Majority-Vote Model on a Random Lattice

The stationary critical properties of the isotropic majority vote model on random lattices with quenched connectivity disorder are calculated by using Monte Carlo simulations and finite size analysis. The critical exponents $\gamma$ and $\beta$ are found to be different from those of the Ising and majority vote on the square lattice model and the critical noise parameter is found to be $q_{c}=0.117\pm0.005$.Comment: 4 pages, 6 figure

Rendimento da bananeira tipo 'Terra' consorciada com mandioca.

Em regiões com tradição no monocultivo de mandioca e bananeira, especialmente do tipo Terra, pode ocorrer competição por área. Essa situação ocorre ou é afetada, a depender do preço desses produtos no mercado. No caso de mandioca para farinha, o preço é muito influenciado pelas leis de oferta e demanda, e com a tendência atual da redução de seu consumo, é esperado que as áreas com mandiocais sejam substituídas por bananeiras. Alternativamente, pode-se cultivar a mandioca entre fileiras de bananeiras. Na Fazenda Novo Horizonte, a Casa Familiar Rural e a Cooperativa de Produtores Rurais de Presidente Tancredo Neves, Bahia, têm estimulado a consorciação de bananeira cv. Terra (Musa spp., AAB) com a mandioca, considerando a flutuação de preço da mandioca numa região considerada como farinheira.pdf 178

Uso de silício para aumento na nodulação de feijoeiro inoculado com rizóbio.

bitstream/item/69057/1/096-mauricio-uso.pdfPublicado também no Cadernos de Agroecologia, v. 7, n.2, 2012

First report of Lonchaeidae (Diptera) infesting fruits of Byrsonima crassifolia in Brazil.

Murici, Byrsonima crassifolia (L.) Kunth (Malpighiaceae), is native to the Amazon region and several other regions of tropical America. The fruits are small globose drupes with fleshy yellow mesocarp (pulp) and characteristic flavor and aroma. They are consumed fresh as juice, jam, liquor and sweets (León 1968; Donadio et al. 2002; Lorenzi et al. 2006). In addition, fruits of this species have been widely used in the traditional medicine by its antimicrobial and antidepressant properties (Martínez-Vázquez et al. 1999; Herrera-Ruiz et al. 2011). The only record of fruit flies (Diptera) associated to fruits of B. crassifolia in Brazil was published by Pereira et al. (2008) from material collected in the state of Amapá during 2005 and 2006. In their work, a total number of 7,915 fruits (16.02 kg) was collected in 24 sampling points distributed in the municipalities of Macapá, Mazagão and Porto Grande. Three samples were infested by fruit flies of the family Tephritidae (one in Macapá, 0.01 puparia/fruit; two in Mazagão, 0.10 and 0.15 puparia/fruit). Anastrepha striata Schiner, 1868 (10 specimens), A. obliqua (Macquart, 1835) (8 specimens) and A. fraterculus (Wiedemann, 1830) (3 specimens) were recovered in those collections. In other samples of B. crassifolia collected in the Brazilian Amazon (states of Amapá and Rondônia), no fruit flies specimens were obtained (Deus et al. 2009; Pereira et al. 2010; Silva et al. 2011a). In Mexico, the presence of A. serpentina (Wiedemann, 1830) in B. crassifolia was recorded in the state of Chiapas (Aluja et al. 1987). However, the presence of Lonchaeidae (Diptera) species in B. crassifolia was not recorded in either study

Efeito da aplicação de escória de siderurgia granulada em cana-soca junto com a adubação NPK.

FERTBIO 2010