Resultados de búsqueda - "Savannah"

Genetic diversity of Parkia biglobosa (African locust bean) and its implications for conservation strategies por Lompo, D.J.-P., Konrad, H., Duminil, J., Gaisberger, H., Vinceti, B., Ouédraogo, M., Geburek, T.

“…Parkia biglobosa is an African Savannah tree with a wide range from Senegal to Uganda between the latitudes 5 and 15° in the North of equator. …”
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Correlation of fruit fly (Diptera: Tephritidae) infestation of major mango cultivars in Borgou (Benin) with abiotic and biotic factors and assessment of damage por Vayssières, Jean-François, Korie, S., Ayegnon, D.

“…The seasonal increase of theB.invadenspopulation coincided with the fruiting period of the main mango cultivars in this NorthernGuinean savannah, but mango availability influenced the population of this new invasive species onlywhen the rains had arrived. …”
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Economic analysis of balanced nutrient management technologies for maize production in Kaduna state, Nigeria por Omadachi, U.O., Ahmed, B., Manyong, Victor M., Olukosi, J., Yusuf, O.

“…In Kaduna state of Nigeria (Northern Guinea Savannah), three improved maize-based technologies were tested in a series of farmer-managed field trials since 2000. …”
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Phylogeography of African locust bean (Parkia biglobosa) reveals genetic divergence and spatially structured populations in West and Central Africa por Lompo, D.J.-P., Vinceti, B., Konrad, H., Gaisberger, H., Geburek, T.

“…The evolutionary history of African savannah tree species is crucial for the management of their genetic resources. …”
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A participatory appraisal of Imperata management strategies for sustainable land use in the subhumid savanna of Nigeria por Kormawa, P.M., Ellis-Jones, J., Ibana, S., Chikoye, David, Schulz, S., Nielsen, O.K., Douthwaite, Boru, Udensi, U.E.

“…Increasing spread of Imperata in the sub-humid Savannah of Nigeria has had many neg- ative results threatening the sustainability of the natural resource base and livelihood of farmers. …”
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Förekomst av önskvärda beteenden och stereotypier i relation till utevistelse hos giraffer (Giraffa camelopardalis) på Borås djurpark por Zedén, Sarah

“…In the wild, giraffes spend most of their day foraging and thus are most commonly found on the savannah where there is plenty of greenery. They continuously move to meet their daily nutritional need and can move over up to 437 km2 . …”
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Is investment in Climate-Smart-agricultural practices the option for the future? Cost and benefit analysis evidence from Ghana por Karanja Ng'ang'a, Stanley, Miller, Vail, Girvetz, Evan Hartunian

“…On this basis, the present study undertook a detailed cost-benefit analysis (CBA) of seven CSA practices identified with smallholder farmers in the coastal savannah agro-ecological zone of Ghana. A total of 48 smallholder farmers that had adopted these practices were studied. …”
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Impact of foliar application of zinc and magnesium aminochelate on bean physiology and productivity in Ghana por Yeboah, Stephen, Asibuo, James, Oteng-Darko, Patricia, Adjei, Emmanuel Asamoah, Lamptey, Maxwell, Owusu Danquah, Eric, Waswa, Boaz Shaban, Butare, Louis

“…However, limited research has been undertaken to understand the response of beans to amino Zn and Mg foliar fertilizer application in Ghana. )is study was conducted to investigate the effect of zinc, magnesium, and combined zinc and magnesium foliar fertilizer application on two improved common bean (Phaseolus vulgaris L.) varieties locally referred to as Adoye and Nsroma in the forest (Fumesua) and forest-savannah transition (Akumadan) agro-ecological zones of Ghana during the 2018 and 2019 cropping seasons.)etreatments were arranged in split-plot design with the two improved common bean varieties as the main plot, and foliar fertilizer options (zinc, 200 g/ha; magnesium, 224 g/ha; combined zinc and magnesium, 100 g/ha Zn and 112 g/ha Mg) and water spray (control) as the subplot treatments. )e zinc and combined zinc and magnesium treatments had similar and significantly (P ≤ 0.05) higher plant height of 37.1 cm and 38.7 cm compared to the control and magnesium treatments. )e results also showed that chlorophyll content was approximately 15.6% higher in plants treated with zinc plus magnesium compared to the other treatments. …”
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Farm Rejuvenation-Induced Changes in Tree Spatial Pattern and Live Biomass Species of Cocoa Agroforests in Central Cameroon: Insights for Tree Conservation Incentives in Cocoa Land... por Numbisi, F.N., Alemagi, D., Degrande, A., Coillie, F. van

“…To assess the temporal changes in shade management, we surveyed an age gradient of “family farms” in cocoa agroforests created from forest (fCAFS) and savannah (sCAFS) land cover. We evaluated the temporal changes in farm structure, relative tree abundance, and live aboveground biomass of the major canopy strata. …”
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Genetic diversity, population structure and kinship relationships highlight the environmental influence on Uganda’s indigenous goat populations por Nantongo, Ziwena, Birungi, Josephine, Opiyo, S.O., Shirima, G., Mugerwa, S., Mutai, Collins, Kyalo, Martina, Munishi, L., Agaba, M., Mrode, Raphael A.

