Search Results - "ONCE"

Persistence of Rift Valley fever virus in East Africa by Gachohi, John M., Hansen, F., Bett, Bernard K., Kitala, P.

“…Local persistence is determined by the length of time the virus remains in a mosquito breeding site once introduced. In the model, this is a function of the number of mosquitoes that emerge infected and their lifespan. …”
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Risk mapping for HPAI H5N1 in Africa - Improving surveillance for virulent bird flu: Final report and maps by Stevens, K.B., Costard, Solenne, Métras, Raphaëlle, Theuri, Wachira, Hendrickx, Saskia C.J., Pfeiffer, Dirk U.

“…Vigilance is key to limiting the disease but animal health personnel cannot monitor everywhere at once. This risk-mapping project was designed to help prioritize their efforts by showing in which places outbreaks are more likely to occur. …”
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Average daily gain of local pigs on rural and peri-urban smallholder farms in two districts of Western Kenya by Carter, Natalie A., Dewey, Catherine E., Mutua, Florence K., Lange, C.F.M. de, Grace, Delia

“…Assuming a uniform birth weight of 1 kg, ADG did not differ between pigs weighed once or twice. Overall, ADG was higher in peri-urban pigs (0.15 ± 0.058 kg/day) than rural pigs (0.11 ± 0.047 kg/day). …”
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The effect of protein supplement source or supply pattern on the intake, digestibility, rumen kinetics, nitrogen utilisation and growth of Ethiopian Menz sheep fed teff straw by Bonsi, M.L.K., Tuah, A.K., Osuji, P.O., Nsahlai, V.I., Umunna, N.N.

“…Measurements included roughage intake, digestibility, kinetics, rumen fermentation patterns, nitrogen utilisation, microbial protein supply and growth of sheeRate of degradation was highest (P<0.05) when sesbania was offered once a day compared with twice a day, while supplementation produced higher (P<0.05) liquid passage rates. …”
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Drought tolerant maize for Africa project by Shaw, Alison, Kristjanson, Patricia M.

“…Learning: Learning occurs between researchers and farmers, including women, about appropriate varieties in the first 1 or 2 seasons. Once varieties are identified, you ask farmers to experiment with 1?…”
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The impact of small scale irrigation on household food security: the case of Filtino and Godino Irrigation Schemes in Ada Liben District, East Shoa, Ethiopia by Tesfaye, A., Bogale, A., Namara, Regassa E.

“…Access to irrigation enabled the sample households to grow crops more than once a year; to insure increased and stable production, income and consumption; and improve their food security status. …”
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Integrated assessment of lateral flow, density effects and dispersion in aquifer storage and recovery by Ward, J.D., Simmons, C.T., Dillon, P.J., Pavelic, Paul

“…Firstly, the lack of completeness of field data sets in the literature must be rectified if we are to properly characterise mixed-convective flow processes in ASR operations. Once data are available, the dimensionless numbers can be used to identify suitable ASR sites and the desirable operational conditions that maximise recovery efficiencies.…”
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Farmer perceptions on climate change and variability in semi-arid Zimbabwe in relation to climatology evidence by Moyo M, Mvumi BM, Kunzekweguta, M., Mazvimavi K, Craufurd, Peter Q., Dorward, P.

“…The climate data show rainfall variability to be a normal characteristic of the study sites, with deviations from the climatic rainfall means (or the poor seasons) being cyclical and occurring once in every three seasons over the past 40 years. …”
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Harmonizing the agricultural biotechnology debate for the benefit of African farmers by Kelemu, Segenet, Mahuku, George S., Fregene, Martin A., Pachico, Douglas H., Johnson, Nancy L., Calvert, Lee A., Rao, Idupulapati M., Buruchara, Robin Arani, Amede, Tilahun, Kimani, P.M., Kirkby, Roger A., Kaaria, Susan K., Ampofo, James Kwasi O.

