Made available in DSpace on 2014-06-11T19:35:06Z (GMT). No. of bitstreams: 0 Previous issue date: 2010-01-29Bitstream added on 2014-06-13T20:45:58Z : No. of bitstreams: 1 mendonca_agr_dr_araiq.pdf: 5684091 bytes, checksum: 9b3a80cd7c8f6c2fa5faeeb3ca0ed1b9 (MD5) / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) / Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) / Turfas apresentam em média 80% de compostos orgânicos em sua composição. A variedade e elevada quantidade de grupos funcionais, principalmente oxigenados, nitrogenados e sulfurados, possibilitam elevada capacidade de interação com espécies metálicas, formando compostos de diferentes estabilidades. Além da importante função ambiental, tais como participação em processos de acúmulo, transporte e disponibilidade de espécies metálicas no ambiente, as turfas possuem várias aplicações comerciais, dentre elas, destaca-se a remediação de áreas contaminadas e utilização na agricultura e horticultura, onde são empregadas como adubo natural. Quanto à aplicação de turfas no setor agrícola, há uma crescente procura pela adubação orgânica. Neste caso, existem várias questões em aberto como, por exemplo, a necessidade de entendimento da disponibilização ou não de nutrientes pela matéria orgânica, quando enriquecida com macro e micro nutrientes essenciais. Neste trabalho, foram estudadas as interações de espécies metálicas (Cu, Mg, Ca, Zn, Mn e Fe) com turfas e substâncias húmicas extraídas dessas matrizes. Foram coletadas amostras de turfas no Distrito de Taquaral-SP e no município de São Simão-SP. As amostras foram caracterizadas com diferentes técnicas, tais como: granulometria, infra-vermelho, análise elementar, RMN 13 C CP- MAS / RMN DOSY e HPSEC. Foram determinadas as capacidades de complexação e constantes de troca entre as substâncias húmicas extraídas das amostras de turfas e espécies metálicas. Experimentos em casa de vegetação (UNESP – Jaboticabal) foram feitos para avaliar a influência das diferentes amostras e das quantidades de turfas no desenvolvimento e estado nutricional das plantas testadas (milho e rabanete). Os resultados deste trabalho contribuem no melhor entendimento sobre alguns fatores que influenciam... / Peats of natural origin have on average 80% of organic compounds in its composition. The variety and high quantity of functional groups, mainly oxygen, nitrogen and sulfur, enable high capacity for interaction with metal species, forming compounds of different stability. Beyond the environmental importance, such as participation in processes of accumulation, transportation and disposal of metal species in the environment, peats have various commercial applications, among which stands out the remediation of contaminated areas and the use in agriculture and horticulture, where they are used as natural fertilizer. As for the application of peats in the agricultural sector, there is a growing demand for organic fertilizer. In this case, there are several open issues such as the need for understanding the availability or not of nutrients in organic matter, when enriched with macro and micro essential nutrients. In this work, were have studied the interactions of metal species (Cu, Mg, Ca, Zn, Mn and Fe) with peats and humic substances. Peat samples were collected in the Taquaral-SP district and the São Simão-SP city. The samples were characterized with different techniques, such as size, infrared spectroscopy, elemental analysis, 13 C NMR CP-MAS / NMR DOSY and HPSEC. The capacity of complexation and exchange constants between humic substances extracted from peat samples and metal species were determined. Experiments in a greenhouse (UNESP - Jaboticabal) were carried out to evaluate the influence of the different samples and the quantities of peat in the development and status of tested plants (corn and radish). The results of this study contribute for a better understanding of factors that influence the interactions between metal species and soil organic matter, for improvements in agricultural practices, aiming at better yields and less environmental impacts

