Benefícios da adubação verde sobre a simbiose micorrízica e a produtividade de batata-doce.

Plantio das leguminosas e da batata doce. Produtividade da batata doce e simbiose micorrízica.bitstream/CNPAB-2010/27139/1/cot014.pd

Risks to pollinators and pollination from invasive alien species

Invasive alien species modify pollinator biodiversity and the services they provide that underpin ecosystem function and human well-being. Building on the Intergovernmental Science-Policy Platform for Biodiversity and Ecosystem Services (IPBES) global assessment of pollinators and pollination, we synthesize current understanding of invasive alien impacts on pollinators and pollination. Invasive alien species create risks and opportunities for pollinator nutrition, re-organize species interactions to affect native pollination and community stability, and spread and select for virulent diseases. Risks are complex but substantial, and depend greatly on the ecological function and evolutionary history of both the invader and the recipient ecosystem. We highlight evolutionary implications for pollination from invasive alien species, and identify future research directions, key messages and options for decision-making

Adubação verde: Estratégia para uma agricultura sustentável.

Efeitos da adubação verde nas características do solo. Efeitos químicos. Efeitos físicos. Efeitos biológicos. Fixação biológica de nitrogênio. Decomposição dos resíduos vegetais. Comportamento ecofisiologico dos adubos verdes. Condições edáficas. Seleção de leguminosas para a adubação verde. Formas de utilização dos adubos verdes.bitstream/CNPAB-2010/27233/1/doc042.pd

Estratégias para utilização de leguminosas para adubação verde em unidades de produção agroecológica.

Efeitos da adubação verde nos agroecossistemas. Escolha de leguminosas para a adubação verde. Leguminosas adaptadas às baixadas úmidas. Leguminosas adaptadas às condições de frio. Leguminosas adaptadas às condições de reduzida umidade do solo. Leguminosas adaptadas às condições de baixa fertilidade do solo. Formas de utilização dos adubos verdes. Cultivo prévio da leguminosa anual, seguido do plantio da cultura econômica anual. Consórcio de leguminosa anual ou perene com a cultura econômica anual. Consórcio de leguminosa perene com a cultura econômica perene. Cultivo em faixas intercalares de leguminosas semi-perene ou arbórea com cultura econômica anual ou perene.bitstream/CNPAB-2010/32095/1/doc174.pd

Desempenho agronômico de Crotalaria juncea em diferentes arranjos populacionais e épocas do ano.

bitstream/CNPAB-2010/33519/1/cot082.pd

Rendimento agronômico de consórcios entre pimentão e feijão-vagem arbustivo em sistema orgânico de cultivo.

bitstream/CNPAB-2010/34643/1/cot106.pdfParcerias: UFRRJ

Comparative Phylogeography in a Specific and Obligate Pollination Antagonism

In specific and obligate interactions the nature and abundance of a given species can have important effects on the survival and population dynamics of associated organisms. In a phylogeographic framework, we therefore expect that the fates of organisms interacting specifically are also tightly interrelated. Here we investigate such a scenario by analyzing the genetic structures of species interacting in an obligate plant-insect pollination lure-and-trap antagonism, involving Arum maculatum (Araceae) and its specific psychodid (Diptera) visitors Psychoda phalaenoides and Psycha grisescens. Because the interaction is asymmetric (i.e., only the plant depends on the insect), we expect the genetic structure of the plant to be related with the historical pollinator availability, yielding incongruent phylogeographic patterns between the interacting organisms

Avaliação de leguminosas para cobertura do solo.

bitstream/CNPAB-2010/27249/1/doc055.pd

Structural and Spectroscopic Properties of Two New Isostructural Complexes of Lapacholate with Cobalt and Copper

The molecular structures of two isostructural complexes of lapacholate (Lap) anion and dimethylformamide (DMF), M(Lap)2(DMF)2 with M: Co Cu, were determined by X-ray diffraction methods. The substances crystallize in the triclinic space group P1 with one molecule per unit cell and cell constants a = 7.7591(3), b = 10.3560(3), c = 11.2224(4) A, α = 95.110(2), β = 94.310(2), and γ = 107.704(2)◦ for the Co complex and a = 7.9308(2), b = 10.0033(4), c = 10.7508(4), α = 97.387(2), β = 93.621(2), and γ = 103.980(2)◦ for the Cu complex. The structures were solved from 2933 (Co) and 2888 (Cu) reflections with I > 2σ (I) and refined by full matrix least squares to agreement R1-factors of 0.041 (Co) and 0.033 (Cu). The metal M(II) ion is sited on a crystallographic inversion center in a MO6 distorted octahedral environment. This ion is coordinated equatorially to two lapacholate anions through their adjacent carbonyl and phenol oxygen atoms [M–O bond distances of 2.134(1) and 2.008(1) A˚ (Co) and 2.301(1) and 1.914(1) A (Cu)] and axially to two DMF molecules through oxygen atoms [M–O bond lengths of 2.143(1) ˚ A (Co) and 2.069(1) ˚ A (Cu)]. The solid state IR transmittance and solution electronic absorption spectra of both Co and Cu ˚ compounds are also reported and compared to each other and to the corresponding spectra of other members of the lapacholate metal family of complexes.Instituto de Física La Plat