Open Access

ARTICLE

Nitrogen fertilization of irrigated soybean

Brevedan RE, MN Fioretti, SS Baioni, IR Palomo, H Laborde

Departamento de Agronomía, Universidad Nacional del Sur y CERZOS, CONICET. 8000 Bahía Blanca, Argentina.

* Corresponding Author:Address Correspondence to: Dr. Roberto E Brevedan, e-mail:

Phyton-International Journal of Experimental Botany 2007, 76(all), 153-167. https://doi.org/10.32604/phyton.2007.76.153

Abstract

A long-term study was conducted at different locations of Southwestern Buenos Aires to evaluate the effects of N fertilization at different growth stages of soybean on yield, plant nitrogen concentration and seed protein and oil concentrations. Yields were increased in six out of ten trials, and the response was highest with N fertilization at the beginning of grain development (R5). Different nitrogen sources were applied at seeding which gave higher yields and increased seed protein content than the non-fertilized, non-nodulated treatment. Urea was the most effective N source.

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Keywords

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