0000000000272649
AUTHOR
Giuseppa Scarito
USE OF NATURAL PRODUCTS FOR THE CONTROL OF POWDERY MILDEW OF ROSE PLANTS
PowDery mildew caused by Podosphaera pannosa (Wallr. Fr.) De Bary on roses in greenhouse cultivation is usually controlled by chemical products. Aiming to lower the use of chemical treatments, in vitro and in planta assays were carried out using some natural products. The inhibitory effect of essential oils extracted from oregano inflorescences (Origanum heracleoticum L.) and cloves (Syzygium aromaticum L. Merril et L.M. Perry), was evaluated by in vitro tests. Essential oil at 0.5, and 0.125 ml/L concentration was added to conidia suspension (8 x 105 conidia/ml). After 2, 4, 8, 12, 24 and 48 hours, 400 conidia for each treatment and control were evaluated and the germination percentage cal…
Natural products against the powdery mildew of rose plants
Inhibitory effects of the main compounds of oregano essential oil against some pathogenic fungi
The in vitro activity of essential oil compounds of Origanum heracleoticum L. was tested against Verticillium dahliae, Fusarium oxysporum, Phoma tracheiphila, Phytophthora cactorum and Botrytis cinerea by the well diffusion method using four different concentrations (from 1 x 104 to 1 x 10-2 μg·ml-1). Analyses by GC-ITMS of the oil extracted by steam distillation from dried inflorescences made it possible to identify 19 main compounds. The major compounds were thymol (39.10 %) followed by γ-terpinene (21.26 %) and ρ-cymene (11.23 %). Carvacrol and the plain essential oil at their higher concentrations showed an inhibitory effect against all pathogens tested. However, the percentage of inhib…
Lemon post-harvest decay control by natural products
Gravi alterazioni su olivo in Sicilia causate da Phoma incompta Sacc. et Mart.
Osservazioni sulla suscettibilità alla ticchiolatura di cultivar di nespolo del Giappone.
Effetto inibente dell'olio essenziale di origano nei confronti di Verticillium dahliae Kleb. agente di una tracheomicosi del pomodoro.
Prime osservazioni sulla suscettibilità alla ticchiolatura di cultivar di nespolo del Giappone in Sicilia
Attività inibente di estratti acquosi di piante sulla crescita di funghi fitopatogeni
Tecniche agronomiche, aspetti varietali e caratterizzazione del melone d'inverno.
tecniche agronomiche
Conservazione dei frutti di melone d'inverno. meridionale.
Fungistatic activity of essential oils of Laurus nobilis, Mentha X Piperita and Ruta graveolens against Rhizoctonia solani Kunn and Sclerotinia sclerotiorum (L.) De Bary
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Attività inibente di oli essenziali su funghi fitopatogeni
Efficacy of the fungicide valiphenal against crown rot of rose caused by Phytophthora citrophthora
Crown and root rot caused by soilborne species of Phytophthora are common diseases of container-grown ornamental plants in nursery. Crown rot of Rose caused by P. citrophthora has been recently reported in Sicily (southern Italy). Valiphenal (IR 5885) is a systemic dipeptide fungicide of the valinamide class of compounds and is active against Oomycetes. This new fungicide is under development by the italian agrochemical company ISAGRO against powdery mildews of grapevine, potatoes and vegetables. In this study, the efficacy of Valiphenal and other experimental active ingredients was tested for the first time against crown rot of Rose. Phosetyl-Al (Aliette) was used as a reference product. M…
Control of powdery mildew in cut roses using natural products in the greenhouse.
Roses grown under greenhouse cultivation are commonly affected by diseases and regular fungicide applications are commonly used. The aim of this research was to identify natural products that can substitute and reduce the health and environmental impacts of typical chemical treatments in the control of powdery mildew [(Podosphaera pannosa (Wallr. Fr.) de Bary] and grey mould (Botrytis cinerea Pers.). Treatments were applied in the greenhouse on the cut rose cultivars Sunluck (Gold Strike®) and Nirpbredy (New Fashion®) growing in a soilless system. Oregano and clove essential oil at 0.5 ml/l (an emulsifier was added) and sodium bicarbonate (NaHCO3) at 4 g/l were sprayed on rose plants to run…
Evaluation of natural products to control some rose diseases.
