Search Results - "Peruvian"

Lead in agricultural soils and cultivated pastures irrigated with river water contaminated by mining activity by Orellana, E.P., Custodio, M., Bastos, C., Cuadrado, W.

“…The results showed lead concentrations in soil in the range of environmental quality standards for soils according to Peruvian regulations. In soil with L. x hybridum and M. sativa the average content of lead was 57.17 ± 6.29 mg.kg-1 and 57.19 ± 8.99 mg.kg-1; in aerial tissues were 1.17 ± 0.69 mg.kg-1 and 1.62 ± 0.68 mg.kg-1 respectively. …”
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Identification of Elite Potato Clones with Resistance to Late Blight Through Participatory Varietal Selection in Peru by Gastelo, M., Burgos, G., Bastos, C., Perez, J.M., Otiniano, R., Cabrera, H., Ccanto, R., Scurrah, M.M., Felde, T. zum

“…During 2016–2017, 36 clones previously selected for high levels of resistance to late blight from population B developed by the International Potato Center, and three varieties used as controls (INIA 302 Amarilis moderately resistant, INIA303 Canchan and Yungay susceptible to late blight), were evaluated in five Peruvian locations. At harvest, five clones were selected based on (i) evaluations made by farmers through Participatory Varietal Selection, (ii) analysis of mixed models and Best Linear Unbiased Predictors for tuber yield, (iii) low glycoalkaloid content in tubers, and (iv) good organoleptic quality. …”
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Hiding in Plain Sight: How a Fallow Forestry Supply Chain Remains Illegitimate in the Eyes of the State by Sears, R.R., Cronkleton, P., Miranda Ruiz, M., Pérez Ojeda del Arco, M.

“…We evaluate the process of formalization of a thriving and adaptive existing supply chain for small-dimension lumber originating in the fallows of smallholder farmers in the Peruvian Amazon. Through field research over three years based in semi-structured interviews with diverse actors in the Amazon, we found that the supply chain for fallow timber is driven entirely by informal and some illegal transactions. …”
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Embedding circularity into the transition towards sustainable agroforestry systems in Peru by Parodi, Alejandro, Villamonte-Cuneo, Gianfranco, Loboguerrero Rodriguez, Ana María, Martínez Barón, Deissy, Vázquez-Rowe, Ian

“…The analysis was concentrated in four Peruvian regions and the most populous city in each of them. …”
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High public good values for ecosystem service attributes of on-farm quinoa diversity conservation in Peru by Drucker, Adam G, Pradel, Willy, Scott, Craig, Elmes, Sarah, Arpazi Valero, Kleny G., Zander, Kerstin K.

“…With a view to determining the general public’s willingness to pay (WTP) for such conservation, we organised interviews with 491 adult Peruvian residents in three regions a stated preference choice experiment (CE) to elicit the value they place on crop genetic resources conservation, using quinoa cultivation as a case study. …”
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Native arbuscular mycorrhizal fungi promote Plukenetia volubilis growth and decrease the infection levels of Meloidogyne incognita by Corazon-Guivin, M.A., del Aguila, S.R., Correa, R.X., Cordova-Sinarahua, D., Maia, L.C., Alves da Silva, D.K., da Silva, G.A., Lopez-Garcia, A., Coyne, D., Oehl, F.

“…The purpose of this research was to investigate the potential effects of two recently described species of AMF (Nanoglomus plukenetiae and Rhizoglomus variabile) native to the Peruvian Amazon for improving the plant growth of Plukenetia volubilis (inka nut or sacha inchi) and protecting the roots against soil pathogens. …”
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Incentives for agroecological transition in Ucayali, Peru: Resilient and inclusive systems by Blanco Garcia, Maria Alejandra, Araujo De Lima, Silvia, Mosquera Escobar, Leslie Estefany, Ivanova, Yovita, Sanchez Choy Sanchez, Jose Gerardo, Varon Molina, Adriana Patricia, Marulanda Duran, Luis Alejandro, Mockshell, Jonathan

“…The Peruvian Amazon, one of the most biodiverse regions in the world, faces numerous interconnected challenges, including biodiversity loss and soil degradation. …”
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Why policy reforms fail to improve logging practices: the role of governance and norms in Peru by Smith, J., Colan, V., Sabogal, C., Snook, Laura K.

“…Poor logging practices continued under the new law because of governance failures. The Peruvian experience shows that changing laws radically is often easier than avoiding governance failures in implementation. …”
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El manejo forestal en la Amazonia Baja del Peru: diagnostico e implicaciones para la adopcion de buenas practicas by Colan, V., Sabogal, C., Snook, Laura K., Boscolo, M., Smith, J., Galvan, O.

“…This research was part of a tri-national project intended to determine the main factors constraining or favoring the adoption of sustinable forest management practices in the Brazilian, Bolivian and Peruvian Amazon. The paper describes the logging practices followed by timber extractors in Peru's Amazon lowland under the conditions of the old forest law, revealing differences among types of extractors. …”
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Characterization of Peatland Soils from the High Andes through 13C Nuclear Magnetic Resonance Spectroscopy by Segnini, A., Souza, A.A. de, Novotny, E.H., Milori, D.M.B.P., Silva, W.T.L. da, Bonagamba, T.J., Posadas, A., Quiróz, R.