“…The intense debate over agricultural biotechnology is at once fascinating, confusing and disappointing. It is complicated by issues of ethical, moral, socio-economic, political, philosophical and scientific import. …”
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Relative palatability and seasonal agronomic performance of selected pasture legumes for species mixtures in dry-subhumid West Africa by Peters, Michael, Tarawali, Shirley A., Schultze-Kraft, Rainer

“…A positive relationship was established between the ability to retain green leaves in the dry season and palatability. Once established, the two C. brasilianum accessions out-performed the other legumes in their ability to stay green and retain leaves in the dry season; related to the ability to retain green leaves under drought conditions, C. brasilianum ILRI 155 was among the most palatable legumes in the dry season. …”
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Structure and composition of the white grub complex (Coleoptera: Scarabaeidae) in agroecological systems of Northern Cauca, Colombia by Pardo Locarno, L.C., Montoya Lerma, J., Bellotti, Anthony C., Schoonhoven, Aart van

“…Each locality was visited once per month and 10 samples per plot were collected on each occasion, with each sample from a quadrants 1 m2 by 15 cm deep, during 1999-2000. …”
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Climate change mitigation policies and poverty in developing countries by Hussein Z, Hertel, Thomas W., Golub A

“…We find that the Annex-I-only policy is poverty friendly, since it enhances the competitiveness of non-Annex countries—particularly in agricultural production. However, once forest carbon sequestration incentives in the non-Annex regions are added to the policy package, the overall effect is to raise poverty in the majority of our sample countries. …”
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Partnerships do improve smallholder livestock systems: Experience from Limpopo and North West provinces in South Africa by Motiang, M.D., Matjuda, L.E., Nengovhela, B.N., Clark, R.

“…Farmers were subsequently organised into teams, which meet once in 30 days to identify needs, set objectives, take actions with support from the FST and report every 90 days to measure progress. …”
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Volatile fragrances associated with flowers mediate host plant alternation of a polyphagous mirid bug by Pan, Hongsheng, Lu, Yanhui, Xiu, Chunli, Geng, Huihui, Cai, Xiaoming, Sun, Xiaoling, Zhang, Yongjun, Williams, Livy, Wyckhuys, Kris A.G.

“…Our results suggest that these four fragrant volatiles, which are emitted in greater amounts once plants begin to flower, mediate A. lucorum’s preference to flowering host plants. …”
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Using GIS techniques to aid in predicting a plant virus in beans by Klass, J, Leclerc, Gregoire, Morales, Francisco José, Wellens, J

“…BGMV is a geminivirus affecting beans (Phaseolus vulgaris) and is transmitted by a vector, the sweet potato whitefly (Bemisia tabaci). Once a plant is infected by the virus yield losses, at varying locations, can range from 40% to 100%. …”
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Uso del termometro infrarrojo para la seleccion por tolerancia a sequia en Phaseolus vulgaris L. by Kretchmer, PJ, Laing, Douglas R., Zuluaga, S

“…Certain materials, mainly Type III, had a higher degree of flower abscission under drought conditions but showed a rapid yield recovery due to pod setting from secondary flowers once the stress was suspended. The date of physiological maturity was considerably delayed on dry plots with these late-maturing var. …”
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Effects of salinity and drought on early seedling growth and survival of Artemisia herba-alba by Louhaichi, Mounir, Tarasoff C, Al-Homsh H, Hassan, S., Ates, S., Pyker TG

“…A threshold for survival of Artemisia herba-alba to cumulative salt concentrations above 20 g salt per kg soil was recorded. Once salinity concentrations passed the threshold, survival decreased dramatically from 80% at 30 g salt per kg soil to 60% at 70 g salt per kg soil. …”
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Soil and water conservation on Central American hillsides: if more technologies is the answer, what is the question? by Hellin, Jonathan, López Ridaura, Santiago

“…There is a need to focus less on capturing soil once it has been eroded, via the use of cross-slope soil conservation practices, and more on improving soil quality of the soil that remains through improved soil cover. …”
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Preempting plantparasitic nematode losses on banana in Africa: which species do we target? by Coyne, Danny L.

“…Although this belief may once have been accurate in Africa, and in some circumstances remains relevant, recent surveys have shown an increasing incidence of Pratylenchus coffeae, particularly in West Africa where it can be the most important species. …”
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Evolución del área y el rendimiento de soja en Entre Ríos y Santa Fe, con énfasis en el cultivo de segunda, entre 2010 y 2021 by Santos, Diego Jose, Enrico, Juan Martin

“…El objetivo de este trabajo es analizar y presentar en forma gráfica lo acontecido con el área y rendimiento de soja durante los últimos once años, haciendo énfasis en soja de segunda, tanto a escala nacional, como provincial y departamental, en las Provincias de Santa Fe y Entre Ríos. …”
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