RESUMOA mini-ixora (Ixora coccinea Compacta ) é uma espécie muito apreciada para uso em paisagismo, especialmente em jardins tropicais. A propagação é feita por estaquia, no entanto, a porcentagem de enraizamento é bastante baixa. Sendo assim, objetivou-se com este trabalho avaliar substratos e ambientes para o enraizamento da mini-ixora. Foram utilizadas estacas apicais com comprimento de 10 cm, as quais foram cultivadas em dois tipos de substratos: areia e o produto comercial Plantmax ® . Utilizaram-se também três ambientes de enraizamento: câmara úmida, estufa e enraizador tradicional (telado com 50% de sombreamento). O delineamento experimental utilizado foi o de parcelas subdivididas, sendo três ambientes nas parcelas e dois substratos nas subparcelas. Utilizaramse 5 repetições e 10 estacas por parcela. Analisando-se todos os resultados 100 dias após a implantação do experimento, observouse que a areia proporcionou maior porcentagem de enraizamento (68%) quando comparada ao Plantmax (48%). A câmara úmida também foi o ambiente que proporcionou melhores condições para a propagação da mini-ixora com maior porcentagem de enraizamento, 98%, em relação a estufa (66%) e ao enraizador tradicional (10%). A areia e a câmara úmida também favoreceram a formação de raízes de melhor qualidade. Concluiu-se que o melhor substrato para propagação da mini-ixora foi areia devendo as estacas serem dispostas em câmara úmida. Termos para indexação:Propagação, planta ornamental, estacas apicais, mini-ixora. ABSTRACTThe mini-ixora (Ixora coccinea Compacta ) is a species highly appreciated for use in tropical gardens. Its propagation is made by cutting, however, its rooting percentage is very low so, the aim of this work was to evaluate substrates and environments for the mini-ixora rooting. Apical cuttings with 10 cm of length were used in two substrates: sand and Plantmax ® . Three rooting environments were used: wet chamber, greenhouse and conventional rooting (shade cloth with 50% of shade). The experiment was carried out by using split plots with three different environments in the main plot and two substrates in the subplots. One also used five replications and ten cuttings per plot. Analyzing the results one hundred days after the experiment implantation one noticed that the sand had proportioned higher percentage of rooting (68%) compared to Plantmax (48%). The wet chamber also was the environment that provided better conditions for the propagation of the mini-ixora, with the highest percentage of rooting, 98%, compared to the greenhouse, 66% and to the conventional rooting, 10%. Moreover, sand and wet chamber also provided a better root quality. One concluded that the best substrate for mini-ixora propagation was sand and the cuttings should be placed in the wet chamber.

LESSA, M. A. et al. 950Ciênc. agrotec., Lavras, v. 33, n. 4, p. 950-955, jul./ago. 2009 ABSTRACT Succulents present great commercial importance, but information on the cultivation of these plants are not enough, especially considering the use of fertilizers during the growth phase. The objective of this study was to evaluate the effect of different fertilizers applied to the substrate in the cultivation of Kalanchoe luciae Raym.-Hamet. Cuttings measuring 6 cm in height and 12 cm in diameter were cultivated in 1.5 L pots containing the substrate (1 soil: 1 sand: 1 vermiculite). In this experiment, the effect of the fertilization based on NPK 10:10:10 was evaluated with and without the addition of a fertilizer mixture composed of 5 g bone flour, 5 g dolomite limestone, and 50 g ground charcoal, this proportion that was used for each 1.5 L substrate. After 60 days, an increase in the number of leaves, which was proportional to the increase in the doses of NPK applied, was verified. Even though the plants presented higher number of leaves (18.34) and higher height (18.73 cm) for the substrate with 1.5 g L -1 of NPK 10:10:10, plants did not reach the compact aspect suggested by some producers. The addition of fertilizer mixture presented no effect on the leaves number and neither to the plant height, however, it was observed that the plants that received the fertilizer mixture presented the fifth leaf with bigger diameter. None of the treatments favored the formation of one of the most important characteristics of this species, the reddish color on the borders of the leaves. APPLICATION OF DIFFERENT FERTILIZERS IN SUBSTRATE FOR Index terms:Crassulaceae, fertilization, ornamental plants. RESUMOAs suculentas apresentam grande importância comercial, mas, as informações sobre o cultivo destas plantas ainda são escassas, especialmente em relação à fertilização durante a fase de crescimento. Neste trabalho, objetivou-se avaliar o efeito de diferentes adubações no substrato para cultivo de Kalanchoe luciae Raym.-Hamet. Mudas com 6 cm de altura e 12 cm de diâmetro foram cultivadas em vasos de 1,5 L, contendo o substrato (1 terra:1 areia: 1 vermiculita). Avaliou-se, nesse experimento, o efeito de adubações à base de NPK 10:10:10, com e sem adição de uma mistura de adubos composta de 5 g de farinha de osso, 5 g de calcário dolomítico e 50 g de carvão vegetal triturado, proporção essa, utilizada para cada 1,5 L de substrato. Após 60 dias, verificou-se que o aumento do número de folhas foi proporcional ao aumento das doses de NPK aplicadas. Apesar de apresentarem maior número de folhas (18,34) e maior altura das plantas (18,73 cm) para o substrato com 1,5 g L -1 de NPK 10:10:10 as plantas não atingiram o aspecto compacto sugerido por alguns produtores. Não houve efeito da adição da aplicação da mistura de adubos sobre o número de folhas formadas e altura da planta, entretanto, observou-se que as plantas que receberam a mistura de adubos apresentaram maior diâmetro da 5ª folha. Nenhum dos tratamentos favoreceu a formação de u...

