|
|
|
| Registros recuperados: 7.826 | |
|
|
| Pistorale,Susana M; Abbott,Liliana A; Andrés,Adriana. |
| Diez poblaciones naturalizadas de agropiro alargado (Thinopyrum ponticum) se evaluaron en un ensayo en bloques completamente aleatorizados, con tres repeticiones. Se analizaron, caracteres morfológicos y reproductivos por planta individual y se estimaron parámetros estadísticos y genéticos. Las comparaciones entre medias de las diez poblaciones, mediante la prueba de t, mostraron diferencias significativas (p < 0,001), lo que indica la gran variabilidad existente entre las poblaciones. Los resultados mostraron que los coeficientes de variación ambiental fueron altos para producción de total de semilla (69,24%), número de macollos (54,93%), número de espigas (48,50%) y producción de materia seca (49,01%), y fueron bajos para largo de espiga (19,11%) y... |
| Tipo: Journal article |
Palavras-chave: Agropiro alargado; Correlaciones fenotípicas; Heredabilidad en sentido amplio; Variabilidad genética. |
| Ano: 2008 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202008000300003 |
| |
|
|
| Bridi,Raquel; Lobato,Sergio; López-Alarcón,Camilo; Lissi,Eduardo. |
| In the present work, we studied the effect of the growing region (IV, Metropolitan or VI - VII regions), quality classification ("Varietal", "Reserva", and "Gran Reserva") and harvest year (2000-2012) on the total phenolic content and antioxidant capacity of thirty-six Chilean Cabernet Sauvignon red wine samples. The Folin-Ciocalteu (FC) and (Oxygen Radical Absorbance Capacity) ORAC methods, employing fluorescein and pyrogallol red as probes, were applied to establish the properties of the wine samples. The obtained results show a strong dependence at of the three indexes on the grape growing region, with higher values obtained in wines from the IV region. These results can be related to the climatic characteristics of this Region, which include dry... |
| Tipo: Journal article |
Palavras-chave: Cabernet Sauvignon; Chilean red wines; ORAC; Total phenolic content; Growing region; Quality classification; Harvest year. |
| Ano: 2014 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202014000300012 |
| |
|
| |
|
|
| dos Santos,Alexandre L; Mora,Freddy. |
| La producción porcina se considera un importante segmento de la agroindustria Brasileña, cuyo desarrollo depende en parte de la estrategia ambiental adoptada por las empresas. Se examinaron experimentos de tratamientos de residuos orgánicos en una agroindustria porcina localizada en el sur de Brasil. Los siguientes tipos de floculantes fueron considerados como cinco experimentos independientes: Tipo-1: hidróxido de calcio, Tipo-2: sulfato de aluminio + hidróxido de calcio, Tipo-3: hidróxido de calcio + dolomítico, Tipo-4: dolomítico y Tipo-5: sulfato de aluminio, con las siguientes dosis: 0,00-1,25-2,50-5,00-10,00-20,00 mL. Se analizaron los sólidos totales de la fracción sólida (gm³) en un estudio longitudinal. Un experimento paralelo se realizó para... |
| Tipo: Journal article |
Palavras-chave: Biofertilizante; Cerdos; EG; Floculantes; MLG; Residuos orgánicos; Seudo-verosimilitud. |
| Ano: 2007 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202007000100006 |
| |
|
|
| Díaz-José,Oscar; Aguilar-Ávila,Jorge; Rendón-Medel,Roberto; Santoyo-Cortés,V. Horacio. |
| O. Díaz-José, J. Aguilar-Ávila, R. Rendón-Medel, and V.H. Santoyo-Cortés. 2013. Current state of and perspectives on cocoa production in Mexico. Cien. Inv. Agr.40(2): 279-289. Cocoa is one of the principal agricultural and cultural resources of the humid Mexican tropics. At present, the cocoa system is facing an unprecedented production crisis in relation to several factors, including the presence of frosty pod rot (Moniliophthora roreri), plantation neglect and low farm profitability. The aim of this study was to formulate a medium-term plan for cocoa production in Mexico by constructing a Technology Roadmap (TRM). Using an econometric model, production statistics were analyzed for national and international data. Producers participated in 185 surveys,... |
