Air-assistance and low volume application to control of asian rust on soybean crop

Currently, one of factors that cause the production cost increase of soybean crop is the pesticide application. The most important disease in soybean crop is Asian rust, caused by Phakopsora pachyrhizi Sydon & P. Sydon fungus, which can cause significant loss of the production. Therefore, this work aimed at evaluation of different spraying techniques on the spray deposits and some parameters of soybean crop: grain size, weight of 1 000 seeds and the crop productivity. Two experiments were carried out in the experimental area of FCA/UNESP (Faculdade de Ciencias Agronomicas/Universidade Estadual Paulista Julio de Mesquita Filho) - Botucatu, S P, Brazil, in soybean crop, Conquista variety, in the 2007/2008 season. In the first experiment, three air levels (0, 9 and 29 km/h of the air speed generated by fan) with flat fan nozzle XR 8002 with a spray volume of 130 l/ha were compared with a rotating nozzle - using low volume oily - LVO at 40 l/ha of spray volume. The second experiment was carried out under the same conditions as the previous experiment, including a control treatment (untreated plants). The disease severity was evaluated using a diagrammatic scale with a visual evaluation of the disease on 15 leaves of each plot. The grades varied between 0.6 and 78.5% of the disease severity. The use of air assistance when compared with the rotating system nozzle did not show significant differences for spray deposits on adaxial and abaxial surface of the leaves in bottom part of the plant. The air assistance with maximum air speed (29 km/h) increased the productivity with respect of the other treatments.

Structural changes in soybean seed coat due to harvest time and storage

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

Effect of reduced fungicide doses on control of soybean Asian rust and bean yield

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Aspectos fisiológicos e bioquímicos de cultivares de soja submetidos a déficit hídrico induzido por peg 6000

In soybean culture water deficit is one of the most limiting factors to the maximum yield obtained. Genotypes identification with drought tolerance capacity is fundamental to solve this problem. The objective in this paper was analyze the physiological quality and physiological and biochemical responses of soybeans cultivars (MG/BR 46 Conquista, UFUS Carajás, UFUS Impacta, UFUS Riqueza and UFUS Xavante) submitted to water stress with PEG 6000 solutions in different levels of osmotic potentials (0; -0,1; -0,2; -0,3 and -0,4 MPa). Physiological quality of cultivars were evaluated by seedling length test and fresh and dry biomass. The biochemical responses were evaluated by detection of indol-acetic acid (IAA), by saccharose content and seedling water transportation. UFUS Riqueza presented the best performance in physiological quality tests, saccharose content, absorption and water absorption velocity in seedling. UFUS Xavante showed the highest IAA's concentration and the greater weight of seedling in water transportation test.

A saúde e seu direito no olhar do usuário sob a luz da constituição de 1988

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Dessecação com Glyphosate em pré-colheita e qualidade fisiológica de sementes de soja

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Assistência de ar e aplicação em volume baixo no controle da ferrugem asiática da soja (Phakopsora pachyrhizi Sydon & Sydon

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Absorção e acúmulo de manganês em soja RR sob efeito do glyphosate

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

Arte e formação de educadores: metodologia para compreender e dizer

Pós-graduação em Artes - IA

O pensamento de Che Guevara: um homem novo, trabalho e consciência na Revolução Cubana

Pós-graduação em Ciências Sociais - FFC

Caso Rushdie: uma análise da relação entre islamismo e direitos humanos

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

A hegemonia do agronegócio e o sentido da reforma agrária para as mulheres da Via Campesina

Pós-graduação em Ciências Sociais - FCLAR

Anti-racismo em Marília: trajetórias e perspectivas de luta do movimento negro atual

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

A questão democrática no contexto da crise orgânica do partido comunista brasileiro (PCB): 1979-1987

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Concepção e papel da política em Karl Marx: uma perspectiva possível do Manifesto do Partido Comunista à Comuna de Paris

Pós-graduação em Ciências Sociais - FFC