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dc.date.accessioned 2017-11-24T12:16:49Z
dc.date.available 2017-11-24T12:16:49Z
dc.identifier.uri https://digital.cic.gba.gob.ar/handle/11746/6435
dc.title Occurrence and distribution of soil Fusarium species under wheat crop in zero tillage en
dc.type Documento de conferencia es
dcterms.abstract The presence of Fusarium species in cultivated soils is commonly associated with plant debris and plant roots. Fusarium species are also soil saprophytes. The aim of this study was to examine the occurrence and distribution of soil Fusarium spp. at different soil depths in a zero tillage system after the wheat was harvested. Soil samples were obtained at three depths (0-5 cm, 5-10 cm and 10-20 cm) from five crop rotations: I, conservationist agriculture (wheat-sorghum-soybean); II, mixed agriculture/livestock with pastures, without using winter or summer forages (wheat-sorghum-soybean-canola-pastures); III, winter agriculture in depth limited soils (wheat-canola-barley-late soybean); IV, mixed with annual forage (wheat-oat/Vicia-sunflower); V, intensive agriculture (wheat-barley-canola, with alternation of soybean or late soybean). One hundred twenty two isolates of Fusarium were obtained and identified as F. equiseti, F. merismoides, F. oxysporum, F. scirpi and F. solani. The most prevalent species was F. oxysporum, which was observed in all sequences and depths. The Tukey’s test showed that the relative frequency of F. oxysporum under intensive agricultural management was higher than in mixed traditional ones. The first 5 cm of soil showed statistically significant differences (p=0.05) with respect to 5-10 cm and 10-20 cm depths. The ANOVA test for the relative frequency of the other species as F. equiseti, F. merismoides, F. scirpi and F. solani, did not show statistically significant differences (p<0.05). We did not find significant differences (p<0.05) in the effect of crop rotations and depth on Shannon, Simpson indexes and species richness. Therefore we conclude that the different sequences and the sampling depth did not affect the alpha diversity of Fusarium community in this system. en
dcterms.extent 8 p. es
dcterms.issued 2013
dcterms.language Inglés es
dcterms.license Attribution-NonCommercial 3.0 Unported (BY-NC 3.0) es
dcterms.subject cultivated soil en
dcterms.subject crop rotation en
dcterms.subject soil depth en
dcterms.subject species diversity en
cic.version info:eu-repo/semantics/submittedVersion es
dcterms.creator.author Silvestro, Luciana es
dcterms.creator.author Stenglein, Sebastián es
dcterms.creator.author Forjan, H. es
dcterms.creator.author Dinolfo, María Inés es
dcterms.creator.author Arambarri, A. M. es
dcterms.creator.author Manso, L. es
dcterms.creator.author Moreno, María Virginia es
cic.lugarDesarrollo Laboratorio de Biología Funcional y Biotecnología es
dcterms.subject.materia Agronomía, reproducción y protección de plantas es
dcterms.identifier.url Recurso Completo es
dcterms.identifier.other DOI: 10.5424/sjar/2013111-3081 es
dcterms.isPartOf.issue vol. 11, no. 1 es
dcterms.isPartOf.series Spanish Journal of Agricultural Research es
cic.isPeerReviewed true es
cic.isFulltext true es


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