Seasonal variation of nutrient content in the foliage of Jatropha curcas

Physic nut (Jatropha curcas) is a perennial crop cultivated for the production of oil. Achieving high productivity depends on a profound knowledge of nutritional demand and the appropriate time for fertilization. This study aimed to register the seasonal variation of content of nutrients in leaf and...

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Bibliographic Details
Published in:	Semina. Ciências agrárias : revista cultural e científica da Universidade Estadual de Londrina Vol. 35; no. 6; pp. 3031 - 3042
Main Authors:	Lima, Rosiane De Lourdes Silva, Azevedo, Carlos Alberto Vieira de, Ghreyi, Hans Raj, Sofiatti, Valdinei, Carvalho Júnior, Genelicio Sousa, Cazetta, Jairo Osvaldo, Arriel, Nair Helena de Castro
Format:	Journal Article
Language:	English
Published:	Universidade Estadual de Londrina 01-01-2015
Subjects:	Sampling time; Mineral nutrition; Oilseed crop; Jatropha curcas
Online Access:	Get full text
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Summary:	Physic nut (Jatropha curcas) is a perennial crop cultivated for the production of oil. Achieving high productivity depends on a profound knowledge of nutritional demand and the appropriate time for fertilization. This study aimed to register the seasonal variation of content of nutrients in leaf and to determine the most suitable time for performing analysis of leaf. For the study treatments were defined as a factorial combination of 10 months (February, March, April, May, June, August, September, October, November and December) and two provenances of leaf tissues (tissues originating from vegetative branches and coming from fruiting terminals). A completely randomized design was used with four replications and two plants were sampled each time. Foliar concentrations of N, P, K, Ca, Mg, S, Cu, Fe, Mn and Zn showed a wide variation between leaf shedding period through bloom and fruit filling, but the variation was narrow in the period before the leaf shedding phase or the phase of physiological rest. Therefore, the most appropriate time to assess the nutritional status of plants of Jatropha is at the end of the reproductive period during the 30 days preceeding leaf shedding.
ISSN:	1676-546X 1679-0359
DOI:	10.5433/1679-0359.2014v35n6p3031