Resultados de búsqueda - "Savannah"

Experiencia agrosavia en Sistemas Silvopastoriles Trópico Bajo por Roncallo Fandiño, Belisario Antonio, Criollo Campos, Paola Jimena, Bonilla Buitrago, Ruth Rebeca

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Estado actual de la cacaocultura: una revisión de sus principales limitantes por Antolinez Sandoval, Eduar Yovany, Almanza Merchán, Pedro José, Barona Rodríguez, Ayda Fernanda, Polanco Díaz, Eliseo, Serrano Cely, Pablo Antonio

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Caracterisation des savanes d`une region des Llanos Orientaux de Colombie : Memoire de fin d`etudes, Cali, Colombie du 26 juin 1994 au 7 novembre 1994 por Grollier, C

“…These big expanses of savannahs present a huge potential for extensive bovine breeding. …”
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A new Leptospiral serovar in the Tarassovi serogroup from Colombia por Aycardi B., Eduardo R., Myers, D.M., Torres, Blanca

“…A strain of Leptospira isolated from the kidney tissue of a "chucha" (Caluromys philander), a common opossum of the eastern savannahs of Colombia, proved to be a new serovar in the Tarassovi group. …”
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Fine‐scale spatial genetic structure, mating, and gene dispersal patterns in Parkia biglobosa populations with different levels of habitat fragmentation por Lompo, Djingdia, Vinceti, Barbara, Konrad, Heino, Duminil, Jérôme, Geburek, Thomas

“…West African Sudanian savannahs are being fragmented and degraded, partly due to expansion of crop cultivation and monocultures that reduce tree density and may impact pollinators. …”
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Lowering environmental costs of oil-palm expansion in Colombia por García Ulloa, J., Sloan, S., Pacheco, P., Ghazoul, J., Koh, L.P.

“…We demonstrate that the impacts of oil‐palm expansion (e.g., deforestation, conversion of natural savannahs) would be minimized by establishing new plantations on pasture lands, given the low environmental value and economic utility, and the high agricultural potential of this land use. …”
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Response to selection for grain yield and correlated response for grain size and earliness in cowpea based on early generation testing por Padi, Francis K

“…Large grain size and earliness to flowering are traits critical to cowpea adoption in the West African savannahs. This study reports on the correlated response to selection in these two traits in the two populations in which selections were made primarily for grain yield potential. …”
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Tillage systems for the West African semiarid tropics por Hulugalle, N.R., Maurya, P.R.

“…The West African Semi-Arid Tropics (WASAT) is characterized by a monomodal rainfall pattern, and based on the amount of annual rainfall it can be divided into three ecologies: Sahel, Sudan and Northern Guinea savannahs. The major soil groups of the WASAT are Alfisols, Inceptisols and Entisols and Vertisols, with the former three predominating. …”
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Ecosystem-Based Approaches to Bioenergy and the Need for Regenerative Supply Options for Africa por Duguma, L., Kamwilu, E., Minang, Peter A., Nzyoka, J., Muthee, K.

“…Our analysis showed that restoring sparsely vegetated areas and degraded forest and savannahs, promotion of agroforestry in degraded agricultural lands, and use of agricultural residues could generate close to 71 billion gigajoules (GJ) of energy and provide sufficient energy for about 2.5 billion people if implemented in all potential areas identified. …”
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Cowpea leaf width correlates with above ground biomass across diverse environments por Digrado, A., González Escobar, E., Owston, N., Page, R., Mohammed, S.B., Umar, M.L., Boukar, O., Ainsworth, Elizabeth A., Carmo-Silva, Elizabete

“…Walp.) yields within the dry savannahs of Sub-Saharan Africa are low. Given the contribution of cowpea to food security in this region, it is essential that high-yielding varieties are developed to improve crop productivity in a sustainable manner. …”
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Two rapid appraisals of FAO-56 crop coefficients for semiarid natural vegetation of the northern Ethiopian highlands por Descheemaeker, Katrien K., Raes, Dirk, Allen, R., Nyssen, Jan, Poesen, J., Muys, B., Haile, M., Deckers, J.

