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Abstract'The possibility of using physic nut oil as an alternative energy source indicates that it is necessary to carry out studies concerning the absorption and accumulation of nutrients in the distinct phases of development of the crop for the appropriate management of fertilizer application. Given this information, this study aimed to evaluate the accumulation of nutrients in the shoots of physic nut plants, as well as to identify critical nutrient uptake by this crop. The experiments were set up independently in two different locations, from May 2010 to March 2013, and using the same procedures. The locations were characterized as follows: Rhodic Hapludox in the municipality of Curvelo, MG; Typic Quartzipsamment in the municipality of Diamantina, MG. The experiments were conducted in a randomized block design with three replicates, the treatments being the evaluation times of the physic nut plants in both experiments. The collection times were every 30 days from planting of the seedlings in the field for a period of 1,036 days, corresponding to 36 evaluations. After collection, the samples were prepared and submitted to chemical analysis of the nutrient concentration of the plant material. The concentrations were reported as nutrient content of the leaves, stems and fruit of physic nut plants. According to the results, it can be concluded that nutrient accumulation was higher in the edaphoclimatic conditions of Curvelo compared to the conditions of Diamantina. The concentration of macronutrients was in the following order: K>Ca>N>P>S>Mg in Diamantina and N>Ca>K>P>Mg>S in Curvelo. Accumulation of micronutrients in the shoots at 1036 days after planting physic nut seedlings in the field was in the following order: Mn>B>Fe>Zn>Cu in Diamantina and Mn>Fe>B>Zn>Cu in Curvelo. Key words: Nutrition. Absorption. Jatropha curcas L. ResumoCom a possibilidade de utilização do óleo do pinhão-manso como uma alternativa energética, tem-se a necessidade de realizar estudos referentes à absorção e acúmulo de nutrientes nas diferentes fases de desenvolvimento da cultura para manejo adequado da adubação. Diante do exposto, objetivou-se com esse trabalho avaliar o acúmulo de nutrientes na parte aérea do pinhão-manso, bem como, identificar as fazes críticas de absorção de nutrientes por parte dessa cultura. independentemente, onde foram utilizados os mesmos procedimentos, no período de maio de 2010 a março de 2013 em locais distintos caracterizados a seguir: Latossolo Vermelho distrófico no município de Curvelo, MG, e o outro, em Neossolo Quartzarênico Órtico típico no município de Diamantina, MG. Os experimentos foram conduzidos em delineamento experimental em blocos casualizados com três repetições, sendo os tratamentos as épocas de avaliação das plantas de pinhão-manso para ambos os experimentos. As épocas de coletas foram a cada 30 dias a partir do plantio das mudas no campo num período de 1.036 dias que corresponderam a 36 avaliações. Após a coleta, as amostras foram preparadas e submetidas às análises químicas do material ...

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Basic information about mineral nutrition of physic nut is scarce. Especially, determination of index leaf to evaluate nutritional status is very rare. Therefore, objective of this study is to find the index leaf, the type and leaf position in the floral branch and propose critical levels of nutrients for nutritional diagnosis of physic nut. The nutrient concentrations in leaf limb, petiole and complete leaf and shoot dry weight of plant were recorded from the experiment under nutrient omissions in greenhouse. The complete leaf samples were also collected from two types of branches (main and lateral) and in three positions (apical, medial and basal of the branch), corresponding to the branches between the first and fourth, between the fifth and eighth and between the ninth and twelfth leaves, respectively, at flowering and seed productivity stages. These data were obtained from an experimental plot of NPK fertilization to define the position of the complete leaf to be sampled and to propose values of critical nutrient levels for physic nut. Critical levels of nutrients were proposed by means of reduced normal distribution criterion with field experiment data. The complete leaf (petiole and leaf limb) in the median position between the fifth and eighth leaves in the main and lateral branches in the full flowering of crop was indicated as sampling standard for the diagnosis of nutritional state of physic nut. In the present work, the critical levels of and macronutrients in leaf sampling were proposed as following (g kg-1