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| Registros recuperados: 443 | |
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| Muraro,Daniel; Negrelle,Raquel R.B; Cuquel,Francine L; Anacleto,Adilson. |
| The results of a study of the impact of market management on the ornamental plants supply chain are presented, using Curitiba, which is considered the most expressive flower market in Paraná State, as a case study. The flower market in Paraná ranks fifth in Brazil in terms of the volume of commercialization and sixth in terms of per capita consumption. However, this State, which initiated floriculture activities nearly 50 years ago, does not have a prominent florist supply pole, although adequate environmental conditions for such activities exist in Paraná. Therefore, to obtain more information about and a better understanding of the determinants of this scenario, a literature review and interviews were conducted. The flower shops structure and operations... |
| Tipo: Journal article |
Palavras-chave: Brazil; Business relationship; Floriculture; Production; Retail and wholesale. |
| Ano: 2015 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202015000300013 |
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| Sanhueza,Doris; Miranda,Marcelo; Gómez,Miguel; Bonacic,Cristian. |
| The relationship between species richness, diversity and grazing frequency along an altitudinal gradient (1900-3400 m) of an Andean ecosystem indicates that there is an intense human pressure on vegetation use. To identify the vascular flora and its conservation, 20 sites were sampled in two visits during 2006. We identified 79 taxa, including 62.03% native species, 22.78% adventitious and 8.86% endemic (the remaining 6.33% was identified only at the genus level). Some genera were underrepresented. We also observed latitudinal limits (Alstremeria andina), monotypic genera (Geoffroea, Kurzamra, Phragmites, Tessaria and Salix) and monogeneric families (Buddlejaceae, Ephedraceae, Equisetaceae, Malesherbiaceae, Salicaceae and Oxalidaceae). Moreover, we found... |
| Tipo: Journal article |
Palavras-chave: Altitudinal gradients; Species richness; Vegetal diversity; Human pressure; Andean wetlands ecosystems. |
| Ano: 2009 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202009000300008 |
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| Pizarro-Araya,Jaime; Cepeda-Pizarro,Jorge; Barriga,Juan E; Bodini,Andrés. |
| Current climate conditions in north-central Chile (25057'-32013'S,71043'-68°16'W)are characterized by increasing temperatures and decreasing rainfall. Global warming is expected to alter the hydrology and ecoclimatic characteristics of north-central basins with multiple effects, including changes in plant and arthropod phenology and biodiversity. Among these basins, the Elqui Valley (29°50'S, 70°52'W) stands out for its large population and the economic importance of tourism and agriculture. The taxonomic composition of agriculturally and medically important arthropods was studied in three locations in the Elqui Valley by manual capture of specimens and interviews with farmers, agricultural workers, and local leaders. Out of a total of 145 species of... |
| Tipo: Journal article |
Palavras-chave: Arthropods; Climate change; Agricultural cropland; Rangeland; Elqui Valley; Arid zones. |
| Ano: 2009 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202009000200006 |
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| Álvarez,Carlos E; Fernández-Falcón,Marino; Hernández,M. Mercedes. |
| Two cultivars ('Succession II' and 'Tango') of Leucospermum cordifolium were studied over three years in commercial plantations with optimum yields located on subtropical La Palma Island (Canarian Archipelago). Four foliar samplings were taken per year to determine the evolution of the N, P, and K contents over time and to determine the optimal month for foliar standard sampling. Foliar chlorophyll activity and the foliar standard concentrations of macro- and micronutrients were determined. Soil samples were also taken. Both cultivars developed well in soils with acid and slightly acid pH, low and high organic matter content, and in some cases, high available P concentrations, though Proteaceae is generally considered P sensitive. Chlorophyll activity... |
| Tipo: Journal article |
Palavras-chave: Leaf analysis; Protea; 'Succession II'; 'Tango'. |
| Ano: 2012 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202012000100008 |
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| Grez,Audrey; Zaviezo,Tania; González,Guillermo; Rothmann,Sergio. |
| In this work, we document the presence of Harmonia axyridis in Chile, an invasive coccinellid species that has had negative effects in other regions of the world, such as: impacts on non-target arthropods, invasions of houses and fruit damage. This species has been found in the last three years in the Metropolitan and Valparaíso regions, in crops, pine plantations and inside houses. We warn about the consequences of the introduction of this species to Chile and claim to take actions to avoid its spread in the country. |
| Tipo: Journal article |
Palavras-chave: Biological invasions; Coccinellidae; Harmoia axyridis; Harlequin lady beetle; Asian lady beetle. |
| Ano: 2010 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202010000300013 |
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| Beyá-Marshall,Víctor; Fichet,Thomas. |
