Resultados de búsqueda - Be*

Importation, releases, and establishment of Neochetina spp. (col., curculionidae) for the biological control of water hyacinth, Eichhomia crassipes CLil., Pontederiaceae), Benin, West Africa por Thielen, R., Ajuonu, O., Schade, V., Neuenschwander, Peter, Adite, A., Lomer, C.

“…Water hyacinth,Eichhornia crassipes (Martius) Solms-Laubach (Pontederiaceae) was first reported in Bénin in 1977 and about 10 years later became the major floating water weed in the south east, obstructing boat traffic and fisheries. …”
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Natural levels of fungal infections in grasshoppers in northern Benin por Shah, P., Godonou, I., Gbongboui, C., Lomer, C.

“…The infection of grasshoppers by naturally occurring, entomopathogenic fungi was monitored at two sites in Malanville, northern Benin, Africa. Grasshoppers were collected and recorded from the sites between June and December 1992 and all of them, barring the first instars, were incubated in ventilated cages. …”
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Breeding potatoes for developing countries using wild tuber bearing Solanum spp. and ploidy manipulations por Ortíz, R., Iwanaga, Masaru, Peloquin, S.J.

“…The use of ploidy manipulations in potato breeding has been successfully applied by breeders at the International Potato Center (CIP) as a tool for germplasm enhancement and for the introduction of desirable genes of wild species into the cultivated gene pool. …”
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Genetics analysis of apical dominance and improvement of suckering behaviour in plantain por Ortíz, R., Vuylsteke, D.R.

“…Increased frequency of the Ad gene and a commensurate improvement in the suckering behavior of the diploid populations may be achieved by phenotypic recurrent selection.…”
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Seed damaging field pests of cowpea (Vigna unguiculata) L.Walp.) in Benin: occurance and pest status por Dreyer, H., Baumgaertner, J.U., Tamo, Manuele

“…Seed damage assessment at harvest time showed that in 80% of 25 fields, planted between 1990 and 1992, PSBs were the most important pests. …”
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Virulence characteristics of a new race of the parasitic angiosperm, Sriga gesnerioides, from southern Benin on cowpea (Vigna unguiculata) por Lane, J.A., Moore, T.H., Cardwell, K., Singh, B., Bailey, M.

“…Striga gesnerioides from southern Benin is the fourth race of the parasite to be identified, and the first with virulence on variety B301. …”
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Priority setting in research for sustainable land use: the case of Adja Plateau, Benin por Koudokpon, V., Brouwers, J., Versteeg, M., Budelman, A.

“…The Projet Recherche Appliquée en Milieu Réel is situated on the Adja Plateau, Southwest Benin. The project is responsible for a FSR&D programme that aims at sustainable use of the so-calledTerres de barre. …”
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Varietal identification key of the cultivated yams (Dioscorea cayenensis / Dioscorea rotundata complex) of Benin republic por Dansi, A., Mignouna, Hodeba D., Zoundjihékpon, J., Sangare, A., Asiedu, Robert, Quinz, F.M.

“…To ease the varietal identification within each varietal group, a practical identification key was constructed and a general directory of the Benin Republic cultivated yams belonging to the complex dioscorea cayenensis/Dioscorea rotundata (guinea yams) was prepared.…”
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Simulation model of Prostephanus truncatus (Coleoptera: Bostrichidae) in rural maize stores in the Republic of Benin por Meikle, W.G., Holst, N., Scholz, D., Markham, R.H.

“…The overall phenology of the simulated beetle dynamics reflected that of field data, although the model output tended to overestimate beetle population growth during the season and overall density late in the season. …”
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Host associated strains within Ugandan populations of the whitefly Bemisia tabaci (Genn.), (Hom., Aleyrodidae) por Legg, James P.

“…Studies were undertaken to investigate host relationships of populations of Bemisiu tubuci taken from the major crop hosts in Uganda. …”
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Between season survival of the grasshopper pathogen Melarhizium flavoviride in the Sahel por Thomas, M.B., Gbongboui, C., Lomer, C.J.

“…A significant positive relationship was identified between the probability of mortality at the beginning of one season and the density of infected cadaver s present in the habitat at the end of the previous season. …”
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The effect of nitrogen on the growth and development of giant witchweed, Striga hermonthica Benth: effect on cultured germinated seedlings in host absence por Igbinnosa, I., Cardwell, K.F., Okonkwo, S.N.C.

“…For the first time in sterile nutrient media in the absence of the host plant, different forms and rates of nitrogen compounds were screened for their effect on S. hermonthica Benth. shoot development beyond seed germination. …”
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Competition between Gyranusoidea tebygi and Anagyrus mangicola, parasitoids of the mango mealybug, Rastrococcus invadens: interspecific host discrimination and larval competition por Bokonon-Ganta, A.H., Alphen, J.J.M. van, Neuenschwander, Peter

“…The competition between Gyranusoidea tebygi Noyes and Anagyrus mangicola Noyes (both Hymenoptera: Encyrtidae), exotic parasitoids of the mango mealybug, Rastrococcus invadens Williams (Homoptera: Pseudococcidae) was studied in the laboratory. …”
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The influence of postflowering pests on cowpea seed yield with particular reference to damage by Heteroptera in southern Benin por Dreyer, H., Baumgaertner, J.U.

“…Stage-specific survival rates of cowpea seeds were evaluated in fields planted during both cropping seasons of 1991 and 1992 in southern Benin using Manly's regression model. Considerable seed damage could be recognised in all seed growth stages and reflected the variable pest infestations during a cropping season. …”
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Population dynamics and life tables of the mango mealbug, Rastrococcus invadens Williams, and its introduced natural enemy Gyranusoidea tebygi Noyes in Benin por Boavida, C., Neuenschwander, Peter

“…The populations of the exotic encyrtid G. tebygi, introduced into Benin in 1988 for control of the pest, were synchronized with the host populations. …”
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Tracking indirect beneficiaries of complex development interventions in agriculture. por Okello, J.J.

Materias: “…beneficiaries…”
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Experience capitalization: Forget perfection! Practice helps writing better stories por Yilma, Mersha

“…I have been collecting data from the field and writing stories for more than 15 years. …”
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Experience capitalization: The end of a project is just the beginning por Tukundane, Nelson

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Implementing the Plant Treaty’s multilateral system of access and benefit-sharing in Rwanda: Background analysis, recommendations and draft legal text for consideration por Turamwishimiye, M.R., Gapusi, J.R.

“…The study analyzes options for implementing the Plant Treaty's multilateral system of access and benefit-sharing in Rwanda. The study includes an overview of a range of pre-existing Rwandan national policies and laws that are of potential relevance when developing a strategy for implementing the multilateral system, identifying complementarities and (in a few rare cases) conflicts between those policies and laws and Rwanda's commitments under the Plant Treaty. …”
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Genotyping by sequencing provides new insights into the diversity of Napier grass (Cenchrus purpureus) and reveals variation in genome-wide LD patterns between collections por Muktar, Meki S., Teshome, A., Hanson, Jean, Negawo, Alemayehu T., Habte, Ermias, Domelevo Entfellner, Jean-Baka, Ki-Won Lee, Jones, Christopher S.

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