Effects of conventional and organic nitrogen fertilizers on soil microbial activity, mycorrhizal colonization, leaf antioxidant content, and Fusarium wilt in highbush blueberry (Vaccinium corymbosum L.)

Montalba, R.; Arriagada C.; Alvear, M; ZUNIGA, GE

Abstract

A study was conducted in the greenhouse to determine the effects of conventional and organic nitrogen (N) fertilizer on Fusarium wilt, caused by Fusarium solani, in northern highbush blueberry (Vaccinium corymbosum L. 'Legacy'). Root colonization by mycorrhizal fungi, soil microbial activity, and leaf antioxidants content was also measured the treatments. Plants grown with organic N fertilizer exhibited a lower incidence of Fusarium wilt than those grown with conventional N fertilizer (5% and 30% by the end of the experiment, respectively). Organic fertilizer also increased the soil biota activity, mycorrhizal colonization, and leaf antioxidant content relative to conventional N source. The results suggest that organic N fertilizer may improve the tolerance of blueberry to soil pathogens, such as F. solani. (C) 2010 Elsevier B.V. All rights reserved.

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Título según WOS: Effects of conventional and organic nitrogen fertilizers on soil microbial activity, mycorrhizal colonization, leaf antioxidant content, and Fusarium wilt in highbush blueberry (Vaccinium corymbosum L.)
Título según SCOPUS: Effects of conventional and organic nitrogen fertilizers on soil microbial activity, mycorrhizal colonization, leaf antioxidant content, and Fusarium wilt in highbush blueberry (Vaccinium corymbosum L.)
Título de la Revista: SCIENTIA HORTICULTURAE
Volumen: 125
Número: 4
Editorial: ELSEVIER SCIENCE BV
Fecha de publicación: 2010
Página de inicio: 775
Página final: 778
Idioma: English
URL: http://linkinghub.elsevier.com/retrieve/pii/S0304423810002128
DOI:

10.1016/j.scienta.2010.04.046

Notas: ISI, SCOPUS