Production of spinach in intensive Mediterranean horticultural systems can be sustained by organic-based fertilizers without yield penalties and with low environmental impacts

Vico, A.; Sáez, José Antonio López; Pérez-Murcia, M.D.; Martínez-Tomé, Juan; Andreu-Rodríguez, J.; Agulló, E.; Bustamante, M.A.; Sanz-Cobeña, Alberto; Moral, R.

doi:10.1016/j.agsy.2019.102765

Cited by 15 publications

(21 citation statements)

References 33 publications

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“…Therefore, the variations in compost tea quality will probably determine the nature and extent of plant effects [28]. In addition, statistical differences were not observed between the NPK and DMPP in agreement with the results of Vico et al [17], with or without CE application. Furthermore, results from Sheikhi et al [29] showed that the application of DMPP had no significant effect on the yield of spinach plant at low and medium levels of N (50 and 75 mg N kg −1 soil), but decreased the yield of this plant at the higher level of N (100 mg N kg −1 soil).…”

Section: Discussionsupporting

confidence: 88%

“…The soil at the site was classified as clayey soil on the basis of USDA (44% clay, 35% sand, and 21% silt) and had an alkaline pH, low salinity, low concentration of total nitrogen (0.96 g kg −1 ) and poor oxidizable organic carbon content (5.74 g kg −1 ). Soil characterization was conducted following the methods described by Vico et al [17]. The commercial cultivar of spinach (var.…”

Section: Plant Materials and Experimental Designmentioning

confidence: 99%

“…Each replicate was carried out in 0.42 m × 1.4 m plots randomly located. Spinach leaves were manually harvested 80 das, when plants achieved a marketable size [17], and weighed to assess the total yield. Immediately after harvest, the leaves were cold-transported to the Pilot Plant of the Institute of Plant Biotechnology (UPCT), where they were stored at 2 • C and 90% relative humidity (RH) until the next day when they were processed.…”

Section: Plant Materials and Experimental Designmentioning

confidence: 99%

“…Particularly, adequate nitrogen (N) fertilisation improved spinach production and quality, reducing environmental pollution and economic losses [16]. Nowadays, the use of novel fertilizers may fulfil the nitrogen requirements of the crop, decreasing the environmental impact of production and achieving a circular economy by closing nutrient loops [17]. It has been demonstrated that the negative effects of nitrate leaching and atmospheric N 2 O loads could be mitigated by the nitrification inhibitor 3,4-dimethylpyrazole phosphate (DMPP), which inhibits nitrification by reducing the abundance and metabolic activity of ammonia-oxidizing bacteria in alkaline soils [18].…”

Section: Introductionmentioning

confidence: 99%

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Effect of Compost Extract Addition to Different Types of Fertilizers on Quality at Harvest and Shelf Life of Spinach

Giménez

Gómez²,

Bustamante

et al. 2021

Agronomy

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Spinach is rich in minerals, vitamins, phytochemicals and bioactive compounds with health-beneficial effects; however, this plant also tends to accumulate oxalates and nitrates in their leaves. Apart from genotype, nutrition is the pre-harvest factor that mostly affects quality attributes at harvest. Particularly, the application of compost extracts (CE) may induce resistance against soil-borne diseases and favour secondary metabolism, increasing antioxidant capacity. The objective of this study was to evaluate the effects of different types of fertilization with or without the addition of CE, on harvest quality and shelf life of minimally processed spinach (Spinacia oleracea, var. Shrike RZ) stored during 12 days at 4 °C. A compost extract (CE) was prepared by mixing a compost from agri-food wastes (vine pruning, leek waste and olive mill waste) with deionized water. CE foliar applications were done from days 28 and 56 after sowing. The treatments applied were: Control; Control + CE; NPK (inorganic NPK fertilizer 15-15-15); NPK + CE; DMPP (ENTEC Nitrofoska® plus the nitrification inhibitor 3,4-dimethylpyrazole phosphate (DMPP)) and DMPP + CE. After harvest, spinach leaves were minimally processed and packaged to generate a passive modified atmosphere. Nitrate content in the control treatment was reduced by the addition of CE, although in the rest of the treatments, CE addition did not produce any effect. For nitrite contents, the lowest value was obtained for the Control + CE. Moreover, the oxalate content was the lowest for the control treatment with a decreasing trend throughout the storage. The treatment Control + CE also showed the highest initial total phenolic contents, with very similar values at the end of shelf life to those observed at harvest for all the treatments. The highest differences in color as regards the initial values were detected for DMPP. Microbial loads increased for all the treatments without differences between them. The atmosphere reached at the end of the cold storage was the same for all the cases, with CO2 and O2 around 10 kPa for each one of them. After 12 days at 4 °C, all the treatments were above the limit of usability, with the spinach leaves acceptable for consumption. The results found in this study indicate that the addition of CE might be convenient for obtaining spinach rich in bioactive compounds and with low concentrations of antinutritional factors, without affecting the microbial load of the final product.

