SABIIA - Sistema Aberto e Integrado de Informação em Agricultura (Sabiia)

Gielis, C..

The known species of Pterophoridae occurring in Argentina and Chile are reviewed. Nearly all the available type specimens of species occurring in the area have been examined and five new synonyms have been established. Some primary types are considered to be lost. In this paper three new genera and 29 new species are described. The adults of all species, and the male and female genitalia are illustrated. The distribution is mapped.

Contribuição à herpetologia da Argentina e do Rio Grande do Sul, Brasil por William Wright Milstead (Amphibia, Reptilia)

Palavras-chave: Pterophoridae; Neotropics; Argentina; Chile; Distribution; Keys.; 42.75.

Ano: 1991

URL: http://www.repository.naturalis.nl/record/317669

Zoologia

Lema,Thales de; Braun,Pedro Canísio.

In this paper we are presenting the list of the specimens and the taxa obtained; there are 73 names of species belonging to 40 genera, of which 32 species and 13 genera are amphibians, and 42 species and 27 genera are reptiles. There are several field notes of Milstead and many data on the snakes studied by Lema with Milstead. The collection was widespread by Milstead to several institutions, but mainly to Field Museum of Natural History, Chicago, and Museu Nacional do Rio de Janeiro, Brazil.

Boll weevil in South America.

Palavras-chave: Zoogeography; Amphibia; Reptilia; Argentina; Brazil.

Ano: 1993

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751993000200007

Infoteca-e

CAMPANHOLA, C.; MORAES, G. J. de.

bitstream/item/145707/1/1994FL001-CAmpanhola-boll-2405.pdf

Tipo: Fôlder / Folheto / Cartilha (INFOTECA-E)

Palavras-chave: Bollweevil; Insect; Production system; Bicudo do algodoeiro; Manejo integrado; IPM; Brasil; Paraguai; America do Sul.; Anthonomus Grandis; Algodão; Inseto; Praga; Sistema de Produção.; Argentina; South America; Paraguay; Cotton; Integrated pest management; Brazil..

Ano: 1994

URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/11770

On the production economics of cattle

AgEcon

Mundlak, Yair; Huang, He; Favaro, Edgardo.

"May 1995." Includes bibliographical references (p. 32-34).

Tipo: Working or Discussion Paper

Palavras-chave: Livestock; Technology; Argentina; Production economics; Uruguay; United States; Beef industry -- Latin America; Livestock Production/Industries.

Ano: 1995

URL: http://purl.umn.edu/97770

Persistence of the biocide activity of atrazine in soils of the southeast of Buenos Aires Province

Planta Daninha

Delmonte,A.A.; Bedmar,F.; Mantecón,J.D.; Echeverría,H.; Barassi,C.A..

Atrazine persistence in soils of the southeast of Buenos Aires Province, was studied by an oat bioassay. Atrazine doses of 0.58, 1.16, and 2.32 mg.g-1 dry soil weight (DSW) were applied to pots containing soils from Balcaree, A. Gonzáles Chaves and San Cayetano sites, whose organic matter (OM) content of soils were 5.70, 5.15, and 3,84%, respectively. Avena sativa cv. Millauquén plants were grownth in the pots under greenhouse conditions at different times after atrazine application. Shoots were evenly cut above the soil and dry weight determined as a measure of plant growth. Plants grown in non-sprayed soil were used as controls. Relative dry weight (RDW) of shoots was calculated as percentage of control. Atrazine phytotoxicity was expressed in terms of...

Analisis de la comunidad de malezas en trigo cultivado sobre distintos antecesores

Palavras-chave: Oat bioassay; GR50; Phytotoxicity; Argentina.

Ano: 1996

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83581996000200004

Planta Daninha

Requesens,E.; Moran,C.; Pasqualini,A.; Nuciari,M..

Comparou-se a composição e freqüência relativa das espécies e dos índices de diversidade e dominância da comunidade infestante de três áreas de trigo que foram cultivadas com trigo, milho e batata anteriormente. O estudo foi realizado na região de Mar del Plata, Província de Buenos Aires Argentina. Em cada área, realizou-se 40 amostragens de 1m2, dispostos de forma regular no campo, antes da aplicação dos herbicidas. Foram observadas pequenas diferenças entre as três comunidades florísticas levantadas, porém importantes mudanças foram verificadas na freqüência relativa de algumas espécies. Stellaria media foi a espécie mais freqüente, quando a cultura foi procedida de trigo e milho e sendo apenas superada por Solanum tuberosum quando a cultura do trigo...

A cadeia produtiva do frango de corte no Brasil e na Argentina.

Palavras-chave: Seqüência de cultivos; Freqüências relativas; Diversidade específica; Argentina.