Resumo: Várias oleaginosas estão sendo estudadas para a produção de biocombustíveis. O processamento do grão para a obtenção do óleo resulta numa diversidade de subprodutos, entre eles o farelo de nabo forrageiro (Raphanus sativus) que, por possuir alto teor protéico, se apresenta como possível sucedâneo do farelo de soja nas rações. Entretanto, faltam informações de seu valor nutritivo e da ação dos fatores antinutricionais presentes. Este estudo foi realizado na Unesp - Universidade Estadual Paulista, da Faculdade de Medicina Veterinária e Zootecnia, Campus de Botucatu, para determinar os coeficientes de digestibilidade aparente (CDA) da matéria seca (MS), proteína bruta (PB), energia bruta (EB), aminoácidos (AA) e a disponibilidade do fósforo do farelo de nabo forrageiro, pela tilápia-do-Nilo. Empregouse uma ração purificada (referência) e uma ração composta de 60% da ração referência e 40% do farelo de nabo forrageiro. O farelo de nabo forrageiro apresentou 91,28% de MS; 42,07% de PB, 4256 kcal/kg de EB, 3,47% de EE, 7,37% de FB, 1,25% de cálcio e 1,0% de fósforo. Os CDA foram de 55,92% para MS, 82,10% para PB, 75,26% para EB e 85,23% do fósforo. Os CDA dos AA estiveram entre 81,12% para a glicina e 95,11% para o ácido glutâmico. Os resultados demonstram que o farelo de nabo forrageiro apresenta potencial para ser usado como fonte protéica alternativa para compor a ração da tilápia do Nilo. / Abstract: Oil seeds have been studied to produce bio combustibles. In order to obtain oil, seed processing results in several byproducts, among them, the fodder radish meal (Raphanus sativus) which has high protein content. This byproduct is a potential substitute to soybean meal in feed manufacture. However, there is a lack of information regarding its nutritional value and the anti-nutritional content and effects. This study was conduced at the Veterinary Medicine and Animal Science College from Sao Paulo State University, Botucatu, to determine the apparent digestibility coefficient (ADC) of dry matter (DM), crude protein (CP), raw energy (RE), amino acids (A) and phosphorus availability. The fish were fed a purified feed (base diet) and a 60% base diet plus 40% of fodder radish meal feed. Radish meal presented 91.98% DM, 42% CP, 4256 kcal/kg RE, 3.47% Ether extract, 7.37% crude fiber, 1.25% calcium and 1.0% phosphorus. The ADC values were DM: 55.92%, CP: 82.10%, RE: 75.26% and phosphorus: 85.23%. The ADC value for AA was 81.12% for glycine and 95.11% for glutamic acid. The results presented a potential utility for radish meal as an alternative protein source for Nile tilapia feeds. / Orientador: Luiz Edivaldo Pezzato / Coorientador: Margarida Maria Barros / Banca: Wilson Maddamitu Furuya / Banca: José Roberto Sartori / Mestre

Orientador: Sérgio Hugo Benez / Banca: Silvio Jose Bicudo / Banca: Elcio Hiroyoshi Yano / Banca: Luiz Malcolm Mano de Mello / Banca: Antonio Renan Berchol da Silva / Resumo: O presente trabalho teve como objetivo comparar dois tipos de cobertura vegetal de inverno, através de três sistemas de manejo do solo, avaliando seus efeitos no crescimento e desenvolvimento da cultura de milho. Os experimentos foram instalados e conduzidos na Fazenda Experimental Lageado, da Faculdade de Ciências Agronômicas da UNESP, Campus de Botucatu, no período compreendido entre fevereiro de 2005 e maio de 2006, em NITOSSOLO VERMELHO Distroférrico, cultivado há nove anos com os mesmos sistemas de manejo do solo. Os experimentos foram constituídos de seis tratamentos com quatro repetições utilizando o delineamento experimental de blocos ao acaso com parcelas subdivididas. As parcelas foram constituídas por três sistemas de manejo do solo (preparo convencional, constituído por uma gradagem pesada e duas gradagens leves; cultivo mínimo, escarificador equipado com disco de corte e rolo destorroador, trabalhando na profundidade entre 25 e 30 cm e plantio direto, com dessecação da vegetação de cobertura por meio de aplicação de herbicida) e as subparcelas foram compostas por duas culturas de inverno (nabo forrageiro, Raphanus sativus L. e nabiça, Raphanus raphanistrum L.), que conseqüentemente formaram os dois tipos de coberturas vegetais, sobre as quais foram realizados os sistemas de manejo do solo para a implantação da cultura de milho. Os dados obtidos foram submetidos à análise de variância com teste de Tukey a 5% de probabilidade para comparar as médias. As análises estatísticas demonstraram que o sistema de plantio direto apresentou maior densidade e resistência mecânica do solo à penetração, quando comparado ao preparo convencional e ao cultivo mínimo. O cultivo mínimo apresentou maiores valores de profundidade de trabalho, área de solo