Search Results - "altitud"

Steinernematidae y heterorhabditidae en áreas de producción papera en Cundinamarca y sur de Boyacá. by Parada Santamaria, J.C.

“…En dos altitudes dentro de los principales municipios productores de papa en Cundinamarca y cuatro de Boyacá, se explotaron suelos cultivados con papa, en rotación con pastoreo y bosque secundario y/o primario. …”
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Estrategias de control integrado de la pudrición parda de la fruta

“…En Colombia, el incremento en las áreas sembradas de cacao a partir del año 2000 originó la siembra del cultivo en altitudes superiores a los 800 m s. n. m., condición agroecológica que favorece las temperaturas cercanas a los 15 ºC durante la noche y que beneficia la presencia y multiplicación del microorganismo patógeno Phytophthora palmivora, causante de la pudrición parda de la fruta. …”
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Soil organic carbon in agricultural systems of six countries in East Africa – a literature review of status and carbon sequestration potential by Namirembe, Sara, Piikki, Kristin, Sommer, Rolf, Söderström, Mats, Tessema, Bezaye, Nyawira, Sylvia

“…Independent variables: • Annual rainfall (mm year-1), as semi-arid (<600), sub-humid (601-1200), moist sub-humid (1201-1500), or humid (>1500) • Temperature • Location, • Altitude - lowland (<1500 m above sea level (a.s.l.)) or highland (≥ 1500 m a.s.l.). • Soil characteristics – type, bulk density, texture • The time period after which changes in SOC were measured - short-term (<10 years), medium-term (10-25 years), and long-term (>25 years). • Soil depth: 0-30 cm, 0-50 cm, and 0-100 cm. …”
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Potato seed system intervention workshop report by Borus, D., Parker, M.

“…Potato is among the four crops in Kenya’s Big Four Agenda. It is grown at altitudes of 1,500 to 3,000 metres above sea level (m.a.s.l.) by an estimated 800,000 farmers on approx. 161,000 hectares. …”
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Taxonomic and Ecogeographic Predictors of Resistance Against Phthorimaea operculella Zeller in Wild Potato Tubers by Horgan, F.G., Portalanza, D., Pelletier, Y., Quiring, D.T.

“…There was no apparent relation between altitude of origin and tuber resistance. Ecogeographical information was weakly related to resistance in some potato species; minimum temperatures during the coldest months at collection sites were positively related to resistance in S. boliviense and S. medians. …”
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Candidate signatures of positive selection for environmental adaptation in indigenous African cattle: A review by Kambal, Sumaya, Tijjani, Abdulfatai, Ibrahim, Sabah A.E., Ahmed, Mohamed-Khair A., Mwacharo, Joram M., Hanotte, Olivier H.

“…We highlight some key candidate genome regions and genes of relevance to the challenges of living in extreme environments (high temperature, high altitude, high infectious disease prevalence). They include candidate genes involved in biological pathways relating to innate and adaptive immunity (e.g. …”
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Enhancing horticultural productivity, incomes and livelihoods through integrated management of aphid pests on vegetables in sub-Saharan Africa by Hanna, R., Fotso-Kaute, A., Kumar, P.L., Djomaha, E., Toukem, N., Dongmo, M., Doumtsop, A., Ramasamy, S., Abang, A., Ekesi, S., Mohamad, S., Bayissa, W.H., Singh, A.B., Houmgny, R., Weisser, W., Kenkenou, S., Ghogomu, T.R.

“…On cabbage and kale, the cabbage aphid and false turnip aphid were, respectively, most important in higher and lower altitudes. The cabbage aphid in Kenya was associated with both specialist and generalist natural enemies whereas in Cameroon the specialist parasitoid Diaeretiella rapae was absent. …”
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Participatory on-farm evaluation of new orange-fleshed sweetpotato varieties in Southern Ethiopia by Aragaw, A., Biazin, B., Gurmu, F., Anthony, R., Cherinet, M., Low, Jan W., Yeshitela, M., Girma, A., Feyissa, T.

“…There was a strong negative correlation between altitude and root yields, with the highest root yields being in areas 1,500–1,650 m above sea level. …”
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Anthropogenic events and responses to environmental stress are shaping the genomes of Ethiopian indigenous goats by Belay, Shumuye, Belay, Gurja, Nigussie, Helen, Ahbara, Abulgasim, Tijjani, Abdulfatai, Dessie, Tadelle, Mekuriaw, Getinet, Han, Jian-Lin, Mor, Siobhan M., Woldekiros, H.S., Dobney, Kieth, Lebrasseur, Ophelie, Hanotte, Olivier H., Mwacharo, Joram M.

“…FST, XP-EHH, and Hp analysis revealed signatures of selection in Ethiopian goats overlaying genes for thermo-sensitivity, oxidative stress response, high-altitude hypoxic adaptation, reproductive fitness, pathogen defence, immunity, pigmentation, DNA repair, modulation of renal function and integrated fluid and electrolyte homeostasis. …”
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Flood susceptibility and risk mapping of Kathmandu Valley Watershed, Nepal by Chaudhary, U., Shah, M. A. R., Shakya, B. M., Aryal, Anil

“…Comprehensive flood risk assessment is often constrained by a lack of appropriate data in high-altitude watersheds, particularly in developing countries like Nepal, where institutional capacities are limited for mapping and monitoring flood-prone communities. …”
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Milk somatic cell count, composition and yield of multi-breed dairy cattle in Ethiopia by Chernet, T.F., Okeyo Mwai, Ally, Meseret, Selam, Negussie, E., Mrode, Raphael A., Tarekegn, G.M., Edea, Z., Gebreyohanes, Gebregziabher, Ekine-Dzivenu, Chinyere C., Tera, A., Tessema, T.S.

