versión impresa ISSN 0103-9016
VELOSO, Carlos Alberto Costa y CARVALHO, Eduardo Jorge Maklouf. NUTRIENT UPTAKE AND EXTRACTION BY BLACK PEPPER CULTIVAR 'GUAJARINA'. Sci. agric. [online]. 1999, vol.56, n.2, pp. 443-447. ISSN 0103-9016. http://dx.doi.org/10.1590/S0103-90161999000200026.
The economic importance of black pepper and the need for information of production sustainability justified this work, to determine the concentration and the distribution of nutrients N, P, K, Ca and Mg, in several parts of the plant. The experiment was carried out in Belém, Pará, in a soil classified as Yellow Latosol (Alic Haplustox), medium texture, with the following chemical characteristics: pH in H2O = 4.5; OM = 17.5 g kg-1; P = 2.0 mg .dm-3 and the exchangeable cations, in mmolc.dm-3, K = 0.48; Ca2+ = 4.0; Mg2+ =2,0; Al3+ = 13.0. The samples were composed of six plants of the cultivar 'Guajarina', collected at 28 months after planting, at the production period. The nutrients were extracted in the decreasing order: N> Ca> K> Mg> P. The amounts of macronutrients exported by the fruits, in kg.ha-1, are: N=11.22; K=6.15; Ca=3.84; Mg=1.18 and P=1.07.
Palabras llave : Piper nigrum; mineral nutrition; macronutrients; extraction of nutrients.