“…Using this relation, crop coefficients can be easily derived for semiarid shrub savannahs in similar environments and used for the calculation of evapotranspiration.…”
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Approximating soil organic carbon stock in the Eastern Plains of Colombia por Rainford, Shauna-kay, Martin López, Javier Mauricio, Silva, Mayesse Aparecida da

“…In Colombia, the rise of agricultural and pastureland expansion continues to exert increasing pressure on the structure and ecological processes of savannahs in the Eastern Plains. However, the effect of land use change on soil properties is often unknown due to poor access to remote areas. …”
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Genetic conservation in Parkia biglobosa (Fabaceae: Mimosoideae) - what do we know? por Lompo, D.J.-P., Vinceti, B., Gaisberger, H., Konrad, H., Duminil, J., Ouédraogo, M., Sina, S., Geburek, T.

“…The medicinal and food tree species Parkia biglobosa (Faba-ceae: Mimosoideae) is widespread in the Sudanian savannahs of sub-Saharan Africa, where it has a strong socio-cultural and economic importance. …”
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Marsvins naturliga miljö och beteende por Melin, Ingrid

“…The wild guinea pigs (Cavia aperea) are native to the South African grasslands and savannahs where they live in small family groups often lasting their whole life. …”
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Spatial Niche Expansion at Multiple Habitat Scales of a Tropical Freshwater Turtle in the Absence of a Potential Competitor por Petrozzi, F., Ajong, S.N., Pacini, N., Dendi, D., Bi, S.G., Fa, J.E., Luiselli, L.

“…Pelusios castaneus is a widespread species across West-central African savannahs and open forests, whereas P. cupulatta is endemic to the Upper Guinean forest region in West Africa. …”
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Ghana Africa Research in Sustainable Intensification for the Next Generation (Africa RISING) Baseline Evaluation Survey por International Food Policy Research Institute

“…In particular, they are subject to a seasonal cycle of food insecurity of three to seven months for cereals (i.e., maize, millet and sorghum) and four to seven months for legumes (i.e., groundnuts, cowpeas, and soybeans). These crops in the savannahs are often produced in a continuous monoculture, steadily depleting soil natural resources and causing the yields per unit area to fall to very low levels. …”
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Demonstrating the benefit of agricultural biotechnology in developing countries by bridging the public and private sectors por Itam, Michael O., Iohannes, Sessen D., Albertsen, Marc, Andrade, Maria, Bor, Gilbert arap, Atta-Krah, Kwesi, Bertram, Robert, Danquah, Eric, Horvath, Diana M., Jones, Todd, Mugehu, Edith, Okwuonu, Ihuoma, Ooko-Ombaka, Amandla, Roberts, Richard J., Slamet-Loedin, Inez, Tripathi, Leena, Ubi, Benjamin Ewa, Varshney, Rajeev K., Venturi, Vittorio, Wagaba, Henry, Zeigler, Robert, Creasey Krainer, Kate M.

“…Increased attention to soil health also bodes well for more-strategic public and private investments that could enhance the productivity of Africa’s acid savannahs while also helping to reduce pressure on more-fragile woodland and forest regions. …”
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Destructive harvesting of wild honey in Miombo woodlands affects keystone elements in the ecosystem por Schrotter, C., Duguma, L., Snook, Laura K., Loo, J., Alves, T., Sousa, C., Gratzer, G.

“…This can be an issue even in ecosystems like savannahs, where fire largely defines ecosystem structure. …”
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Effects of ALSinhibitor herbicides, crop sequence, and fertilization on natural soil suppressiveness to Striga hermonthica por Emechebe, A., Berner, D., Lagoke, S.T.O., Ahonsi, M.

“…Striga hermonthica remains one of the greatest biological threats to cereal production in the savannahs of sub-Saharan Africa. Control efforts at the International Institute of Tropical Agriculture (IITA), Nigeria, focus on developing integrated S. hermonthica management (ISM) options such as legume-cereal rotation, use of host–plant resistance, soil-based biological control exploiting enhancement of naturally occurring biotic soil suppressiveness, and use of acetolactate synthase (ALS)-inhibiting herbicides as host–crop seed treatments. …”
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Minimising the loss of biodiversity and ecosystem services in an intact landscape under risk of rapid agricultural development por Williams, Brooke A., Grantham, Hedley S., Watson, James E.M., Álvarez, Silvia J., Simmonds, Jeremy S., Rogéliz, Carlos A., Silva, Mayesse Aparecida da, Forero-Medina, Germán, Etter, Andrés, Nogales, Jonathan, Walschburger, Tomas, Hyman, Glenn G., Beyer, Hawthorne L.

“…We apply our framework to the globally significant savannahs of the Orinoquia (Colombia), which in a post-conflict era is under increased agricultural development pressure. …”
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