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Previous issue date: 2017-07-04 / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) / O crambe tem se destacado no cenário bioenergético como uma opção na rotação de culturas para a safrinha, visando à produção de óleo e posteriormente de biodiesel. No entanto, pouco se sabe sobre suas necessidades nutricionais. Objetivou-se avaliar a resposta das plantas de crambe ao efeito residual da adubação orgânica com lodo de esgoto (LE) na produtividade agrícola, conteúdo de macro e micronutrientes nos grãos e na planta inteira, além do teor de óleo. O experimento foi instalado em Latossolo Vermelho eutroférrico (LVef), que recebeu 18 aplicações anuais de lodo de esgoto, no município de Jaboticabal-SP. Os tratamentos foram: 0 (controle, sem aplicação de LE e com fertilização mineral); 5 Mg ha-1 LE; 10,0 Mg ha-1 LE; e 20,0 Mg ha-1 LE base seca. O crambe foi semeado em sucessão ao milho, cultura utilizada no ciclo 2014/2015, sem nova adubação. O acúmulo de nutrientes na planta inteira e a massa seca foram analisados em três épocas de amostragem (50, 64 e 78 dias após a semeadura - DAS), além da produtividade, porcentagem de óleo e concentração de nutrientes nos grãos. O acúmulo de N, P, B e Zn na planta inteira e a massa seca de crambe apresentaram diferença significativa entre os tratamentos somente aos 50 DAS, com valores maiores no tratamento de 10 Mg ha-1 quando comparado ao tratamento controle. Para as demais variáveis analisadas, não houve diferença significativa em nenhuma época de coleta. A maior produção de massa seca ocorreu aos 78 DAS, atingindo 23,22 g kg-1 na dose de 20 Mg ha-1 LE. A porcentagem de óleo, que variou de 18,69 a 19,53%, e a produtividade de grãos, também não foram influenciadas pelos tratamentos. O estudo possibilitou verificar que a resposta à adubação com LE ou mineral, não influenciou em incremento no acúmulo dos nutrientes avaliados nas plantas e nos grãos do crambe. A qualidade de grãos de crambe quanto ao teor de óleo e a produtividade também não sofreram interferência das doses de LE utilizadas. Este trabalho mostrou que crambe é uma planta que pode ser aproveita na rotação de culturas adubadas com LE. / Crambe has stood out in the bioenergetic scenario as an option in the rotation of crops for the safrinha, aiming at the production of oil and later of biodiesel. However, little is known about their nutritional needs. The objective of this study was to evaluate the response of crambe plants to the residual effect of organic fertilization with sewage sludge (SS) on agricultural productivity, macro and micronutrient content in grains and whole plant, as well as oil content. The experiment was carried out in Eutroferric Red Latosol (LVef), which received 18 annual applications of sewage sludge, in the municipality of Jaboticabal-SP. The treatments were: 0 (control, without application of SS and with mineral fertilization); 5 Mg ha-1 SS; 10.0 Mg ha-1 SS; and 20.0 Mg ha-1 SS dry basis. The crambe was sown in succession to corn, a crop used in the 2014/2015 cycle, with no new fertilization. The accumulation of nutrients in the whole plant and the dry mass were analyzed in three sampling times (50, 64 and 78 days after sowing - DAS), besides the productivity, percentage of oil and concentration of nutrients in the grains. The accumulation of N, P, B and Zn in the whole plant and the dry mass of crambe showed a significant difference between the treatments only at 50 DAS, with higher values in the treatment of 10 Mg ha-1 when compared to the control treatment. For the other variables analyzed, there was no significant difference in any collection season. The highest dry mass production occurred at 78 DAS, reaching 23.22 g kg-1 at the dose of 20 Mg ha-1 SS. The percentage of oil, which varied from 18.69 to 19.53%, and grain yield, were also not influenced by the treatments. The study made it possible to verify that the response to SS or mineral fertilization did not influence the accumulation of nutrients evaluated in plants and crambe grains. The quality of crambe grains for oil content and yield also did not suffer interference from the doses of SS used. This work showed that crambe is a plant that can be harvested in the rotation of cultures fertilized with SS.
| Identifer | oai:union.ndltd.org:IBICT/oai:repositorio.unesp.br:11449/152186 |
| Date | 04 July 2017 |
| Creators | Carlos, Roberta Souto |
| Contributors | Universidade Estadual Paulista (UNESP), Melo, Wanderley Jose de [UNESP] |
| Publisher | Universidade Estadual Paulista (UNESP) |
| Source Sets | IBICT Brazilian ETDs |
| Language | Portuguese |
| Detected Language | English |
| Type | info:eu-repo/semantics/publishedVersion, info:eu-repo/semantics/masterThesis |
| Source | reponame:Repositório Institucional da UNESP, instname:Universidade Estadual Paulista, instacron:UNESP |
| Rights | info:eu-repo/semantics/openAccess |
| Relation | 600, 600 |
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