| Tipo: Journal article |
Palavras-chave: Cocoa; Mexican cocoa; Frosty pod rot; Technology roadmap; Theobroma cacao. |
| Ano: 2013 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202013000200004 |
| |
|
|
| Olivas,Raquel; Díaz,Mónica; Bernabéu,Rodolfo. |
| R. Olivas, M Díaz, and R. Bernabéu. 2013. Structural Equation Modeling of lifestyles and consumer attitudes towards organic food by income: a Spanish case study. Cien. Inv. Agr. 40(2): 265-277. The organic food consumer in Spain is particularly conditioned by the premium prices of these foods and by their lack of availability in shops relative to conventional substitutes. In relation to the first determinant, several studies have revealed a direct relationship between maximum willingness to pay for these foods and consumer income. However, little is known about the influence of consumer attitudes, in relation to lifestyle, on these decisions. To address this issue, face-to-face surveys were conducted with 420 organic food consumers in the Madrid... |
| Tipo: Journal article |
Palavras-chave: Consumer behavior; Marketing strategy; Structural equation modeling. |
| Ano: 2013 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202013000200003 |
| |
|
| |
|
|
| Inostroza,Luis; Quezada,Celerino; Inostroza,Wladimir; Matus,Iván; Tapia,Maritza; del Pozo,Alejandro. |
| The seedling vigor of 80 barley recombinant chromosome substitution lines (RCSLs) was measured for selecting high seedling vigor genotypes. The RCSLs were derived from a cross between H. vulgare subsp. spontaneum and H. vulgare subsp. vulgare 'Harrington'. The work was carried out under greenhouse conditions during the summer of 2008. The experimental design was an alpha lattice with 3 replicates. In each replicate, 40 plants were established, distributed in eight polyethylene pots containing sand as substrate, which were fertilized an irrigated. The emergence of seedlings, number of leaves and shoots, dry matter of leaves, shoots and roots and leaf area of fully expanded leaves were measured. In addition, growth indices were calculated: emergence rate,... |
| Tipo: Journal article |
Palavras-chave: Plant growth analysis; Relative growth rate; Net assimilation rate; Allometric coefficient. |
| Ano: 2011 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202011000100013 |
| |
|
| |
|
|
| Silva,Aderbal M. de A; Bezerra,Leilson R; Rufino,Sara R. M; Filho,José M. Pereira; Freire,Juliana M; da Silva,Divan S; Oliveira,Ronaldo L; Bayão,Geraldo F. V. |
| For confined animals, performance is improved when their diet is supplemented with a mineral mixture and protein energy. This study evaluated the effect of dietary supplementation on feedlot sheep on native pasture. Two experiments were conducted in sequence, with the animals constrained in one and animals confined to pasture in the other. The experiments were conducted with 32 Santa Ines lambs, with average initial weights of 16.8 and 19.9 kg for the constrained and pasture studies, respectively. In both experiments, the animals were offered the following supplements: Supplement 1 = 200 g of the concentrate without mineral mixture; Supplement 2 = 200 g of the concentrate with mineral mixture + Mn + Zn; Supplement 3 = 300 g of the concentrate with mineral... |
| Tipo: Journal article |
Palavras-chave: Dry matter; Feed conversion; Manganese; Ovine; Zinc. |
| Ano: 2014 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202014000300001 |
| |
|
|
| Engler,Alejandra; del Pozo,Alejandro. |
| Cereal grain yields have increased worldwide during the 20th century as a consequence of plant breeding, improved cultural practices and intensive use of inputs. However, there is evidence that there are differences in yield pattern evolution across countries and cereals. The purpose of this study was to compare trends in the yields of the most commonly produced cereals in Chile, namely wheat, oat, barley, maize and rice, to identify similarities in trends across crops and to estimate long-term growth rates in the yields and their changes over time. Data for wheat, barley, oat, rice and maize yields between 1929 and 2009 were obtained from the Chilean Oficina de Estudios y Políticas Agrarias (ODEPA). A first-order autoregressive (AR1) model with trend was... |
