13 results on '"desinfestation"'
Search Results
2. Effect of hot-water immersion on eggs and larvae of Anastrepha grandis (Macquart, 1846) (Diptera: Tephritidae) 'in vitro' and on squash (Cucurbita moschata Duchesne, 1786)
- Author
-
Fernando Berton Baldo and Adalton Raga
- Subjects
cucurbitaceae ,desinfestation ,fruit fly ,insecta ,postharvest treatment ,Science ,Zoology ,QL1-991 - Abstract
Abstract. There are risks involved in the production and exportation of fruit fly hosts due to the possible spread of tephritid pests during distribution. Anastrepha grandis attacks cucurbit fruits and is considered an A1 quarantine pest in many countries. The objective of this study was to evaluate the effect of hot water treatment on the eggs and larvae of A. grandis in vitro, and on ‘Atlas’ squash (Cucurbita moschata). The eggs and third-instar larvae of A. grandis were exposed to hot water at temperatures of 42.0, 44.0, 46.0, 46.5, 47.0, 47.5, 48.0, 49.0 and 50.0 (± 0.5) °C for durations of 0 (control), 10, 20, 30 and 60 minutes. Water temperatures of at least 44 °C affected the in vitro larval eclosion of A. grandis during all exposure times. No adults were obtained when in vitro A. grandis larvae were treated at 49 °C and 50 °C at all exposure times and, 48 °C for 30 and 60 minutes. No adults were obtained when squashes infested with A. grandis eggs or larvae were treated at temperatures of 49 °C and 50 °C during any exposure time, as well as subjected to 48 °C for 20 minutes. Anastrepha grandis larvae were slightly more susceptible to hydrothermal treatment than eggs in squashes. Hot water treatment applies at a temperature of 48 °C for 20 minutes is an effective phytosanitary treatment for squashes cv. Atlas infested with eggs and larvae of A. grandis
- Published
- 2021
- Full Text
- View/download PDF
3. AKTUÁLNÍ ZKUŠENOSTI S VYUŽITÍM NETOXICKÝCH METOD V RÁMCI INTEGROVANÉ OCHRANY PŘED ŠKŮDCI.
- Author
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Šimčíková, Markéta, Šimčík, Antonín, and Baar, Jan
- Subjects
HIGH temperatures ,NATIONAL museums ,ATMOSPHERIC temperature ,ATMOSPHERE ,PEST control ,HUMIDITY - Abstract
Copyright of Fórum pro Konzervátory-Restaurátory is the property of Technical Museum in Brno and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2021
4. Água aquecida e radiação UV-C no controle pós-colheita de Cryptosporiopsis perennans em maçãs Heated water and UV-C radiation to postharvest control of Cryptosporiopsis perennans on apples
- Author
-
Vinícius Adão Bartnicki, Rosa Maria Valdebenito-Sanhueza, Cassandro Vidal Talamini do Amarante, Luis Antônio Suita de Castro, Mara Regina Rizzatti, and João Antônio Vargas de Souza
- Subjects
Malus domestica ,desinfestação ,podridão-olho-de-boi ,pós-colheita ,radiação UV-C ,tratamento térmico ,desinfestation ,bull's eye rot ,postharvest ,UV-C radiation ,heat treatment ,Agriculture (General) ,S1-972 - Abstract
O objetivo deste trabalho foi avaliar a colonização de Cryptosporiopsis perennans na epiderme de maçãs e a eficiência da aplicação de água aquecida e radiação UV-C no controle desse patógeno. Em maçãs submetidas à inoculação de C. perennans, a colonização de lenticelas e das áreas adjacentes pelo patógeno foi avaliada por microscopia eletrônica de varredura. A sensibilidade dos conídios de C. perennans aos tratamentos foi avaliada em suspensão aquosa, às temperaturas de 28, 45, 50 e 55ºC, por 15 e 30 s, e às doses de radiação UV-C de 0,018, 