Effect of organic compost and inorganic nitrogen fertigation on spinach growth, phytochemical accumulation and antioxidant activity

Machado, R. M. A.; Alves-Pereira, I.; Lourenço, Darling de Andrade; Ferreira, Rui

doi:10.1016/j.heliyon.2020.e05085

Cited by 31 publications

(32 citation statements)

References 56 publications

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“…Carotenoid levels ranged from an average of 25 to 30 mg/100 g FW (Figure 3e). These concentrations were in the ranges reported in [14,52,53] (17 to 40 mg/100 g FW) for spinach grown in soil.…”

Section: Photosynthetic Pigmentssupporting

confidence: 63%

“…It was higher in leaf-blades of plants grown in peat (36 mg/100 g/FW) than in those grown in coir pith + fiber (13 mg/100 g/FW), coir pith (24 mg/100 g/FW), and coir chips (19 mg/100 g/FW) (Figure 5d). The differences could be related to leaf nitrogen content and/or plant nitrogen uptake since the nitrogen amount [74][75][76] and its form can affect AsA [53,77]. However, AsA was slightly correlated to leaf N (r = 0.483, p < 0.05).…”

Section: Phytochemical Accumulationmentioning

confidence: 99%

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Coir, an Alternative to Peat—Effects on Plant Growth, Phytochemical Accumulation, and Antioxidant Power of Spinach

et al. 2021

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The effects of four commercial substrates, a peat-based substrate, and three coir types (coir pith, coir chips, and coir pith + fibers) on yield, phytochemical accumulation, and antioxidant activity were evaluated in Spinacia oleracea L. cv. ‘Manatee’. Soil-blocked spinach seedlings were transplanted into Styrofoam planting boxes filled with the substrate. Each planting box was irrigated daily by drip with a complete nutrient solution, and the irrigation scheduling was optimized to the peat. Leaf area and fresh yield in coir pith and coir pith + fiber were similar to those obtained in peat. However, shoot dry weight accumulation and leaf chlorophyll were lower in plants grown in coir. Substrate type did not affect leaf carotenoids. Total flavonoid content was higher in plants grown in the different types of coir. Total phenols and antioxidant activity (DPPH) were higher in plants grown in coir pith. This indicates that the different coir types, mainly coir pith, may provide an alternative to peat since they allowed a high fresh yield to be reached and the total flavonoids to be increased. In contrast, the levels of other phytochemicals and antioxidant activity were usual for spinach. However, further research is necessary to analyze the effects of irrigation scheduling and the nutrient solution adjusted to each growing medium on yield and phytochemical accumulation.

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Section: Photosynthetic Pigmentssupporting

confidence: 63%

Section: Phytochemical Accumulationmentioning

confidence: 99%

Coir, an Alternative to Peat—Effects on Plant Growth, Phytochemical Accumulation, and Antioxidant Power of Spinach

et al. 2021

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“…The clearest evidence of this was observed in the ABTS and FRAP tests. Results similar to those for leaves have been obtained in other studies [58,61,62]. The addition of inorganic N leads to a significant decrease in leaf-blade FRAP in spinach (Spinacia oleracea L. cv.…”

Section: Relationship Between Soil N Level and Leaf Chemical Composition As Well As Antioxidant Capacitysupporting

confidence: 87%

“…The addition of inorganic N leads to a significant decrease in leaf-blade FRAP in spinach (Spinacia oleracea L. cv. Manatee) [62]. The results of Zhou et al [58] suggest that even though low N conditions generally tend to improve the antioxidant qualities of lettuce, the extent of this effect is highly dependent on genotype.…”

Section: Relationship Between Soil N Level and Leaf Chemical Composition As Well As Antioxidant Capacitymentioning

confidence: 99%

Actinidia arguta Leaf as a Donor of Potentially Healthful Bioactive Compounds: Implications of Cultivar, Time of Sampling and Soil N Level