| Tipo: Journal article |
Palavras-chave: Barley; Oat; Maize; Rice; Wheat; Yield progress. |
| Ano: 2013 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202013000100005 |
| |
|
| |
|
|
| Cruz-Crespo,Elia; Sumaya-Martínez,María T; Can-Chulim,Álvaro; Pineda-Pineda,Joel; Bugarín-Montoya,Rubén; Aguilar-Benítez,Gisela. |
| E. Cruz-Crespo, M.T. Sumaya-Martínez, Á. Can-Chulim, J. Pineda-Pineda, R. Bugarín-Montoya and G. Aguilar-Benítez. 2015. Quality, bioactive compounds, and antioxidant activity of serrano chili peppers cultivated in volcanic rock-vermicompost and nutrient solutions. Cien. Inv. Agr. 42(3): 375-384. The concentration of antioxidant compounds, the antioxidant activity, physical quality characteristics, and the yield of serrano chilies (Capsicum annuum L.) are affected by agricultural practices, such as the use of vermicompost in containers combined with chemical fertilizers, the investigations of which have focused on yield. A study was performed to determine whether vermicompost mixed with volcanic rock and the ionic composition of the nutrient solution affect... |
| Tipo: Journal article |
Palavras-chave: Ascorbic acid; Capsicum annuum; Phenols; Yields. |
| Ano: 2015 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202015000300006 |
| |
|
|
| Gallardo,María A; Pulido,Rubén; de la Barra,Rodrigo; Martínez,María E. |
| M.A. Gallardo, R. de la Barra, and M.E. Martínez. 2014. Pilot study for feeding preferences and grazing behavior in two breeds of sheep on a secondary succession of the Chiloé Archipelago. Cien. Inv. Agr. 41(2):249-254. A pilot study was undertaken to determine the pattern of feeding preferences and grazing behavior of the Chilota breed of sheep in the Chiloé Archipelago. First, eight Chilota and eight Suffolk Down ewes were faced with different numbers of plant species (offered only for 10 min), after fasting and after grazing a calafatal, a secondary succession dominated by shrubs. The experiment was repeated four times within a period of 22 d and included a 1-month pre-experimental period. Second, six Chilota and six Suffolk Down ewes, randomly selected... |
| Tipo: Journal article |
Palavras-chave: Chilota; Grazing behavior; Preferences. |
| Ano: 2014 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202014000200011 |
| |
|
|
| von Bennewitz,Eduardo; Fredes,Claudio; Losak,Tomas; Martínez,Carolina; Hlusek,Jaroslav. |
| Fruit size is a very important quality attribute in cherry trees. Appropriate canopy and crop load management are, therefore, required to obtain an adequate balance between the yield and fruit size. A study was carried out during the 2007-2008 season in the Maule Region of Chile to evaluate the effect of increasing levels of dormant pruning (Control, no removal; Soft pruning, 15% removal; Moderate pruning, 30% removal and Intense pruning, removal of 50% of the fruiting wood) on the fruit yield, quality (size, fruit weight, soluble solids and fruit firmness) and crop value of sweet cherries (Prunus avium L.) cv. 'Bing' on the dwarfing rootstock, 'Gisela 6'. Treatments at the 30 and 50% removal intensities had a strong effect on yield reduction (36.1% and... |
| Tipo: Journal article |
Palavras-chave: Crop load regulation; Dormant pruning; Fruit yield and quality; Prunus avium. |
| Ano: 2011 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202011000300003 |
| |
|
|
| Mantecón,Jorge D. |