0,037, 0,075, 0,150, 0,375, 0,750, 1,500 e 3,000 kJ m-2. Em maçãs submetidas à inoculação de C. perennans, foram avaliados os efeitos de 0,375, 0,750 e 1,500 kJ m-2 de radiação UV-C e da aspersão de água aquecida à 50ºC, por 15 e 30 s no controle do patógeno. O fungo produziu abundante micélio e conídios nas lenticelas e nas áreas adjacentes, na epiderme das maçãs. A água aquecida a 50ºC por 15 s e à dose de radiação de UV-C de 0,750 kJ m-2 reduzem em mais de 99% a sobrevivência de conídios. A aspersão de água aquecida a 50ºC por 15 s e à dose de radiação de UV-C de 0,375 kJ m-2, controlam C. perennans em maçãs.The objective of this work was to assess the colonization of Cryptosporiopsis perennans in the epidermis of apples and the efficiency of heated water and UV-C radiation application to control this pathogen. In apples inoculated with C. perennans, the colonization of lenticels and adjacent areas by the pathogen was observed by electronic scanning microscopy. The sensitivity of C. perennans conidia was evaluated in aqueous suspension, at temperatures of 28, 45, 50 and 55ºC for 15 and 30 s, and at UV-C radiation doses of 0.018, 0.037, 0.075, 0.150, 0.375, 0.750, 1.500 and 3.000 kJ m-2. The effects of UV-C radiation doses at 0.375, 0.750 and 1.500 kJ m-2 and heated water at 50ºC, sprayed during 15 and 30 s were evaluated for controlling C. perennans in apples inoculated with the pathogen. The fungus produced abundant mycelium and conidia in lenticels and adjacent areas on the epidermis of the apples. The heated water at 50ºC during 15 s and a 0.750 kJ m-2 UV-C radiation dose reduced conidia survival in more than 99%. Heated water sprayed at 50ºC during 15 s and a UV-C radiation dose of 0.375 kJ m-2 control C. perennans in apples.
- Published
- 2010
- Full Text
- View/download PDF
5. In vitro establishment of introduced blackberry cultivars (Rubus spp) from axillary buds.
- Author
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Vélez-Torres, Marcelina, Arellano-Ostoa, Gregorio, Cruz-Gutiérrez, Esmeralda J., and CalderónZavala, Guillermo
- Subjects
- *
BLACKBERRIES , *GELLAN gum , *PLANT micropropagation , *VITAMIN C , *FACTORIAL experiment designs , *CULTIVARS , *RUBUS - Abstract
Blackberries (Rubus spp.) are a natural source of beneficial nutritional elements for human health and protocols are required for their micropropagation. The objective was to develop an in vitro establishment protocol for four introduced blackberry cultivars of free use, through axillary buds. A completely randomized factorial experimental design was carried out, with three factors (Cultivars: Kiowa, Cheyenne, Apache, Ebano; disinfestation methods: A, B, C; culture media: T1, T2, T3, T4, T5), and four replications. The response variables were: callus formation, percentage of oxidation and contamination. Software SAS was used for statistical analysis. The best disinfestation method was: ascorbic acid (150 mg L-1 ) + liquid soap (five minutes) + alcohol 70% (two minutes) + chlorine 30% (five minutes) + ascorbic acid (150 mg L -1 ), and the best culture medium: MS + benzylaminopurine (0.2 mg L-1 ) + sucrose (25 g L-1 ) + gellan gum (1.3 g L-1 ) + agar (3 g L-1 ) + pH 5.8. These procedures allowed the in vitro establishment of the four blackberry cultivars. [ABSTRACT FROM AUTHOR]
- Published
- 2023
6. Estabelecimento e multiplicação in vitro de Physalis peruviana L. In vitro establishment and multiplication of Physalis peruviana L.
