12/30/2023 0 Comments Plant stem jointcurcas treated with 100-100-150 kg ha -1 per year of N-P 2O 5-K 2O increases 4.5-fold, reaching 3,937 kg seeds ha -1 per year as compared to absolute control without fertilization (875 kg ha -1 per year). curcas in poor soils were highly influenced by the application of NPK fertilizers. Mohapatra and Panda (2011) found that growth and yield of J. curcas, reducing plant height and affecting leaf formation ( Wang et al., 2011). Fertilization that is nitrogen-poor could severely diminish biomass production in J. curcas is a deficiency of macronutrients in the soil ( Silva et al., 2009 Ahmed et al., 2016). One of the factors that limits growth and dry mass production in J. Little information on these characteristics is available in the field under Colombian conditions ( Campuzano, 2008 Arévalo et al., 2011). However, these features (low requirements in mineral nutrients and water, low labor demand, and tolerance for salinity, pests and diseases) were recorded for genotypes from the wild. These characteristics extend perspectives for the plant's cultivation in northwestern South America. This shrub adapts easily to various tropical climatic conditions and can grow on marginal lands of low fertility and does not compete with traditional crops ( Matos et al., 2014). Jatropha curcas (Euphorbiaceae) produces seeds containing 27-43% inedible oil that can be converted into biodiesel ( Chhetri et al., 2008). In the search for sustainable sources of energy, plant materials for the production of biofuel have recently attracted attention. Palabras clave: crecimiento, modelación, macronutrientes, nutrición mineral, Euphorbiaceae. Estos modelos permiten en futuro predicciones rápidas y no invasivas del crecimiento de J. curcas utilizando un análisis de regresión múltiple. Los modelos de predicción matemática se obtuvieron para Hp y BSD en J. La aplicación de fertilizantes N dio como resultado tallos más gruesos en comparación con las plantas de control. Con los intervalos de confianza simultáneos de Bonferroni, se compararon los tiempos de evaluación indicando para Hp intervalos no superpuestos a 435 DAP (150 kg ha -1 N y niveles restantes de este factor) y a 255 DAP (180 kg ha -1 K 2O y el resto niveles de este factor). La Hp varió tanto en función de la dosis de N como de la dosis de K 2O anidada en la dosis de N, obteniéndose las plantas más altas con aplicación de 150 kg ha -1 N y 180 kg ha -1 K 2O. El experimento incluyó un diseño de medidas repetidas con factores de fertilización entre sujetos (dosis de N, dosis de K 2O anidadas en la dosis de N) y un factor de tiempo de evaluación. curcas según lo afectado por las diferentes dosis de nitrógeno (N) y potasio (K) durante los primeros 435 días de crecimiento (DAP). Este estudio evaluó la altura de la planta (Hp) y el diámetro del tallo basal (BSD) de J. para producir biocombustibles es de creciente interés en Colombia, mientras que hay poca información disponible sobre esta especie como cultivo. Key words: growth, modeling, macronutrients, mineral nutrition, Euphorbiaceae.Įl uso de materias primas vegetales de Jatropha curcas L. These models permitted future rapid and non-invasive predictions for J. curcas using a multiple regression analysis. Mathematical predictive models were obtained for Hp and BSD in J. The application of N fertilizers resulted in thicker stems as compared to control plants. With simultaneous confidence intervals of Bonferroni, we compared the evaluation times indicating for Hp non-overlapping intervals at 435 DAP (150 kg ha -1 N and remaining levels of this factor) and at 255 DAP (180 kg ha -1 K 2O and remaining levels of this factor). The tallest plants were obtained with 150 kg ha -1 N and 180 kg ha -1 K 2O treatment. The Hp varied both as a function of N dose and the K 2O dose nested in the N dose. The experiment involved a repeated measures design with inter-subject factors of fertilization (N dose, K 2O dose nested in N dose) and an intra-subject factor of evaluation time. curcas as affected by different rates of nitrogen (N) and potassium (K) during the first 435 days of growth (DAP). This research evaluated plant height (Hp) and basal stem diameter (BSD) of J. to produce bio-fuel is of increasing interest in Colombia little information is available on this species as a crop. The use of raw materials of Jatropha curcas L.
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