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From the most important bean-growing areas in Costa Rica, 5 representative locations were selected; a random sampling of 44 farms was conducted to find out why farmers prefer the covered bean system and its main agronomic characteristics. Farmers who used this system were based on characteristics...

Se seleccionaron 5 localidades representativas de las principales zonas de Costa Rica y se efectuo un muestreo aleatorio de 44 fincas para conocer por que predomina el sistema de siembra de frijol tapado entre los agricultores y sus principales caracteristicas agronomicas. Los agricultores que ut...


Araya Villalobos, RodolfoGonzález M, W.[La investigacion en campos de agricultores sobre frijol tapado en Costa Rica]La investigacion en campos de agricultores sobre frijol tapado en Costa Rica

Worldwide, farmers lose more than 25% of their harvests each year due to crop pests and diseases that attack their fields. Pests and diseases not only affect farmers’ family food baskets and income, but they also affect how much food is available on global markets. Ironically, one solution to tha...


Bioversity International[Offering defence against pests and diseases: Bioversity International farmer-researcher field trials mark success at several levels]Offering defence against pests and diseases: Bioversity International farmer-researcher field trials mark success at several levels

Integrated Pest Management (IPM) is a widely recognized ecosystem approach to crop production and protection that combines different management strategies and practices to grow healthy crops and minimize the use of pesticides. However, IPM methods have until recently made limited use of intra-spe...


Jarvis, Devra I.Fadda, CarloDe Santis, P.Thompson, J.Bioversity International[Damage, diversity and genetic vulnerability: The role of crop genetic diversity in the agricultural production system to reduce pest and disease damage: Proceedings of an International Symposium 15-17 February 2011, Rabat, Morocco]Damage, diversity and genetic vulnerability: The role of crop genetic diversity in the agricultural production system to reduce pest and disease damage: Proceedings of an International Symposium 15-17 February 2011, Rabat, Morocco

Cassava brown streak disease (CBSD), caused by cassava brown streak viruses, is recognized as one of the most important plant disease threats to African food security. This study describes the incidence and severity of the different symptom types caused by CBSD, derived from extensive surveys in ...


Ndyetabula, I.L.Merumba, S.M.Jeremiah, S.C.Kasele, S.Mkamilo, G.S.Kagimbo, F.M.Legg, J.P.[Analysis of interactions between cassava brown streak disease symptom types facilitates the determination of varietal responses and yield losses]Analysis of interactions between cassava brown streak disease symptom types facilitates the determination of varietal responses and yield losses

Cassava, one of the world's major food crops is grown throughout the tropical regions of the world. Cassava originated in the neotropics; it was introduced into West Africa from Brazil by slave traders in the 1500's, and taken to Asia during the 17th century. Consequently the greatest diversity o...


Bellotti, Anthony C.Braun, Ann R.Arias, B.Castillo Franco, JAGuerrero, JM[Origin and management of neotropical cassava arthropod pests]Origin and management of neotropical cassava arthropod pests

Monoculture of irrigated rice (Oryza sativa L.) in Latin America has led to serious weed problems and intensive herbicide use. Yield loss prediction enables the economic analysis of weed control, providing a basis for strategic use of herbicides and diversified weed management, but site differenc...


Flórez, J.A.Fischer, Albert J.Ramírez, Héctor V.Duque E., Myriam Cristina[Predicting rice yield losses caused by multispecies weed competition]Predicting rice yield losses caused by multispecies weed competition

Yield losses due to Uromyces phaseoli were determined in 9 bean var. selected for pustule size: BAT 93, BAT 308, and EMP 81 (type 3 pustules; more than 300 millinicrons in diameter, approx.); Jamapa, ExRico 23, and BAT 883 (type 5 pustules; more than 500 millimicrons in diameter, surrounded by a ...


Castaño Zapata, JairoMontoya, C.A.Pastor Corrales, Marcial A.[Influencia de el tipo de pustula de roya (Uromyces phaseoli (Reben) Wint.) sobre el rendimiento de cultivares de frijol (Phaseolus vulgaris L.)]Influencia de el tipo de pustula de roya (Uromyces phaseoli (Reben) Wint.) sobre el rendimiento de cultivares de frijol (Phaseolus vulgaris L.)

Biotic constraints cause major crop losses and, hence, food insecurity in sub-Saharan Africa. This study documented the popularity, production constraints, pests and diseases, farmers’ perceptions on the severity of biotic constraints and the impact of related crop losses on household food securi...


Okonya, J.Ocimati, W.Nduwayezu, A.Kantungeko, D.Niko, N.Blomme, GuyLegg, J.P.Kroschel, J.[Farmer reported pest and disease impacts on root, tuber, and banana crops and livelihoods in Rwanda and Burundi.]Farmer reported pest and disease impacts on root, tuber, and banana crops and livelihoods in Rwanda and Burundi.

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