| The aim of this study was to characterize the phenological, vegetative and reproductive behavior variables of Frantoio olive trees in an "off year (with a low crop load) and an "on" year (with a high crop load). To do this, during the 2011-2012 and 2012-2013 seasons, "off" and "on", respectively, phenological variables, plant growth (shoots and roots) and reproductive growth (type of flower, fruit set and growth), were monitored biweekly. In addition, the yield per tree was assessed, and the crop load was estimated. The main results showed that crop load strongly influenced these variables. The distribution and intensity of vegetative growth, both in the roots and aboveground, decreased more and had lower intensity in the high fruiting season, with a... |
| Tipo: Journal article |
Palavras-chave: Alternate bearing; Flowering; Rhizotron; Root growth dynamics; Shoots; Source-sink. |
| Ano: 2017 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202017000100005 |
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| Andrés González-Moralejo,Silvia; García Cortés,Mildrey. |
| Our research examines the agricultural labor market from the perspective of new Keynesian economics. Our aim is to verify that total gross output, total factor productivity, and real wages act as determinants of employment levels in Spanish agriculture. Three structural econometric models were estimated using census data for the period 1998-2013. This was a period of profound economic and social change, and the following two distinct sub-periods were compared: 1998-2007 (a period of economic boom) and 2008-2013 (a period of recession). The empirical evidence is consistent with neo-Keynesian theoretical posits, albeit with certain qualifiers derived from the specifically rural nature of the evidence. The results show a negative relationship between... |
| Tipo: Journal article |
Palavras-chave: Agrarian labor market; Neo-Keynesian model; Wages. |
| Ano: 2016 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202016000200002 |
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| Quezada,Celerino; Hernaíz,Santiago; Vidal,Iván; Alvarado,Roberto; Gallegos,Rubén; Yañez,Wilson. |
| C. Quezada, S. Hernaíz, I. Vidal, R. Alvarado, R. Gallegos, and W. Yañez. 2013. Selection of rice genotypes (Oryza sativa) with high nitrogen agronomic efficiency in an Acuic Durixererts soil, central-southern Chile. 40(2): 375-385. Nitrogen agronomic efficiency (NAE) is a key factor that has not been considered in rice breeding programs. The objective of this study was to evaluate nitrogen agronomic efficiency in twenty rice genotypes in an Acuic Durixererts soil (Quella Series) located in Chile's south central zone (36°04'S, 72° 0'W) over the 2008-09 growing season. The field experiment was carried out in a complete randomized split-plot block design with five N treatments of 0, 50, 100, 150 and 200 kg ha-1 and twenty genotype sub-treatments. The... |
| Tipo: Journal article |
Palavras-chave: Nitrogen agronomic efficiency; Nitrogen dose; Rice genotypes. |
| Ano: 2013 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202013000200012 |
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| Youlton,Cristian; Espejo,Paulina; Biggs,Jaime; Norambuena,Marcela; Cisternas,Marco; Neaman,Alexander; Salgado,Eduardo. |
| Soil erosion increases after building downward ridges along steep hillslopes, in particular during the first winter. This erosion decreases when trees grow, but runoff increases. This study presents results of erosion under five different treatments: (i) soil cover with native vegetation, (ii) bare downward ridges, (iii) downward ridges with six year-old avocado orchard, (iv) downward ridges with plant cover and (v) downward ridges covered with agroindustrial waste sludge. The results revealed 20 t ha-1 of soil erosion during the first year after ridges were built, while mitigation measures can reduce erosion in 90%. Adult orchard showed the largest runoff, which probably is due to the effect of a high and about constant soil moisture during irrigation... |
| Tipo: Journal article |
Palavras-chave: Soil erosion; Runoff; Agroindustrial waste sludge; Plant cover; Ridges along slope; Steep hillslope; Avocado orchards; Chile. |
| Ano: 2010 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202010000300010 |
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| Laínez,Dominique; Krarup,Christian. |
| Este estudio tuvo por objetivo caracterizar el comportamiento en pre y poscosecha de dos cultivares de melón reticulado tipo Oriental (Cucumis meló Grupo Cantalupensis), Emerald y Glamour, producidos bajo prácticas de cultivo habituales en Chile. Ambos cultivares presentaron un desarrollo vigoroso, sin problemas sanitarios y una alta producción de frutos. Los frutos del cv. Emerald desarrollaron una zona de abscisión peduncular y se separaron de la planta al madurar, presentaron tamaño medio (1,0 kg), forma ovalada, epidermis verde con reticulado fino y poco denso, y pulpa verde cremosa de con 10,3% como promedio de sólidos solubles totales (SST). En contraste, los frutos del cv. Glamour no desarrollaron una zona de abscisión peduncular y no se separaron... |
| Tipo: Journal article |
Palavras-chave: Cucumis meló; Manejo de poscosecha; Tecnología de la fruta. |
| Ano: 2008 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202008000100006 |
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| Silva,Daniel O; Meza,Francisco J; Varas,Eduardo. |
