Luísa Coelho

Luísa Coelho
Universidade do Algarve | UALG · MeditBio - Centre for Mediterranean Bioresources and Food

MSc - Sustainable Agriculture

About

34
Publications
5,816
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
95
Citations
Introduction
My research is focused on the study of the composting process, mainly its use in the biological control of fungal plant diseases and fertilizer.

Publications

Publications (34)
Article
Full-text available
Microalgae are considered a promising source of eco-friendly antifungal agents that can potentially reduce the usage of synthetic fungicides. Hence, properties of aqueous extracts from Nannochloropsis sp., Phaeodactylum tricornutum, Scenedesmus obliquus, Chlorella vulgaris and Spirulina sp. were investigated in vitro regarding their antagonistic ac...
Poster
Full-text available
Soilless cultivation has increasingly been used in the cultivation of vegetables and berries, and can be applied in two ways: with hydroponic cultivation or on substrates. When cultivating on substrates, the nutrient solution that drains from the substrate is often discarded. However, the drained solution contains important amounts of nutrients. Dr...
Article
The increasing demand of natural products for the control of plant diseases has led to the search for biological control agents, namely fungi, often isolated from composts of organic residues. By composting two different mixes of agro-industrial residues, P1 and P2 composts were obtained, from where a known antagonist, Trichoderma atroviride, was i...
Article
Turfgrasses are affected by fungal diseases and their chemical control is currently limited by the legislation and the impact on the environment of fungicides and the possible development of fungicide resistance. This study was carried out during three years to evaluate the antagonistic effect of the microbiota associated with organic composts. Two...
Article
Stevia rebaudiana Bertoni is a promising crop for semiarid climates, including Algarve region. The objectives of this work were: to compare the feasibility of the eco-friendly stevia weed control strategy with a compost of vegetable residues (grass clippings and pruning’s); to identify the emerged weed species, and to evaluate the effect of compost...
Article
Turfgrass is susceptible to several fungal diseases, being Sclerotinia homoeocarpa, the causal agent of dollar spot, which causes the greatest turfgrass losses in several countries. Composting allows the valorization and treatment of organic wastes, producing organic composts with agricultural applications as soil amendments and as biological contr...
Article
Full-text available
Abstract: The aim of this study was to evaluate the agricultural use of a commercial compost as a soil organic amendment, its effect on weed occurrence and its residual fertilizer effect on soil. The tested crop was greenhouse lettuce (Lactuca sativa L.). The plants were grown in randomized pots under three types of fertilization, as follows: no fe...
Conference Paper
Full-text available
Greenhouse lettuce (Lactuca sativa L.) was grown in randomized pots under three types of fertilization, as follows: no fertilization (control); an inorganic fertilizer (NK) and an organic commercial compost (Organical®, Terra Fertil, Portugal), prepared with urban sewage sludge, crop, garden and forest residues. The results showed a higher growth o...
Article
Two compost piles were prepared, using two ventilation systems: forced ventilation and ventilation through mechanical turning. The material to compost was a mixture of orange waste, olive pomace, and grass clippings (2:1:1 v/v). During the composting period (375 days), samples were periodically taken from both piles, and the enumeration of fungi, a...
Conference Paper
This work evaluates the suppressivity of two composts from agro-industrial residues, towards Rhizoctonia solani in cucumber. Composts were prepared with orange wastes, olive marc, and grass clippings (2:1:1, v/v), following two composting methods: static pile with forced ventilation and mechanically turned pile (naturally ventilated). The composts...
Conference Paper
Full-text available
É referido na literatura a possibilidade de reduzir a ocorrência de infestantes através da aplicação de uma camada, suficientemente espessa, de composto sobre o solo. Neste ensaio preliminar testou-se o controlo de infestantes mediante a aplicação de um composto de resíduos vegetais (Nutriverde®, Algar), durante o período de Verão na região do Alga...
Article
Full-text available
In this trial we evaluated the effect of different mixtures of organic growing media substratum and vermicompost and their physical properties on biomass, chemical composition and yield of essential oils of Thymus zygis. Five treatments were established based on two types of organic materials (O, commercial growing media, and V, vermicompost). The...
Conference Paper
This study evaluated the performance of six culture media for the detection of actinomycetes present in composts of agro-industrial wastes. The composts were produced with orange wastes, olive marc and grass clippings, in the proportion of 2:1:1 in volume. Two compost piles were built with different ventilation systems: one with forced ventilation...
Article
This work evaluates the suppressivity of two composts from agro-industrial residues, towards Rhizoctonia solani in cucumber. Composts were prepared with orange wastes, olive marc, and grass clippings (2:1:1, v/v), following two composting methods: static pile with forced ventilation and mechanically turned pile (naturally ventilated). The composts...
Conference Paper
Full-text available
Resíduos agro-industriais, como o bagaço de azeitona (BA), podem ser valorizados através de compostagem, obtendo-se produtos com interesse agrícola, sobretudo para emprego como fertilizantes ou como componentes de substratos hortícolas. Neste trabalho apresentam-se os resultados do teste de compostos de bagaço de azeitona, obtidos com o bagaço estr...
Conference Paper
Full-text available
Alguns microrganismos manifestam capacidade supressiva de doenças do solo, denominando-se por isso microrganismos antagonistas. Esta característica pode, em algumas situações, ser usada na protecção das plantas contra doenças do solo, em alternativa aos pesticidas. Por isso têm-se desenvolvido produtos comerciais para protecção das plantas, constit...
Conference Paper
Full-text available
Resumo The main objective of this work was to evaluate the suppressive capacity of composts infected with Rhizoctonia solani in a cucumber crop. Agro industrial wastes, orange, olive pomace and grass clippings, with a volumetric proportion of 2:1:1, were composted in two piles, one with static with ventilation (PV) and the other with mechanical tur...
Conference Paper
Full-text available
Neste trabalho realizou-se a compostagem de uma mistura de laranja de refugo, bagaço de azeitona e aparas de relva, na proporção em volume de 2:1:1, em duas pilhas, uma com reviramento mecânico e outra estática com ventilação forçada, na qual o ventilador actuava quando a temperatura ultrapassava 60 ºC. Para monitorizar a compostagem, recolheram-se...
Conference Paper
Full-text available
Resumo Neste trabalho testou-se a aplicação de extracto de urtiga (Urtica sp.) como fertilizante em dois viveiros hortícolas, um no Inverno e outro no Verão. Avaliou-se também o efeito do extracto na ocorrência de míldio (Phythophtora infestans) e lagarta-da-couve nas plantas do viveiro. O extracto de urtiga foi obtido por imersão das plantas em ág...
Article
Composts were mixed with peat, to prepare substrates for the production of vegetable seedlings. Sewage sludge, municipal solid waste and yard prunings, were mixed in the proportions (v/v) of 1:0:3 (compost A); 0:1:1.5 (compost B) and 1:1:2 (compost C) and composted in windrows. Composts were sieved (<4mm) and mixed with a commercial peat mix for nu...
Conference Paper
Full-text available
Comparação da qualidade do tomate obtido segundo o modo de produção biológico, por métodos convencionais no solo e em cultura em lã de rocha Resumo No Algarve realizou-se um ensaio com o objectivo de comparar a qualidade do tomate, produzido segundo diversos modos de produção, considerando o aspecto exterior, a qualidade gustativa e as propriedades...

Network

Cited By