| Soybean {Glycine max) is currently the most widely grown and rapidly expanding crop in Argentina, and brown spot caused by Septoria glycines is a major foliage disease that affects this crop. Triáis in the 2005 and 2006 growing seasons were undertaken using soybean (Glycine max) cv. Nidera A4800 RR. A randomized complete block design was used with four replicates. Two biological fungicides, based on Bacillus subtilis or B. pumilus, and four conventional fungicides, pyraclostrobin in combination with epoxiconazole (Opera 25 SC, BASF Argentina), azoxystrobin (Amistar 25 SC, Syngenta Argentina), trifloxystrobin in combination with cyproconazole (Sphere 267,5 EC, Bayer, Argentina), and tebuconazole (Folicur 25 EC, Bayer, Argentina), were evaluated. Fungicides... |
| Tipo: Journal article |
Palavras-chave: Bacillus; Chemical and biological control; Brown spot; Diseases; Fungicides; Soybean. |
| Ano: 2008 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202008000200011 |
| |
|
|
| Pantoja,Gabriel; Gómez,Miguel; Contreras,Claudio; Grimau,Lissette; Montenegro,Gloria. |
| Abstract Beekeeping, which involves honey production and pollination of agricultural crops, has become a significant production activity. Linking beekeeping with ecotourism brings greater value to the beekeeping sector, thereby attracting the development of apitourism. Multi-criteria decision analysis is a set of techniques developed through Geographic Information Systems (GIS) focused on spatial decision making, which can be used to link beekeeping and tourism for the development of priority sites for shared activity. This work is based on the definition and weighting of factors used for evaluation of apitourism suitability in Chile, considering the opinion of beekeepers and professionals associated with the sector. The result is a map of apitouristic... |
| Tipo: Journal article |
Palavras-chave: Beekeeping; Geographic information systems (GIS); Land-use suitability analysis; Melliferous plant; Multi-criteria decision analysis (MCDA); Tourism. |
| Ano: 2017 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202017000200139 |
| |
|
|
| Donoso,Guillermo; Cancino,José; Villar,Susana. |
| The contingent valuation method was employed to assess the benefts of recovering the Laguna Grande de San Pedro de La Paz in Chiles Bío-Bío region and to analyze the possible existence of an embedding effect. Our results indicate that there is not a perfect part-whole valuation effect and that there is an imperfect substitution relationship between the two analyzed projects. In addition, when assessing the joint construction project of a main sewer and a recreation park on the north hillside of the lagoon, we determined that households were willing to pay an average monthly amount of $6,114 for the associated beneft of the environmental improvement. This amount would contribute $ 358,977,396 per month to the project and a total value of $4,307,728,752.... |
| Tipo: Journal article |
Palavras-chave: Contingent valuation; Economic value; Embedding effect; Part-whole effect; Scope insensitivity. |
| Ano: 2010 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202010000100010 |
| |
|
| |
|
|
| Tello,Víctor; Díaz,Luis; Sánchez,Matías. |
| V. Tello, L. Díaz, and M. Sánchez. 2013. Side effects of the natural pesticide Spinosad (GF-120 Formulation) on Eretmocerus paulistus (Hymenoptera: Aphelinidae), a parasitoid of the whitefly Aleurothrixus floccosus (Hemiptera: Aleyrodidae), under laboratory conditions. Cien. Inv. Agr. 40(2):407-417. The side effects of the insecticide GF-120 NF 0.02 Naturalyte CB® were evaluated on adults of Eretmocerus paulistus Hempel, a parasitoid of Aleurothrixus floccosus (Maskell) in citrus orchards of northern Chile. LC50 and LC90 were determined by applying the insecticide using a Potter tower in decreasing doses from 0.96 to 0.1 mg a.i. L-1 (corresponding to 1% to 0.1% of the recommended dose, respectively). After 24 h of exposure, the results were fitted to a... |
| Tipo: Journal article |
Palavras-chave: Bioassays; Insect parasitoids; Natural pesticide; Residual effect; Side effects; Toxicity. |
| Ano: 2013 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202013000200015 |
| |
| Registros recuperados: 7.826 | |
|
|
|
