Efeitos da carência de alguns nutrientes minerais no desenvolvimento de plantas de soja (Glycine max (L.) Merrill cv Santa Rosa)

The present work studies Ca, B and Zn omission on the development of soybean plants (Glycine max (L.) Merrill cv Santa Rosa). The experiment was carried out as hydroponic culture, with complete Hoagland & Arnon nutrient solution nr. 2 (C), lacking calcium (-Ca), lacking boron (-B) or lacking zinc (-Zn), a total of 4 treatments. Seven samplings were made to determine: total dry matter (g), root dry matter (g), stem dry matter (g) and leaf dry matter (g). Results showed that Ca and B omissions decreased dry weight. Lack of Zn did not affect dry weight.

Effect of Alternaria cassiae, Pseudocercospora nigricans, and soybean (Glycine max) planting density on the biological control of sicklepod (Senna obtusifolia)

The interactions of two fungal biocontrol agents, Alternaria cassiae and Pseudocercospora nigricans, and soybean planting density on sicklepod mortality and dry weight were studied in the field over 2 yr. The experimental field was divided into three equal areas: one without soybean and two where the soybean was sown in densities of 20 and 36 seeds per meter row with a 0.95-m row spacing. The fungi were sprayed alone or in a mixture at three growth stages of sicklepod plants grown at three levels of crop interference resulting from the three soybean planting densities. The fungal treatments were: an untreated control, A. cassiae (105 spores/m2), P. nigricans (3.3 g mycelium/m2), and the mixture of these two fungi. Sicklepod was at the cotyledonary leaf, two-leaf, and four-leaf stages when treated. Alternaria cassiae was most effective in reducing both sicklepod survival and dry weight. The mixture of P. nigricans and A. cassiae was generally comparable to but not better than A. cassiae alone in killing the weed (mortality) and reducing its growth (dry weight). Soybean density did not have significant effects on the mortality or the dry weight of sicklepod. Thus, there is no advantage to combining the highly effective biocontrol agent A. cassiae with the less effective P. nigricans or with soybean interference to control sicklepod. However, the results validate the efficacy of A. cassiae by itself as a bioherbicide.

Influência do fotoperíodo no crescimento e sobrevivência de póslarvas de piracanjuba Brycon orbignyanus (Valenciennes, 1849) (Osteichthyes, Characidae)

This paper aims at studying the influence of photoperiod on the cultivation of Brycon orbignyanus (Valenciennes, 1849) (Osteichthyes, Characidae) post-larvae submitted to four treatments: 0L-24D (L=Light; D=Dark), 10 - L14D, 14L - 10D and 24L-0D, with 3 repetitions. Post-larvae measuring 7.8±0.7mm and weighting 3.5±0.8mg were distributed in 12 aquariums (10L), stocked with 12 post-larvae per aquarium. Fishes were fed daily with Artemia sp. nanplii, in 10 days experiment. A positive relationship between the survival rate (88.9±9.7%) observed in the treatment with 24 hours of luminosity, and the lowest (58.3±8.3%), in the treatment with 24 hours of darkness. No difference was showed (P>0.05) in the mean length and weight of the post-larvae, although there was greater heterogeneity among the post-larvae cultivated at the longer darkness period.

Salmonella enteritidis in the eggs of Japanese quails (coturnix coturnix Japonica - Temminck & Schlegel, 1849) fed diets with different calcium and phosphorus levels

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Equidad intergeneracional en el Brasil: transferencias de seguridad social y educación pública entre generaciones nacidas en el período 1923-2000

Incluye Bibliografía

Ciclo reprodutivo da tabarana, Salminus hilarii (Valenciennes, 1849) (Characidae, Salmininae) na região do baixo rio Sorocaba, SP

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Ácaros associados a plantas da região Core do Cerrado e sua influência na acarofauna em cultivos de soja (Glycine max (L.) Merril) (Fabaceae)

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

Estudo experimental do efeito da proteína glicinina da soja (Glycine max L.) no metabolismo do colesterol

Pós-graduação em Alimentos e Nutrição - FCFAR

Revista da escola normal de São Carlos (1916-1923): um estudo sobre idéias e práticas educacionais

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Desempenho agronômico de cultivares de soja (Glycine max (L.) Merril) em sistemas de preparo do solo

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Demanda energética de sistemas de manejo do solo na cultura da soja (Glycine max L.)

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Estudo de lipoxigenases em extrato hidrossolúvel de soja (Glycine max (L.) Merr.) submetido a diferentes tratamentos

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Avaliação microbiológica e sensorial do guacamole conservado pelo frio: Juliana Wagner Simon. -

Pós-graduação em Agronomia (Energia na Agricultura) - FCA

Ação citoprotetora do óxido nítrico na germinação de arroz (Oryza sativa L.) e soja (Glycine max (L.)Merril)submetidas a estresse de alumínio

Pós-graduação em Ciências Biológicas (Botânica) - IBB