Made available in DSpace on 2016-12-23T14:37:42Z (GMT). No. of bitstreams: 1 Carlos Lacy Santos.pdf: 610209 bytes, checksum: 3345388b917bb47a5a2901cd23eb9383 (MD5) Previous issue date: 2010-12-17 / Este trabalho objetivou avaliar o uso de diferentes materiais corretivos de acidez do solo no desenvolvimento inicial e nutrição mineral da mamona em condição de casa de vegetação. O experimento foi montado num esquema fatorial 2x6, sendo dois Latossolos (LVA I e LVA II), e cinco materiais corretivos de acidez do solo (calcário, resíduo de mármore, escória de metalurgia, produto proveniente de algas marinhas, resíduo de rocha (50% mármore + 50% granito), e testemunha (sem aplicação de corretivo), num delineamento em blocos casualizados com quatro repetições. A mamoneira (cultivar IAC-80) foi cultivada por 45 dias em casa de vegetação, com duas plantas de mamona por vaso. Ao final do período procedeu-se a quantificação da matéria seca da parte aérea (folha e caule), matéria seca da raiz e volume de raízes e determinaram-se os teores e acúmulos de P, K, Ca e Mg na folha e no caule. Os dados foram submetidos à análise de variância e quando significativos foi utilizado o teste de F a 5 % de probabilidade para comparação das médias dos resultados através de contrastes. Os resultados mostraram que houve comportamento diferenciado dos materiais corretivos de acidez e dos solos sobre o desenvolvimento inicial e a nutrição mineral da mamoneira. Para ambos os solos, de maneira geral, o uso de materiais corretivos proporcionou maior desenvolvimento inicial da mamoneira em relação à testemunha (sem aplicação de corretivo), evidenciando a importância da correção da acidez do solo para a cultura. A aplicação de materiais corretivos da acidez promoveu uma redução dos teores de P, K na parte aérea da mamoneira, dado o efeito de diluição, pela maior produção de matéria seca. A aplicação dos materiais corretivos permitiu a elevação dos teores Ca e Mg na parte aérea da mamoneira em relação à testemunha, somente no solo LVA II, o qual apresentava, originalmente, menor disponibilidade destes nutrientes em relação ao LVA I (Tabela 1). De maneira geral, os maiores valores de acúmulo dos nutrientes ocorreram nos tratamentos que proporcionaram maior produção de matéria seca, com destaque para os corretivos resíduo de mármore e resíduo de mármore (50%) + resíduo de granito (50%) que promoveram maior acúmulo de K, Ca e Mg tanto na folha quanto no caule da mamoneira, no LVA II. A utilização de materiais corretivos em solos ácidos cultivados com mamoneira demonstrou potencial no desenvolvimento inicial e na nutrição mineral desta cultura nas condições avaliadas / This study aimed to evaluate the use of different correctives materials of Soil acidity in the initial development and mineral nutrition in castor bean crops greenhouse condition. The experiment was a factorial scheme of 2x6, two soils Oxisols (LVA I and II), and five of corrective materials of soil acidity (limestone, marble waste, metallurgy slag, product from seaweed, waste rock (50% + 50% marble granite), and control (without application of lime) in a randomized block design with four repetitions. The Castor tree (IAC-80), cultivated for 45 days in a greenhouse, two plants of castor bean by vessel. At this time we proceeded to quantify the dry matter of the shoot (leaf and stem), root dry matter and root volume and measured the contents and accumulation of P, K, Ca and Mg in leaves and stem. Data were subjected to analysis of variance and significant when we used the F test at 5% probability to compare the average of results through contrasts. The results showed different behaviors of the materials for acidity of soil on the mineral nutrition and initial development of castor bean. For both soils, in general, the use of corrective materials provided greater initial development of castor bean in relation to control (without application of corrective), highlighting the importance of acidity in the soil for this culture. The application of corrective materials promoted a reduction of acidity of P, K in the shoot of castor beans, given the dilution effect, by the higher dry matter production. The application of corrective materials allowed high levels of Ca and Mg in shoots of castor bean in relation the control, only the soil LVA II, which originally presented lower nutrient availability in relation to the LVA I (Table 1). In Generally, the higher accumulation of nutrients occurred in the treatments that showed higher dry matter production, especially the Marble and lime residue, marble residue (50%) + granite waste (50%) that promoted a higher accumulation of K, Ca and Mg in both the leaf and the stem of the castor bean, the LVA II. The use of corrective materials in acid soils cultivated with castor bean showed a potential in the initial developent and mineral nutrition of this crop under the conditions evaluated

La chimie des résines est née en France à Bordeaux au début du XXe siècle. Son émergence est inextricablement liée à la création de l’Institut du Pin. Cet établissement est une entité complexe dont les origines remontent à 1900, moment où Maurice Vèzes, professeur de chimie, établit à Bordeaux le Laboratoire de chimie appliquée à l’industrie des résines afin d’aider l’industrie locale à résoudre une crise sociale et économique. La place des produits résineux sur le marché est menacée à l’époque par l’émergence de l’industrie pétrolière. Sous la direction des grandes figures de la chimie française Georges Dupont et Georges Brus, l’Institut du Pin contribue à la valorisation de la résine de pin. Non seulement il développe de nouveaux débouchés, mais il s’implique dans la normalisation de dérivés résineux en France et à l’international. Les travaux de l’Institut suscitent aussi l’intérêt outre-Atlantique. L’industrie américaine des résines profite amplement de l’expertise française et essaie d’établir ses propres institutions scientifiques à l’image de celles en France. L’Institut du Pin devient le véritable centre mondial de la chimie des résines et remplit ce rôle jusqu’au déclin de l’industrie régionale à la fin des années 1960. / Pine resin chemistry was born in France in the beginning of the 20th century. Its birth is intimately linked to the establishment of the Pine Institute. It was a complex entity whose origins go back to 1900 when Maurice Vèzes, professor of chemistry at the Faculty of Sciences in Bordeaux, created the Laboratory of Chemistry Applied to the Resin Industry in order to help the regional resin industry to fight the social and economic crisis. The market position of resinous products was threatened by the rise of the petroleum industry offering low quality but cheap alternatives. Under the direction of great French chemists, Georges Dupont and Georges Brus, the Pine Institute helped the resin producers to face the threat of petroleum. Not only it elaborated new products but it actively contributed to the development of national and international standards on resin. The Institute’s works aroused interest also in the United States of America. The American resin industry greatly profited from the French expertise and it tried to establish its own scientific institutions following the French example. The Pine Institute became the global centre of resin chemistry and it fulfilled this role until the decline of the regional industry in the end of the 1960s.