“…Whole soil samples from Peruvian bofedales (highland peatlands), located at an average altitude of 3881 m above sea level, were analyzed through 13C solid-state nuclear magnetic resonance (13C SSNMR) spectroscopy. …”
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Ex-post analysis of landraces sympatric to a commercial variety in the center of origin of the potato failed to detect gene flow by Ghislain, M., Montenegro, J.D., Juarez, H., Herrera, M.R.

“…We sampled the landrace germplasm of 1,771 leaf samples comprising more than 400 different landraces from three regions where 'Yungay' and landraces have coexisted for 15–25 years in the Peruvian Andes. Simple sequence repeat (SSR) markers were used to identify putative hybrids based on allele sharing with those of 'Yungay'. …”
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Participatory development projects in the Andes - looking for empowerment with Q-Methodology by Zuger Caceres, Regula

“…Therefore people in several different places in the Peruvian Andes are assessed with Q-Methodology before and after intervention of two different types of projects and changes shall be tracked. …”
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RNA silencing-mediated resistance to a crinivirus (Closteroviridae) in cultivated sweetpotato (Ipomoea batatas L.) and development of sweetpotato virus disease following co-infecti... by Kreuze, Jan F., Klein, I.S., Ghislain, M., Valkonen, J.P.T., Untiveros, M., Cuéllar, Wilmer Jose, Lajo, G., Cipriani, P.

“…Because no sources of true resistance to SPCSV are available in sweetpotato germplasm, a pathogen-derived transgenic resistance strategy was tested as an alternative solution in this study. A Peruvian sweetpotato landrace 'Huachano' was transformed with an intronspliced hairpin construct targeting the replicase encoding sequences of SPCSV and SPFMV using an improved genetic transformation procedure with reproducible efficiency. …”
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The Nutritional Contribution of Potato Varietal Diversity in Andean Food Systems: a Case Study by Haan, Stef de, Burgos, G., Liria, Reyna, Rodríguez, F., Creed-Kanashiro, Hilary M., Bonierbale, Merideth W.

“…Most floury landraces contain higher concentrations of protein and iron compared to the reference value reported in the 2009 Peruvian food composition table for a boiled and peeled floury landrace. …”
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Compuestos bioactivos y actividad antioxidante de semillas de quinua peruana (Chenopodium quinoa W.) by Valencia, Zanhy, Cámara, Fernando, Ccapa Ramírez, Karina, Catacora, Policarpio, Quispe Jacobo, Fredy Enrique

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Suri/Huacaya phenotype inheritance in alpaca (Vicugna pacos) by Renieri, Carlo, Valbonesi, Alessandro, Antonini, M., La Manna, Vincenzo, Huanca Mamani, Teodosio, Apaza, Nolberto, Presciuttini, Silvano, Asparrin, M.

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Exploration of the production of three Thiodiketopiperazines by an endophytic fungal strain of Cophinforma mamane by Pacheco Tapia, Romina, Ortíz, Sergio, Jargeat, Patricia, Amasifuen Guerra, Carlos Alberto, Vansteelandt, Marieke, Haddad, Mohamed

“…In this study, we focused on the production of 3 thiodiketopiperazines (TDKPs) botryosulfuranols A−C produced by an endophytic strain of Cophinforma mamane isolated from the leaves of Bixa orellana L collected in the Peruvian Amazon. We studied the time-course production of botryosulfuranols A−C during 28 days and evaluated the variations in the production of secondary metabolites, including the TDKPs, produced by C. mamane in response to different culture media, light versus dark conditions and different incubation times. …”
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Avances de la investigación realizada en el Perú sobre los efectos de la salinidad en la producción de la caña de azúcar [Saccharum officinarum, suelos]. by Valdivia V, S.

“…All the experiments were carried out with cultivar H32-8560 under field conditions (clime extremely arid) and on alluvial soils of the Peruvian northern coast. The results indicate that, in order to obtain a good sprouting of sugarcane (better than 85 percent), salinity must be less than 5 mmhos/cm. …”
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Herencia de la reacción a roya del tallo y roya de las glumas en los cruces recíprocos de los trigos 'Reward-H44-Rhodesian C.12273' y 'Barleta Benvenuto', en condiciones de la Sier... by Villanueva Novoa, R., Calderón Pérez, G.

“…‘Reward-H44-Rhodesian C. 12273’ is a Peruvian wheat awnleted and resistant to stem and stripe rust. …”
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Disentangling farmers' preferences for conditional incentives to upscale biodiversity-friendly agroforestry in the Amazon by Montoya-Zumaeta, Javier G, Fiestas-Flores, Jerico, Gutiérrez, Lech J., Rojas, Eduardo, Orozco Aguilar, Luis, Ladd, Brenton

“…We firstly conducted a discrete choice experiment (DCE) over a sample comprised by 223 cacao farmers from the province Padre Abad in the Peruvian Amazon to gain insights into their preferences for four attributes of a proposed biodiversity-oriented agroforestry- Payment for Ecosystem Services (PES) scheme: (1) requirement for tree canopy cover in enrolled plots, (2) modalities for a biodiversity connectivity bonus, (3) farmers' participation in monitoring, and (4) the compensatory cash amount. …”
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