produção de mudas de maracujazeiro amarelo submetidas à salinidade em solo com biofertilizante bovino

The experiment was conducted in a greenhouse from May 1 to July 31, 2008, in Areia county, Paraiba State, PB, Brazil, in order to evaluate the effects of irrigation water salinity on initial growth of the passionfruit seedlings in non-saline substrate with and without bovine biofertilizer. The treatments were distributed in a completely randomized design, with three replications and twelve plants per plots, in a factorial arrangement 5 × 2 × 2, corresponding the former to the levels of salinity in the irrigation water: 0.5; 1.0; 2.0; 3.0 and 4.0 dS m-1, in soils with and without bovine biofertilizer applied at two moments (25 and 65 days after seedling emergence). The growth of the seedlings and the soil electrical conductivity were evaluated at the end of the experiment. The biofertilizer was diluted in a low saline water at a 1:1 ratio and was applied once two days before sowing, corresponding to 10% of the substrates volume. The increase in water salinity inhibited the growth in height of plants, leaf area and root length, but always to a lesser extent in the treatments with bovine biofertilizer. The increase in electrical conductivity of the irrigation water elevated the soil salinity, independently of the addition of biofertilizer.

Estratégias para produção de mudas de tomateiro utilizando paclobutrazol

The modern tomato production, either for fruit table production or for processing, has required quality seedlings, able to withstand environmental adversities after planting and maintaining the standard genotype productive. The aim of this study was to evaluate the effect of three concentrations of PBZ (0, 50 and 100 mg L-1) and two methods of application (seed treatment and watering seedlings) on seedling emergence and seedling production of tomato growth indeterminate. We adopted a completely randomized in a 2x3 factorial scheme with four replications. We evaluated the seedling emergence, the rate of speed of emergence, seedling height and diameter of hypocotyl and their absolute growth rate (TCA), leaf area, dry weight of shoots, roots and total, and reason leaf area (RAF). Results were subjected to analysis of variance and the mean levels of the factor methods of application compared by Tukey test at 5% and the mean levels of the factor concentrations subjected to regression analysis. The application of paclobutrazol via seedlings watering did not affect seedling emergence, significantly reduced the rate of seedling growth and, consequently, the size of the seedlings without affecting the diameter of hypocotyl, plus allow accumulation of dry roots. A concentration of 50 mg L-1 was shown to be sufficient to obtain seedlings more compact, subject to leaf area, the application via watering, beyond allowing an increase of about 37% in dry weight of roots.

Utilização de composto de lixo urbano na produção de mudas de espécies arbóreas nativas com dois níveis de irrigação

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Influência do uso de telas de sombreamento coloridas (azul, vermelha e preta) na fisiologia da produção de mudas de Guanandi (Calophyllum brasiliensis)

Pós-graduação em Ciências Biológicas (Botânica) - IBB

Fornecimento de cobre na produção de mudas cítricas em diferentes substratos

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Sistemas de produção de mudas cítricas em viveiros protegidos no Estado de São Paulo

Pós-graduação em Agronomia (Horticultura) - FCA

Utilização de água residuária do processo pós-colheita do café na produção de mudas de cafeeiro

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Cobre via foliar na nutrição e na produção de mudas de cafeeiro

The objective of this study was to evaluate the effect of different sources and doses of copper (Cu) applied to leaves on growth and nutrition of coffee seedlings. The treatments consisted of combinations of two Cu sources (Cupric Sulfate Ammonium - CSA and Copper Sulfate - CS) and four Cu doses (0, 250, 500 and 1000 g ha-1). The sources of Cu in different doses were dissolved in water, calculated for the application volume of 400 L ha-1. The doses were divided in 3 applications at 20 days. The Cu content and concentration in the leaf, stem, and root in were measured. The dry matter of the leaf, stem, root and total and the utilization, absorption and translocation efficiency, in coffee seedlings were evaluated. In general the Cu content and concentration were obtained for the CS at doses of 250, 500 and 1000 g ha-1 Cu. The maximum increase of total dry matter was 48 and 51 g to CSA and CS, when applied 534 and 668 g ha-1, respectively. The highest utilization and absorption efficiency was found to CSA and CS, respectively. The translocation efficiency was similar for both sources.

Produção de mudas de Dypsis decaryi (Jum.) Beentje & J. Dransf: efeito de tratamentos pré-germinativos e de substratos

Pós-graduação em Agronomia - FEIS

Produção de mudas nativas sob diferentes manejos hídricos

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Comparação dos sistemas de fertirrigação e hidroponia na produção de mudas de Cariniana estrellensis (Raddi) Kuntze

Pós-graduação em Ciência Florestal - FCA

Dinâmica da colonização natural em encostas degradadas da Serra do Mar, ecofisiologia e produção de mudas das espécies, como subsídio à recuperação florestal

Pós-graduação em Ciências Biológicas (Biologia Vegetal) - IBRC

Manejo da irrigação em diferentes substratos na produção de mudas de laranja

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Propagação vegetativa e produção de mudas de Bauhinia spp

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Uso de paclobutrazol na produção de mudas, no crescimento, produção e qualidade de frutos de tomateiro em ambiente protegido

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)