Technical and economic feasibility of irrigated wheat as a function of nitrogen doses, sources, and inoculation with Azospirillum brasilense

Galindo, Fernando Shintate; Filho, Marcelo Carvalho Minhoto Teixeira; Tarsitano, Maria Aparecida Anselmo; Buzetti, Salatiér; Santini, José Mateus Kondo; Ludkiewicz, Mariana Gaioto Ziolkowski; Alves, Cleiton José

doi:10.5433/1679-0359.2018v39n1p51

Cited by 7 publications

(3 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The increase in N accumulation in lettuce and arugula plants with the A. brasilense inoculation via foliar and nutrient solution may occur due to the increase in the efficiency of absorption and use of fertilizers, as well as the occurrence of biological N fixation. The Ab-V5 and Ab-V6 strains of A. brasilense used in the study have similar nif and fix genes that confer their ability to fix atmospheric nitrogen (Hungria et al, 2018), which in symbiosis with plants increase the available nitrogen for plants to absorb and use in addition to reducing nitrogen fertilization costs (Galindo et al, 2018).…”

Section: Resultsmentioning

confidence: 99%

Inoculation methods of Azospirillum brasilense in lettuce and arugula in the hydroponic system

Oliveira

Gato

Moreira

et al. 2023

Rev. bras. eng. agríc. ambient.

View full text Add to dashboard Cite

Lettuce and arugula are the most cultivated leafy vegetables in hydroponic systems in the world, and the little information about Azospirillum brasilense effects in research in this system makes it necessary to verify the best method of inoculation of these bacteria. Therefore, this study aimed to verify the beneficial effects of inoculation methods of A. brasilense on plant growth and nutrition of lettuce and arugula grown in the hydroponic system. The study was conducted in a greenhouse with 30% shading. A randomized block design with five replicates in a 4 × 2 factorial scheme was used. Four A. brasilense inoculation methods (non-inoculated, foliar application, nutrient solution, and nutrient solution + foliar application) and two leafy vegetable species - arugula and lettuce - were evaluated. All inoculation methods improved plant height, shoot fresh and dry mass, root fresh and dry mass, fresh leaf yield, leaf chlorophyll index, accumulation of nitrogen, potassium, calcium, sulfur, phosphorus, iron, manganese, and copper and reduced nitrate accumulation in shoot and root of arugula and lettuce. Inoculation via nutrient solution + foliar application of A. brasilense is the most suitable for hydroponic arugula cultivation because it provides greater fresh leaf yield. All inoculation methods increased leaf yield in hydroponic lettuce. Hydroponic arugula and lettuce plants showed greater accumulation of nutrients and plant growth with less nitrate accumulation in the shoot under inoculation with A. brasilense.

show abstract

Section: Resultsmentioning

confidence: 99%

Inoculation methods of Azospirillum brasilense in lettuce and arugula in the hydroponic system

Oliveira

Gato

Moreira

et al. 2023

Rev. bras. eng. agríc. ambient.

View full text Add to dashboard Cite

show abstract

“…Besides TOC, the study considered other expenses and interest rates, representing 5.0% of EOC (Matsunaga et al, 1976), thus resulting in the total operating cost (TOC), which was extrapolated to one hectare. This methodology has been previously used in several studies on economic evaluation of crops [Kappes et al (2015), Portugal et al (2016), Galindo et al (2017b) and Galindo et al (2018b)].…”

Section: Methodsmentioning

confidence: 99%

Technical and economic viability of cowpea co-inoculated with Azospirillum brasilense and Bradyrhizobium spp. and nitrogen doses

Galindo

Filho

Silva

et al. 2020

Rev. bras. eng. agríc. ambient.

