nut in the world. Despite the high value of pine nuts, cones are mainly harvested from unmanaged forests. Therefore, research and its applications are needed to develop nutritional management techniques among other cultivation practices intened to boost production. This study evaluated the effect of fertilization on cone production and quality (cone weight and size, number of seeds and kernels, and health status), which in turn may affect cone to seed and cone to kernel yields. Fertilization consisted of two applications of macro and micronutrients in two adult plantations twice in the growing season (in spring and fall). Morphometric variables, cone production per tree and cone health were evaluated during two years after fertilization. Fertilization effect on cone production was positive and significant in both years, with variations between years. Most of the morphometric variables were positively impacted by fertilization, including cone diameter (3.5% increase), kernel weight and length (7.7% and 2.7% increase, respectively), and total seed and kernel weight per cone (20.9% and 18.6% increase, respectively). Fertilized stone pine trees increased production and quality of cones, seeds and kernels, but did not increase cone to seed or kernel yields. However, fertilization increased type II seed damage by 45.4% and 18.9% in 2020 and 2021, respectively. The results obtained in this research may help producers adopt cultural practices to boost pine nut production.
    Loewe Muñoz, Verónica-Del Río, Rodrigo-Delard R., Claudia-Balzarini, Mónica
    2023
  • Artículo de revista
    Fall fertilization during nursery production increases nitrogen status of Purshia tridentata seedlings: implications for outplanting
    During container nursery production of Purshia tridentata (antelope bitterbrush), we found that three fall fertilization applications successfully loaded plants with nitrogen (N) with little effect on plant biomass. Using 15N-labeled fertilizer to track N movements, we observed that N-loaded seedlings attained luxury consumption and ultimately translocated more N toward roots. In trees, such N-loading efforts have been reported to increase seedling survival and growth after outplanting by improving initial root growth. This leads to enhanced access to water and nutrients that increases overall plant competitiveness and performance. Our results add, in general, to the paucity of information concerning fall fertilization of shrubs, and specifically that this technique offers promise to enhance the quality of antelope bitterbrush seedlings. This could improve overall planting success of this important shrub native to western United States rangelands. Increasing the effectiveness of planting antelope bitterbrush, which can often improve restoration trajectories more than direct seeding or reliance on natural regeneration of this species, could accelerate the pace and scope of critical habitat restoration. Restoration is needed as antelope bitterbrush abundance has been reduced across the landscape because of conversion to agriculture, invasion by nonnative annual grasses, and an increase in fire frequency and intensity, among other reasons. In addition, this species provides browse for ungulates and critical habitat for at-risk species, such as Centrocercus urophasianus (greater sage-grouse). Although N loading antelope bitterbrush has potential to improve outplanting performance, the resulting higher nutrient status of this preferred browse species may lead to elevated browsing during seedling establishment.
    Dumroese, R. Kasten-Zhu, Yan-Acevedo Tapia, Manuel-Pinto, Jeremiah R.-Álvarez, Carolina-Liu, Yong
    2023
  • Artículo de revista
    Manejo nutricional y de riego en minijardines clonales de Tectona grandis (Linn. F) en la zona sur de Costa Rica
    La nutrición forestal es un tema en desarrollo actual tanto en las etapas de vivero como en las plantaciones. En algunos casos se presentan evidencias de deficiencias nutricionales desde los minijardines clonales, los cuales son una de las etapas iniciales en un vivero clonal. En un minijardín clonal de Tectona grandis (Linn. F) se evaluó el sistema de riego y la aplicación de distintas dosis junto con criterios de riego variados para así poder aplicar la técnica de fertirriego. Se determinaron los coeficientes de uniformidad de Christiansen y de distribución. Aparte de los tratamientos, también se utilizó el factor de semanas medidas para evaluar el comportamiento de las plantas madre de la teca ante la cosecha de brotes. El sistema de riego fue catalogado como inaceptable por lo que no fue uniforme. En cuanto a las variables medidas (diámetro, altura y cantidad de brotes) no se encontraron diferencias significativas (p ≤ 0,05) entre tratamientos, pero si entre semanas. En este proyecto se concluye que a pesar de que no existieron diferencias significativas entre tratamientos, los costos de utilizar sales como fertilizante son considerablemente menores.
    Calderón-Ureña, Fiorella-Esquivel Segura, Edwin Antonio-Acevedo Tapia, Manuel
    2019