Effect of Pot Size on the Growth of Common Bean in Experiments with Rhizobium

  • Osnar Obede da Silva Aragão
  • Rafael de Almeida Leite
  • Adelson Paulo Araújo
  • Ederson da Conceição JesusEmail author
Short Communication


The initial steps for the selection of microbial inoculants are carried out in pots. The sizes of the pots must be taken into account, since plants respond to different pot sizes. The objective of this study was to verify the effect of pot size on the outcomes of the evaluation of rhizobial inoculants in common beans (Phaseolus vulgaris L.). Two experiments combining three pot sizes (1, 3, and 5 kg of soil) and three N sources (rhizobia, mineral N, and the absence of inoculation and N fertilization) were carried out. In experiment I, the pots received fertilization according to soil mass. In experiment II, the pots received equal amounts of fertilizer. Plants were harvested at the R6/R7 stages and their biomass and nodulation were assessed. Plant growth increased with pot size in both experiments. Although 1-kg pots did not provide phytomass accumulation in the same magnitude as larger pots, they allowed differentiating responses to inoculation and nitrogen fertilization. Thus, when required, 1-kg pots can be used for strain selection assays. When receiving the same amount of nutrients, the pots of 3 kg of soil provided plant development similar to 5-kg pots, showing that soil fertility was more critical than pot size in determining plant growth. Our study revealed that among the evaluated sizes, 3-kg soil pots are best suited for detailed plant growth evaluations in rhizobia experiments. This size adequately differentiates treatments, reduces experimental effort, and may allow a greater number of treatments under evaluation.


Phaseolus vulgaris L. Rhizobium spp Biological nitrogen fixation Pot size 



The authors thank the employees in the greenhouse sector and in the Laboratório de Gramíneas of Embrapa Agrobiologia for their support with the logistics of the experiments.

Funding Information

This work is financially supported by the Brazilian National Council for Scientific and Technological Development (CNPq) and the Carlos Chagas Filho Foundation for the Support of Research in the State of Rio de Janeiro (FAPERJ) (projects 307872/2016-5 and E-26/202.683/2018, respectively); the Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) provided a scholarship to Rafael de Almeida Leite; and CNPq provided fellowships to Ederson da Conceição Jesus (project 475168/2012-7) and Osnar Obede da Silva Aragão.

Compliance with Ethical Standards

Conflict of Interest

The authors declare that they have no conflict of interest.


