Riego complementario en un argiudol típico de la pampa ondulada Argentina bajo siembra directa : efectos sobre algunas propiedades químicas y físicas del suelo

• Autores: Torres Duggan, Martín; Alvarez, Carina Rosa; Taboada, Miguel Angel; Celesti, Tomás; Vignarolli, Federico; D'Ambrosio, Diego
• Año de publicación: 2012
• Idioma: español castellano
• Tipo de recurso: artículo
• Fuente: Ciencia del suelo : revista de la Asociación Argentina de la Ciencia del Suelo; Vol.30, no.2; 201-207; http://www.suelos.org.ar/
• Materia: CHEMICAL PROPERTIES; IRRIGATION; NO TILLAGE; PHYSICAL PROPERTIES; INFILTRATION; INSTABILITY; IRRIGATION SYSTEM; ORGANIC MATTER; PHYSICOCHEMICAL PROPERTY; SOIL CHEMISTRY; SOIL PROPERTY; SOIL WATER; TILLAGE; ARGENTINA
• Institución: Universidad de Buenos Aires. Facultad de Agronomía

Fil: Torres Duggan, Martín. Tecnoagro. Buenos Aires, Argentina.
Fil: Alvarez, Carina Rosa. Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Ingeniería Agrícola y Uso de la Tierra. Cátedra de Fertilidad y Fertilizantes. Buenos Aires, Argentina.
Fil: Taboada, Miguel Angel. Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Ingeniería Agrícola y Uso de la Tierra. Cátedra de Fertilidad y Fertilizantes. Buenos Aires, Argentina.
Fil: Taboada, Miguel Angel. CONICET. Buenos Aires, Argentina.
Fil: Taboada, Miguel Angel. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Suelos (INTA-CIRN). Hurlingham, Buenos Aires, Argentina.
Fil: Celesti, Tomás. Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Ingeniería Agrícola y Uso de la Tierra. Cátedra de Fertilidad y Fertilizantes. Buenos Aires, Argentina.
Fil: Vignarolli, Federico. Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Ingeniería Agrícola y Uso de la Tierra. Cátedra de Fertilidad y Fertilizantes. Buenos Aires, Argentina.
Fil: D'Ambrosio, Diego. Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Ingeniería Agrícola y Uso de la Tierra. Cátedra de Fertilidad y Fertilizantes. Buenos Aires, Argentina.
Supplementary irrigation increases and stabilizes crop yields. However, when irrigation water of poor quality is applied, it can adversely affect soil properties. The objective of this study was to: evaluate the influence of supplementary irrigation on some physical and chemical properties under no- till cultivation systems. A field experiment was performed on a loamy Typical Argiudoll, managed under no- tillage. The treatments were: 1-Irrigated soil during 13 years, 2-Adjacent Rainfed soil. Soil chemical (pH, electric conductivity, exchangeable sodium percentage, organic carbon, total N, exchangeable cations, cation exchange capacity, extractable P) and physical properties (infiltration rate, soil penetration resistance, bulk density, gravimetric water content, structural instability) were evaluated. Irrigation significantly increased the pH and exchangeable sodium percentage (P less than 0.05), while electric conductivity was slightly affected. Although the mean soil infiltration rate in the Irrigated treatment was lower than in the Rainfed one, it was not able to detect significant differences between treatments because of the high variability in the irrigated treatment. Regarding soil physical properties, supplementary irrigation did not affect bulk density. Soil penetration resistance (0-40 cm) was high (greater to 2Mpa) in both treatments, probably due to the effects of the cultivation and harvest machinery under high soil water contents. The soil structural instability was very low (i.e. high structural stability) in both treatments, probably associated to the high organic matter content and the no- till cultivation system.