Compost Tea Quality and Fertility

Eudoxie, Gaius; Martin, Micah

doi:10.5772/intechopen.86877

Cited by 11 publications

(6 citation statements)

References 67 publications

(104 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…On the other hand, the beneficial plant microorganisms that can be found in compost teas can have a biostimulant, biofertilizer or biopesticide effect and/or produce growth promoters like phytohormones that can promote a beneficial effect on yield. 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.…”

Section: Discussionsupporting

confidence: 88%

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

View full text Add to dashboard Cite

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.

show abstract

Section: Discussionsupporting

confidence: 88%

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

View full text Add to dashboard Cite

show abstract

“…Plant biomass and sapling number analyses corroborates the highly variable properties and effect of bio-products in plants growth, justifying the contradictory and in some cases negative results found in bibliography [55,56,57]. Bio-products effects were extremely variable on plant parameters, and as it was expected, application did not produced signi cant responses in compost treatments.…”

Section: Discussionsupporting

confidence: 69%

Plant Bioestimulants: Compost Tea and Bioslurry Characterization

Funes-Pinter

Pisi

Aroca

et al. 2020

Preprint

View full text Add to dashboard Cite

In the present study, the quality of aerated and non-aerated compost teas and bioslurry as bio-fertilizers and its application on two plant species in different substrates were tested. Compost tea brewed from a mixture residues compost presented higher nutrient content than that brewed from grape marc composted. Aeration, with shorter extraction time, resulted in higher pH, but in general with lower nutrient concentration, while bioslurry, presented higher nitrogen content. No pathogen and toxic effects were detected in the bio-products. Finally, Bio-products were evaluated in ornamental plant species: Petunia hibrida and Impatiens walleriana , where compost teas and bioslurry presented highly variable properties and effects on plant growth, depending on the substrate and species used. While in sand no significant effect on plant biomass and pigments were observed, in compost and commercial substrate bioslurry presented values similar to the traditional fertilizer. Compost tea presented variable results with no differences between aerated and non-aerated, both increasing carotenoids in I. walleriana in sand. We conclude that aeration showed no differences in compost tea quality, whilst bioslurry demonstrated to increase plant biomass at similar values to traditional fertilizer. Our results demonstrated that alternative products are an efficient, safe, ecological, and economical alternative to traditional products.

show abstract

“…The acknowledged stimulative actions of HS or CTs on plant biochemical and physiological activity have been related to inducible effects on enzymatic pathways as hormone-like molecules [ 39 , 40 ]. The investigation of a “cause and effect” mechanism or structural-activities correlation between the organic extracts and plant growth have pointed out the concomitant influence of conformational properties and release of specific compounds on plant biochemical processes [ 25 , 41 ].…”

Section: Discussionmentioning

confidence: 99%

Evaluation of Sustainable Recycled Products to Increase the Production of Nutraceutical and Antibacterial Molecules in Basil Plants by a Combined Metabolomic Approach

Verrillo

Koellensperger

Puehringer

et al. 2023

Plants

View full text Add to dashboard Cite

Background: An important goal of modern medicine is the development of products deriving from natural sources to improve environmental sustainability. In this study, humic substances (HS) and compost teas (CTs) extracted from artichoke (ART) and coffee grounds (COF) as recycled biomasses were employed on Ocimum basilicum plants to optimize the yield of specific metabolites with nutraceutical and antibacterial features by applying sustainable strategies. Methods: The molecular characteristics of compost derivates were elucidated by Nuclear Magnetic Resonance spectroscopy to investigate the structure–activity relationship between organic extracts and their bioactive potential. Additionally, combined untargeted and targeted metabolomics workflows were applied to plants treated with different concentrations of compost extracts. Results: The substances HS-ART and CT-COF improved both antioxidant activity (TEAC values between 39 and 55 μmol g−1) and the antimicrobial efficacy (MIC value between 3.7 and 1.3 μg mL−1) of basil metabolites. The metabolomic approach identified about 149 metabolites related to the applied treatments. Targeted metabolite quantification further highlighted the eliciting effect of HS-ART and CT-COF on the synthesis of aromatic amino acids and phenolic compounds for nutraceutical application. Conclusions: The combination of molecular characterization, biological assays, and an advanced metabolomic approach, provided innovative insight into the valorization of recycled biomass to increase the availability of natural compounds employed in the medical field.

show abstract

Compost Tea Quality and Fertility

Cited by 11 publications

References 67 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

Plant Bioestimulants: Compost Tea and Bioslurry Characterization

Evaluation of Sustainable Recycled Products to Increase the Production of Nutraceutical and Antibacterial Molecules in Basil Plants by a Combined Metabolomic Approach

Contact Info

Product

Resources

About