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Chemical exclusion of predators with permethrin was used to test the effectiveness of the phytoseiid predator Amblyseius limonicus Garman and McGregor and a complex of minor predators in the biological control of tetranychid (Mononychellus spp., Tetranychus spp., and Oligonychus peruvianus McGreg...


Braun, Ann R.Bellotti, Anthony C.Guerrero, JMWilson, LT[Effect of predator exclusion on cassava infested with tetranychid mites (Acari: Tetranychidae)]Effect of predator exclusion on cassava infested with tetranychid mites (Acari: Tetranychidae)

Of particular interest for extractivism in tropical forest areas are useful species that occur at high density, such as the palm tucuma (Astrocaryum tucuma Martius-syn. A. aculeatum G.F.W. Meyer), a colonizer of disturbed areas in the central Amazon, whose edible fruits have found an interesting ...


Schroth, GötzMota, M.S.S. daLopes, R.Freitas, A.F. de[Extractive use, management and in situ domestication of a weedy palm, Astrocaryum tucuma, in the central Amazon]Extractive use, management and in situ domestication of a weedy palm, Astrocaryum tucuma, in the central Amazon

Agriculture in the dry savannas is intensifying in response to increasing populations of humans and livestock. As a result, increased productivity demands are placed upon integrated crop-livestock systems and more emphasis is on the roles of legumes such as cowpea. Cowpea has the potential to fun...


Tarawali, Shirley A.Singh, B.B.Gupta, S.C.Tabo, RamadjitaHarris, F.Nokoe, S.Fernández Rivera, S.Bationo, B. AndréManyong, Victor M.Makinde, K.Odion, E.C.[Cowpea as a key factor for a new approach to integrated crop-livestock systems research in the dry savannas of West Africa]Cowpea as a key factor for a new approach to integrated crop-livestock systems research in the dry savannas of West Africa

Highlights the interactions between agronomy and economics in developing forage production techniques for the two main land-use situations in the subhumid zone of Nigeria, viz, cultivation and fallow. Presents break-even sorghum grain-stylo price ratios for different undersowing times, capital an...


Kaufmann, Ralph R. vonMohamed-Saleem, M.A.[Interactions between agronomy and economics in forage legume research]Interactions between agronomy and economics in forage legume research

Two commercial eucalypt sites were selected in Sao Paulo State, Brazil, to evaluate productivity and soil chemical and physical properties before clearcutting, and the effect of harvesting and soil tillage system on productivity of second rotation. At site 1, the Eucalyptus grandis plantation was...


Dedecek, R.A.Bellote, A.F.J.Gava, J.L.Menegol, O.[Site characterisation and the effects of harvesting on soil tillage on the productivity of Eucalyptus grandis plantations in Brazil]Site characterisation and the effects of harvesting on soil tillage on the productivity of Eucalyptus grandis plantations in Brazil
Kobayashi, S.Ueda, E.[Site management strategy on the forest harvesting and short/long-term rotation of plantation]Site management strategy on the forest harvesting and short/long-term rotation of plantation

In total 60 plots of approximately 80 trees each (including missing trees) were measured, with ages between 1 and 26 years. The main objective of this study was to develop intensive management scenarios for B. quinata plantations in Costa Rica to ensure high yielding of timber wood. The scenarios...


Pérez Cordero, L.D.Kanninen, M.Ugalde Arias, Luis A.[Stand growth scenarios for Bombacopsis quinata plantations in Costa Rica]Stand growth scenarios for Bombacopsis quinata plantations in Costa Rica

Galeano, CarlosNutti, MariliaRamírez Villegas, JuliánVanegas, HenryPasculli, LauraPeña, YadiraAguilar, DanielGovaerts, BramVega, DanielaChávez, XiomaraNarro, LuisSan Vicente, Félix ManuelPalacios, NataliaPérez, MercedesGonzález, GabrielaOrtega, PaulinaCarvajal, AndreaArcos, Alba LuciaBolaños, JanethRomero, NestorBolaños, JoelVanegas, Yeison FabiánEcheverría, Rubén G.Jarvis, AndyJiménez, DanielKropff, WietskeGonzález, Carlos EduardoNavarro-Racines, CarlosOrdóñez, LeonardoPrager, Steven D.Tapasco, Jeimar[Maize for Colombia 2030 Vision]Maize for Colombia 2030 Vision

Small ruminants contribute significantly to meat (and sometimes milk) production in Africa and hence in meeting the current shortfall created by the fast rising human population. Flock productivity may, however, be affected by a wide range of disease problems and reproductive wastage. The impact ...


Mukasa-Mugerwa, E.[Possible impact of disease and reproductive wastage on the productivity of tropical small ruminants: An overview]Possible impact of disease and reproductive wastage on the productivity of tropical small ruminants: An overview

A series of trials were carried out using cassava. Crop growth rate increased with leaf area up to LAI 4; root growth rate increased up to LAI 3-3.5, then declined. LAI is determined by leaf size, leaf formation rate and individual leaf life. Leaf size reached a max 4 mo after planting and then d...


Cock, James H.Franklin, D.Sandoval, G.Juri, P.[The ideal cassava plant for maximum yield]The ideal cassava plant for maximum yield

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