“…Population 2, which is 59% Mubende and 49% Small East African goats, is located along the Nile Delta in northwestern Uganda and around the Albertine region, a hot and humid savannah grassland. Population 3, comprising 78.4% Small East African and 21.1% Mubende goats, is found in northeastern to eastern Uganda, a hot and dry Commiphora woodlands. …”
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Remotely sensed spectral indicators of bird taxonomic, functional and phylogenetic diversity across Afrotropical urban and non-urban habitats por Awoyemi, A.G., Alabi, T.R., Ibanez-Alamo, J.D.

“…To do so, we sampled birds at 400 points equally distributed across eight Nigerian areas, two vegetation zones (rainforest vs savannah), and two habitats (urban vs non-urban), and extracted 29 indicators (mean and SD) at 50-m radius of each point (exact area of bird censuses). …”
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Mechanism of yield compensation in some accession of cowpea grown at different plant densities and environments por Odesina, I.S.

“…This study, which was carried out in 2020, was aimed at investigating the mechanism of yield compensation in some accessions of cowpea in two savannah agro-ecologies at Minjibir and Shika in Northern Nigeria. …”
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An assessment of integrated Striga hermonthica control and early adoption by farmers in Northern Nigeria por Ellis-Jones, J., Schulz, S., Douthwaite, Boru, Hussaini, M.A., Oyewole, BD, Olanrewaju, AS, White, R

“…Two sets of on-farm trials, each covering two years, were conducted in the northern Guinea savannah of Nigeria over the period 1999–2001, the objective being to compare integrated Striga hermonthica control measures (soybean or cowpea trap crops followed by maize resistant to Striga) with farmers' traditional cereal-based cropping systems. …”
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Effect of temperature on the life history parameters of noctuid lepidopteran stem borers, Busseola fusca and Sesamia calamistis por Khadioli, N., Tonnang, Henri E.Z., Ong'amo, G., Achia, Thomas, Kipchirchir, I., Kroschel, Jürgen, Le Ru, B.

“…The lower lower thermal threshold found for B. fusca than for S. calamistis and the higher upper thermal threshold found for S. calamistis than for B. fusca explain in part the observed distribution of both species in sub‐Saharan Africa with S. calamistis occurring in all the agro‐ecological zones but being usually more common than B. fusca in savannah lowland and B. fusca reported mainly from mid and high altitude areas.…”
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Combining ability and heterosis of elite drought-tolerant maize inbred lines evaluated in diverse environments of lowland tropics por Adebayo, M.A., Menkir, A., Blay, E., Gracen, V., Danquah, E.Y.

“…The hybrids were evaluated together with four checks across six environments in the rainforest and savannah agro-ecologies of Nigeria between 2011 and 2012. …”
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CERES-maize model for determining the optimum planting dates of early maturing maize varieties in northern Nigeria por Adnan, A.A., Jibrin, J. M., Kamara, A., Abdulrahman, B.L., Shaibu, A.S., Garba, I.I.

“…Field trials were carried out in the Sudan Savannah of Nigeria to assess the usefulness of CERES–maize crop model as a decision support tool for optimizing maize production through manipulation of plant dates. …”
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Soil variability and crop yield gaps in two village landscapes of Burkina Faso por Diarisso, Tidiane, Corbeels, Marc, Andrieu, Nadine, Djamen, Patrice, Douzet, Jean-Marie, Tittonell, Pablo Adrian

“…Low crop yields in the savannah zones of West Africa are commonly attributed to rainfall deficits and poor soil fertility. …”
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Ibera Wetlands: diversity hotspot, valid ecoregion or transitional area? Perspective from a faunistic jumping spiders revision (Araneae: Salticidae) por Rubio, Gonzalo Daniel, Nadal, María Florencia, Munevar Lozano, Ana Katerinne, Avalos, Gilberto, Perger, Robert

“…Patterns of species richness, composition and endemism in hygrophilous woodlands and savannah parklands in ten locations covering the Iberá Wetlands were analyzed. …”
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Las "Cigarrinhas dos canaviais" en Brasil. (IIIa Contribución). Aspectos generales del problema, con especial referencia a Mahanarva posticata en los Estados de Pernambuco y Alagoa... por Guagliumi, P.

“…M. fimbriolata is possibly spread throughout the country, attacking sugar-cane and many grasses, and ecologically belongs to what Myers called “savannah froghoppers”; but the second species, M. posticata, only recently was introduced to the Northeastern sugar-cane region in the States of Pernambuco and Alagoas and in this new environment it expanded itself and exploded as a major calamity of the sugar crop. …”
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El suelo como factor ecológico en el desarrollo de la vegetación en el centro-oeste del Brasil por Alvim, P. de T., Araujo, W. A.

“…In samples of the palm savannah and forest soils, the growth of beans was normal. …”
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