mobilizada e capacidade de campo efetiva e menores valores de tempo efetivo demandado, uso específico... (Resumo completo, clicar acesso eletrônico abaixo) / Abstract: This paper aims to compare two types of winter vegetal covering, through three soil tillage systems, evaluating their effects in growth and development of corn crop. Experiments were installed and carried out at Lageado Experimental Farm at Agricultural Science University of UNESP, Botucatu Campus, from february 2005 to may 2006, in Distroferic Red Nitosoil, which has been cultivated for nine years under the same soil tillage systems. Experiments were carried out in six treatments with four repetitions, using randomized experimental blocks with subdivided parts. Parts were made up by three soil tillage systems (conventional tillage, made up by one heavy harrow and two leveling harrow; minimum tillage, with chisel plow with cut disk and roll, working at 25 to 30 cm deep and notillage, with herbicide drying coverage vegetation) and subparts were made up by two winter crops (Raphanus sativus L. and Raphanus raphanistrum L.) which made up the two vegetal coverings over which the soil tillage systems were carried out for corn cropping. Obtained data were analyzed by Turkey variance test at 5% of probability for comparing averages. Statistical analysis showed that no-tillage system had higher density as well as mechanical soil resistance to penetration, when compared to conventional and minimum tillages. Minimum tillage system showed higher values of work deepness, mobilized soil area as well as effective field capacity and lower values of demanded real time, specific energy use and fuel consumption. For Raphanus sativus L. and Raphanus raphanistrum L., sowing it was observed that no-tillage system showed lower traction force, steering bar power, demanded real time, specific energy use and fuel consumption. Raphanus raphanistrum L. showed higher length, volume and root dry matter compared to Raphanus sativus L., meantime not observed statistical differences between both. Raphanus raphanistrum...(Complete abstract click electronic access below) / Doutor

Philosophiae Doctor - PhD / In different parts of the world, medicinal plants have demonstrated a lot of health benefits to mankind and remains an important source for the discovery of new bio-active compounds. Libya is a typical example of a country where medicinal plants are widely used. Plant extracts of five Libyan medicinal plants were used in this study to investigate their in vivo effects on spermatogenesis and steroidogenesis in male rats and on ovulation and fertility in female rats. The In vitro effects of these plant extracts were also investigated on TM3 Leydig cells and MCF 7 breast cancer cells. A phyto-chemical analysis of the five Libyan medicinal plants (flaxseed, black seeds, radish seed, date palm pollen and nutmeg) was done. The results showed that date palm pollen had a higher antioxidant activity than all of the above mentioned plants. In addition to this, Nigella sativa was observed to possess high flavonol content as well as high antioxidant activity. Male rats exposed to flaxseed, radish seeds and date palm pollen showed no significant alterations in body weight gain, whereas date palm pollen (240 mg/kg, p < 0.05) promoted an increase in body gain. This study also revealed a significant increase in the relative testicular weight of animals exposed to either flaxseed (300mg/kg) or date palm pollen (120mg/kg). In addition, the relative weights of the seminal vesicles of all treated groups showed significant increased values. The level of serum testosterone showed a significant increase after exposure to radish seed (80mg/kg) and a significant dose- dependent increase for date palm pollen when compared to control (P< 0.05). In contrast, flaxseed caused a dose-dependent significant (p <0.01) decrease in testosterone level at radish seed (300mg/Kg). All plant extracts caused a significant increase in sperm concentration. Sperm vitality significantly (p < 0.05) increased by radish seed (80mg/kg), flaxseed (300mg/kg) and date palm pollen (120, 240mg/kg) respectively. Total progressive motility improved significantly at flaxseed (300 mg/kg) (p < 0.001) as well as date palm pollen (p < 0.01). Histological examination of the cross sections of the testis showed clear presence of all stages of spermatogenesis in all the