View full text Add to dashboard Cite

Biological nitrogen fixation efficiency can be increased by co-inoculation with Bradyrhizobium spp. and Azospirillum brasilense, allowing even greater uptake of water and nutrients, leading to higher yields and enabling the insertion of unusual crops, such as cowpea (Vigna unguiculata L. Walp.), in the agricultural production system in the Cerrado region of Brazil. Thus, this study aimed to evaluate the technical and economic viability of cowpea in the Cerrado region, as a function of N doses and co-inoculation of seeds with Azospirillum brasilense and Bradyrhizobium. The study was carried out in a no-tillage system in Selvíria, MS, Brazil. The experimental design was a randomized block design, with four repetitions, arranged in a 3 x 5 factorial scheme, corresponding to three types of inoculation (without inoculation - control, with two strains of Bradyrhizobium spp. SEMIA 6462 and SEMIA 6463 - the conventional inoculation of cowpea, and these two strains of Bradyrhizobium spp. plus A. brasilense strains Ab-V5 and Ab-V6); and five N doses (0, 20, 40, 80 and 160 kg ha-1), as urea, applied as topdressing. The following evaluations were performed: grain yield, total operating cost, effective operating cost, gross revenue, operating profit, profitability index, equilibrium price and equilibrium yield. Co-inoculation with A. brasilense increases cowpea grain yield, which makes cowpea production in the Cerrado region of Brazil technically and economically viable, without the need to apply N fertilizers in topdressing.

show abstract

“…Brazil has a deficit of approximately 60% between production and consumption (Companhia Nacional de Abastecimento [CONAB], 2020), making it dependent on imports from countries such as Argentina, Canada, and the United States. Among the main obstacles to the development of wheat cultivation in Brazil are the lack of public policies, adverse climate conditions, high production costs, and low profitability (Galindo et al, 2018). Chemical fertilizers, especially nitrogen fertilizers, represent a high cost in production, reaching up to 30% of the total costs (CONAB, 2020).…”

Section: Introductionmentioning

confidence: 99%

Co-inoculation and inoculation methods of plant growth-promoting bacteria in wheat yield performance

Perini

Zeffa

Roesler

et al. 2021

Semina: Ciênc. Agrár.

View full text Add to dashboard Cite

Several studies have reported the beneficial effects of inoculation of Azospirillum brasilense in wheat, but only a few of them have related the co-inoculation of A. brasilense and Rhizobium sp. and the evaluation of different inoculation methods. This study aimed i) to verify the efficiency of plant growth-promoting bacteria (PGPB) in subtropical environments, ii) to verify the efficiency of co-inoculation of A. brasilense and Rhizobium sp., and iii) to verify the efficiency of the management of different inoculation methods in the wheat crop. The experiments were carried out in Londrina and Apucarana, State of Paraná, Brazil, under a complete randomized block design, with four replications and nine treatments: T1) absence of nitrogen (N) topdressing, T2) 30 kg ha−1 of N topdressing, T3) 60 kg ha−1 of N topdressing, T4) A. brasilense Ab-V5 in the seeds, T5) A. brasilense Ab-V5 in post-emergence, T6) A. brasilense Ab-V5 + Rhizobium sp. 53GRM1 in the seeds, T7) A. brasilense Ab-V5 + Rhizobium sp. 53GRM1 in post-emergence, T8) commercial inoculant (A. brasilense Ab-V5 + Ab-V6) in the seeds, and T9) commercial inoculant (A. brasilense Ab-V5 + Ab-V6) in post-emergence. The number of ears per linear meter, number of spikelets, number of grains per spikelet, number of grains per ear, thousand-grain weight, number of spikelets to ears ratio, leaf nitrogen content, and grain yield were evaluated. Leaf N content and yield components showed no alterations due to the inoculation and co-inoculation performed both in the seed and in the post-emergence of seedlings. Treatments T3, T7, and T9 showed the highest means of grain yield (2077.50, 1743.12, and 1660.62 kg ha−1, respectively), demonstrating that co-inoculation with A. brasilense Ab-V5 + Rhizobium sp. 53GRM1 and inoculation with A. brasilense Ab-V5 + Ab-V6, both in post-emergence of seedlings, have the potential to replace the topdressing nitrogen fertilization in wheat.

show abstract

Technical and economic feasibility of irrigated wheat as a function of nitrogen doses, sources, and inoculation with Azospirillum brasilense

Cited by 7 publications

References 19 publications

Inoculation methods of Azospirillum brasilense in lettuce and arugula in the hydroponic system

Inoculation methods of Azospirillum brasilense in lettuce and arugula in the hydroponic system

Technical and economic viability of cowpea co-inoculated with Azospirillum brasilense and Bradyrhizobium spp. and nitrogen doses

Co-inoculation and inoculation methods of plant growth-promoting bacteria in wheat yield performance

Contact Info

Product

Resources

About