SciELO - Scientific Electronic Library Online

vol.82 número1Acumulación de nanopartículas de plata y su efecto en la capacidad antioxidante en Allium cepa LMicropropagación de vides silvestres (Vitis spp.) del centro de México índice de autoresíndice de materiabúsqueda de artículos
Home Pagelista alfabética de revistas  

Servicios Personalizados




  • No hay articulos citadosCitado por SciELO

Links relacionados


Phyton (Buenos Aires)

versión On-line ISSN 1851-5657


COPPERI, MZ; MANDOLESI, ME; CANTAMUTTO, MA  y  RON, MM. Comparative effectiveness of two nitrogen sources for corn fertilization. Phyton (B. Aires) [online]. 2013, vol.82, n.1, pp.99-106. ISSN 1851-5657.

Corn has not only a high growth potential and a great capacity of biological response to suitable crop management but also may contribute to a better match of crops with environmental offer in Argentina. Nitrogen (N) fertilization must make provision for eventual N losses, and fertilization strategies must be designed so as to minimize their global incidence. The diferent quick-release N sources show similar efciencies when they are incorporated, but in surface applications, sources that contain little or no amidic N have a better performance than urea (U). The objective of this paper was to make an evaluation of corn response to N applied in V6 without incorporation, using two different solid N sources. A field experiment was carried out during 2004, in a farm located 30 km away from General Pico (La Pampa, Argentina), to evaluate corn response to N rates (0 - 120 kg/ha) sidedressed in V6 without incorporation, using U or a commercial mixture of ammonium nitrate and dolomite (ND). Rainfall and temperatures were ideal during the crop cycle. The excellent growing conditions reflected in high corn yields. The results showed that N fertilization afected virtually all yield components. Yield was on average 2417 kg of grain/ha greater in the ND than in the U treatments. For a N rate below 85 kg/ha, agronomic efficiency was of 65 and 87 kg of corn per kg of applied N for U and ND, respectively. Apparent fertilizer N recovery was 1.14 and 1.34 kg absorbed N per kg applied N for U and ND, respectively. For the kind of soil, cultivar and growing conditions of the experiment, a substitution value of 1.6 can be used to estimate ND-N rates from models developed for U-N.

Palabras clave : Fertilizer technology; Nitrogen recovery; Substitution value.

        · resumen en Español     · texto en Inglés     · Inglés ( pdf )


Creative Commons License Todo el contenido de esta revista, excepto dónde está identificado, está bajo una Licencia Creative Commons