treated groups. Rat epididymides showed normal morphological appearance and their lumen were filled with spermatozoa. The diameter of seminiferous tubules in male rats exposed to date palm pollen (120 and 240 mg/kg) was significantly higher (p < 0.001). The heights of the germ cell epithelia within the eminiferous tubules were also significantly increased in all treated groups. Liver and renal functions tests showed a significant decrease in Alanine transaminase (ALT) and creatinine in all treated groups (p < 0.05), and this demonstrates the lack of cytotoxic effects of date palm pollen, radish seed and flaxseed on the rats. However, these plant extracts produced a non-significant (p > 0.05) increase in Aspartate transaminase (AST) levels. Besides this, superoxide dismutase activity (SOD) in testis was increased significantly by radish seed (160 mg/kg), flaxseed (200 mg/kg) and date palm pollen (120 mg/kg). There was also improved catalase activity in testis of male rats exposed to radish seed and date palm pollen. Regarding male sexual behavior, the time to reach the female and the mount frequency decreased significantly in male rats exposed to flaxseed (300 mg/kg) and date palm pollen (120 and 240 mg/kg; p > 0.05) thus, these plant extracts exhibit aphrodisiac properties. In addition, exposure of male rats to date palm pollen (120 mg/kg) produced a significant (p < 0.01) increase in the number of embryos in untreated female rats. In the female rats, the body weight gain was not affected (p > 0.05). However, the relative uterus weights exposed to nutmeg (200 mg/kg) and date palm pollen (120 and 240 mg/kg) were significantly decreased (p < 0.05). In addition, the relative weights of ovaries after treatment with nutmeg (400 mg/kg) and black seed (400 mg/kg) showed significantly increased values (p < 0.01). Serum FSH was significantly increased (p > 0.05 or 0.01) when the female rats have been exposed to black seed (200 mg/kg), nutmeg (200 mg/kg) or date palm pollen (120 mg/kg). The LH level significantly (p < 0.01) decreased following exposure to black seed (200 mg/kg), date palm pollen (120 mg/kg). On the other hand, serum LH concentration was significantly increased in female rats exposed nutmeg (400 mg/kg; p > 0.05). The creatinine activity in female rat serum in all treated groups was significantly decreased (p < 0.05). Whereas the higher dose of date palm pollen (240 mg/kg) caused only a non-significant decrease. ALT activity in serum of female rat exposed to either black seed (400 mg/kg) or date palm pollen (120 and 240 mg/kg) was shown to decrease significantly (p < 0.05). Histology of the reproductive organs, kidney and liver in the female rats showed no obvious alterations in any of the treated groups. In addition, the number of embryos in female rats significantly increased (p < 0.01; p < 0.001) following exposure of female rats to black seeds 400 and date palm pollen 240 mg/kg, respectively. Incubation of TM3 Leydig cells with radish seeds for 24, 48 or 72 hours caused a significant (p < 0.01) decrease in mitochondrial dehydrogenase activity. Besides that, date palm pollen and flaxseed increased the mitochondrial dehydrogenases activity of TM3 Leydig cells. In addition, higher concentration of date palm pollen, nutmeg and black seed were cytotoxic to MCF7 breast cells. In testis slices testosterone secretion in vitro was significantly increased by flaxseed (500 μg/ml; p > 0·05) and date palm pollen (500 μg/ml; p > 0·01). MCf-7 cells treated with BS 10-50 μg/ml black seed and nutmeg 10-50μg/ml significantly increased cell proliferation. However, the treatment with date palm pollen produced only a weak estrogenic effect, which resulted in a concentration dependent significant increase as observed between 50-1000 μg/ml date palm pollen. In conclusion, in this study, we observed that date palm pollen, radish seed and flaxseed increased libido as well as steroidogenesis and spermatogenesis, improved hepato and nephron-protective effects. In female rats, the plant extracts NM, BS and date palm pollen potentiated the production of gonadotropic hormones. In addition to this, at lower concentrations these medicinal plants promoted cell growth, whereas at higher concentrations they inhibited cell proliferation of MCF- 7 breast cancer cells. The anti-oxidant effects of these plant extracts have been implicated for the above mention effects.

