Agronomic and Economic Efficiency of Common-Bean Inoculation with Rhizobia and Mineral Nitrogen Fertilization

Soares, Bruno Lima; Ferreira, Paulo Ademar Avelar; Rufini, Márcia; Martins, Fábio Aurélio Dias; Oliveira, Dâmiany Pádua; Reis, Ricardo Pereira; Andrade, Messias José Bastos de; Moreira, Fátima Maria de Souza

doi:10.1590/18069657rbcs20150235

Cited by 30 publications

(33 citation statements)

References 16 publications

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“…Production is directed to consumption of tender pods in natura and, at lower volumes, to processing and export. Just as for common bean, nitrogen (N) is the most limiting nutrient for snap bean and the most costly for the vegetable grower (Peixoto and Cardoso 2016;Soares et al 2016). As legumes, both have the capacity for biological fixation of atmospheric N (biological N fixation -BNF) through symbiosis with rhizobia, capable of providing at least part of the N required by the plant for its development, which translates into significant savings in the use of nitrogen fertilizer.…”

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Rhizobium strains selected from the Amazon region increase the yield of snap bean genotypes in protected cultivation

et al. 2018

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Although the use of inoculants containing rhizobia is encouraged, there are no official recommendations for inoculation of snap bean. In this respect, the aim of this study was to evaluate the agronomic performance of Rhizobium strains in symbiosis with snap bean cultivars with different growth habits and crop cycles. The experiment was carried out in pots with soil in a greenhouse in the spring-summer season in Lavras, state of Minas Gerais, Brazil. A completely randomized experimental design was used, with 4 replications, in a 4 × 7 factorial arrangement involving four snap bean cultivars and seven treatments -five strains of Rhizobium (UFLA 02-100, UFLA 02-127, UFLA 04-173, CIAT 899, and PRF 81), plus two controls without inoculation (with and without 500 mg N-NH 4 NO 3 ·dm -3 ). We conclude that: i) while genetic differences were observed among cultivars with respect to nodulating capacity, in all cases significant benefits were observed from BNF inoculation and ii) inoculation with selected strains of Rhizobium, as well as fertilization with mineral N, favors plant growth, snap bean yields, and accumulation of N in the pods and, therefore, can fully substitute nitrogen fertilization in snap bean grown under protected cultivation.

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Rhizobium strains selected from the Amazon region increase the yield of snap bean genotypes in protected cultivation

et al. 2018

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“…The reasons for this reduction are unknown. Usually, increasing SDM levels results in higher biomass and, consequently higher yield (Soares et al, 2016;Saengsanga, 2018). This increase in SDM is due to the inoculation of microorganisms able to produce phytohormones such as auxins, gibberellins and cytokinins (Small and Degenhardt, 2018;Stamenkovic et al;2018).…”

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Rock phosphate fertilization harms Azospirillum brasilense selection by maize

2019

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Maize is the most important crop cultivated worldwide. It needs a significant amount of nitrogen and phosphorus fertilization to maintain high yields. However, the high cost of fertilization makes production more expensive and damages the environment. The present study used Azospirillum brasilense and Bacillus subtilis bacteria in an attempt to supply nitrogen and phosphorus fertilization to a maize crop. The experiment was carried out with maize plants under greenhouse conditions with a factorial scheme (4 x 2 x 2), where the first factor corresponded to bacterial inoculation: (a) control (no inoculation); (b) A. brasilense inoculation (AZ); (c) B. subtilis inoculation (BS) and (d) inoculation with a mixture of (AZ+BS), the second factor corresponded to the presence or absence of rock phosphate fertilization and the third factor corresponded to the presence or absence of top-dressed nitrogen fertilizer. Evaluated plant parameters were height, shoot dry matter (SDM), root dry matter (RDM), and soil parameters were total colony forming units of bacteria (CFU), nitrogen, soluble phosphorus and microbial biomass carbon (MBC). Although some parameters were improved with mineral fertilization in general, the findings showed that there were many adverse effects with the use of rock phosphate fertilization and A. brasilense inoculation. When both were applied together in treatments, there was reduction in plant height, microbial biomass carbon and total number of bacteria compared to treatments without rock phosphate fertilization. These results strongly suggest that rock phosphate harms the ability of A. brasilense to promote plant growth and demonstrate the necessity of new studies to verify whether this negative effect occurs under field conditions and could reduce yields in maize crop production.

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“…For the statistical analysis of the data, we performed the analysis of variance, according to the design adopted. Subsequently, the data were submitted to regression analysis, with curve fitting, according to the parameters evaluated (Soares et al, 2016).…”

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Growth, Gas Exchanges and Maize Productivity Under Potassic Fertilizer Management and Residual Response on Bean

Ribeiro

Neto

Júnior

et al. 2019

JAS

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Potassium (K) is the second nutrient of greater absorption by plants, and it is of fundamental importance for the development of the cultures and acts in the activation of enzymes that participate in the photosynthetic processes. However, there are still doubts about its residual effect on crop succession. Therefore, the objective of the research was to evaluate the effect of K doses on growth, gas exchange and maize yield and its residual effect on bean culture. The experiment was a randomized complete block design, in a 5x2 factorial scheme, totaling 10 treatments, with five K doses (0, 50, 100, 150 and 200 kg ha -1 ) and two fertilization periods (seeding and V5 stadium) in maize plants. Growth parameters, gas exchange and yield were evaluated in maize plants, and growth was evaluated in Bean plants in an experimental area belonging to the Department of Plant Science and Environmental, Federal University of Paraí ba in Northeast Brazil. For the analysis of the data, we performed the analysis of variance, according to the design adopted. Subsequently, the data were submitted to regression analysis, with curve fitting, according to the parameters evaluated. Results revealed that, K fertilization influenced the growth of maize plants in the two fertilization periods (seeding and V5 stadium) at 45 and 75 days after planting, as well as in gas exchange and productivity. Fertilization at the V5 stadium in maize presented higher values compared to fertilization at seeding, in which the dose of 150 kg ha -1 presented the best results at both planting times. In relation to the residual effect of K on bean growth, it was verified that, there was influence of the doses on the growth of plants, in which the dose of 200 kg ha -1 recorded the highest values. The results showed that there is the residual response of K on bean cultivation in succession with maize. For the greater development of maize, it is recommended to use the dose of 150 kg ha -1 at the V5 stage of plants.

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Agronomic and Economic Efficiency of Common-Bean Inoculation with Rhizobia and Mineral Nitrogen Fertilization

Cited by 30 publications

References 16 publications

Rhizobium strains selected from the Amazon region increase the yield of snap bean genotypes in protected cultivation

Rhizobium strains selected from the Amazon region increase the yield of snap bean genotypes in protected cultivation

Rock phosphate fertilization harms Azospirillum brasilense selection by maize

Growth, Gas Exchanges and Maize Productivity Under Potassic Fertilizer Management and Residual Response on Bean

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