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Section: Discussionsupporting

confidence: 88%

Section: Plant Materials and Experimental Designmentioning

confidence: 99%

Section: Plant Materials and Experimental Designmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effect of Compost Extract Addition to Different Types of Fertilizers on Quality at Harvest and Shelf Life of Spinach

Giménez

Gómez²,

Bustamante

et al. 2021

Agronomy

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“…The N in tissue samples (leaves and stems) was determined in an automatic elemental microanalyzer (EuroVector Elemental Analyser, Milan, Italy) [60] and expressed as %N. The total concentrations of P and K in leaves and stems were evaluated in the extract following HNO 3 -HClO 4 digestion.…”

Section: Nitrogen Phosphorus and Potassium Contents In Leaves And Stemsmentioning

confidence: 99%

Effects of Soil Fertilization on Terpenoids and Other Carbon-Based Secondary Metabolites in Rosmarinus officinalis Plants: A Comparative Study

Bustamante

Michelozzi

Caracciolo

et al. 2020

Plants

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Rosmarinus officinalis is an evergreen aromatic plant with important commercial interest as it contains numerous essential oils (composed of terpenoid compounds) and phenolic constituents (natural antioxidant compounds). This work aims at evaluating the concomitant effects of different inorganic and organic fertilization treatments and the subsequent increases in soil nutrient availability on terpenoids and other carbon-based secondary metabolites, e.g., flavonoids and phenolic compounds, in Rosmarinus officinalis leaves. The results showed that, as expected, the structural carbohydrate content (lignocellulosic compounds) in stems was higher in fertilized plants than in controls. Additionally, positive correlations were observed of the absolute amounts of total terpenoids and some single terpenoid compounds with N or P contents in leaves. On the contrary, the phenolic and flavonoid concentrations in all the rosemary plant parts were lower with the fertilization treatments. Indeed, negative correlations between the phenolic compounds (and flavonoids) and N in rosemary leaves were also found. Overall, the results suggest that the terpenoid production’s response to fertilization was due to N, which is essential for protein synthesis and terpene synthase activity, and to P, which is necessary for the synthesis of both terpenoid precursors and ATP and NADPH, also needed for terpenoid synthesis. On the other hand, the basis for the fertilization’s effects on the production of phenolic compounds is the direct nitrogen trade-off between growth and the shikimic acid pathway by which phenolics compounds are synthesized.

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Effects of electrokinetic and ultrasonication pre-treatment and two-step anaerobic digestion of biowastes on the nitrogen fertiliser value by injection or surface banding to cereal crops

Nyang’au

Møller

Sørensen

2023

Journal of Environmental Management

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Production of spinach in intensive Mediterranean horticultural systems can be sustained by organic-based fertilizers without yield penalties and with low environmental impacts

Cited by 15 publications

References 33 publications

Effect of Compost Extract Addition to Different Types of Fertilizers on Quality at Harvest and Shelf Life of Spinach

Effect of Compost Extract Addition to Different Types of Fertilizers on Quality at Harvest and Shelf Life of Spinach

Effects of Soil Fertilization on Terpenoids and Other Carbon-Based Secondary Metabolites in Rosmarinus officinalis Plants: A Comparative Study

Effects of electrokinetic and ultrasonication pre-treatment and two-step anaerobic digestion of biowastes on the nitrogen fertiliser value by injection or surface banding to cereal crops

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