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Doll, Jerry D.Leihner, D.E.Fuentes de Piedrahíta, Cilia L.[Guía de estudio para ser usada como complemento de la unidad audiotutorial sobre el mismo tema][Manejo y control de las malezas en el cultivo de la yuca]Manejo y control de las malezas en el cultivo de la yuca
Rosero Morán, Manuel J.[Informe de viaje de observación a los países de Venezuela, Colombia, Ecuador, Panamá y Costa Rica, agosto 5-19, 1984]Informe de viaje de observación a los países de Venezuela, Colombia, Ecuador, Panamá y Costa Rica, agosto 5-19, 1984
González Franco, JoaquínZelaya, RArregocés, OscarEscobar Manrique, E.[Principales malezas en el cultivo del arroz en América Latina [conjunto audiotutorial]]Principales malezas en el cultivo del arroz en América Latina [conjunto audiotutorial]

Parasitic weeds in smallholder rice production systems, of which Striga asiatica, Striga hermonthica and Rhamphicarpa fistulosa are the main representatives, form an increasing problem for food and income security in sub-Saharan Africa (SSA). The objective of this paper is to identify institution...


Schut, MarcRodenburg, J.Klerkx, LaurensHinnou, L.C.Kayeke, J.Bastiaans, L.[Participatory appraisal of institutional and political constraints and opportunities for innovation to address parasitic weeds in rice]Participatory appraisal of institutional and political constraints and opportunities for innovation to address parasitic weeds in rice

Weeds compete for nutrients and soil moisture resulting to low maize yields in dry lands. A three year field study was initiated in 2009 at Kenya Agricultural and Livestock Research Organization, Kiboko to evaluate the effect of dolichos bean (Lablab purpureus L.) and open pollinated imazapyr her...


Mwangi, H.W.Kihurani, A.W.Wesonga, J.M.Ariga, E.S.Kanampiu, F.[Effect of Lablab purpureus L. cover crop and imidazolinone resistant (IR) maize on weeds in drought prone areas, Kenya]Effect of Lablab purpureus L. cover crop and imidazolinone resistant (IR) maize on weeds in drought prone areas, Kenya

Biological control is a significant component of integrated pest management programs around the world. However, uncertainty about the risk of unanticipated effects on non-target organisms is one of the major concerns surrounding the release of biological control agents. This Brief has been prepar...


Hoeschle-Zeledon, IrmgardNeuenschwander, P.Kumar, P.L.[Regulatory challenges for biological control]Regulatory challenges for biological control
Autor: Sabogal, C.

The persistent physical, chemical and biological limitations found in degraded forest lands create barriers to natural forest regeneration; an accurate assessment of these factors is key in determining which rehabilitation interventions will be necessary, based on the objectives of the interventi...


Sabogal, C.[Site-level rehabilitation strategies for degraded forest lands]Site-level rehabilitation strategies for degraded forest lands

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