Preliminary test to control Spilocaea eriobotryae (Cav.) Hugh, agent of loquat scab, by means of natural products
Root and crown rot of olive caused by Phytophthora spp
Lemon post-harvest decay control by natural products
Postharvest diseases of lemon fruits represent one of the most severe sources of loss production. They are controlled by imazalil (IMZ), thiabendazole (TBZ) and sodium ortho-phenil-phenate (SOPP) registered fungicides for postharvest treatments. Nowadays, the chemical use is becoming more restricted for environmental concerns and development of fungicide-tolerance strains of fungal pathogens. In the last few years a renewed interest in alternative methods of postharvest decay control has been increasing and the research for natural products has provided encouraging results. The aim of this research has been the in vitro and in vivo effectiveness evaluation of six essences (garlic, cloves, o…
Phytophthora species associated with root of olive in Sicily.
Osservazioni sulla suscettibilità al "Marciume verde" causato da Penicillium Corymbiferum West (Shigeo e Abe, 1957)divarietà ed ecotipi di aglio
The antimicrobial actitity of water extracts from Labiatae.
In vitro antimicrobial activity of water extracts of oregano, rosemary and sage were tested against five different fungi (Phytophthora cactorum, Verticillium dahliae, Fusarium oxysporum f.sp. lycopersici, Phoma tracheiphila and Botrytis cinerea). Infusion, decoction and maceration methods were used to obtain the extracts. Their inhibent effect on radial fungal growth was determined at three different concentrations (500 mL/L, 50 mL/L and 5 mL/L). After 4, 8 and 12 days the radial growth of the species was measured and fungitoxicity was recorded in terms of percent colony inhibition. The data obtained showed that while the extracts of rosemary and sage were less effective against all fungi t…
Root and Basal Stem Rot of Rose Caused by Phytophthora citrophthora in Italy
Approximately 800 ha of cut flower roses are cultivated for commercial production in Italy. During autumn of 2004 in an experimental greenhouse in western Sicily (southern Italy), 60% of 2-year-old plants of rose cv. Red France on Rosa indica cv. Major rootstock grown in soil showed leaf chlorosis and wilt. A dark brown lesion lined by a water-soaked area was noticeable at the stem base near the soil surface. Root rot was found consistently associated with aboveground symptoms and plants collapsed within 4 months after the appearance of the first symptoms. The same symptoms were observed sporadically on rose plants of the same cultivar during the last 6 years in commercial nurseries in wes…
Efficacy of Clove Essential Oil an Sodium Bicarbonate to Control Powdwry Mildew and Grey Mould in the Strawberry Crops
Straberry growning in greenhouse is frequently affected by diseases which are controlled by means of chemical products.In order to find an alternative to synthetic fungicides, the antifungal activity of clove essential oil and Sodium bicarbonate were tested to control powdery mildew (causal agent Oìdium fragaria (Harz.)and grey mould and grey mould (Botrytis cinerea Pers.) "in vitro" and in planta essays "In vitro" essay the inhibition efficacy of natural substances was evaluated on O.fragariae conidial germination and on B. cinerea mycelial growth. The results showed a consistent fungicidal activity in all concentrations tested. In planta essay, treatments were carried out in greenhouse on…
Antimicrobial actyvity of main compounds of essential oil extracts from Sygygium aromaticum (L.) Merril et L.M. Perry.
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Indagine preliminare sull'esistenza di eventuali razze fisiologiche di Fusarium oxysporum var. cepae (Hanz.) Sn et Hans, agente della fusariosi dell'aglio
Root and crown tot of olive caused dy Phytophthora spp.
Phytophthora root and crown rot has been traditionally considered a minor disease of olive. However, in recent years it has been recognized as an emerging problem in several olive-growing countries such as Australia, Italy and Spain probably as a consequence of the expansion of plantings in new areas with heavy soils and the more intensive use of irrigation in both olive nurseries and commercial groves. The disease has been reported from most olive-growing countries and is caused by several soil -borne species of Phytophthora, including P. cinnamomi, P. citricola, P. cryptogea, P. drechsleri, P. gonapodyides, P. inundata, P. megasperma,P. nicotianae and P.palmivora. Diagnosis is currently b…