1,720,988 research outputs found
Impacts of genetic material and current technologies on product quality of selected greenhouse vegetables - A review
No full textThis is the final paper 'Impacts of genetic material and current technologies on product quality of selected greenhouse vegetables – A review' (2018). European Journal of Horticultural Science, 83 (5), pp. 319-328.
https://doi.org/10.17660/eJHS.2018/83.5.5
https://www.pubhort.org/ejhs/83/5/5/index.ht
Optimising Soilless Culture Systems and Alternative Growing Media to Current Used Materials
No full textThis book represents a Special Issue collection called: “Optimising Soilless Culture Systems and Alternative Growing Media to Current Used Materials”. Nine original papers, one review, and an Editorial from 41 authors from different countries were published in this Special Issue. New strategies and technologies, including new sustainable raw materials, should be continually developed to solve specific cultivation limitations, optimise existing systems, reduce related environmental impacts, and address the impacts of climate change
An in-depth analysis of sustainable practices in vegetable seedlings nurseries: A review
Get PDFNowadays, sustainable and resilient cultivation techniques have significantly increased in vegetable cultivation. Thus, there is a growing demand for high-quality certified planting materials suitable for these new cultivation methods. This review aims to provide a comprehensive and in-depth analysis of recent sustainable practices in vegetable seedling nurseries. Here, we thoroughly analysed 604 articles and 3553 keywords from the Scopus database, utilizing qualitative and quantitative methods, covering the past 20 yr. We conducted a bibliometric analysis using VOSviewer software. to identify the most relevant study topics. The design of seed trays, seed enhancement treatments, and controlled environmental conditions are crucial for generating optimal seedlings and transplants. Additionally, sustainable growing media are necessary to optimize resources and reduce input use. We identified grafting and LED lighting technology as rapidly advancing technologies in seedling production. Furthermore, applying biostimulants and beneficial microorganisms as booster agents can enhance efficiency and promote sustainable production. The findings of this study offer valuable insights into the research trends for vegetable seedlings and transplants, underscoring the imperative for adopting sustainable practices within the nursery industry
Do soilless culture systems have an influence on product quality of vegetables?
Get PDFIn the horticulture industry, the focus has traditionally been on yield. However, consumers’ interest worldwide in the quality of horticultural products has increased in the recent past and will become the driving force in the future. Soilless culture systems (SCSs), the most intensive production method in today’s horticulture industry, are based on environmentally friendly technology, which can result in higher yields, even in areas with adverse growing conditions. However, using SCSs does not automatically result in the production of high-quality vegetables. Numerous studies confirm that a SCS enables growers to produce vegetables without quality losses compared to soil cultivation. An adaptation of cultural management to the specific cultural system, as well as crop demand, can further result in the improvement of the quality of horticultural products.Peer Reviewe
Beyond Peat: Wood Fiber and Two Novel Organic Byproducts as Growing Media—A Systematic Review
No full textThis review critically examines three agro-industry renewable byproducts—wood fiber, coffee silverskin, and brewer’s spent grain—as partial peat substitutes. We aimed to comprehensively analyze their origin, processing methods, current applications, and key physical, hydrological, and chemical properties relevant to horticultural use. In soilless culture, wood fiber can be used as a stand-alone substrate. When incorporated at 30–50% (v/v) in peat mixtures, it supports plant growth comparable to peat; however, higher proportions may restrict water and nutrient availability. Coffee silverskin demonstrates high water retention and nutrient content, but its inherent phytotoxicity requires pre-treatment (e.g., co-composting); at concentrations up to 20%, it shows promise for potted ornamental crops. Brewer’s spent grain is nutrient-rich but demands careful management due to its rapid decomposition and potential salinity issues; inclusion rates around 10% have shown beneficial effects. In conclusion, when used appropriately in blends, these bio-based byproducts represent viable alternatives to reduce peat dependence in vegetable and ornamental cultivation, contributing to more sustainable horticultural practices. Future research should optimize pre-treatment methods for coffee silverskin and brewer’s spent grain, investigate long-term stability in diverse cropping systems, and explore novel combinations with other organic waste streams to develop circular horticultural substrates
Enhancing the cultivation of Salicornia fruticosa with agroindustrial compost leachates in a cascade cropping system: evaluating the impact of melatonin application
Get PDFCascade cropping systems (CCS) utilize leachate from a primary crop to grow secondary crops and enhance the efficient use of water and fertilizers in areas with scarce water resources. A preliminary study investigated the effect of melatonin in a cascade cropping system to potentially improve plant tolerance to abiotic stresses. This study aimed to cultivate Salicornia fruticosa in this cropping system to reduce nutrient discharge and assess the impact of exogenous melatonin on Salicornia growth and quality. The CCS included a primary crop of Salicornia grown in an agro-industrial compost or peat. Leachates from these media were used to cultivate the same plant once again in a floating system under four treatments: compost leachate (T1), peat leachate (T2), 100% nutrient solution (NS) (T3), 50% NS (T4) strength. Four concentrations of exogenous melatonin were applied in foliar spray: 0, 100, 200, and 400 µM. Melatonin application increased yield, with the highest values observed when plants were grown in T1. Water use efficiency was also maximized in T1 and with both 200 and 400 µM melatonin applications. The highest nitrogen use efficiency was achieved in plants grown in peat leachate. The lipid membrane damage was assessed revealing that plants grown in compost leachate exhibited the lowest MDA values regardless of melatonin concentrations. The accumulation of some antinutritional compounds (nitrate, oxalate, and sodium) were the highest in those plants grown in compost leachate. Overall, shoots grown in peat leachate exhibited the best phytochemical profile (total phenol content, total flavonoids, and antioxidant capacity), with peak values in plants treated with 200 µM melatonin. These findings suggest that S. fruticosa can be effectively cultivated using leachate from a previous crop in a floating system and that exogenous melatonin application enhances the yield and nutritional quality of Salicornia shoots.The author(s) declare financial support was received for the research, authorship, and/or publication of this article. The research was supported by Grant PID2020-114410RB-I00 funded by MCIN/AEI/10.13039/501100011033 and Grant AGROALNEXT funded by Comunidad Autónoma de la Región de Murcia through Fundación Séneca—Agencia de Ciencia y Tecnologı́a de la Región de Murcia and European Union NextGenerationEU
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Get PDF“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
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