Resumo

GONZALEZ-FLORES, Eduardo; RAMOS-BARRAGAN, Jacqueline Esther; TORNERO-CAMPANTE, Mario Alberto  e  MURILLO-MURILLO, Misael. Evaluation of doses of urban biosolids in maize under greenhouse conditions. Rev. Mex. Cienc. Agríc [online]. 2017, vol.8, n.1, pp.119-132. ISSN 2007-0934.  https://doi.org/10.29312/remexca.v8i1.76.

The biosolids have characteristics that can improve the fertility of soils. Generally, strategies for the agricultural use of biosolids are not based on studies that support the doses applied to specific crops. It is necessary to carry out previous research to apply biosolids in a given crop; the effects that are produced depend on the climate, type of soil and quality of the biosolids. The objective of this study was to evaluate, under greenhouse conditions, the effects that different doses of biosolids produce on the quality of the maize plant, the heavy metal content in it and the chemical characteristics of the soil of the southern zone of the municipality of Puebla. The study was developed in 2013 under greenhouse conditions; had a duration of 120 days. A completely randomized experimental design with six treatments and four replicates was used. The treatments were different doses of biosolids: T1= 100 t ha-1, T2= 200 t ha-1, T3= 300 t ha-1, T4= 400 t ha-1, T5= 500 t ha-1, TC= soil without biosolids. The vegetative variables, soil chemical properties and heavy metals were measured in root, stem and leaves of the plant. For the vegetative variables, there is no statistical difference between treatments. The chemical properties of the soil improve and are adequate in the treatments with higher doses. The content of heavy metals in the different parts of the plant are suitable for their development and the plumbum content does not represent risk of toxicity.

Palavras-chave : Zea mays L.; residual sludge; heavy metals.

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