  1. Afonso S, Arrobas M, Ferreira IQ, Rodrigues MA (2018) Leaf nutrient concentration standards for lemon verbena (Aloysia citrodora Paláu) obtained from field and pot fertilization experiments. JARMAP 33:33–40Google Scholar
  2. Almeida MO, Ferreira EA, Silva DV, Santos JB, Braga RR, Souza BP, Costa SSD (2014) Influence of the cup size and time of evaluation on growth black jack in competition with corn and soybean. Biosci J 30:1428–1437Google Scholar
  3. Arsenault J, Pouleur S, Messier C, Guay R (1995) WinRHIZO, a root measuring system with a unique overlap correction method. HortScience 30:906–906 CrossRefGoogle Scholar
  4. Beltrão NEM, Filho JF, Figuerêdo ICM (2002) Appropriate use of greenhouse in the agricultural experimentation. Rev bras Eng Agríc Ambient 6:547–552CrossRefGoogle Scholar
  5. Brito MMP, Muraoka T, Silva E (2011) Contribuição da fixação biológica de nitrogênio, fertilizante nitrogenado e nitrogênio do solo no desenvolvimento de feijão e caupi. Bragantia 70:206–215CrossRefGoogle Scholar
  6. Brito LF, Pacheco RS, Souza Filho BF, Ferreira EPB, Straliotto R, Araújo AP (2015) Response of common bean to rhizobium inoculation and supplemental mineral nitrogen in two Brazilian biomes. Ver Bras Ciênc Solo 39:981–992CrossRefGoogle Scholar
  7. Dambreville A, Griolet M, Rolland G, Dauzat MA, Bédiée B, Muller CB, Vile JED, Granier C (2016) Phenotyping oilseed rape growth-related traits and their responses to water deficit: the disturbing pot size effect. Funct Plant Biol 44:35–45CrossRefGoogle Scholar
  8. de Mendiburu F, Simon R (2015) Agricolae - Ten years of an open source statistical tool for experiments in breeding, agriculture and biology. PeerJ PrePrints. (UK) 3:e1748v1:17 pGoogle Scholar
  9. Graham PH, Rosas JC, De Jensen CE, Peralta E, Tlusty B, Acosta-Gallegos J, Pereira PAA (2003) Addressing edaphic constraints to bean production: the bean/cowpea CRSP project in perspective. Field Crops Res. 82:179–192CrossRefGoogle Scholar
  10. Hess L, Kroon H (2007) Effects of rooting volume and nutrient availability as an alternative explanation for root self/non-self discrimination. J Ecol 95:241–251CrossRefGoogle Scholar
  11. Hungria M, Mendes IC (2015) Nitrogen fixation with soybean: the perfect symbiosis? In: De Bruijn F (ed) BNF 2, 1005–1019Google Scholar
  12. Hungria M, Vargas MAT (2000) Environmental factors affecting N2 fixation in grain legumes in the tropics, with emphasis on Brazil. Field Crops Res 65:151–164CrossRefGoogle Scholar
  13. Jesus EC, Leite RA, Bastos RA, Aragão OOS, Araújo AP (2018) Co-inoculation of Bradyrhizobium stimulates the symbiosis efficiency of Rhizobium with common bean. Plant Soil 425:201–2015CrossRefGoogle Scholar
  14. Kiaer LP, Weisbach AN, Weiner J (2013) Rootand shoot competition: a meta-analysis. J Ecol 101:1298–1312CrossRefGoogle Scholar
  15. Leite J, Passos SR, Simões-Araújo JL, Rumjanek NG, Xavier R, Zilli JÉ (2018) Genomic identification and characterization of the elite strains Bradyrhizobium yuanmingense BR 3267 and Bradyrhizobium pachyrhizi BR 3262 recommended for cowpea inoculation in Brazil. Braz J Microbiol 49(4):703–713CrossRefGoogle Scholar
  16. Martínez-Romero E, Segovia L, Mercante FM, Franco AA, Graham P, Pardo MA (1991) Rhizobium tropici, a novel species nodulating Phaseolus vulgaris L. beans and Leucaena sp trees. Int J S Bacteriol 41:417–426CrossRefGoogle Scholar
  17. Murphy GP, File AL, Dudley SA (2013) Differentiating the effects of pot size and nutrient availability on plant biomass and allocation. Botany 91:799–803CrossRefGoogle Scholar
  18. Norris DO, T’mannetje L (1964) The symbiotic specialization of African Trifolium spp. in relation to their taxonomy and their agronomic use. E Afr Agr Forestry J 29:214–235CrossRefGoogle Scholar
  19. Poorter HBU, Hler J, Van Dusschoten D, Climent J, Postma JA (2012) Pot size matters: a meta-analysis of the effects of rooting volume on plant growth. Funct Plant Biol 39:839–850CrossRefGoogle Scholar
  20. Tsai SM, Bonetti R, Agbala SM, Rossetto R (1993) Minimizing the effect of mineral nitrogen on biological nitrogen fixation in common bean by increasing nutrient levels. Plant Soil 152:131–138CrossRefGoogle Scholar
  21. Vaknin Y, Dudai N, Murkhovsky L, Gelfandbein L, Fisher R, Degani A (2009) Effects of pot size on leaf production and essential oil content and composition of Eucalyptus citriodora hook.(lemon-scented gum). J. Herbs spices med Plants 15:164–176CrossRefGoogle Scholar
  22. Woomer PL, Singleton PW, Bohlool BB (1988) Reliability of the most-probable-number technique for enumerating rhizobia in tropical soils. Appl Environ Microbiol 54:1494–1497CrossRefGoogle Scholar

Copyright information

© Sociedad Chilena de la Ciencia del Suelo 2020

Authors and Affiliations

  1. 1.Universidade Federal Rural do Rio de Janeiro-UFRRJSeropédicaBrazil
  2. 2.Centro Nacional de Pesquisa de AgrobiologiaEmpresa Brasileira de Pesquisa AgropecuáriaSeropédicaBrazil

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