Agronomic performance of jambu (Acmella oleracea) using organic fertilization

Souto, Gilberta Carneiro; Grangeiro, Leílson Costa; Gusmão, Sérgio Antônio Lopes de; Sousa, Valdivia de Fátima Lima de; Cavalcante, Antônio Elson Cunha; França, Francisco Diorge de

doi:10.21475/ajcs.18.12.01.pne819

Cited by 7 publications

(13 citation statements)

References 10 publications

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“…In addition, it is a constituent of molecules such as chlorophyll, proteins, RNA and DNA (Taiz et al, 2017). In this sense, it can be noted that the greater availability of N had a positive effect on the growth of the aerial part of the jambu, as observed in other studies with the species (Borges et al, 2014;Souto et al, 2018;Aviz et al, 2020). It was equally detected that the application of lime associated with nitrogen fertilization obtained the maximum value of LAP from the plants, which can be explained by the increase in the levels of some essential nutrients in the soil solution (Table 2) promoted by liming, such as Ca and Mg, since these elements act in processes of protein synthesis, carbohydrates and growth regulation (Atkinson, 2014;Engels, 2012).…”

Section: Growthsupporting

confidence: 70%

Nitrogen Fertilization and Liming Improves Growth, Production, Gas Exchange and Post-Harvest Quality of Yellow Flower Jambu

Costa

Júnior²,

Sampaio³

et al. 2020

JAS

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Jambu is a vegetable, widely consumed in the Brazilian North Region, both in typical foods and medicinal herb. Despite its versatility, there are uncountable challenges in relation to its cultivation, especially with regard to the availability of information on nutritional management, such as the lack of data on the effect of liming associated with the supply of nitrogen (N) on the production performance of the crop. Thus, the effect of nitrogen fertilization and liming on growth, production, physiological responses and post-harvest quality of the yellow-flowered variety jambu was evaluated. The experimental design was randomized in factorial blocks (6 x 2), with five repetitions. The treatments consisted in the combination of six doses of N (0; 60; 90; 120; 150 and 180 kg ha-1) with and without liming application (0 and 70% V). The variables of growth, production, gas exchange and post-harvest quality of jambu were evaluated. Standardly, there was interaction between N-dose and liming factors for most of the analyzed variables, except for titratable acidity and total soluble solids and titratable acidity ratio. In general, the increasing of N doses combined with liming positively affected growth, production, physiological responses and post-harvest quality, and it was observed that in the 170 kg ha-1 dose of N higher response was obtained in the biomass accumulation of the aerial part and in the 180 kg ha-1 dose of N maximum production of inflorescences. Therefore, the use of correctives associated with nitrogen fertilization is recommended to obtain more significant production and quality of jambu.

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Section: Growthsupporting

confidence: 70%

Nitrogen Fertilization and Liming Improves Growth, Production, Gas Exchange and Post-Harvest Quality of Yellow Flower Jambu

Costa

Júnior²,

Sampaio³

et al. 2020

JAS

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“…These results are different from those found by Favoreto & Gilbert (2010), who observed that jambu could reach around 20 to 40 cm in height. Borges et al (2014) and Souto et al (2018) studied fertilization in the jambu crop and obtained higher plant height than that found in this study, with values of 37.36 and 35.42 cm, respectively.…”

Section: Resultscontrasting

confidence: 42%

Productivity of Irrigated Jambu Under Soil-Water Stresses and Nitrogen Doses

et al. 2020

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Jambu (Acmella oleracea (L.) R.K.) is a short-cycle leafy vegetable from the Amazon region, which needs an adequate availability of water and nutrients, mainly nitrogen, to obtain a rapid mass increase. This research aimed to study the effect of different soilwater stresses and nitrogen doses on jambu cultivation in the state of Pará. The experiments were conducted at the Igarapé-Açu experimental farm of the Federal Rural University of Amazonia (UFRA). The Jamburana variety was used in a 10 × 10 cm spacing, using a randomized block design in a 4 × 4 factorial scheme with three replications. Each plot had a dimension of 0.4 × 0.5 m (0.2 m 2 ), totaling 20 plants in 4 rows, but only the plants of the central rows were useful. Treatments consisted of four soil-water stresses (12, 18, 24, and 30 kPa) as an indication of the irrigation time (critical stress), using drip irrigation, and four nitrogen doses (0, 50, 100, and 150 kg ha −1 ). The use of soil-water stress of 12 kPa associated with nitrogen fertilization at a dose of 150 kg ha −1 is recommended for better development and production of jambu under the conditions this experiment was conducted.

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“…Research with many cultures has been revealed that the increase on N availability in plants promote higher productivity and quality (Milhomens et al, 2015;Rós et al, 2016). Studies with jambu culture (Borges et al, 2013;Rodrigues et al, 2014;Souto et al, 2018) shown favourable response to nitrogen supplementation through soil, demonstrating high demand of N to production maintenance and quality. Although studies with jambu, linking the variation in N supply with the production of dry mass at the aerial and inflorescence part on systems more technics, as in hydroponics, which use nutritive solution instead of soil (Khan et al, 2018), are inexistent.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the Non-destructive Method Efficiency of Estimating Nitrogen Content in Jambu Plants Grown in Hydroponic System

Sampaio

Júnior²,

Chagas³

et al. 2020

JAS

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Jambu is considered a leafy vegetable with expressive relevance in the regions that compose the Brazilian Amazon. However, there are challenges regarding its cultivation, particularly for the nutritional management, since there is little technical information that allows an increase in the efficiency of its production. In this sense, nitrogen (N) gains prominence, since it is related to the increased yield and quality of leafy vegetables, therefore its monitoring of N content in plants is necessary. The objective of this study was to evaluate the efficiency of using the SPAD index to estimate the N content of jambu leaves, total chlorophyll concentration, as well as its relationship with dry mass accumulation due to the increase of nitrogen concentration in the nutrient solution. The design used was completely randomized with eight replications. The treatments were six nitrogen concentrations in the nutrient solution (11, 13, 15, 17, 19 and 21 mmol L -¹ ). After 21 days of transplantation, the SPAD index was measured. Then, these plants were collected to quantify the total chlorophyll, dry mass and nitrogen content. In general, the variables were explained by increasing linear models. There was a positive correlation between the SPAD index and the other characteristics evaluated. Based on the results, the best response at the concentration of 21 mmol L -¹ in the nutrient solution stands out. In addition, the SPAD index has potential to be used in the diagnosis of nitrogen status in jambu leaves.

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Agronomic performance of jambu (Acmella oleracea) using organic fertilization

Cited by 7 publications

References 10 publications

Nitrogen Fertilization and Liming Improves Growth, Production, Gas Exchange and Post-Harvest Quality of Yellow Flower Jambu

Nitrogen Fertilization and Liming Improves Growth, Production, Gas Exchange and Post-Harvest Quality of Yellow Flower Jambu

Productivity of Irrigated Jambu Under Soil-Water Stresses and Nitrogen Doses

Evaluation of the Non-destructive Method Efficiency of Estimating Nitrogen Content in Jambu Plants Grown in Hydroponic System

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