- Author
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Anderson da Costa Chaves, Márcia Wulff Schuch, and Alan Cristiano Erig
- Subjects
Pequenas frutas ,Physalis ,micropropagação ,desinfestação ,Small fruits ,Micropropagation ,Desinfestation ,Agriculture (General) ,S1-972 - Abstract
Visando o estabelecimento e a multiplicação in vitro de Physalis, foram realizados dois experimentos. Para o estabelecimento, testou-se 5 procedimentos de desinfestação das sementes (P1: Álcool 70% durante 30 segundos; P2: Hipoclorito de Sódio 2,5% durante 3 minutos; P3: Hipoclorito de Cálcio 2,5% por 3 minutos; P4: Álcool 70% por 30 segundos + Hipoclorito de Sódio 2,5 % por 3 minutos; P5: Álcool 70% por 30 segundos + Hipoclorito de Cálcio por 3 minutos). Metade das sementes foi mantida no escuro e a outra metade foi transferida para sala de crescimento com 16 horas de fotoperíodo, densidade de fluxo luminoso de 42 µmol.m-2 s-1 e temperatura de 25 + 2 ºC. Ao final dos 28 dias, o procedimento 3 mostrou as maiores taxas de contaminação in vitro . Sendo que as maiores porcentagens de germinação foram obtidas nos procedimentos de desinfestação 1, 2 e 4. Para a multiplicação foram avaliados os meios de cultura MS e MS¾ (reduzido em 25% dos sais do meio inteiro), e as concentrações de: 0,0; 0,1; 0,2 ou 0,3 mg L-1 de BAP. Foram utilizados frascos com 30 mL de meio de cultura com o pH ajustado para 5,8 e ágar na concentração de 6 g L-1. Ao final de 21 dias, observou-se maior número de brotações na concentração de 0,3 mg L-1 de BAP para os dois meios de cultura estudados.Aiming the in vitro establishment and the multiplication of Physalis peruviana L., two experiments were conducted. For the establishment it was tested five procedures of desinfestation of the seeds, (P1: alcohol 70% for 30 seconds; P2: sodium hypochlorite 2.5% for three minutes; P3: calcium hypochlorite 2.5% for three minutes; P4: alcohol 70% for 30 seconds + sodium hypochlorite 2.5% for three minutes; P5: alcohol 70% for 30 seconds + calcium hypochlorite for three minutes). Half of the seeds were maintained in the darkness and the other half were transferred for growth room with 16 hour- photoperiod, luminous flow density of 42 µmol.m-2 s-1 and temperature of 25 + 2 ºC. After 28 days the procedure 3 showed the highest in vitro contamination rates. And the highest percentages of germination were obtained in the procedures of desinfestation 1, 2 and 4. For the multiplication they were evaluated in the culture mediuns MS and MS¾ (reduced in 25% of the salts of the full strenght), and the concentrations of 0; 0.1; 0.2 and 0.3 mg L-1 of BAP. Flasks were used with 30 ml of culture medium with the pH adjusted for 5.8 and with 6 g L-1 of agar. After 21 days larger shoots number was observed with 0.3 mg L-1 of BAP for the two culture mediuns studied.
