Resultados de búsqueda - Repsol~

Characteristics of speargrass (Imperata cylindrica) dominated fields in West Africa: crops, soil properties, farmer perceptions and management strategies por Chikoye, David, Manyong, Victor M., Ekeleme, F.

“…Most farmers used labour intensive control strategies to combat speargrass due to, among other reasons, lack of capital. Speargrass occurred in soils with a wide range of chemical properties and particle size distribution.…”
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Field Evaluation of Brazilian isolates of Neozygites foridana (Entomophthorales: Neozygitaceae) for the microbial control of cassava green mite in Benin, West Africa por Hountondji, F.C.C., Lomer, C., Hanna, R., Cherry, A., Dara, S.K.

“…Two Brazilian isolates and one Benin (indigenous) isolate of Neozygites floridana were released against the cassava green mite, Mononychellus tanajoa , in January 1999 in the Adjohoun district, Ouémé administrative region, Republic of Benin. Post-release monitoring conducted 8, 14, 22 and 36 weeks later showed very low mean infection rates on M. tanajoa by isolate (0.03-0.4%). …”
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Agricultural intensification escalates future conservation costs por Phelps, J., Carrasco, Luis Roman, Webb, E.L, Koh, L.P., Pascual, U.

“…We present a conceptual framework that depicts these relationships, supported by an illustrative model of the intensification of key crops in the Democratic Republic of Congo, a leading REDD+ country. A von Thünen land rent model is combined with geographic information systems mapping to demonstrate how agricultural intensification could influence future conservation costs. …”
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Effects of multi-stakeholder platforms on multi-stakeholder innovation networks: implications for research for development interventions targeting innovations at scale por Sartas, Murat, Schut, Marc, Hermans, F., Asten, Piet J.A. van, Leeuwis, Cees

“…This paper aims to provide evidence on the contribution of MSPs to innovation and scaling by focusing on three developing country cases in Burundi, Democratic Republic of Congo, and Rwanda. Through social network analysis and logistic models, the paper studies the changes in the characteristics of multi-stakeholder innovation networks targeted by MSPs and identifies factors that play significant roles in triggering these changes. …”
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Occurrence and distribution of cowpea damping-off and stem rot and associated fungi in Benin por Adandonon, A., Aveling, T.A.S., Tamo, Manuele

“…Sclerotium rolfsii was considered to be the main causal agent of cowpea damping-off and stem rot in the Republic of Benin due to its wide distribution, high incidence and predominance on plants with damping-off and stem rot symptoms.…”
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The African timber tree Entandrophragma congoense (Pierre ex De Wild.) A.Chev. is morphologically and genetically distinct from Entandrophragma angolense (Welw.) C.DC por Monthe, F.K., Duminil, J., Kasongo Yakusu, E., Beeckman, H., Bourland, N., Doucet, J.L., Sosef, M.S.M., Hardy, Olivier J.

“…This work highlights the power of microsatellite markers in resolving species boundaries.…”
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GeoFarmer: A monitoring and feedback system for agricultural development projects por Eitzinger, Anton, Cock, James H., Atzmanstorfer, Karl, Binder, Claudia R., Läderach, Peter R.D., Bonilla Findji, Osana, Bartling, Mona, Mwongera, Caroline, Zurita, Leo, Jarvis, Andy

“…ICT approaches in agriculture are, however, still out of the reach of many farmers. The reasons are lack of connectivity, missing capacity building and poor usability of ICT applications. …”
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Spatial distribution of and sampling plans for Mussidia nigrivenella (Lepidoptera: Pyralidae) on cultivated and wild host plants in Benin por Sétamou, M., Schulthess, F., Poehling, H., Borgemeister, C.

“…The spatial distribution of Mussidia nigrivenella Ragonot was studied in maize fields and on four major wild host plants in the Republic of Benin, West Africa. Maize ears were sampled at harvest in 1994 and 1995, and fruits of the wild host plants were collected monthly from January 1996 to December 1997 during the fruiting periods of the respective host species. …”
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Grasslands and Open Savannas of the Dry Chaco por Fernandez, Pedro David, Baumann, Mathias, Baldi, Germán, Banegas, Natalia Romina, Bravo, Sandra, Gasparri, Nestor Ignacio, Lucherini, Mauro, Marinaro, Sofia, Nanni, Ana Sofía, Nasca, Jose Andres, Tessi, Torcuato, Grau, Hector Ricardo

“…While currently the distribution of natural grassland and savanna area encompasses over 20,000 km2, historical records and spatial models indicate that natural grassland and savannas were more widespread in pre-European era. Two main reasons drove this reduction in natural grasslands and savannas: woody encroachment by fire suppression and overgrazing, and conversion to agriculture and implanted pastures. …”
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The genomic analysis of a wide peach germplasm collection revealed genetic relationships between European landraces and American ferals and landraces por Aballay, Maximiliano Martín, Ksouri, Najla, Valentini, Gabriel Hugo, Puebla, Andrea Fabiana, Gogorcena Aoiz, Yolanda, Sanchez, Gerardo

