Nitrate Accumulation in Lettuce and Rocket in Response to Nitrogen Fertilization in Intercropping

Júnior, Aurélio Paes Barros; Filho, Arthur Bernardes Cecílio; Rezende, Bráulio Luciano Alves; Lins, Hamurábi Anízio

doi:10.1590/1983-21252020v33n128rc

Cited by 5 publications

(3 citation statements)

References 11 publications

(7 reference statements)

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“…The nitrate content obtained with the N dose that maximized the fresh mass and productivity was 984.11 mg kg -1 and corresponded to an increase of 142% in relation to the content obtained in non-N fertilized plants. Researchers evaluating other vegetables also observed an increase in the nitrate content in response to the N supply (LIU et al, 2014;BARROS JÚNIOR et al, 2020;SILVA et al, 2021). Nitrates are the main form of N found in plants.…”

Section: Resultsmentioning

confidence: 94%

Doses and Split Nitrogen Fertilizer Applications on the Productivity and Quality of Arugula1

Nascimento

Filho

2021

Rev. Caatinga

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Splitting nitrogen (N) fertilizer application can be an efficient nutrient management technique to improve productivity and plant quality, as well as to reduce the negative environmental impact caused by N losses. In this context, the present study investigated how the management of N affects the agronomic characteristics of field-grown arugula plants. Nine treatments were assessed in a randomized complete block design, in a 4 x 2 + 1 factorial scheme, with three replicates. The evaluated factors were doses of N (60, 120, 180 and 240 kg N ha-1), split N fertilizer applications at side-dress (two and three times) and an additional treatment without a N supply. Maximum height was obtained with the application of 198 kg N ha-1. Nitrate content, fresh mass and productivity increased with increasing N doses. There was no effect of split N fertilizer applications on the characteristics evaluated. Therefore, the supply of 240 kg N ha-1 divided into two portions was considered as the best management strategy.

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Section: Resultsmentioning

confidence: 94%

Doses and Split Nitrogen Fertilizer Applications on the Productivity and Quality of Arugula1

Nascimento

Filho

2021

Rev. Caatinga

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“…Intercropping is a production system that aims to provide greater yields with less impact on the environment due to greater efficiency in the use of natural resources and inputs involved in the production process, bringing benefits to agricultural production of greater yields and better quality crops (Cecí lio Filho et al, 2015;Cecí lio Filho et al, 2017;Hendges et al, 2019;Wen et al, 2019;He et al, 2019;Barros Júnior et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Competitive Ability and Physiological Aspects of Single and Intercropped Arugula (Eruca sativa Miller)

Viana

Guimarães²,

Neto³

et al. 2022

JAS

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The aim of this study was to evaluate the competitive ability and physiological aspects of arugula intercropped with different aromatic condiment species. The study was carried out at the Teaching Garden of the Federal University of Ceará, Brazil. A randomised complete block design was used, with four replications and seven treatments: T1 (single arugula), T2 (arugula intercropped with coriander), T3 (arugula and parsley), T4 (arugula and garlic chives), T5 (single coriander), T6 (parsley) and T7 (garlic chives). A physiological evaluation was made of the arugula only. Competitive ability was obtained by calculating the aggressivity index, simplified aggressivity, competitive ratio and compensation ratio. The leaf area index and specific leaf area were calculated. No difference was seen between the treatments with arugula for the physiological factors net photosynthesis, stomatal conductance, rate of transpiration and instant carboxylation efficiency under evaluation within each crop cycle, but there was a difference between the two cycles. The coriander showed the highest aggressivity index and competitive ratio, and was considered more competitive than the arugula, with a higher compensation ratio. As an intercrop, the arugula showed greater competitive ability than the parsley and garlic chives. The greatest leaf area and leaf area index in the arugula plants were seen when intercropped with coriander.

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“…Arugula is a short-cycle leafy vegetable and belongs to a group that has a high capacity to accumulate nitrate (NURZYŃSKA-WIERDAK, 2009;BARROS JÚNIOR et al, 2020). According to Qadir et al (2017), studies show that vegetables provide approximately 40 -92% of the average daily intake of nitrate by humans, and according to Liu et al (2014), the arugula, spinach and lettuce are some of the richest sources of nitrate in the human diet.…”

Section: Introductionmentioning

confidence: 99%

Nitrogen Rates on Growth, Yield and Nitrate Foliar Content of Arugula

et al. 2021

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Nitrogen is the second nutrient most demanded by arugula. However, the positive effect it has on yield can negatively impact the quality of this vegetable, with negative effects on human health. Two experiments (summer and autumn) were carried out to evaluate the effect of N rates (0, 50, 100, 150, 200 and 250 kg ha−1) on the arugula growth, yield and quality (nitrate content). Each experiment was set up in a randomized block design with four replications. Increasing rates of N reflected positively on leaf N content and thus, higher and desirable values of height, leaf number, leaf area and plant dry mass were obtained in both growing seasons. Consequently, the yield had significant increase, which N was maximized in summer (4.9 kg m−2) and autumn (2.6 kg m−2) and leaf N of 29.4 and 27.0 g kg−1, respectively, at rates of 250 and 213 kg ha−1 and both growing seasons. The higher rate the higher foliar nitrate content of arugula, in summer (2931.3 mg kg−1) and autumn (4218.4 mg kg−1). The foliar nitrate content in both crop season do not reach the risk level to human being heath.

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Nitrate Accumulation in Lettuce and Rocket in Response to Nitrogen Fertilization in Intercropping

Cited by 5 publications

References 11 publications

Doses and Split Nitrogen Fertilizer Applications on the Productivity and Quality of Arugula1

Doses and Split Nitrogen Fertilizer Applications on the Productivity and Quality of Arugula1

Competitive Ability and Physiological Aspects of Single and Intercropped Arugula (Eruca sativa Miller)

Nitrogen Rates on Growth, Yield and Nitrate Foliar Content of Arugula

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