Ano: 1996

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83581996000200008

Infoteca-e

CANEVER, M. D.; TALAMINI, D. J. D.; CAMPOS, A. C.; SANTOS FILHO, J. I. dos.

O desenvolvimento da agroindustria avicola brasileira e argentina; A agroindustria avicola no Brasil; A agroindustria avicola na Argentina; A teoria competitiva e o modelo de "Porter"; Evolucao da teoria competitiva; O modelo competitivo de "Porter" na agroindustria do frango de corte; Os determinantes da competitividade da agroindustria avicola brasileira e argentina; Condicoes de demanda; As interrelacoes da demanda; Estrategias mercadologicas e composicao da demanda; Condicoes de fatores; Custos de producao do frango vivo; As condicoes de fatores de maior importancia na producao do frango vivo; Instalacoes e equipamentos; Cama; Graos; Recursos energeticos; Mao-de-obra; Transportes; Industrias correlatas e de apoio; Material genetico; Produtos...

Tipo: Documentos (INFOTECA-E)

Palavras-chave: Brasil; Broiler; Production; Economy.; Economia; Frango de Corte; Produção.; Argentina; Brazil; Poultry..

Ano: 1997

URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/433669

Reared Opiinae (Hymenoptera: Braconidae) from Argentina

Achterberg, C. van; Salvo, A..

The results of the identification of a small collection of Opiinae reared from Agromyzidae from Argentina are reported; six new species and one new genus (Lorenzopius gen. nov.; type species: Lorenzopius calycomyzae spec. nov.) are described. A checklist to the species of Opiinae known from Argentina is added. The following new combinations are proposed: Doryctobracon turicai (Turica & Mallo, 1961), Lorenzopius sanlorenzensis (Fischer, 1964), L. tubulatus (Fischer, 1979), Phaedrotoma agromyzophaga (Blanchard, 1940), P. alternantherae (Fischer, 1966), P. atomica (Fischer, 1962), P. brethesi (De Santis, 1967), P. curtinotum (Fischer, 1983) P. ebriops (Fischer, 1978), P. eunomia (Fischer, 1968), P. euterpe (Fischer, 1968), P. fissilis (Fischer, 1969) P....

South American wheat markets and MERCOSUR

Palavras-chave: Braconidae; Opiinae; Lorenzopius; Phaedrotoma; Biosteres; Doryctobracon Opius; Utetes; Psyttalia; Agromyzidae; Neotropical; Argentina; Biology; Checklist; 42.75.

Ano: 1997

URL: http://www.repository.naturalis.nl/record/318336

AgEcon

Diaz-Bonilla, Eugenio.

"November 1997." Includes bibliographical references (p. 27-31).

Tipo: Working or Discussion Paper

Palavras-chave: Trade liberalization; Wheat production -- South America; Trade policy -- South America; Argentina; Brazil; World Trade Organization; Crop Production/Industries; International Relations/Trade.

Ano: 1997

URL: http://purl.umn.edu/97561

Diversity of genomic electropherotypes of naturally occurring equine herpesvirus 1 isolates in Argentina

BJMBR

Galosi,C.M.; Norimine,J.; Echeverría,M.G.; Oliva,G.A.; Nosetto,E.O.; Etcheverrigaray,M.E.; Tohya,Y.; Mikami,T..

The genomes of 10 equine herpesvirus 1 (EHV-1) strains isolated in Argentina from 1979 to 1991, and a Japanese HH1 reference strain were compared by restriction endonuclease analysis. Two restriction enzymes, BamHI and BglII, were used and analysis of the electropherotypes did not show significant differences among isolates obtained from horses with different clinical signs. This suggests that the EHV-1 isolates studied, which circulated in Argentina for more than 10 years, belong to a single genotype.

Tipo: Info:eu-repo/semantics/other

Palavras-chave: Argentina; Electropherotypes; Equine herpesvirus.

Ano: 1998

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X1998000600007

The Berriasian genus Groebericeras in Argentina and the problem of its age

Aguirre-Urreta, M.B.; Alvarez, P.P..

Groebericeras bifrons Leanza is described from the Chacao Formation of central Mendoza and the Lo Valdés Formation of central Chile. The species appears limited to the Argentiniceras noduliferum Zone, which is traditionally placed in the lower Berriasian. Spanish records of Groebericeras appear to be younger (Hoedemaeker, 1982), while Groebericeras from Iraq were placed in the late Berriasian by comparison with the Spanish records (Howarth, 1992).

Long-distance correlations in the Valanginian-Hauterivian: Argentina - Western Mediterranean - NW Europe

Palavras-chave: Ammonoidea; Groebericeras; Berriasian; Tithonian; Argentina; Calpionellidae; 38.22; 42.73.

