scholarly journals Control Biológico de Rosellinia bunodes en helecho hoja de cuero (Rumohra adiantiformis), con el hongo Trichoderma lignorum

2019 ◽  
Vol 2 (1) ◽  
pp. 43-49
Author(s):  
Bernardo Mora ◽  
José Arturo Solórzano
Keyword(s):  
Rumohra Adiantiformis

Control Biológico de Rosellinia bunodes en helecho hoja de cuero (Rumohra adiantiformis), con el hongo Trichoderma lignorum

scholarly journals Criptógamos do Parque Estadual das Fontes do Ipiranga, São Paulo, SP, Brasil: Pteridophyta: 7. Dryopteridaceae e 11. Lomariopsidaceae

Hoehnea ◽  
2012 ◽  
Vol 39 (4) ◽  
pp. 555-564 ◽  
Author(s):  
Regina Yoshie Hirai ◽  
Jefferson Prado
Keyword(s):  
Sao Paulo ◽  
São Paulo ◽  
Rumohra Adiantiformis

Neste trabalho são apresentados os dados referentes ao levantamento florístico das famílias Dryopteridaceae e Lomariopsidaceae no Parque Estadual das Fontes do Ipiranga (PEFI). No total foram encontrados na área cinco gêneros e nove espécies, sendo que Dryopteridaceae está representada por dois gêneros (Polybotrya e Rumohra) e quatro espécies: Polybotrya cylindrica Kaulf., P. semipinnata Fée, P. speciosa Schott e Rumohra adiantiformis (G. Forst.) Ching, enquanto Lomariopsidaceae está representada por três gêneros (Elaphoglossum, Mickelia e Lomariopsis) e cinco espécies: Elaphoglossum ornatum (Mett. ex Kuhn) Christ, E. nigrescens (Hook.) T. Moore ex Diels, E. macrophyllum (Mett. ex Kuhn) Christ, Mickelia scandens (Raddi) R.C. Moran et al. e Lomariopsis marginata (Schrad.) Kuhn. São apresentadas chaves para identificação dos gêneros e espécies, bem como descrições, distribuição geográfica, comentários e ilustrações para alguns dos táxons estudados.

scholarly journals Extração e comercialização de folhagens ornamentais da Mata Atlântica: o caso da verdes (Rumohra adiantiformis) no RS

2004 ◽  
Vol 42 (4) ◽  
pp. 575-596 ◽  
Author(s):  
Rafael Perez Ribas ◽  
Lovois de Andrade Miguel
Keyword(s):  
Rio Grande ◽  
Rio Grande Do Sul ◽  
Mata Atlântica ◽  
Mata Atlantica ◽  
Rumohra Adiantiformis

Este trabalho restitui os resultados de uma pesquisa sobre a comercialização de samambaia-preta (Rumohra adiantiformis (G. Forst) Ching), também conhecida como verdes, que é extraída na região da Encosta Atlântica do Rio Grande do Sul. Além de ser considerada uma das maiores regiões produtoras desta folhagem no Brasil, um número significativo de agricultores familiares desta região tem na extração desta espécie sua principal fonte de renda. Os resultados deste estudo permitem perceber a existência de uma remuneração bastante diferenciada entre os diferentes agentes envolvidos, salientando o predomínio de relações de cunho comercial precárias e informais, e a inexistência de representação e organização dos atores envolvidos. Tal situação pode ser imputada, em grande parte, ao caráter ilegal e clandestino desta atividade, tendo em vista a legislação ambiental vigente no Estado do Rio Grande do Sul.

scholarly journals 510 PB 260 COMPARISON OF FIELD AND SHADEHOUSE MICROCLIMATE FACTORS RELATED TO EVAPORATION AND CROP TRANSPIRATION

HortScience ◽  
1994 ◽  
Vol 29 (5) ◽  
pp. 504e-504
Author(s):  
Robert H. Stamps
Keyword(s):  
Photon Flux ◽  
Pressure Gradients ◽  
Crop Canopy ◽  
Photosynthetic Photon Flux ◽  
Water Losses ◽  
Air Temperatures ◽  
Plant Water Use ◽  
Adjacent Field ◽  
Rumohra Adiantiformis ◽  
Incoming Light

Microenvironmental conditions in a shadehouse covered with shade fabric designed to exclude 70% of incoming light were monitored and compared to those in an adjacent field to quantify differences related to plant water use. Radiant flux density and photosynthetic, photon flux inside the shadehouse varied seasonally between about 18% to 28% of outside values. During the day, leaf and air temperatures around the crop canopy were generally lower and relative humidities higher inside the shadehouse than outside. Leaf-to-air vapor pressure gradients inside the shadehouse averaged about half those outside. Wind run inside was <10% of wind run outside. Differences between reference ET (ETo) values, calculated using Penman's equation), inside and outside the shadehouse were greatest during summer months. Outside evaporatory pan (Epan) water losses ranged from 205 mm in July to 95 mm in Nov. For the same months, Epan losses inside were about 80% lower. Monthly ETactual, as determined for Rumohra adiantiformis growing in lysimeters in the shadehouse, ranged from around 40% to 80% of inside Eo.