Stefaniak

Łata

2021

Molecules

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The aim of this study was to assess the enzymatic and non-enzymatic antioxidant status of kiwiberry (Actinidia arguta) leaf under different N regimes tested three times in field conditions during the 2015 growing season in two cultivars (‘Weiki’ and ‘Geneva’). Leaf total antioxidant capacity using ABTS, DPPH and FRAP tests was evaluated in the years 2015 to 2017, which experienced different weather conditions. Both cultivars exhibited a significant fall in leaf L-ascorbic acid (L-AA) and reduced glutathione (GSH) as well as global content of these compounds during the growing season, while total phenolic contents slightly (‘Weiki’) or significantly (‘Geneva’) increased. There was a large fluctuation in antioxidative enzyme activity during the season. The correlation between individual antioxidants and trolox equivalent antioxidant capacity (TEAC) depended on the plant development phase. The study revealed two peaks of an increase in TEAC at the start and end of the growing season. Leaf L-AA, global phenolics, APX, CAT and TEAC depended on the N level, but thiol compounds were not affected. Over the three years, TEAC decreased as soil N fertility increased, and the strength of the N effect was year dependent. The relationship between leaf N content and ABTS and FRAP tests was highly negative. The antioxidant properties of kiwiberry leaves were found to be closely related to the plant development phase and affected by soil N fertility.

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“…Lower levels of phenolic, flavonoid, and anthocyanins compounds in plants grown under high N supply have been reported by [ 12 , 13 , 14 ]. In spinach [ 15 ] and mustard ( Brassica juncea ) [ 16 ], nitrogen addition decreased total phenols’ content.…”

Section: Introductionmentioning

confidence: 99%

Influence of Nitrogen Sources Applied by Fertigation to an Enriched Soil with Organic Compost on Growth, Mineral Nutrition, and Phytochemicals Content of Coriander (Coriandrum sativum L.) in Two Successive Harvests

Machado

Alves-Pereira

Faty

et al. 2021

Plants

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The aim of the present study was to evaluate the effects of nitrogen source applied by fertigation to an enriched soil with organic compost on plant growth, mineral nutrition, and phytochemical contents in two successive harvests in coriander. The treatments were as follows: unfertilized soil, soil enriched with organic compost, and soil enriched with organic compost to which 60 kg N ha−1 as ammonium nitrate and as ammonium sulfate applied by fertigation were added. Ammonium nitrate addition allowed to obtain a high total fresh yield (3.6 kg m−2) with a low inorganic nitrogen input. Ammonium nitrate increased plant shoot dry weight; fresh yield; and shoot N, K, and Ca uptake in the first harvest. Ammonium nitrate relative to organic compost and to ammonium sulfate increased fresh yield by approximately 57 and 25%, respectively. However, ammonium sulfate in the first harvest greatly increased shoot total phenols, from 137 mgGAE/100 g FW in ammonium nitrate to 280.4 mgGAE/100 g FW. Coriander’s fresh yield, in the second harvest, was unaffected by nitrogen addition. However, ammonium nitrate increased shoot total phenols and FRAP activity. Overall, the shoot phytochemical accumulation in the second harvest was lower than in the first. The combined application of ammonium nitrate and organic compost is a strategy to reduce inorganic nitrogen application.

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Effect of organic compost and inorganic nitrogen fertigation on spinach growth, phytochemical accumulation and antioxidant activity

Cited by 31 publications

References 56 publications

Coir, an Alternative to Peat—Effects on Plant Growth, Phytochemical Accumulation, and Antioxidant Power of Spinach

Coir, an Alternative to Peat—Effects on Plant Growth, Phytochemical Accumulation, and Antioxidant Power of Spinach

Actinidia arguta Leaf as a Donor of Potentially Healthful Bioactive Compounds: Implications of Cultivar, Time of Sampling and Soil N Level

Influence of Nitrogen Sources Applied by Fertigation to an Enriched Soil with Organic Compost on Growth, Mineral Nutrition, and Phytochemicals Content of Coriander (Coriandrum sativum L.) in Two Successive Harvests

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