Citas bibligráficas
Barzola, A., (2024). Tipos de biochar en la remediación del cadmio en el cultivo de maíz (Zea mays L.) en invernadero [Universidad Nacional Agraria La Molina]. https://hdl.handle.net/20.500.12996/6503
Barzola, A., Tipos de biochar en la remediación del cadmio en el cultivo de maíz (Zea mays L.) en invernadero []. PE: Universidad Nacional Agraria La Molina; 2024. https://hdl.handle.net/20.500.12996/6503
@misc{renati/1116037,
title = "Tipos de biochar en la remediación del cadmio en el cultivo de maíz (Zea mays L.) en invernadero",
author = "Barzola Pérez, Araceli Yóselin",
publisher = "Universidad Nacional Agraria La Molina",
year = "2024"
}
The high concentrations of cadmium present in the agricultural soils of the country are generating great limitations in agriculture, affecting mainly agro-export crops. Agricultural products with high concentrations of this metal cannot enter the countries of destination due to their regulations regarding Cd concentration thresholds. Thus, the purpose of this greenhouse investigation was to evaluate the effects of the organic amendment biochar on the availability of cadmium from contaminated soils from La Molina using maize (Zea mays L.) as a bio-indicator. The main objective of this investigation was to evaluate the effect of two types of biochar. The first one produced from rice husks and the second one produced from bamboo, each one burnt at 300°C. Four application rates were applied with each type of biochar: 0%, 7.5%, 15%, and 30% (v%). The study was conducted in a factorial arrangement of eight treatments with four replications (pots) per treatment. The pots were distributed in a Completely Randomized Design. A subsequent crop was also evaluated to assess the residual effect of the treatments. The results showed that biochar applications significantly decreased Cd concentration in maize roots and leaves with bamboo biochar at 15% being the most efficient, showing average concentrations of 0.31 mg Cd.kg-1 and 0.34 mg Cd.kg-1 in roots and leaves, respectively. Regarding the residual effect of the biochar application an increase of Cd concentration in roots was observed in the second crop. Concerning dry weight and nitrogen absorption, both amendments presented positive effects on the plants of the study, being bamboo biochar at 7.5% more efficient than the other treatments. Plants showed averages of 7.02 g.pot-1 and 61.96 g.pot-1 in dry weight of roots and leaves, and 1406.94 mg N. pot-1 and 1136.94 mg N. pot-1 in nitrogen absorption in the first and second yield, respectively.
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