Ano: 1999

URL: http://www.repository.naturalis.nl/record/216194

Rawson, P.F..

Despite the considerable differences in faunas from three widely separated areas in the Early Cretaceous world (Argentina, the Mediterranean area and NW Europe) eight genera are common to all three: Valanginites, Olcostephanus, Karakaschiceras, Neohoploceras, Neocomites, Oosterella, Spitidiscus, and Crioceratites. Across two well-marked intervals (mid Valanginian and mid Hauterivian) the faunas are sufficiently close to allow correlation across the whole area. These represent intervals of global sealevel rise.

Meiofauna communities from the Straits of Magellan and the Beagle Channel

Palavras-chave: Ammonites; Argentina; Mediterranean area; NW Europe; Early Cretaceous; 38.22; 42.73.

Ano: 1999

URL: http://www.repository.naturalis.nl/record/216200

OMA

Chen, G.T.; Herman, R.L.; Vincx, M..

Meiofauna from 20 stations (ranging between 8 and 550 m) in the Magellan Straits and the Beagle Channel revealed 28 small sized taxa of higher categories including the temporary meiofauna. Nematoda, Copepoda Harpacticoidea and Polychaeta occurred in all samples; Turbellaria, Bivalvia, Kinorhyncha and Ostracoda were regularly present. Nematodes represented between 68% and 94% of the meiofauna at each station, followed by the copepods (2.3% to 14.5%) and polychaetes (1.1% to 11.5%). Maximal total density, 9700 individuals 10 cm(-2), was found in the surroundings of Picton Island, while the mean abundance per station was 3374 individuals 10 cm(-2). The vertical pattern within the sediment showed that 87% of meiofauna components concentrated in the upper 0-5...

Palavras-chave: Channels Community composition Meiobenthos Straits Taxa Vertical distribution Zonal distribution Zoobenthos Bivalvia Copepoda [copepods] Harpacticoida Kinorhyncha [spiny-crown worms] Nematoda [Nematodes] Ostracoda Polychaeta [Bristle worms] Turbellaria [Flatworms] PSW; Argentina; Tierra del Fuego; Beagle Channel PSW; Chile; Magellan Straits PSW; Chile; Tierra del Fuego; Beagle Channel.

Ano: 1999

URL: http://www.vliz.be/imisdocs/publications/256154.pdf

Potential for Carbon Forest Plantations in Marginal Timber Forests: The Case of Patagonia, Argentina

AgEcon

Sedjo, Roger A..

With the advent of the Kyoto Protocol and its recognition of the use of forestry activities and carbon sinks as acceptable tools for addressing the issue of the build-up of atmospheric carbon, the potential role of planted forests as a vehicle for carbon sequestration has taken on a new significance. Additionally, the emergence of tradable emission permits and now tradable carbon offsets provides a vehicle for financially capturing the benefits of carbon emission reductions and carbon offsetting activities. In a world where carbon sequestration has monetary value, investments in planted forests can be made with an eye to revenues to (at least two) joint outputs: timber and the carbon sequestration services. The first section of this paper examines the...

Tipo: Working or Discussion Paper

Palavras-chave: Carbon sequestration; Forest plantations; Carbon offsets; Present value; Kyoto Protocol; Argentina; Developing countries; Environmental Economics and Policy; Q15; Q20; Q23.

Ano: 1999

URL: http://purl.umn.edu/10661

LAS ESPECIES ARGENTINAS DE CROTALARIA (LEGUMINOSAE - CROTALARIEAE): NOVEDADES, DESCRIPCIONES Y CLAVE

Gayana Botánica

Gómez-Sosa,Edith.

El género Crotalaria L. tiene 12 especies en el área subtropical de Argentina. Se citan por primera vez cinco especies para el país, de las cuales cuatro son nativas: C. balansae Micheli, C. maypurensis Kunth., C. paulina Schrank y C. tweediana Benth.; y una especie introducida: C. spectabilis Roth. Todas las especies se describen e ilustran, incluyéndose información sobre distribución geográfica, observaciones ecológicas y usos. Se incluye una clave para diferenciar las especies nativas y naturalizadas presentes en Argentina.

Tipo: Journal article

Palavras-chave: Taxonomía; Crotalaria; Leguminosae; Argentina.

Ano: 2000

URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-66432000000100006

EVALUACIÓN DE LA ACTIVIDAD RADICAL EN Schinopsis balansae Engl. EMPLEANDO 32P

Agricultura Técnica

Prause,Juan; Marinich,María J..