- Published
- 2005
- Full Text
- View/download PDF
7. DESINFESTAÇÃO IN VITRO DA BANANEIRA 'FARTA VELHACO (SUB GRUPO AAB)' EM DIFERENTES CONCENTRAÇÕES DE CLORO ATIVO.
- Author
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ALVES PEREIRA, GUSTAVO, BOBROFF SANTAELLA, MARCÍLIO, MONTENEGRO ALVES, LEFAYETE MICHELE SANTANA, and DA SILVA, ELDER CASSIMIRO
- Abstract
Copyright of Revista Caatinga is the property of Revista Caatinga and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2015
- Full Text
- View/download PDF
8. DESINFESTAÇÃO IN VITRO DA BANANEIRA 'FARTA VELHACO (SUB GRUPO AAB)' EM DIFERENTES CONCENTRAÇÕES DE CLORO ATIVO
- Author
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Marcílio Bobroff Santaella, Elder Cassimiro Da Silva, Lefayete Michele Santana Montenegro Alves, and Gustavo Alves Pereira
- Subjects
lcsh:S ,chemistry.chemical_element ,Micropropagation ,Desinfestation ,Biology ,Contamination ,biology.organism_classification ,Rhizome ,lcsh:Agriculture ,Horticulture ,chemistry ,lcsh:Biology (General) ,Botany ,Chlorine ,polycyclic compounds ,Musa sp ,Micropropagação ,Estabelecimento ,General Agricultural and Biological Sciences ,lcsh:QH301-705.5 ,Bacteria ,Explant culture - Abstract
RESUMO: A maioria dos plantios de bananeira são realizados utilizando mudas tradicionais do tipo chifre e rizomas. Outros métodos de propagação, como a micropropagação, vêm sendo desenvolvidos e aperfeiçoados com fim a elevar a taxa de multiplicação em curto espaço de tempo e melhorar a qualidade fitossanitária das mudas. Contudo, a contaminação por bactérias e fungos é um dos maiores problemas dessa técnica. O objetivo do presente trabalho foi avaliar a desinfestação in vitro utilizando concentrações de cloro ativo em explantes de bananeira 'Farta Velhaco'. O delineamento experimental utilizado foi inteiramente casualizado constituído de cinco tratamentos e cinco repetições, sendo cada uma destas representada por cinco explantes em diferentes concentrações de cloro ativo durante vinte minutos, quais sejam: T1 - testemunha sem cloro ativo; T2 - 0,5% de cloro ativo; T3 - 1,0% de cloro ativo; T4 - 1,5% de cloro ativo; e T5 - 2% de cloro ativo. Foram avaliadas as porcentagens de contaminação por bactérias e fungos, como também a porcentagem de oxidação dos explantes. Os dados foram submetidos às análises de variância e de regressão. Os resultados permitiram concluir que a maior eficiência dentre os tratamentos testados foi o de imersão dos explantes em 1% de cloro ativo, o qual proporcionou redução em 95% e 90%, respectivamente, para bactérias e fungos e 60% dos explantes oxidados. Concluiu-se que essa concentração pode ser utilizada para o controle de contaminações para micropropagação de bananeira ´Farta Velhaco'. ABSTRACT: Most banana plantations are still made using traditional clones per type horn and rhizomes. Other propagation methods such as micropropagation have been developed and perfected to raise the rate of multiplication in a short time and improve the health status of the seedlings. However, contamination by bacteria and fungi is one of the biggest problems of this technique. The aim was to evaluate the in vitro disinfestation using active chlorine concentrations of banana explants 'Farta Velhaco'. The experimental design used was completely randomized consisting of five treatments and five repetition, each replicate represented by five explants in different concentrations of active chlorine for twenty minutes: T1 - without active chlorine, T2 - 0.5% active chlorine, T3 - 1.0% of active chlorine, T4 - 1.5% active chlorine and T5 - 2% active chlorine. The percentages of contamination by bacteria and fungi as well as the percentage of oxidation of the explants were evaluated. Data were subjected to analysis of variance and regression analysis. The results showed that the highest efficiency among the tested treatments was the immersion of explants in 1% of active chlorine that caused a reduction in 95% and 90% respectively for bacteria and fungi and 60% of explants oxidation. It was concluded that this concentration can be used to control contamination for micropropagation of banana 'Farta Velhaco'.