Made available in DSpace on 2016-06-02T18:55:27Z (GMT). No. of bitstreams: 1 5919.pdf: 863312 bytes, checksum: 94d742c1d646f4987c489e8e1ccee135 (MD5) Previous issue date: 2014-02-06 / Financiadora de Estudos e Projetos / Due to increasingly irrigation water source scarcity, treated wastewater (TWW) is becoming a more attractive by nutrients source, showing sanitary and agronomics feasibility. In this way, this research evaluated, in a greenhouse conditions influence of superficial drip irrigation on radish (Raphanus sativus L.) cv. Crimson Giant production and nutritional status, as well as, soil chemical attributes changes; and, soil and radish sanitary contamination risk submitted to two water sources. The experiment was carried out at CCA/UFSCar, Araras, SP and a completely randomized design was adopted, with two treatments [AB- potable water (PW) and AR- treated wastewater (TWW)]. Soil and radish sample were submitted to sanitary analyses. The results showed that drip TWW didn t commit radish nutritional, production and increased macronutrients availability. However, soil sodium adsortion ratio (SAR) and exchangeable sodium percentage (ESP) increased by TWW application, but without salinization and sodification risk. Furthermore, radish showed out of sanitary conditions, indicated by the E. coli and total coliformis contamination, impossible its commercialization and in natura consumption. Considering the obtained results, suggest take appropriate action to improve the TWW treatment efficiency and promote radish sanitary conditions. The obtained results demonstrated the wastewater reuse feasibility as a source of nutrients to radish, substituting or reducing the application of commercial fertilizers and reducing the cost production. / Devido à crescente escassez de fontes hídricas para irrigação, a água de reúso tratada (AR) tem-se tornado cada vez mais interessante por sua composição em nutrientes, viabilidade agronômica e sanitária. Nesse sentido, esta pesquisa avaliou em ambiente protegido a influência da irrigação por gotejamento superficial no estado nutricional e produção do rabanete (Raphanus sativus L.) cv. Crimson Giant submetido a duas fontes de água, assim como as alterações nos atributos químicos do solo e o risco de contaminação sanitária de rabanete e do solo. O experimento foi conduzido no CCA/UFSCar, Araras/SP, adotando-se delineamento inteiramente casualizado, com dois tratamentos: água de abastecimento (AB) e água de reúso tratada (AR). Amostras de solo e rabanete foram submetidas a análises sanitárias. Os resultados permitiram concluir que a AR por gotejamento não comprometeu o estado nutricional, a produção do rabanete e elevou a disponibilidade de macronutrientes. Porém, a razão de adsorção de sódio (RAS) e a percentagem de sódio trocável (PST) do solo se elevaram, embora sem risco de salinização e sodificação. Além disso, o rabanete mostrouse fora dos padrões sanitários, indicados pela contaminação por coliformes totais e E. coli, impossibilitando a comercialização e consumo in natura. Considerando-se os resultados obtidos, sugere-se a adoção de medidas que visem à melhoria da eficiência do tratamento da AR e propicie a qualidade higiênico-sanitária do rabanete. Os resultados demonstraram a viabilidade do efluente, como fonte de nutrientes, substituindo ou diminuindo as adubações com fertilizante e reduzindo os custos de produção.

Made available in DSpace on 2014-06-11T19:30:24Z (GMT). No. of bitstreams: 0 Previous issue date: 2006-02-11Bitstream added on 2014-06-13T19:39:59Z : No. of bitstreams: 1 sa_ro_me_botfca.pdf: 322008 bytes, checksum: ee9da95a6159f5e5fc33c0c3b613a125 (MD5) / Bayer S.A. / O presente trabalho de pesquisa teve como objetivo, avaliar a variabilidade genética de nabo forrageiro cultivar CATI AL 1000 por meio de progênies de meios irmãos, e obter estimativas de parâmetros genéticos para as características: ciclo das plantas, altura das plantas, produtividade de grãos, massa de 1000 grãos, e teor de óleo no grão, sendo conduzido na Fazenda Experimental da UNESP em São Manuel, campus de Botucatu - SP. Foram avaliadas 100 progênies de meios irmãos, distribuídas em Látice triplo 10x10, parcialmente balanceado. Para as características ciclo das plantas, produtividade de grãos, massa de 1000 grãos e teor de óleo no grão, foi detectado diferença significativa para o quadrado médio de progênies, pelo teste F. Para a característica ciclo das plantas, o valor médio e a amplitude de variação das progênies foram, 137 dias, 121 - 158 dias respectivamente. As estimativas dos coeficientes de herdabilidade e ganho de seleção apresentaram os seguintes valores, 45,90 % e 1,09 %. Para característica produtividade de grãos, a média e amplitude de variação de progênies foram, 7,40 