| There is increasing interest in meteorological information and its application to strategic planning at the farm as well as regional level. Although we have recently seen significant improvements to strengthen and enlarge networks of weather observations, their density is still insufficient to cover large extents at the desired spatial and temporal resolution. Climate scientists have developed and used mesoscale models to understand and predict future atmospheric conditions. These models represent a major contribution to objective weather forecasts throughout numerical simulations. They use global circulation outputs as boundary conditions and can be run in a nested manner so as to increase their spatial resolution. Because of this, we can obtain... |
| Tipo: Journal article |
Palavras-chave: Agroclimatological variables; Maipo river basin; MM5 data; MOS. |
| Ano: 2009 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202009000300004 |
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| Hernández,Adrián; Bórquez,Aliro; Alcaíno,Leonardo; Morales,Jorge; Dantagnan,Patricio; Saez,Patricio. |
| The effect of autoclaving on the nutrients' apparent digestibility coefficient (ADC), digestible protein and energy of pea seed meal (P. sativum) fed to Rainbow trout (O. mykiss) was examined. Two samples of the pea meal were autoclaved at 121°C and 1.1 atm for 5 min (5'APM) or 15 min (15'APM), respectively. A third sample, used as control, was not treated (RPM). One reference diet (Basal diet) and 3 experimental diets were elaborated and labelled based on autoclaving time applied to the ingredient (RPM, 5'APM and 15'APM). The four diets were assigned using a completely randomised design, with each treatment having three replicates. 12 tanks were stocked each with 15 trouts with an average weight of 235 ± 10.4 g. Faeces were collected over a 7-day period... |
| Tipo: Journal article |
Palavras-chave: Autoclaving; Apparent digestibility coefficient; Pea seed meal; Rainbow trout. |
| Ano: 2010 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202010000300003 |
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| Mancilla,Héctor; Quiroz,Karla; Arencibia,Ariel; Carrasco,Basilio; García-Gonzales,Rolando. |
| H. Mancilla, K. Quiroz, A. Arencibia, B. Carrasco, and R. García-Gonzales. 2013. In vitro culture of Luma chequen from vegetative buds. Cien. Inv. Agr. 40(3): 609-615. Luma chequen, a small tree or large shrub belonging to the Myrtaceae family, is endemic to South America and has medicinal, nutritional and ornamental potential. However, its native habitat is deteriorating gradually, and it is suffering from the effects of fragmentation that is being caused by the conversion of forest land to agricultural land and the natural expansion of monocultural plantations of exotic species, such as Pinus radiata. The purpose of this work is to develop an effective procedure for establishing in vitro cultures of the native Chilean species L. chequen. Aseptic nodal... |
| Tipo: Journal article |
Palavras-chave: Aseptic nodal segments; In vitro culture; Myrtaceae family; Organogenesis. |
| Ano: 2013 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202013000300013 |
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| Ducati,Camila; Neres,Marcela A; Castagnara,Deise D; Oliveira,Paulo S. R; Weirich,Daiane; da Silva,Gustavo M; Sunahara,Samantha M. M. |
| C. Ducati, M.A. Neres, D.D. Castagnara, P.S.R. Oliveira, D. Weirich, G.M. Silva, and S.M.M. Sunahara. 2015. Forage potential of oat Iapar 61 alone or in association with birdsfoot trefoil. Cien. Inv. Agr. 42(3): 341-351. The objective of this study was to evaluate the structural characteristics, dry matter production, residual mass, chemical composition and in vitro dry matter digestibility of Iapar 61 black oat (Avena strigosa cv Iapar 61) pasture, both in isolation and in association with birdsfoot trefoil (Lotus corniculatus L., cv. St. Gabriel), under different forms of management in three growth cycles. A randomized block design was used with split plots in time with four treatments: conventional tillage oats, oat tillage, oats associated with... |
| Tipo: Journal article |
Palavras-chave: Apical meristem; Crude protein; Dry matter production; Winter legume. |
| Ano: 2015 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202015000300003 |
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| Vera,Leonardo; Montalba,René; Vieli,Lorena; Jorquera,Emilio; González,Isabel. |
| L. Vera, R. Montalba, L. Vieli, E. Jorquera, and I González. 2015. Methodology for determining the suitability of land for the cultivation of highbush blueberry: a case study on a farm in southern Chile. Cien. Inv. Agr. 42(3): 353-364. The selection of good planting sites is critical for the success of blueberry plantations. The objective of the present study was to identify farm territorial units suitable for the establishment and management of highbush blueberry crops on a farm in southern Chile. A farm-level characterization was developed, and districts and sites were classified according to their receptive capacity. Numerical suitability valúes were subsequently obtained for each land unit identified on the farm. Four suitability categories were... |
| Tipo: Journal article |
Palavras-chave: Landscape management; Limiting variable; PH; Receptive capacity; Slope. |
| Ano: 2015 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202015000300004 |
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| Registros recuperados: 443 | |
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