Se realizó un estudio en una población de quebracho colorado chaqueño (Schinopsis balansae Engl.), principal especie forestal de valor económico del Parque Chaqueño Húmedo de Argentina, seleccionando ejemplares por su altura y diámetro altura de pecho (DAP). Se colocó una solución de KH2 32PO4 , a 0,10 m y 0,20 m de profundidad. Semanalmente durante 70 días, se determinó la concentración de radioactividad en hojas maduras y enteras de las ramas de un año. En ambas profundidades se detectó la presencia de raíces fisiológicamente activas, siendo mayor en la profundidad de 0,10 m, coincidiendo con la profundidad del horizonte A

Tipo: Journal article

Palavras-chave: Actividad radical; Forestales; Radioisótopos; Chaco; Argentina.

Ano: 2000

URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0365-28072000000400011

FIRST RECORD OF SOME PERITRICHS CILIATES FOR SAN MIGUEL DEL MONTE POND (BUENOS AIRES, ARGENTINA)

Gayana

Zaleski,M.; Claps,C..

Peritrichs attached to submerged macrophytes, filamentous chlorophytes and debries have been found in San Miguel del Monte pond (Buenos Aires province, Argentina) during the period March 1998- March 1999. Specimens were identified, illustrated and measured alive. Fourteen species of Subclass Peritrichia new for the country are described, illustrated and commented: Epistylis hentscheli, E. tubificis, E. vestita, Opercularia elongata, Cothurnia annulata, Cothurniopsis valvata, Pyxicola limbata, Thuricola innixa, Th. kellicotiana, Vaginicola attenuata, Vorticella picta, V. pulchella, V. rotunda and Zoothamnium ramosissimum

Tipo: Journal article

Palavras-chave: Ciliates; Peritrichs; First record; Pampasic pond; San Miguel del Monte; Argentina.

Ano: 2001

URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-65382001000100007

NEW ALGAE RECORDS (CHLOROPHYCEAE AND BACILLARIOPHYCEAE CLASSES) FROM SIX PAMPEAN LOTIC SYSTEMS OF ARGENTINA

Gayana Botánica

Mercado,Liliana M..

Nineteen new record species for Argentina belonged to Bacillariophyceae and Chlorophyceae Classes were identified as the result of the analysis of a total of 103 phytoplankton samples obtained from a 5-year study survey performed in 6 lotic systems from Buenos Aires province, tributaries of Río de la Plata river: Paraná de las Palmas river (1995-1996), Samborombón river, El Pescado, J. Blanco, Buñirrigo, Rodríguez and El Gato streams (1997-1998) and in a intensive study carried out in the last two systems (1999). The taxa are ilustrated, a range of physical and chemical water variables of the sampling sites in which each species was found is furnished, together with the environmental requirements, cited in the literature. The 16 % of the algae were...

Tipo: Journal article

Palavras-chave: Chlorophyceae; Bacillariophyceae; New records; Lotic systems; Argentina.

Ano: 2001

URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-66432001000200001

SISTEMA DE CRUZAMIENTO Y ESTIMACIONES EN LA EFICIENCIA DE POLINIZACIÓN SOBRE TRICHOCEREUS PASACANA (CACTACEAE) EN DOS POBLACIONES DEL NOROESTE ARGENTINO

Gayana Botánica

Badano,Ernesto I.; Schlumpberger,Boris O..

Los objetivos de este estudio fueron analizar el sistema de cruzamiento y la eficiencia de la polinización en Trichocereus pasacana y sus efectos sobre la reproducción. Se trabajó sobre dos poblaciones del noroeste Argentino, una dentro de un área protegida (Valle de Tin Tin) y otra en un sitio con marcada actividad humana de agricultura y apicultura (Cachi Adentro). El sistema de cruzamiento se analizó mediante un experimento donde se evaluó autopolinización manual, polinización cruzada manual, polinización natural y autopolinización automática. Las variables de respuesta fueron producción de frutos, producción de semillas y capacidad germinativa. La producción de frutos permite sugerir que el sistema de cruzamiento de T. pasacana es xenogámico y que la...

Tipo: Journal article

Palavras-chave: Polinización; Sistema de cruzamiento; Actaceae; Cactus columnares; Argentina.

Ano: 2001

URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-66432001000200002

Caracteres morfométricos en Difflugia corona (Testacea, Difflugidae) en ambientes lénticos del Chaco, Argentina

Iheringia, Sér. Zool.

Blanco,Marcela Adriana.

Morphometric characters of two populations of Difflugia corona Wallich, 1864 collected in two climatic stations (Spring, Autumn) in lentic environments of Chaco Province, Argentina, are studied. In the first climatic station it was registered specimens of bigger size; in the second, the size of the individuals was very below the minimum values registered. It is suggested a possible relationship between the size of the organisms and the availability of the inhabitable vegetable substratum.