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      Presencia de metales pesados en cultivo de cacao (Theobroma cacao L.) orgánico Translated title: Presence of heavy metals in organic cacao (Theobroma cacao L.) crop

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          Abstract

          La presencia de metales pesados en el cultivo de cacao (Theobroma cacao L.) es actualmente un grave problema para agricultores y cooperativas de las regiones Huánuco y Ucayali, Perú. En el presente trabajo se evaluaron los contenidos de cadmio y plomo en suelos y hojas del cacao en estas regiones. Para el efecto se recolectaron y analizaron en laboratorio muestras tomadas en 22 parcelas con cultivos orgánicos de esta especie, 17 en la región Huánuco y cinco en la región Ucayali. Se realizaron análisis de correlación de Pearson entre los contenidos de plomo y cadmio disponibles en el suelo con variables foliares (P, Mg, Ca, Zn, Cd, Pb) y del suelo (arena, arcilla y K). En los suelos, sólo en el caso de potasio se presentan deficiencias; mientras que en el tejido foliar se presentaron deficiencias de N, P, K, Mg y Zn. Los valores promedio de cadmio y plomo disponible en los suelos fueron 0.53 y 3.02 ppm y en las hojas de cacao de 0.21 y 0.58 ppm respectivamente.

          Translated abstract

          The presence of heavy metals in cocoa´s crop is becoming a difficulty for farmers and cooperatives at Huanuco and Ucayali regions, Peru. In this research cadmium and lead content in cocoa´s soils and leaves was evaluated. For it, soil and foliar samples were collected in 22 organic crop plots located at Huánuco (17) and Ucayali (5) region. Pearson’s correlation analysis was realized between content of lead and cadmium available in soils with foliar variables (P, Mg, Ca, Zn, Cd, Pb) and soil (Sand, Clay and K). According to the soil analysis only the potassium was deficient; while in leaf tissue deficiencies of N, P, K, Mg and Zn were observed. The average values of cadmium and lead available in soils were 0.53 ppm and 3.02 ppm and in foliar were 0.21 ppm and 0.58 ppm respectively.

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          Most cited references 25

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          Trace elements in soils and plants

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            Análisis químico de suelo

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              DETERMINATION OF EXCHANGEABLE HYDROGEN IN SOILS BY A TITRATION METHOD

               T. YUAN (1959)
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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Journal
                acag
                Acta Agronómica
                Acta Agron.
                Universidad Nacional de Colombia (Palmira )
                0120-2812
                December 2012
                : 61
                : 4
                : 339-344
                Affiliations
                [1 ] Universidad Nacional Agraria de la Selva Peru
                Article
                S0120-28122012000400006
                Product
                Product Information: website
                Categories
                AGRICULTURE, MULTIDISCIPLINARY

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