Availability and uptake of trace elements in a forage rotation under conservation and plough tillage

Garcia Marco, Sonia; Gómez Rey, M.X. y González Prieto, S.J. (2014). Availability and uptake of trace elements in a forage rotation under conservation and plough tillage. "Soil & Tillage Research", v. 137 ; pp. 33-42. ISSN 0167-1987.

Descripción

Título: Availability and uptake of trace elements in a forage rotation under conservation and plough tillage
Autor/es:
  • Garcia Marco, Sonia
  • Gómez Rey, M.X.
  • González Prieto, S.J.
Tipo de Documento: Artículo
Título de Revista/Publicación: Soil & Tillage Research
Fecha: Abril 2014
Volumen: 137
Materias:
Escuela: E.U.I.T. Agrícolas (UPM)
Departamento: Química y Tecnología de Alimentos
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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Resumen

After 14 years under conventional plough tillage (CT) or conservation minimum tillage (MT), the soil available Al, Fe, Mn, Cu and Zn (0-5, 5-15 and 15-30 cm layers) and their plant uptake were evaluated during two years in a ryegrass-maize forage rotation in NW Spain (t emperate-humid region). The three-way ANOVA showed that trace element concentrations in soil were mainly influenced by sampling date, followed by soil depth and tillage system (35-73 %, 7-58 % and 3- 11 % of variance explained, respectively). Excepting for Fe (CT) and Al (CT and MT), the elemental concentrations decreased with depth, the stratification being stronger under MT. For soil available Al, Fe, Mn and Cu, the concentrations were higher in CT than in MT (5-15 and 15-30 cm layers) or were not affected by tillage system (0-5 cm). In contrast, the available Zn contents were higher in MT than CT at the soil surface and did not differ in deeper layers. The concentration of Al, Fe and Cu in crops were not influenced by tillage system, which explain 22 % of Mn variance in maize (CT > MT in the more humid year) and 18 % of Zn variance in ryegrass (MT > CT in both years). However, in the summer crop (maize) the concentrations of Fe, Mn and Zn tended to be higher in MT than in CT under drought conditions, while the opposite was true in the year without water limitation. Therefore, under the studied conditions of climate, soil, tillage and crop rotation, little influence of tillage system on crop nutritive value would be expected. To minimize the potential deficiency of Zn (maize) and Cu (maize and ryegrass) on crop yields the inclusion of these micro-nutrients in fertilization schedule is reco mmended, as well as liming to alleviate Al toxicity on maize crops.

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ID de Registro: 35750
Identificador DC: http://oa.upm.es/35750/
Identificador OAI: oai:oa.upm.es:35750
Depositado por: Memoria Investigacion
Depositado el: 29 Jun 2015 08:24
Ultima Modificación: 01 May 2016 22:56
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