“…The advance of next generation sequencing (NGS) technologies allows the implementation of high-throughput genotyping at a reasonable cost. This open the possibility to learn more about phylogenetic relationships, genetic variability, and the development of new genetic markers for breeding purposes. …”
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Characterization and use in wheat breeding of leaf rust resistance genes from durable varieties por Dieguez, Maria Jose, Lopez, Micaela, Altieri, Emiliano, Pergolesi, María Fernanda, Dabove, Marisol Alicia, Cuyeu, Alba Romina, Justus, Nadia Alejandra, Kandus, Mariana Virginia, Ingala, Lorena Romina, Sacco, Francisco

“…In Argentina, it is one of the main reasons for variety replacement that becomes susceptible after large-scale use. …”
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Evaluación de estrategias de control químico de enfermedades en trigo por Alberione, Enrique Javier, Salines, Nicolas, Pozzi, Elizabeth Alicia

“…En la actualidad el empleo de variedades comerciales susceptibles principalmente a roya de la hoja o anaranjada -RH- (Puccinia triticina Erikss) y roya de la gluma o amarilla -RA- (Puccinia striiformis f. sp tritici Westend., 1854), es sinónimo de problemas a resolver. Un manejo práctico y habitual es el empleo de fungicidas de aplicación foliar. …”
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Diseñar el Estado. La gestión pública del diseño aplicada al microtractor “Chango" por Battista, Daniela Edurne, Justianovich, Sergio Hernan, Olavarría, Martín, Ocampo, Fernando David, D'amico, Juan Pablo, Hall, Marcos Fernando

“…El análisis aborda el interrogante sobre las formas en que el Estado puede guiar procesos de cambio tecnológico para resolver problemas estructurales como la producción sustentable de alimentos, sostenida por la agricultura familiar, campesina e indígena. …”
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Human–Sheldgeese conflict in agricultural landscapes: Effects of environmental and anthropogenic predictors on Sheldgeese distribution in the southern Pampa, Argentina por Pedrana, Julieta, Bernad, Lucía, Maceira, Nestor Oscar, Isacch, Juan Pablo

“…These birds were declared an “agriculture plage” by the government and this conflict with humans has been so far resolved with species persecution. We evaluate whether its current wintering distribution is shaped by anthropogenic disturbances or whether it can be better explained by differences in topography and preference for wetlands, or by landscape composition and configuration. …”
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Use of a biophysical simulation model (DairyMod) to represent tall fescue pasture growth in Argentina por Berger, Horacio, Machado, Claudio F., Agnusdei, Monica Graciela, Cullen, Brendan R.

“…Application of DairyMod simulated with reasonable accuracy the HMA of tall fescue pastures under a wide range of climatic and management conditions; however, the model tended to underestimate HMA where pastures grew under high N availability. …”
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Community‐based breeding programmes are a viable solution for Ethiopian small ruminant genetic improvement but require public and private investments por Haile, Aynalem, Gizaw, Solomon, Getachew, Tesfaye, Mueller, Joaquin Pablo, Amer, Peter, Rekik, Mourad, Rischkowsky, Barbara

“…Productivity per animal and flock offtake are both very low. Reasons attributed for the apparent low productivity are as follows: absence of appropriate breeding programmes, lack of technical capacity, inadequate and poor‐quality feeds, diseases leading to high lamb mortality, and underdeveloped markets in terms of infrastructure and information. …”
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Argentina’s local crop biotechnology developments: why have they not reached the market yet? por Lewi, Dalia Marcela, Vicien, Carmen

“…In this work, we analyze several reasons that could explain why local developments have not reached approvals for commercialization, highlighting aspects related to the lack of strategic vision in the institutions to focus resources on projects to develop biotechnological products. …”
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Two phase olive mill waste valorization. Hydrochar production and phenols extraction by hydrothermal carbonization por Gimenez, Marianela, Rodriguez, Manuel, Montoro, Laura, Sardella, Fabiana, Rodríguez Gutiérrez, Guillermo, Monetta, Pablo Miguel, Deiana, Cristina

“…Olive oil is one of the main products from the Central-Western Region of Argentine Republic, which is mostly obtained by continuous two-phase centrifugation systems. …”
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Comparative Genetic Mapping between Clementine, Pummelo and Sweet Orange and the Interspecicic Structure of the Clementine Genome por Ollitrault, Patrick, Terol, Javier, Chen, Chunxian, Federici, Claire T., Lotfy, Samia, Hippolyte, Isabelle, Ollitrault, Frederique, Berard, Aurelie, Chauveau, Aurelie, Cuenca, José, Costantino, Gilles, Kacar, Yildiz Aka, Mu, Lisa, García-Lor, Andrés, Curk, Franck, Froelicher, Yann, Aleza, Pablo, Boland, Anne, Billot, Claire, Navarro, Luis, Luro, Francois, Roose, Mikeal L., Gmitter Jr., Frederick G., Talón, Manuel, Brunel, Dominique

“…Comparative mapping with pummelo and sweet orange revealed that the linear order of markers was highly conserved. Reasonable inferences of most citrus genomes should be obtained by mapping next-generation sequencing data against the haploid reference genome sequence. …”
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Early arrival of predators controls Aphis spiraecola colonies in citrus clementines por Gómez-Marco, Francesc, Tena, Alejandro, Jaques, Josep A., Urbaneja, Alberto

“…A complex of predators preys on A. spiraecola colonies but does not result in satisfactory control. To disentangle the reasons for this failure, we investigated the effect of predators on A. spiraecola colonies and damage over a 3-year period. …”
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