Pulp fruit added to culture medium for in vitro orchid development

As an additive in in vitro culture media, fruits have a great potential for facilitating economical orchid production because of lower technology requirements and the ease of obtaining raw materials to formulate culture media. We studied the in vitro growth of Cattleya bicolor Lindl. grown in a simplified culture medium supplemented with different kinds of fruit pulp. The experimental design was completely randomised, with eight seedlings per replication and ten replications per treatment, for a total of 80 seedlings per treatment. The culture medium was made using 150 g L -1 of pulp (without peel or seed) from the following fruits: ripe Santa Cruz tomatoes (Solanum lycopersicum L.), dwarf bananas (Musa cavendishii L.) of intermediate ripeness, light green chayote (Sechium edule (Jacq.) Sw), ripe papaya (Carica papaya L.) or green coconut (Cocos nucifera L.).The treatment control was MS 50 %. The treatments and the control were kept in a growth chamber for seven months before evaluating seedling survival percentage, shoot height, number of leaves, rooting percentage, root number, root length and dry masses of shoot and roots. The highest percentages of seedling survival were obtained using MS 50 %, banana and coconut medium. The seedling survival and rooting percentages illustrate that it is possible to emphasise the culture medium MS 50% and the culture medium supplemented with coconut on the most traditional culture medium with banana or tomato pulp. For the in vitro development of Cattleya bicolor Lindl., a simplified culture medium supplemented with coconut pulp is the most suitable for use as an alternative to MS 50%. A simplified culture medium supplemented with papaya pulp is not recommended for the in vitro development of Cattleya bicolor Lindl.

Avaliação de híbridos de mamona de porte baixo em espaçamento reduzido em condições de safrinha

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Avaliação da seleção para aumento de porcentagem de flores pistiladas em mamona (Ricinus communis L.)

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Espaçamento entre fileiras e população de plantas para cultivares de mamona de porte baixo na safra de verão e safrinha

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

Distribuição espacial e amostragem sequencial de Cosmopolites sordidus (Germar) na cultura da bananeira

Pós-graduação em Agronomia (Produção Vegetal) - FCAV

Potencial do composto flintisa anão de milho para melhoramento em condições de espaçamento reduzido e na safrinha

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Potencial do composto flintisa anão de milho para melhoramento em condições de alta densidade populacional

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Seleção para aumento da porcentagem de flores femininas na população FCA-UNESP-PB de mamona (Ricinus communis L.)

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Eficiência da utilização de adubos verdes em pomar de laranjeira 'Pêra' (Citrus sinensis (L.) Osbeck)

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Cacaueiro: propagação por estacas caulinares e plantio no semi-árido do Estado da Bahia

Pós-graduação em Agronomia (Produção Vegetal) - FCAV

Caracterizações biométrica, química e sensorial de frutos de coqueiro variedade anã verde

Pós-graduação em Agronomia (Produção Vegetal) - FCAV

Cultivo do cajueiro anão (Anacardium occidentale L.) nas regionais de Andradina e Jales do estado de São Paulo: tratos culturais, custos e mercados

Pós-graduação em Agronomia - FEIS

Bioecologia comparada de duas espécies de Cyphomyrmex Mayr (Formicidae: Myrmicinae)

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Effects of the Eccentricity of a Perturbing Third Body on the Orbital Correction Maneuvers of a Spacecraft

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Applying boron to coconut palm plants: effects on the soil, on the plant nutritional status and on productivity boron to coconut palm trees

Boron, one of the micronutrients frequently found in low levels in tropical soils affects nutrition and productivity of coconut palm trees essentially cultivated in tropical climates. The objective of this research study was to evaluate the effect of boron on the nutritional status of the plant and its productivity when artificially applied to the culture soil. The experiment was carried out in a four year old, artificially irrigated, dwarf coconut palm orchard in Brazil, between January, 2005 and October, 2006. The soil was a red yellow Latosol (B: 0.18 mg dm(-3)). The treatments consisted in the application of five boron dosages: zero, 1, 2, 4, and 6 kg ha(-1). In the field, the treatments were arranged according to a completely randomized block design, with four replications. Boron (borax) dosages were applied in equal halves directly into the soil in the months of January and February of 2005. Boron concentration in the soil and plant and plant productivity were evaluated. The higher palm tree production was associated to levels of 0.6mg dm(-3) of B in the soil and 23.5mg kg(-1) in leaves. Ninety five percent of palm trees maximum production was obtained with the use of a boron dosage of 2,1kg ha(-1).