scholarly journals Microbial Populations and Potential Phytotoxicity of Rhizobacteria Isolated from Jamaican Anthurium

HortScience ◽  
1997 ◽  
Vol 32 (3) ◽  
pp. 468C-468
Author(s):  
W.A. Bergfield ◽  
D.N. Sasseville ◽  
R.J. Kremer ◽  
T. Souissi
Keyword(s):  
Treatment Effects ◽  
Microbial Populations ◽  
Fresh Weight ◽  
Associated Bacteria ◽  
Production Studies ◽  
Colony Forming Units ◽  
Population Shift ◽  
Anthurium Andraeanum ◽  
Rumohra Adiantiformis

Pesticides are used extensively in ornamental production. Studies of repeated pesticide applications indicate that microbial changes occur in the rhizosphere of the plant. In addition to controlling the target pest, often a population shift of bacteria may occur. This has been previously shown in research associated with leatherleaf fern [Rumohra adiantiformis (Forst.) Ching] and the fungicide benomyl. Rhizobacteria (root-associated bacteria) of anthurium (Anthurium andraeanum) were investigated with respect to total populations and isolates that are potentially phytotoxic. The anthurium sample roots were taken from commercial Jamaican production sites. The sites had either a benomyl or non-benomyl history. Rhizobacterial populations were estimated by dilution plating and subcultures were taken for a phytotoxicity bioassay. Micrographs of samples were prepared to examine treatment effects on the morphology of roots. Rhizobacteria populations were frequently at 106 colony forming units per gram fresh weight. Consistently, greater than 50% of the isolates from each treatment were potentially phytotoxic. However, in the benomyl history samples, there was a greater diversity of phytotoxic isolates.

scholarly journals Cold Protection of Leatherleaf Fern Using Crop Covers and Overhead Irrigation in Shadehouses

HortScience ◽  
1991 ◽  
Vol 26 (7) ◽  
pp. 862-865
Author(s):  
Robert H. Stamps
Keyword(s):  
Vase Life ◽  
Overhead Irrigation ◽  
Rumohra Adiantiformis ◽  
Crop Irrigation

Four spunbonded crop covers were evaluated for use with and without irrigation for cold protection of leatherleaf fern [Rumohra adiantiformis (Forst.) Ching]. Heavier and less porous covers provided the most protection when used without over-the-crop irrigation. However, differences in cover weight and porosity did not affect temperatures under covers when over-the-crop irrigation was applied. Damage to immature fronds was decreased by 75% to 99% when the covers were used alone and by 98% to 99% when the covers were used with over-the-crop irrigation. Covers had no effect on frond vase life.

scholarly journals Presencia de Colletotrichum acutatum y Colletotrichum gloeosporioides en helecho hoja de cuero, limón criollo, papaya, carambola y mango en Costa Rica y Florida (Estados Unidos)

1969 ◽  
Author(s):  
Marcia Barquero Quirós ◽  
Natalia A. Peres ◽  
Luis Felipe Arauz
Keyword(s):  
Costa Rica ◽  
Carica Papaya ◽  
Colletotrichum Gloeosporioides ◽  
Mangifera Indica ◽  
Colletotrichum Acutatum ◽  
Averrhoa Carambola ◽  
Citrus Aurantifolia ◽  
Rumohra Adiantiformis

La antracnosis es una enfermedad causada por varias especies del género Colletotrichum en diferentes hospederos. C. acutatum y C. gloeosporioides son especies morfológicamente similares, que pueden causar síntomas similares en el mismo hospedero. Se colectaron 220 aislamientos de Colletotrichum de muestras con síntomas típicos de antracnosis en helecho hoja de cuero (Rumohra adiantiformis), limón criollo (Citrus aurantifolia), carambola (Averrhoa carambola), papaya (Carica papaya) y mango (Mangifera indica) en Costa Rica y Florida, Estados Unidos. Los aislamientos se caracterizaron por morfología de colonia, sensibilidad al benomil, y PCR con los iniciadores específicos para C. acutatum y C. gloeosporioides CaInt2 y Cg/fInt1, respectivamente; también se analizó la morfología de las colonias de ambas especies. De los 85 aislamientos obtenidos de mango, todos los aislamientos de Florida fueron identificados como C. acutatum, mientras que todos los aislamientos de Costa Rica fueron C. gloeosporioides. De los 60 aislamientos de carambola, 3 provenientes de Costa Rica fueron C. acutatum (primer informe) y el resto fueron C. gloeosporioides. Todos los aislamientos de helecho hoja de cuero (25 aislamientos) y de limón criollo (25 aislamientos) se identificaron como C. acutatum. Los demás aislamientos de carambola y mango así como todos los aislamientos de papaya, se identificaron como C. gloeosporioides. No se encontró diferenciación de síntomas entre ambas especies sobre los hospederos donde se encontraron.

Sign in / Sign up

Export Citation Format

Share Document