“…Lactation stage, breed, parity, herd size and altitude significantly influenced most milk parameters, except fat content, which was unaffected by parity (p > 0.05). …”
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Distribution of wheat stem rust (Puccinia graminis f. sp. tritici) and its association with biophysical factors and cultivation practices in Horro Guduru Wollega highlands, Western... by Abdissa, Tola, Fininsa, Chemeda, Abeyo, Bekele Geleta, Woldeab, Getaneh

“…Increased incidence (>50%) and severity (>5%) were strongly (P < 0.0001) associated with lower altitude (<= 2400 m), susceptible varieties, broadcast sowing method, fungicide-unsprayed wheat fields, and wheat growth at flowering and milking stages. …”
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Determinants of land use change: evidence from a community study in Honduras by Bergeron, Gilles, Pender, John L.

“…Econometric analysis suggests that land use intensification was influenced by plot level variables (especially altitude, slope, distance to a road and tenure), farm level variables (human capital, farm size, and ownership of productive implements), and by community variables (especially presence of technical assistance programs).To the extent these results are found to be more broadly representative, they suggest that there may be good potential to promote income-enhancing horticultural development through investments in technical assistance and education in similar communities elsewhere in Honduras. …”
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Local-scale bat guild activity differs with rice growth stage at ground level in the Philippines by Sedlock, Jodi L., Stuart, Alexander M., Horgan, Finbarr G., Hadi, Buyung, Como Jacobson, Angela, Alviola, Phillip A., Alvarez, James D. V.

“…High-flying insectivorous bats, as wide-ranging generalist insectivores, are valuable consumers of high-altitude migrating pests of rice in Southeast Asia. …”
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Market segmentation for peppers and tomatoes in Eastern and Western Africa by Ambali, Mwasilwa, Zohoungbogbo, Herbaud, Ayenan, Mathieu, Kaki, Rodrigue, Eybishitz, Assaf, Barchenger, Derek, Schreinemachers, Pepijn

“…The findings indicate that tomato production in Western and Eastern Africa is distinguished by altitude, with Western Africa only on lowland cultivation below 300 meters and Eastern Africa on highland cultivation above 300 meters, necessitating region-specific disease resistance traits. …”
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Evaluation and mapping of snow characteristics using remote sensing data in Astore River Basin, Pakistan by Khan, Ihsan Ullah, Iqbal, M., Ali, Zeshan, Arshed, A. B., Wang, M., Adnan, R. M.

“…The snowmelt runoff generated from high-altitude areas of the UIB provides inflow into the Indus river system that boosts the water supply. …”
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Single-step genome-wide association study of milk somatic cell scores across multi-cattle breeds in Ethiopia by Chernet, T.F., Tarekegn, G.M., Okeyo Mwai, Ally, Meseret, Selam, Mrode, Raphael A., Negussie, E., Bedada, Z.E., Gebreyohanes, Gebregziabher, Ekine-Dzivenu, Chinyere C., Tera, A., Tessema, T.S.

“…A single-step genome-wide association study (ssGWAS) was conducted, accounting for fixed effects of parity, genomic breed composition, altitude, and lactation stage, and random effects of herd-year-calving-season and permanent environment. …”
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Spatial-temporal analysis of the risk of Rift Valley fever in Kenya by Bett, Bernard K., Omolo, Abisalom, Notenbaert, An Maria Omer, Kemp, Stephen J.

“…Predictors investigated include: monthly precipitation (minimum, maximum and total), normalized difference vegetation index, altitude, agro-ecological zone, presence of game, livestock and human population densities, the number of times a division has had an outbreak before and time interval in months between successive outbreaks (used as a proxy for immunity). …”
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Effect of breed and season on production and response to infections with gastro-intestinal nematode parasites in sheep in the highlands of Ethiopia by Rege, J.E.O., Tembely, S., Mukasa-Mugerwa, E., Sovani, S., Anindo, D.O., Lahlou-Kassi, A., Nagda, S.M., Baker, R.L.

“…The Menz lambs had a significantly higher (P>0.001) packed cell volume (PCV) than the Horro lambs at 3 and 12 months of age, possibly indicating a better adaptation of the Menz to a high altitude environment. The Menz lambs had significantly (P<0.001) lower cumulative mortality (37%) to 12 months of age than the Horro (68%), principally due to better adaptation of the Menz to the study environment and not due to resistance to GI nematode parasites. …”
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Do plot sizes affect the performance of GIS-based species distribution models? by Pandit, S., Hayward, A., Leeuw, Jan de, Kolasa, J.

“…Logistic regression-based models were used to predict the distributions of the four plant species based on empirical evidence of their relationship with eight environmental predictors: distance to river, slope, aspect, altitude, and four principle component axes derived using reflectance values from Aster images. …”
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