Presence of heavy metals in organic cacao (theobroma cacao l.) crop Report as inadecuate




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The presence of heavy metals in cocoas crop is becoming a problem for farmers and cooperatives at Huánuco and Ucayali regions, Peru. In this research cadmium and lead contents in cocoa soils and leaves were evaluated. For it, soil and foliar samples were collected in 22 organic crop plots located at Huánuco 17 and Ucayali 5 regions. Pearson correlation analysis was performed between available content of lead and cadmium in soils with foliar variables P, Mg, Ca, Zn, Cd, Pb and soil Sand, Clay and K variables. 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 available cadmium and lead in soils were 0.53 ppm and 3.02 ppm and in leaves were 0.21 ppm and 0.58 ppm respectively., 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.

Tipo de documento: Artículo - Article

Palabras clave: Cadmio, contaminantes, metales pesados, plomo, suelo, Theobroma cacao; Cadmium, contaminants, Heavy metals, lead, soil, Theobroma cacao, Cadmium, contaminants, heavy metals, lead, soil, Theobroma cacao.





Source: http://www.bdigital.unal.edu.co


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Presence of heavy metals in organic cacao (Theobroma cacao L.) crop Presencia de metales pesados en cultivo de cacao (Theobroma cacao L.) orgánico Hugo Alfredo HuamanI-Yupanqui1*, Miguel Ángel Huauya-Rojas1†, Luis Germán MansillaMinaya1‡, Nelino Florida-Rofner2††, and Gilmer Milton Neira-Trujillo3‡‡ 1 Departament of Agricultural Sciences, Faculty of Agronomy.
2Professional career on Soil and Water Conservation, Faculty of Natural Resources.
3Soil Analysis Laboratory, Faculty of Agronomy, Universidad Nacional Agraria de la Selva, Apartado Postal 156, Tingo Maria, Huánuco, Peru. *Corresponding author: hhuamani@hotmail.com; †mhuauyar@gmail.com; ‡lmansillam@hotmail.com; ††nelinof@hotmail.com; ‡‡analisisdesuelosunashotmail.com Rec.: 07.02.12 Acept.: 10.11.12 Abstract The presence of heavy metals in cocoas crop is becoming a problem for farmers and cooperatives at Huánuco and Ucayali regions, Peru.
In this research cadmium and lead contents in cocoa soils and leaves were evaluated.
For it, soil and foliar samples were collected in 22 organic crop plots located at Huánuco (17) and Ucayali (5) regions.
Pearson correlation analysis was performed between available content of lead and cadmium in soils with foliar variables (P, Mg, Ca, Zn, Cd, Pb) and soil (Sand, Clay and K) variables. 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 available cadmium and lead in soils were 0.53 ppm and 3.02 ppm and in leaves were 0.21 ppm and 0.58 ppm respectively. Key words: Cadmium, contaminants, heavy metals, lead, soil, Theobroma cacao. Resumen 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 e...






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