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Integrated production systems have been used with various crops, and their use in floriculture is innovative. The effects of green fertilization in floriculture and the appropriate fertilization levels are still unknown. The aim was to identify the best dose of chemical fertilizer, with or without green fertilization, for integrated production of ‘Carola’ roses. The treatments consisted of 4 doses of the chemical fertilization recommended for rose bushes, (25%, 50%, 75%, and 100%), with or without green fertilization (calopo). Plants that were not treated with 100% (or complete) of chemical fertilization were supplemented monthly with Bokashi (16 g/plant, via the soil) and biofertilizer (5% via the leaves). The assessments were conducted 3 times per week for a year. The use of less chemical fertilizer did not affect rose production or quality, whereas the use of green fertilization did not provide a satisfactory outcome. The analyses, biometric, accumulation and nutrient content, and chemical characteristics of the soil, indicated that green fertilization with calopo was not beneficial. Moreover, with the exception of nitrogen and magnesium, there is the possibility of using 75% of the recommended chemical fertilization in rose bushes.

Conventional pruning is a very common practice for pruning rose cultivars in Brazil. However, few Brazilian producers known any other efficient plant training method for roses, namely “lateral stem bending” or “arching technique”, which involves bending the branches of the rosebush in order to increase the photosynthetic rate of the plant. As well as plant training, the use of fertilizers must also be done carefully in order to obtain high quality roses. Biofertilizers are recommended because of their multiple effects: fertilizer, protein synthesis stimulant, insect repellent, and disease controller. The aim of this study was to assess the plant training system and management of organic fertilizer on the incidence and severity of disease in the ‘Osiana’ and ‘Carola’ roses. The ‘Osiana’ rosebushes received three concentrations (0%, 5%, and 15%) of foliar biofertilizer applied monthly to the leaves together with two plant conduction methods (conventional pruning and lateral stem bending). ‘Carola’ roses were treated with three types of fertilizer (chemical fertilizer on the soil + bokashi on the soil, chemical fertilizer on the soil + foliar FishfertilÒand chemical fertilization on the soil without applying organic fertilizers) every two weeks, together with 2 plant conduction systems (conventional pruning and lateral stem bending). The additional treatments in ‘Carola’ roses were composed of two organic fertilizers (Bokashi and foliar Fishfertil®) and chemical fertilization with lateral pruning. The incidence and severity of disease in these plants during the experiment were assessed over 5 months. For the ‘Osiana’ rose, the incidence and severity of disease were not influenced by fertilizer management or plant training methods. For the ‘Carola’ roses, the different types of fertilizer caused different responses according to the plant training system used, with the biofertilizer Fishfertil® reducing the incidence of powdery mildew when applied to plants with laterally bent stems.

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