- Published
- 2015
9. Modelling the mortality of Hylotrupes bajulus (L.) larvae exposed to anoxic treatment for disinfestation of wooden art objects (conference IPM)
- Author
-
UCL - SST/ELI/ELIE - Environmental Sciences, de Streel, Géraud, Henin, Jean-Marc, Bogaert, Patrick, Mercier, Emmanuelle, Rabelo, Erika, Vincke, Caroline, Jourez, Benoît, UCL - SST/ELI/ELIE - Environmental Sciences, de Streel, Géraud, Henin, Jean-Marc, Bogaert, Patrick, Mercier, Emmanuelle, Rabelo, Erika, Vincke, Caroline, and Jourez, Benoît
- Abstract
Experiments were conducted to quantify the effect of several variables on the mortality of insects exposed to an anoxic treatment in order to generate a model linking mortality to these variables. This study aims to explore the possible interest of using such a model to determine the characteristics of treatment (especially duration) needed to guarantee insect mortality with a given level of probability. Trials were performed on Hylotrupes bajulus larvae, which is a widespread species known for its high tolerance to anoxic conditions. The studied variables are the initial mass of the larvae, the treatment temperature (21, 30 and 40 _C), the treatment duration (four durations for each temperature tested) and whether the larva is held in wood or in a petri dish (directly exposed to anoxic atmosphere) during the experiment. It was found that, while the last variable is not correlated with mortality, treatment duration and temperature are significantly and positively correlated with it. Larvae with higher body mass were also shown to have a better resistance to the treatment. Based on these results, a model including insect initial mass, treatment temperature and duration, together with the interaction between these two variables, was determined. This relatively simple model appeared to be a useful tool in overcoming the difficulty in defining the modalities for anoxic treatment in order to reach a given level of mortality.
- Published
- 2016
10. Água aquecida e radiação UV-C no controle pós-colheita de Cryptosporiopsis perennans em maçãs
- Author
-
Bartnicki, Vinícius Adão, Valdebenito-Sanhueza, Rosa Maria, Amarante, Cassandro Vidal Talamini do, Castro, Luis Antônio Suita de, Rizzatti, Mara Regina, and Souza, João Antônio Vargas de
- Subjects
UV-C radiation ,desinfestation ,Malus domestica ,desinfestação ,heat treatment ,podridão-olho-de-boi ,tratamento térmico ,bull's eye rot ,pós-colheita ,radiação UV-C ,postharvest - Abstract
O objetivo deste trabalho foi avaliar a colonização de Cryptosporiopsis perennans na epiderme de maçãs e a eficiência da aplicação de água aquecida e radiação UV-C no controle desse patógeno. Em maçãs submetidas à inoculação de C. perennans, a colonização de lenticelas e das áreas adjacentes pelo patógeno foi avaliada por microscopia eletrônica de varredura. A sensibilidade dos conídios de C. perennans aos tratamentos foi avaliada em suspensão aquosa, às temperaturas de 28, 45, 50 e 55ºC, por 15 e 30 s, e às doses de radiação UV-C de 0,018, 0,037, 0,075, 0,150, 0,375, 0,750, 1,500 e 3,000 kJ m-2. Em maçãs submetidas à inoculação de C. perennans, foram avaliados os efeitos de 0,375, 0,750 e 1,500 kJ m-2 de radiação UV-C e da aspersão de água aquecida à 50ºC, por 15 e 30 s no controle do patógeno. O fungo produziu abundante micélio e conídios nas lenticelas e nas áreas adjacentes, na epiderme das maçãs. A água aquecida a 50ºC por 15 s e à dose de radiação de UV-C de 0,750 kJ m-2 reduzem em mais de 99% a sobrevivência de conídios. A aspersão de água aquecida a 50ºC por 15 s e à dose de radiação de UV-C de 0,375 kJ m-2, controlam C. perennans em maçãs. The objective of this work was to assess the colonization of Cryptosporiopsis perennans in the epidermis of apples and the efficiency of heated water and UV-C radiation application to control this pathogen. In apples inoculated with C. perennans, the colonization of lenticels and adjacent areas by the pathogen was observed by electronic scanning microscopy. The sensitivity of C. perennans conidia was evaluated in aqueous suspension, at temperatures of 28, 45, 50 and 55ºC for 15 and 30 s, and at UV-C radiation doses of 0.018, 0.037, 0.075, 0.150, 0.375, 0.750, 1.500 and 3.000 kJ m-2. The effects of UV-C radiation doses at 0.375, 0.750 and 1.500 kJ m-2 and heated water at 50ºC, sprayed during 15 and 30 s were evaluated for controlling C. perennans in apples inoculated with the pathogen. The fungus produced abundant mycelium and conidia in lenticels and adjacent areas on the epidermis of the apples. The heated water at 50ºC during 15 s and a 0.750 kJ m-2 UV-C radiation dose reduced conidia survival in more than 99%. Heated water sprayed at 50ºC during 15 s and a UV-C radiation dose of 0.375 kJ m-2 control C. perennans in apples.
