Comparação do custo de produção do crambe (Cambe abyssinica Hochst) com outras culturas oleaginosas em sistema de plantio direto

Biodiesel is a reality in Brazil, due to the National Program of Biodiesel Production and Use (PNPB), which became mandatory in 2008 in adding 2% biodiesel in all diesel sold in a blend known as B2. The agribusiness sector responded to the federal program, facing many difficulties in biodiesel production, which highlights the supply of raw material. Problems related to biodiesel production were mainly the shortage of vegetable oil, because of demand from domestic and foreign markets, and rising prices of raw materials available for production, making this biofuel production economically feasible, even in Brazil, where agricultural production costs are among the most competitive in the world. The crambe is a specie that has aroused the interest of Brazilian producers due to oil content, hardiness, and mechanized cultivation, mainly for being a winter crop, it becomes one more option for farmers in this period. In addition, you can compose systems of crop rotation as well as being used as ground cover in winter. The aim of this study was to evaluate the potential for productive and cost of production of crambe, conducted in no-tillage system, to compare these parameters with other oil crops such as sunflower, canola and soybean. The trial was conducted in the agricultural year 2008 at the Experimental Farm Lageado belonging to the Faculty of Agronomic Sciences - UNESP, located in Botucatu - SP. The estimated yield was 1.507,05 kg ha-1, resulting in a production of 561,94 liters of oil per hectare. The cost of installation and conduct of crambe per hectare was R$ 875,87, resulting in a cost of R$ 1,56 per liter of oil, the lowest cost among the oilseed crops analyzed.

Remoção pela chuva de diferentes formulações de flutriafol aplicada em soja, com e sem a adição de óleo mineral na calda

The present study had as objectives to verify the effect of rainfastness of different flutriafol formulations, in laboratory conditions, applied on soybean plants with and without the oil adjuvant in the spray solution, as well as to verify the influence of the oil on the droplet spectrum. The experiment considered ten spray solutions related to five treatments containing flutriafol (four formulations of flutriafol and a flutriafol mixture with tebuconazole), all applied with and without mineral oil. Particles size analysis were based on the determination of the droplet spectrum, medium volumetric diameter and the amount of droplets below 100 μm. All the solutions were sprayed with Teejet XR 11001 (fine droplets). Droplet spectrum was determined in a direct way by diffraction of laser (Malvern Mastersizer S®, version 2.15). Confidence interval at 90% degree was used to compare the mean data. The results showed that the addition of mineral oil in the solutions provided tendencies of larger medium volumetric diameter, smaller amount of droplets below than 100 µm and better uniformity of the droplet spectrum. All of the solutions with the addition of mineral oil presented larger adhesion and/or absorption of the fungicide on the plants in comparison with the solutions without oil. The increase of the time between the application and the rain, caused reduction of the fungicide removal, independently of the rain intensity. The increase of the amount of rain didn't change the relative behavior among the solutions; however, this larger amount of rain caused larger fungicide removal along the time. It was observed significant removal of flutriafol by the rain up to 48 hours after the spray application.

Características Físico-Químicas, energéticas e desempenho da fibra de coco na sorção de óleo diesel e biodiesel

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Crescimento e produtividade do girassol na segunda aplicação de lodo de esgoto em diferentes manejos

Sewage sludge, as a soil fertilizer for crop production, has become a very important agricultural input since it is rich in nutrients, adds carbon to the soil and improves its chemical, physical, and biological characteristics. The aim of this study was to evaluate the effects of sewage sludge applied as a fertilizer for two consecutive years on sunflower plant growth and productivity. The experiment was conducted at the Experimental Farm of the College of Agriculture, a unit of the São Paulo State University (UNESP), in São Manuel, state of São Paulo, Brazil. The soil where the experiment was set is a Red Oxissol. The experiment consisted of 6 treatments with 5 replications. The experimental units were distributed in the field according to a randomized complete block design. ‘HELIO 251’ was the sunflower cultivar used in the experiment. The treatments were as follows: T0: check (no nitrogen applied); T1: conventional chemical fertilization; T2: 50% of the N dose from sewage sludge and 50% from a chemical fertilizer in side dress application; T3: 100% of the N dose from sewage sludge; T4: 150% of the N dose from sewage sludge; T5: 200% of the N dose from sewage sludge. The 150% of the N dose from sewage sludge treatment caused the plants to increase in height, in stem diameter, and in number of leaves per plant. The mixture in equal proportion of sewage sludge and a chemical fertilizer (treatment T2) resulted in an achene yield higher than that of the chemical fertilizer alone (treatment T1).

Avaliação da capacidade de renovação do epitélio do mesêntero e seus efeitos no potencial reprodutivo de fêmeas adultas de Ceraeochrysa claveri (Neuroptera: Chrysopidae) alimentadas durante a fase larval com óleo de nim (azadirachta indica A. JUSS)

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Produtividade e perfil químico de óleo essencial de acessos de Varronia curassavica Jacq. em diferentes horários de coleta e período sazonal

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Estudo da combustão do óleo pirolítico de pneus

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Efeito da associação de antimicrobiano e óleo essencial na atividade antimicrobiana e propriedades físico-químicas de cimentos endodônticos

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Avaliação de contaminação com óleo diesel por meio dos métodos de Eletrorresistividade e Polarização Induzida em Santa Ernestina-SP

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Produção de oócitos e embriões bubalinos: efeitos da época do ano e da adição de óleo essencial de Lippia origanoides na maturação in vitro

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Atividade antibacteriana de óleo essencial de orégano (Origanum vulgare): ações in vitro e in situ para preservação de alimento

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Estudo do pH e atividade antimicrobiana sobre Enterococcus faecalis de medicação intracanal à base de hidróxido de cálcio associada ao óleo de melaleuca, clorexidina ou farnesol

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Avaliação de propriedades físico-químicas e antimicrobianas sobre Enterococcus faecalis do mineral trióxido agregado associado a óleo de melaleuca ou farnesol

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Resistência de genótipos de palma de óleo (Elaeis guineensis Jacq.) ao ataque de Opsiphanes invirae Hübner, 1808 (lepidoptera: nymphalidae) no Estado do Pará

Pós-graduação em Agronomia (Entomologia Agrícola) - FCAV