Growth and Nitrogen Uptake by Potato and Cassava Crops Can Be Improved by Azospirillum brasilense Inoculation and Nitrogen Fertilization

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dc.contributor.authorFernandes, Adalton Mazetti [UNESP]
dc.contributor.authorda Silva, Jessica Aparecida [UNESP]
dc.contributor.authorEburneo, Juliana Aparecida Marques [UNESP]
dc.contributor.authorLeonel, Magali [UNESP]
dc.contributor.authorGarreto, Francisca Gyslane de Sousa [UNESP]
dc.contributor.authorNunes, Jason Geter da Silva [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.date.accessioned2023-07-29T13:48:47Z
dc.date.available2023-07-29T13:48:47Z
dc.date.issued2023-03-01
dc.description.abstractNitrogen (N) is the nutrient most taken up by potato and cassava crops and Azospirillum brasilense may contribute to the growth of these crops. Pot experiments evaluated A. brasilense and mineral N application on leaf N concentration, plant growth, and N uptake by potato and cassava grown under natural and disinfected soil. The rates of 2.8 × 108 colony-forming units mL−1 of A. brasilense combined with 0, 75, 150, and 300 mg dm−3 N or 0, 50, 100, and 200 mg dm−3 N were used for potato or cassava grown. At low N supply in natural soil, A. brasilense inoculation increased N concentration in potato leaves by 23–38%, without benefits to plant growth or N uptake. At unfertilized N treatments of both soils, A. brasilense inoculation increased cassava leaf N concentration by 25–33%, but an 11–32% increase in shoot biomass occurred in treatments inoculated and N supplied. Potato crops responded positively to mineral N supply, but cassava responded to fertilization only in disinfected soil. In disinfected soil fertilized with N, A. brasilense inoculation increased cassava N uptake by 27–40%. In contrast, in natural soil, A. brasilense minimized the negative effect of N excess on the tuber development of cassava. These results show that the use of A. brasilense is a more interesting alternative to improve N status and growth in cassava than in potatoes.en
dc.description.affiliationCenter of Tropical Roots and Starches (CERAT) São Paulo State University (UNESP), Av. Universitária, 3780, Lageado Experimental Farm, São Paulo
dc.description.affiliationCollege of Agricultural Sciences São Paulo State University (UNESP), Av. Universitária, 3780, Lageado Experimental Farm, São Paulo
dc.description.affiliationUnespCenter of Tropical Roots and Starches (CERAT) São Paulo State University (UNESP), Av. Universitária, 3780, Lageado Experimental Farm, São Paulo
dc.description.affiliationUnespCollege of Agricultural Sciences São Paulo State University (UNESP), Av. Universitária, 3780, Lageado Experimental Farm, São Paulo
dc.identifierhttp://dx.doi.org/10.3390/horticulturae9030301
dc.identifier.citationHorticulturae, v. 9, n. 3, 2023.
dc.identifier.doi10.3390/horticulturae9030301
dc.identifier.issn2311-7524
dc.identifier.scopus2-s2.0-85151434450
dc.identifier.urihttp://hdl.handle.net/11449/248609
dc.language.isoeng
dc.relation.ispartofHorticulturae
dc.sourceScopus
dc.subjectgrowth-promoting bacteria
dc.subjectnitrogen fixation
dc.subjecttuber crops
dc.titleGrowth and Nitrogen Uptake by Potato and Cassava Crops Can Be Improved by Azospirillum brasilense Inoculation and Nitrogen Fertilizationen
dc.typeArtigo
unesp.author.orcid0000-0002-6745-0175[1]
unesp.author.orcid0000-0001-7896-2398[4]
unesp.author.orcid0000-0002-6349-4808[5]

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