g, 0,78 - 18,55 g, (49,40 kg/ha, 5,20 - 123,70 kg/ha) respectivamente. As estimativas dos coeficientes de herdabilidade e ganho de seleção esperado, foram superiores em relação aos encontrados na literatura, comparando-se com populações de milho, para característica produtividade de grão, com valores de 90,70 % e 19,30 % respectivamente. A massa de 1000 grãos apresentou valores para a média e amplitude de variação de progênies de, 7,95 g, 3,35 - 13,51 g, respectivamente. As estimativas dos coeficientes de herdabilidade e ganho de selção apresentaram os seguintes valores, 56,80 % e 4,80 %. Para a característica teor de óleo no grão, a média e amplitude de variação de progênies foram 34,42 %, 26,98 - 41,67 %, respectivamente... / The objective of the present study was to evaluate fodder radish genetic variability, cultivar CATI AL 100, by using half-sib progenies, and to obtain estimates of genetic parameters for the characteristics: plant cycle, plant height, grain yield, mass of 1000 seeds, and seed oil content, being carried out at UNESP Experimental Farm in São Manuel municipal districtal, Botucatu campus (São Paulo State, Brazil). A hundred half-sib progenies were distributed in triple latice scheme 10x10, partially balanced. For the characteristics plant cycle, grain yield, mass of 1000 seeds, and seed oil content, was detected, for the progenies medium square, significant difference, by F test. For the characteristic plant cycle, the average value and progenies range were 137 days and 121 - 158 days, respectively. The estimates of the inheritability coefficients and selection gain presented the following values: 45,90 % e 1,09 %. For grain yield character, the average value and progenies range were 7,40 g, 0,78 - 18,55 g (49,40 kg ha-1, 5,20 - 123,70 kg ha-1) respectively. The estimates of the inheritability coefficients and expected selection gain, were higher than those ones found in literature, being compared with maize populations, for grain yield, with values of 90,70 % and 19,30 % respectively. The mass of 1000 seeds presented values for the average and progenies range of 7,95 g, 3,35 - 13,51 g, respectively. The estimates of inheritability coefficients and selection gain showed the following values: 56,80 % e 4,80 % For the characteristic seed oil content, the average and progenies range were 34,42 %, 26,98 - 41,67 % respectively...(Complete abstract click electronic access below)

Les nématodes à galles demeurent l'un des problèmes les plus graves des ‎agriculteurs de serres du Liban et du Moyen-Orient. Dans le passé, la fumigation du sol au ‎bromure de méthyle a été considérée comme la meilleure mesure de contrôle contre ces ‎nématodes. Toutefois, à la lumière de l'élimination globale du bromure de méthyle, l'accès ‎aux alternatives efficaces et durables est devenu une nécessité essentielle.‎L'objectif de cette étude est d'évaluer l'efficacité des deux engrais verts, le radis ‎huileux (Raphanus sativus oleifera) et à la roquette (Eruca vesicaria sativa) appliquées ‎avec ou sans bâche en plastique, séparément et en combinaison avec Oxamyl, dans la ‎gestion des nématodes à galles en cultures de concombres de serre. En outre, cette étude ‎vise à évaluer la faisabilité financière de la technique de biofumigation avec les deux ‎cultures utilisées et de la rentabilité finale de ces engrais verts en termes de taux coût-profit ‎par rapport au bromure de méthyle.‎A cette fin, trois expériences sur le terrain ont été menées dans des serres ‎commerciales, situées sur la zone côtière du Liban.‎Dans les deux expériences A et B, des résultats cohérents ont été enregistrés en ‎termes de production de rendements significativement plus élevés et de la réduction des ‎populations de nématodes avec les engrais verts‎ utilisés avec ou sans bâche en plastique, ‎par rapport au témoin non traité.‎Quant aux résultats obtenus par les engrais verts‎ par rapport ‎ au bromure de ‎méthyle, dans l'expérience A, le rendement produit par le bromure de méthyle était ‎significativement plus élevé que celui du radis huileux avec bâche en plastique. ‎Cependant, la différence n'était pas significative entre la réduction de la population de ‎nématodes résultant du bromure de méthyle et celle du radis huileux avec bâche en ‎plastique. Les différences du rendement ainsi que la réduction des nématodes étaient ‎significatives entre le bromure de méthyle et le radis huileux sans bâche en plastique.‎Dans l'expérience B, aucune différence significative n'a été observée dans le ‎rendement ni la réduction de la population de nématodes entre aucun des deux engrais ‎verts‎ utilisés avec bâche en plastique et le bromure de méthyle. Ces différences étaient ‎significativement en faveur du bromure de méthyle uniquement lorsque le radis huileux a ‎été utilisé sans bâche en plastique.