- Published
- 2010
11. Estabelecimento e multiplicação in vitro de Physalis peruviana L
- Author
-
Márcia Wulff Schuch, Alan Cristiano Erig, and Anderson da Costa Chaves
- Subjects
General Veterinary ,Physalis ,desinfestação ,Chemistry ,Soil Science ,Micropropagation ,micropropagação ,Small fruits ,Horticulture ,Animal Science and Zoology ,Pequenas frutas ,Desinfestation ,Agronomy and Crop Science ,Food Science - Abstract
Visando o estabelecimento e a multiplicação in vitro de Physalis, foram realizados dois experimentos. Para o estabelecimento, testou-se 5 procedimentos de desinfestação das sementes (P1: Álcool 70% durante 30 segundos; P2: Hipoclorito de Sódio 2,5% durante 3 minutos; P3: Hipoclorito de Cálcio 2,5% por 3 minutos; P4: Álcool 70% por 30 segundos + Hipoclorito de Sódio 2,5 % por 3 minutos; P5: Álcool 70% por 30 segundos + Hipoclorito de Cálcio por 3 minutos). Metade das sementes foi mantida no escuro e a outra metade foi transferida para sala de crescimento com 16 horas de fotoperíodo, densidade de fluxo luminoso de 42 µmol.m-2 s-1 e temperatura de 25 + 2 ºC. Ao final dos 28 dias, o procedimento 3 mostrou as maiores taxas de contaminação in vitro . Sendo que as maiores porcentagens de germinação foram obtidas nos procedimentos de desinfestação 1, 2 e 4. Para a multiplicação foram avaliados os meios de cultura MS e MS¾ (reduzido em 25% dos sais do meio inteiro), e as concentrações de: 0,0; 0,1; 0,2 ou 0,3 mg L-1 de BAP. Foram utilizados frascos com 30 mL de meio de cultura com o pH ajustado para 5,8 e ágar na concentração de 6 g L-1. Ao final de 21 dias, observou-se maior número de brotações na concentração de 0,3 mg L-1 de BAP para os dois meios de cultura estudados. Aiming the in vitro establishment and the multiplication of Physalis peruviana L., two experiments were conducted. For the establishment it was tested five procedures of desinfestation of the seeds, (P1: alcohol 70% for 30 seconds; P2: sodium hypochlorite 2.5% for three minutes; P3: calcium hypochlorite 2.5% for three minutes; P4: alcohol 70% for 30 seconds + sodium hypochlorite 2.5% for three minutes; P5: alcohol 70% for 30 seconds + calcium hypochlorite for three minutes). Half of the seeds were maintained in the darkness and the other half were transferred for growth room with 16 hour- photoperiod, luminous flow density of 42 µmol.m-2 s-1 and temperature of 25 + 2 ºC. After 28 days the procedure 3 showed the highest in vitro contamination rates. And the highest percentages of germination were obtained in the procedures of desinfestation 1, 2 and 4. For the multiplication they were evaluated in the culture mediuns MS and MS¾ (reduced in 25% of the salts of the full strenght), and the concentrations of 0; 0.1; 0.2 and 0.3 mg L-1 of BAP. Flasks were used with 30 ml of culture medium with the pH adjusted for 5.8 and with 6 g L-1 of agar. After 21 days larger shoots number was observed with 0.3 mg L-1 of BAP for the two culture mediuns studied.
