Elisabeth Regina Tempel Stumpf

Enraizamento de estacas de Chamaecyparis lawsoniana Parl. em cinco substratos com uso de ácido indolbutírico

To determine the best medium available in Pelotas, RS, for rooting of Chamaecyparis lawsoniana Parl. cuttings, the media fine vermiculite, carbonized rice hull, sand, carbonized rice hull + fine vermiculite and sand + fine vermiculite (1:1 v/v) were used. This experiment was carried out in a glass greenhouse with intermitent mist at the Plant Science Department of Faculdade de Agronomia Eliseu Maciel/Universidade Federal de Pelotas, from May to September 1997. Apical cuttings 15cm long were treated with indolbutyric acid (IBA) at 10.000ppm. The following evaluations were made: number of roots per cutting, weight of root dry matter, length of the longest root per cutting, and rooted cutting percentage. The results show that the vermiculite medium, with the IBA concentration utilized, is the most suitable for the rooting of C. lawsoniana cuttings, with 99% of rooting, greater number of roots per cutting (15), greater length of roots (12cm) and greater weight of root dry matter (0.04g).

Abóboras ornamentais: atributos valorizados por consumidores finais e decoradores florais

No Rio Grande do Sul agricultores familiares cultivam variedades crioulas de aboboras que apresentam potencial para uso ornamental pela ampla variabilidade genetica para caracteristicas morfologicas externas. Algumas destas variedades sao conservadas no Banco Ativo de Germoplasma de Cucurbitaceas da Embrapa Clima Temperado. Para colocar em uso este germoplasma e essencial que seja caracterizado morfologicamente. As preferencias e a aceitacao do mercado consumidor podem ser outra informacao util. Desta forma, este trabalho teve como objetivo verificar a aceitacao de aboboras ornamentais junto ao mercado consumidor (consumidor final e decoradores florais) e sua percepcao com relacao aos atributos ornamentais. Para tanto, foi realizada entrevista com consumidores finais e decoradores florais, atraves das quais estes indicavam os atributos ornamentais preferidos e o grau de satisfacao, utilizando uma escala hedonica. Os atributos morfologicos de fruto selecionados foram formato, cor, textura e desenho formado pela cor secundaria na casca. Para verificar a aceitacao dos frutos foi utilizada a escala de atitute ( Food Action Rating Scale – FACT). Os resultados foram apresentados em porcentagem e foram elaborados histogramas. Foram entrevistados 150 consumidores finais e 30 decoradores florais. Nao foi evidenciada diferenca expressiva entre consumidores finais e decoradores florais na percepcao dos atributos esteticos das aboboras ornamentais. Os frutos das aboboras ornamentais apresentam grande potencial de uso e valor ornamental, com excelente aceitacao pelos consumidores (tanto consumidores finais quanto decoradores florais).

Vase life of roses, gerberas and chrysanthemums commercialized in Pelotas-RS

Cut flowers are one of the most important floricultural products and one of the features that define its quality is vase life. Thus, longer vase life will be achieved when production sites are closer to the consumer market. Based on the above, this experiment compared vase life of rose, gerbera and chrysanthemums supplied by Pelotas’s local growers and by Sao Paulo’s wholesalers. For each treatment (origin), 20 stems of each species were evaluated. Randomized block design were used with five repetitions of four stems per block and vase life assessment performed every three days during 15 days. Vase life was higher for roses and gerberas produced in Pelotas, average of 9 and 7 days, respectively. No significant difference was observed to chrysanthemum vase life, average were 12 days for both flower origins. The results indicate that the distance between the production sites and the consumer market influences the quality and vase life of roses and gerberas marketed in Pelotas

Native species that can replace exotic species in landscaping

Beyond aesthetics, the contemporary landscaping intends to provide other benefits for humans and environment, especially related to the environmental quality of urban spaces and conservation of the species. A trend in this direction is the reduction in the use of exotic plants in their designs, since, over time, they can become agents of replacement of native flora, as it has occurred in Rio Grande do Sul with many species introduced by settlers. However, the use of exotic species is unjustifiable, because the flora diversity of the Bioma Pampa offers many native species with appropriate features to the ornamental use. The commercial cultivation and the implantation of native species in landscaped areas constitute innovations for plant nurseries and landscapers and can provide a positive reduction in extractivism, contributing to dissemination, exploitation and preservation of native flora, and also decrease the impact of chemical products on environment. So, this work intends to identify native species of Bioma Pampa with features and uses similar to the most used exotic species at Brazilian landscaping. The species were selected from consulting books about native plants of Bioma Pampa and plants used at Brazilian landscaping, considering the similarity on habit and architecture, as well as characteristics of leafs, flowers and/or fruits and environmental conditions of occurrence and cultivation. There were identified 34 native species able to properly replace exotic species commonly used. The results show that many native species of Bioma Pampa have interesting ornamental features to landscape gardening, allowing them to replace exotic species that are traditionally cultivated

Espécies nativas do Bioma Pampa para uso como folhagem de corte

O lancamento de novas plantas no mercado tem inicio na definicao das caracteristicas que as qualificam como ornamentais. A identificacao dessas plantas dentre a vegetacao natural, aliada a producao em escala comercial, valoriza e colabora paraa preservacao da flora de uma regiao, podendo, ainda, promover o desenvolvimento e imprimir competitividade a Floriculturalocal. A composicao vegetal do Rio Grande do Sul, certamente, abriga especies com caracteristicas ornamentais adequadaspara uso em arranjos florais. Nativas da regiao sul do Estado, as especies Baccharis articulata, B. usterii, Hypericum connatum, Myrsine umbellata, Schinus lentiscifolius e S. terebinthifolius mostram caracteristicas desejaveis para uso comofolhagens de corte. Assim, este trabalho foi desenvolvido com o objetivo de descrever as caracteristicas ornamentais dessas especies, averiguando seu potencial para uso como folhagens de corte. A caracterizacao ornamental teve como base a avaliacao de atributos qualitativos e quantitativos, que receberam as notas zero, cinco ou dez. As especies avaliadas apresentam alto grau de potencialidade ornamental, mostrando caracteristicas adequadas para o uso como complementos de arranjos florais.