‎Dans l'expérience C, où Vydate (Oxamyl) a été appliqué à la dose de 1 litre par 1,000 ‎m2 à tous les traitements, il n'y avait pas de différence significative dans le rendement ni la ‎réduction de la population de nématodes entre chacun des deux engrais verts utilisés avec ‎ou sans bâche en plastique et le bromure de méthyle.‎L'analyse coût-profit menée sur tous les traitements appliqués dans les 3 ‎expériences a montré que dans tous les cas, tous les traitements appliqués, qu'ils soient ‎chimiques, non-chimique (avec ou sans bâche en plastique) ou en association ont produit ‎des bénéfices nets supérieurs au bromure de méthyle, même lorsque le rendement produit ‎par le bromure de méthyle était significativement plus élevée.‎L'utilisation du plastique pour couvrir les radis huileux a généralement produit de ‎meilleurs résultats en termes de production de rendements plus élevés, une meilleure ‎réduction des populations de nématodes à galles dans le sol, ainsi conduisant à des ‎augmentations raisonnables des profits nets.‎A la base de ces résultats et à la lumière de l'élimination globale du bromure de ‎méthyle, on peut conclure que l'utilisation du radis huileux et la roquette comme engrais ‎verts avec bâche en plastique peut être considéré comme un outil alternatif pour la gestion ‎des nématodes à galles dans la production de concombres de serre dans les conditions ‎libanaises.‎ / Root-knot nematodes remain one of the most serious problems faced ‎by ‎greenhouse farmers of Lebanon and the Middle East region. In the past, soil fumigation ‎with methyl bromide has been considered as ‎the best control measure against root-knot ‎nematodes. However, in the light of the global phase out of methyl bromide, finding ‎efficient and viable alternatives is an essential necessity.‎The objective of this study is to evaluate the efficacy of the two biofumigation ‎crops ‎Oil Radish (Raphanus sativus oleifera) and Arugula (Eruca vesicaria sativa) applied ‎with ‎and without plastic tarp, separately and in combination with Oxamyl in the ‎management of ‎the root-knot nematodes in greenhouse cucumber crops. Additionally, this ‎study aimed at ‎assessing the financial feasibility of the biofumigation technique with the ‎two cops used ‎and the final profitability of these green manure crops in terms of cost to ‎benefit ratio as ‎compared to methyl bromide.‎For this purpose, three field experiments were carried out in ‎commercial ‎greenhouses situated on the coastal zone of Lebanon.‎In both experiments A & B consistent results were recorded in terms of production ‎of ‎significantly higher yields and reduction of nematode population with the ‎biofumigation ‎crops used whether with or without plastic cover, as compared to untreated ‎fallow.‎As to the results achieved by the biofumigation crops with respect to methyl ‎bromide, ‎in experiment A yield produced by methyl bromide was significantly higher than ‎oil radish ‎with plastic cover. However, no significant difference was found between ‎reduction of ‎nematode population resulting from methyl bromide and oil radish with plastic ‎cover. ‎Difference was significant between methyl bromide and oil radish without plastic ‎cover in ‎both yield and reduction of nematodes.‎In experiment B no significant difference was observed in neither yield nor ‎reduction ‎of nematode population between any of the two biofumigation crops used with ‎plastic ‎cover and methyl bromide. These differences were significantly in favor of methyl ‎bromide ‎only when oil radish was used without plastic cover.‎In experiment C where Vydate (Oxamyl) was incorporated at the rate of 1 liter ‎per ‎‎1,000 m2 to all treatments, there was no significant difference in neither yield nor ‎reduction ‎of nematode population between any of the two biofumigation crops used with or ‎without ‎plastic cover.‎Cost-benefit analysis made on all treatments applied in the 3 experiments ‎showed ‎that in all cases, all treatments applied, whether chemical, non-chemical (with or ‎without ‎plastic cover) or in combination have produced higher net profits than methyl ‎bromide, ‎even when yield produced by methyl bromide was significantly higher.‎Use of plastic for covering oil radish has generally produced ‎better results in terms ‎of ‎production of higher yields, better reduction of soil ‎populations of root-knot nematodes‏‎ ‎and ‎‏leading to ‎‏reasonable increases of net profits.‎Based on these findings and in the light of global phase out of methyl bromide, ‎it ‎can be concluded that the use of oil radish and arugula as biofumigation crops with ‎plastic ‎cover can be considered as ‎an alternative management tool for the root-knot ‎nematode in ‎greenhouse cucumber ‎production under Lebanese conditions.‎