- Published
- 2005
12. Influence d'une technique de désinfestation par micro-ondes sur les critères de qualité physico-chimiques et biochimiques de la datte
- Author
-
Reynes, Max, Institut National Polytechnique de Lorraine (INPL), Institut National Polytechnique de Lorraine, Maurice Metche, and Du Ccsd, Administrateur
- Subjects
Microondes ,Qualité physico-chimique ,[SDV.AEN] Life Sciences [q-bio]/Food and Nutrition ,Datte ,Biochimie ,Aliments -- Odeur ,Désinfestation ,Dattes ,[SDV.AEN]Life Sciences [q-bio]/Food and Nutrition ,Dispositifs à microondes - Abstract
Not available, La production de la datte représente 3,4 millions de tonnes dans le monde et permet à de nombreuses populations de vivre et à certains pays d'obtenir des devises par l'exportation. Les principaux critères de qualité des dattes sont affectés par les infestations et les procédés utilisés pour les traiter, stabiliser, et conditionner. Les résultats du travail effectués portent sur l'analyse des principaux critères de qualité des dattes de Tunisie reliés à l'aspect variétal (la variété Deglet Nour est prise en référence) : les teneurs en sucres, amidon, acides amines, acides organiques et minéraux principalement. Il a été montré que la différenciation variétale pourrait être obtenue par les analyses des aromes. L’influence sur ces critères du traitement de désinfestation actuel, basé sur l'utilisation du bromure de méthyle (toxique, dangereux, et bientôt interdit) se traduit par une modification des teneurs en acides aminés et l'apparition de composés méthylés. Le traitement basé sur l'utilisation des micro-ondes permet de désinfester les dattes à une température de 65°C durant 3 minutes du fait de la forte réactivité des dattes aux microondes. L’effet de ce traitement sur le pH, la teneur en eau, les polyphénols, les aromes, les acides galacturoniques, mais aussi sur l'invertase, les activités polyphénoliques et péroxydasiques permettent de conclure que la qualité des dattes ne semble pas être affectée par le traitement qui pourrait être un moyen de substitution à la fumigation. Le traitement permet de conserver la couleur claire des dattes comme tel que demande par le marché.
- Published
- 1997
13. A solar collector for soil disinfestation
- Author
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R. Ghini and RAQUEL GHINI, CNPMA.
- Subjects
solar energy ,Sclerotium ,Diseases ,Plant propagation ,soil solarization ,Sclerotinia sclerotiorum ,Damping off ,Soil solarization ,pathogens ,Plant Science ,Horticulture ,Biology ,Plants ,biology.organism_classification ,Solarisation ,Agronomy ,Desinfestation ,Pythium aphanidermatum ,Agronomy and Crop Science ,Fusarium solani - Abstract
A solar collector to be used for disinfestation of substrates for plant propagation is described. At a high solar radiation intensity, one day of treatment was sufficient for disinfestation of soil infested with Sclerotium rolfsii, Sclerotiorum, Fusarium solani f. sp. phaseoli or Phytium aphanidermatum. Treatment of soil in the solar collector strongly reduced the total numbers of fungi, bacteria and actinomycetes. Nutrient status of the soil was only slightly changed and did not result in effect on plant growth. Made available in DSpace on 2016-11-21T23:00:32Z (GMT). No. of bitstreams: 1 1993AP008GhiniSolar1286.pdf: 483642 bytes, checksum: f426530c8156cf84a95e42d9ce53f0e1 (MD5) Previous issue date: 1993-07-08
- Published
- 1993
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