Production and postharvest quality of jambu in hydroponics under nitrogen application in nutrient solution

Sampaio, Italo Marlone Gomes; Júnior, Mário Lopes da Silva; Bittencourt, Ricardo Falesi de Moraes Palha; Santos, Gabriel Anderson Martins dos; Lemos, Hozano de Souza

doi:10.5935/1806-6690.20210021

Cited by 3 publications

(4 citation statements)

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“…The nutrients N and K show high mobility in the phloem and a large degree of translocation (Silva et al, 2020;Sampaio et al, 2021). As the reproductive organs have priority, these nutrients are commonly mobilized from the leaf to the fruit (Dias et al, 2013).…”

Section: Resultsmentioning

confidence: 99%

Nutritional diagnosis of mango plants post-harvest in anticipation of pre-flowering avoids nutritional stress

Rezende

Freire

Silva

et al. 2023

Rev. bras. eng. agríc. ambient.

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The São Francisco Valley region of Brazil is a leading exporter of mango fruits. Previous nutritional diagnosis can identify stresses, provide adjustments for nutritional limitations, and promote more efficient fertilization and nutrient management. This study aimed to compare the nutritional diagnosis of mango trees in the post-harvest and pre-flowering phases and to correlate them with productivity. Norms and indices of the Integrated System of Diagnosis and Recommendation (DRIS), as well as the Nutritional Balance Index and the Potential of Response to Fertilization were generated for each phenological phase of the mango trees. Optimal concentrations and ranges of nutrients were established, classified as deficient, balanced, or excessive, and subsequently compared to each other and to values recommended in the literature. The indices were correlated with the productivity of the orchards in each phenological phase of the mango trees. When comparing the DRIS norms of post-harvest and pre-flowering phenological phases, 55% of the averages differed. The sufficiency ranges of the post-harvest and pre-flowering phases were generally different from those referenced in the literature. Nutritional diagnoses for P, K, Ca, Mg, S, Zn, and Cl altered between phenological phases. The nutritional diagnosis performed in the post-harvest phase showed that nutritional imbalance affected productivity.

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Section: Resultsmentioning

confidence: 99%

Nutritional diagnosis of mango plants post-harvest in anticipation of pre-flowering avoids nutritional stress

Rezende

Freire

Silva

et al. 2023

Rev. bras. eng. agríc. ambient.

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“…The seedlings were produced by sowing in polystyrene trays (128 cells) filled with coconut fiber substrate, at a density of three seeds per cell. The substrate has the following chemical characteristics according to Sampaio et al (2021): 42 mg kg -1 of N, 21 mg kg -1 of P, 22 mg kg -1 of K, 186 mg kg -1 of Ca, 39 mg kg -1 of Mg, 37 mg kg -1 of S, 1 mg kg -1 of B, 5 mg kg -1 of Cu, 14 mg kg -1 of Fe, 3 mg kg -1 of Mn, 2 mg kg -1 of Mo, and 4 mg kg -1 of Zn.…”

Section: Methodsmentioning

confidence: 99%

“…For titratable acidity (TA), values between 0.085 and 0.139% were observed in the lettuce leaves, with higher levels in the Mônica and Olinda cultivars. The TA content interferes negatively in the palatability of vegetable products when in very high proportions relative to TSS; however, it contributes to making the vegetable material resistant to microbiological degradation, increasing the shelf life (Chitarra & Chitarra, 2005;Sampaio et al, 2021).…”

Section: /8mentioning

confidence: 99%

Morphophysiology and postharvest quality of hydroponic lettuce cultivars grown under high temperature

Bittencourt,

Silva Júnior,

Sampaio

et al. 2024

Rev. bras. eng. agríc. ambient.

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Lettuce (Lactuca sativa) is the most economically important leafy vegetable in Brazil, with the crisp type being the most popular among producers. However, in regions with hot climates, lettuce has production limitations due to bolting, requiring knowledge on the behavior of cultivars available on the market. Thus, the objective of the present study was to characterize the performance of crisp lettuce cultivars in terms of their productive, physiological, and postharvest quality aspects when grown under hydroponic cultivation and high temperature conditions. The assay was performed in a greenhouse and the plants were grown in a hydroponic system of DFT type. The average temperature during the experiment was 30.33 °C. The experimental design used was completely randomized with nine treatments (Veneranda, Cristina, Olinda, Mônica, Cinderela, Grand Rapids, Itapuã Super, Crocantela, and Simpson Black Seed), with four replications. The cultivars were analyzed in terms of their productive, physiological, and postharvest quality performances. The Olinda and Cristina cultivars showed the best performance in growth, physiological, and postharvest variables. However, the cultivars had distinct sensory characteristics. Bolting negatively affected gas exchange, production, and postharvest quality of lettuce cultivars Veneranda, Mônica, Grand Rapids, and Cinderela. In addition, it was observed that the pigment content was not determinant for the expression of bolting. Therefore, this study recommends the use of cultivars Olinda and Cristina for the hydroponic cultivation under high temperature conditions.

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“…Several parameters of jambù hydroponic culture have been evaluated in response to an increasing concentration of nitrogen (N) in the nutrient solution, given its importance for optimal growth [ 37 ]. The change in N concentration resulted in an effect on growth, yield, and post-harvest quality and the optimal concentration for best performance was 21 mmol L −1 [ 42 ]. Furthermore, Nascimento et al evaluated the influence of the type of cultivation, hydroponic or conventional, on the chemical profile of leaves, flowers, and stems of A. oleracea .…”

Section: Cultivation and Micropropagationmentioning

confidence: 99%

A Review of the Chemistry and Biological Activities of Acmella oleracea (“jambù”, Asteraceae), with a View to the Development of Bioinsecticides and Acaricides

Ferrati

Baldassarri

Cappellacci

et al. 2022

Plants

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Human pathologies, environmental pollution, and resistance phenomena caused by the intensive use of chemical pesticides have shifted the attention of the agrochemical industries towards eco-friendly insecticides and acaricides. Acmella oleracea (L.) R. K. Jansen (jambù) is a plant native to South America, widely distributed and cultivated in many countries due to its numerous pharmacological properties. This review analyzes literature about the plant, its uses, and current knowledge regarding insecticidal and acaricidal activity. Acmella oleracea has proven to be a potential pesticide candidate against several key arthropod pest and vector species. This property is inherent to its essential oil and plant extract, which contain spilanthol, the main representative of N-alkylamides. As a result, there is a scientific basis for the industrial exploitation of jambù in the preparation of green insecticides. However, studies related to its toxicity towards non-target species and those aimed at formulating and developing marketable products are lacking.

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Production and postharvest quality of jambu in hydroponics under nitrogen application in nutrient solution

Cited by 3 publications

References 0 publications

Nutritional diagnosis of mango plants post-harvest in anticipation of pre-flowering avoids nutritional stress

Nutritional diagnosis of mango plants post-harvest in anticipation of pre-flowering avoids nutritional stress

Morphophysiology and postharvest quality of hydroponic lettuce cultivars grown under high temperature

A Review of the Chemistry and Biological Activities of Acmella oleracea (“jambù”, Asteraceae), with a View to the Development of Bioinsecticides and Acaricides

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