Nutrition and yield of hydroponic arugula under inoculation of beneficial microorganisms

Gato, Isabela Martins Bueno; Oliveira, Carlos Eduardo da Silva; Oliveira, Thaissa Julyanne Soares Sena; Jalal, Arshad; Moreira, Vitória de Almeida; Giolo, Victoria Moraes; Vitória, Letícia Schenaide; Lima, Bruno Horschut de; Vargas, Pablo Forlán; Filho, Marcelo Carvalho Minhoto Teixeira

doi:10.1007/s13580-022-00476-w

Cited by 8 publications

(3 citation statements)

References 47 publications

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“…The increase in the accumulation of these nutrients was also observed in sugarcane under inoculation with B. subtilis (Fonseca et al, 2022). Other research with foliar inoculation with T. harzianum and A. brasilense in lettuce and arugula in the hydroponic system provided greater root growth and, consequently, greater acquisition of nutrients by the plants, in addition to providing less use of fertilizers (Moreira et al, 2022;Oliveira et al, 2022;Gato et al, 2023). Inoculation with B. subtilis via nutrient solution in arugula plants provided an increase of 6%, 43%, 36%, 52%, and 45% in the accumulation of N, K, Ca, Mg, and S in the shoots, respectively, and provided an increase of 32%, 107%, 6%, 65%, and 19% in the accumulation of N, P, K, Ca, and S in the roots, respectively (Oliveira et al, 2023b).…”

Section: Discussionmentioning

confidence: 73%

Yield, nutrition, and leaf gas exchange of lettuce plants in a hydroponic system in response to Bacillus subtilis inoculation

Oliveira,

Jalal,

Aguilar

et al. 2023

Front. Plant Sci.

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Inoculation with Bacillus subtilis is a promising approach to increase plant yield and nutrient acquisition. In this context, this study aimed to estimate the B. subtilis concentration that increases yield, gas exchange, and nutrition of lettuce plants in a hydroponic system. The research was carried out in a greenhouse in Ilha Solteira, Brazil. A randomized block design with five replications was adopted. The treatments consisted of B. subtilis concentrations in nutrient solution [0 mL “non-inoculated”, 7.8 × 103, 15.6 × 103, 31.2 × 103, and 62.4 × 103 colony forming units (CFU) mL−1 of nutrient solution]. There was an increase of 20% and 19% in number of leaves and 22% and 25% in shoot fresh mass with B. subtilis concentrations of 15.6 × 103 and 31.2 × 103 CFU mL−1 as compared to the non-inoculated plants, respectively. Also, B. subtilis concentration at 31.2 × 103 CFU mL−1 increased net photosynthesis rate by 95%, intercellular CO2 concentration by 30%, and water use efficiency by 67% as compared to the non-inoculated treatments. The concentration of 7.8 × 103 CFU mL−1 improved shoot accumulation of Ca, Mg, and S by 109%, 74%, and 69%, when compared with non-inoculated plants, respectively. Inoculation with B. subtilis at 15.6 × 103 CFU mL−1 provided the highest fresh leaves yield while inoculation at 15.6 × 103 and 31.2 × 103 CFU mL−1 increased shoot fresh mass and number of leaves. Concentrations of 7.8 × 103 and 15.6 × 103 increased shoot K accumulation. The concentrations of 7.8 × 103, 15.6 × 103, and 31.2 × 103 CFU mL−1 increased shoot N accumulation in hydroponic lettuce plants.

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Section: Discussionmentioning

confidence: 73%

Yield, nutrition, and leaf gas exchange of lettuce plants in a hydroponic system in response to Bacillus subtilis inoculation

Oliveira,

Jalal,

Aguilar

et al. 2023

Front. Plant Sci.

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“…The positive effect of inoculation via nutrient solution in a hydroponic system without soil is still unknown because, in the via foliar inoculation in lettuce hydroponic increases leaf chlorophyll index; it results in higher photosynthetic efficiency and favors greater plant growth and matter accumulation in plant tissues (Moreira et al, 2022), as observed in arugula hydroponic under foliar inoculation with A. brasilense (Gato et al, 2023). The balance between the plant and the A. brasilense contributes to better plant growth and development since plant-associated microbial communities play a significant role in plant growth, plant nutrition, and the carbon and/or nitrogen cycles (Vacheron et al, 2015).…”

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.

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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.

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“…It has been previously reported that inoculation with A. brasilense via leaves (dose 300 mL 250 L −1 ) in hydroponic cultivation favored root growth, which helped the plants achieve high accumulation of N, P, K, Ca, Zn, Cu, Mn, and Fe in lettuce [10]. Also, inoculation with A. brasilense via leaves (dose 300 mL 250 L −1 ) provided a higher concentration of N, P, K, Ca, Mg, and S in leaves of hydroponic arugula [9,29]. Inoculation with A. brasilense strains AbV5 and AbV6 (dose 10 mL 100 L −1 ) via nutrient solution promoted the growth of arugula plants in relation to non-inoculated treatments [14].…”

Section: Discussionmentioning

confidence: 99%

Inoculation with Azospirillum brasilense Strains AbV5 and AbV6 Increases Nutrition, Chlorophyll, and Leaf Yield of Hydroponic Lettuce

da Silva Oliveira,

Jalal,

Vitória

et al. 2023

Plants

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Inoculation with Azospirillum brasilense has promisingly increased plant yield and nutrient acquisition. The study aimed to estimate the dose of A. brasilense that increases yield, gas exchange, nutrition, and foliar nitrate reduction. The research was carried out in a greenhouse at Ilha Solteira, in a hydroponic system in randomized blocks with four replicates. The treatments consisted of doses of inoculation with A. brasilense strains AbV5 and AbV6 via nutrient solution (0, 8, 16, 32, and 64 mL 100 L−1). Inoculation with A. brasilense at calculated doses between 20 and 44 mL provided the highest fresh and dry mass of shoots and roots, number of leaves, and leaf yield. In addition, the calculated doses of inoculation with A. brasilense increased the accumulation of N, P, K, Ca, Mg, S, B, Fe, Mn, and Zn in shoots and roots, except the accumulation of Ca in roots. It also increased cell membrane integrity index (15%), relative water content (13%), net photosynthesis rate (85%), intracellular CO2 concentration (15%), total chlorophyll (46%), stomatal conductance (56%), transpiration (15%), and water use efficiency (59%). Hence, inoculation with A. brasilense at doses between 20 and 44 mL 100 L−1 is considered the best approach for increasing the growth, yield, accumulation of nutrients, and gas exchange of hydroponically grown iceberg lettuce.

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Nutrition and yield of hydroponic arugula under inoculation of beneficial microorganisms

Cited by 8 publications

References 47 publications

Yield, nutrition, and leaf gas exchange of lettuce plants in a hydroponic system in response to Bacillus subtilis inoculation

Yield, nutrition, and leaf gas exchange of lettuce plants in a hydroponic system in response to Bacillus subtilis inoculation

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

Inoculation with Azospirillum brasilense Strains AbV5 and AbV6 Increases Nutrition, Chlorophyll, and Leaf Yield of Hydroponic Lettuce

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