Resultados de búsqueda - "biology"

Tillage effects on physical qualities of a vertisol in the central highlands of Ethiopia por Erkossa, Teklu

“…This is through their effects on soil physical, chemical and biological qualities. In this study, four tillage methods for land preparation, "broad bed and furrows?…”
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Identifying tree populations for conservation action through geospatial analyses por Jalonen, R., Zonneveld, M. van, Thomas, E., Gaisberger, H., Vinceti, B., Hong, L.T., Loo, J.

“…Rapid development of information and communication technologies has made it possible to easily collect georeferenced information on species and their environment, and to use it for analyzing biological diversity, its distribution and threats to it. …”
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Evaluating soil quality in tropical agroecosystems of Colombia using NIRS por Velásquez, E., Lavelle, Patrick M., Barrios, E., Joffre, R, Reversat, F

“…Near infrared reflectance spectroscopy (NIRS) analysis was used to discriminate soils of different agroecosystems in Colombia, with different contents and qualities of organic matter, chemical, and biological properties. Correlations were sought between absorbance in wavelength classes as determined by NIRS, and a set of variables describing soil quality grouped into three classes: (i) chemical variables (Ca, Mg, K, exchangeable Al, total P, P-Bray II); (ii) organic variables (total C, total N, image, image, respirometry and carbon content in different fractions separated by the LUDOX physical methods) and (iii) NIRS variables quantifying the absorptions in the near infrared region separated into 101 classes of wavelength). …”
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Soil bio-functioning under Acacia nilotica var. tormentosa protected from forest along the Senegal river por Faye, A, Sall, S.N., Chotte, Jean-Luc, Lesueur, Didier

“…Acacia nilotica var. tomentosa trees from the Diarra protected forest located in the Senegal River valley were identified for the assessment of both biological nitrogen fixation, using the natural abundance method, and soil bio-functioning parameters (nodulation, root biomass, total microbial biomass, and potential N mineralization). …”
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Comportamiento de búsqueda de Amitus fuscipennis (Hymenoptera: Platygasteridae) : Tiempo de permanencia en la planta hospedera y actividad de búsqueda por Manzano Martinez, MR, Lenteren, J.C. van, Cardona Mejía, César

“…Knowledge about the foraging behaviour of parasitoids is essential to estimate the efficiency of biological control agents and to develop parasitoid release strategies. …”
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Environment and government policies in northern Nigeria por Freeman, H.A.

“…Insights are provided into the relative significance of nitrogen extracting vs. nitrogen contributing crops, on the incidence of likely biological constraints in the production system, and the influence of input use on land degradation. …”
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Food safety in low and middle income countries por Grace, Delia

“…These suggest that developing country consumers are concerned about FBD; that most of the known burden of FBD disease comes from biological hazards; and, that most FBD is the result of consumption of fresh, perishable foods sold in informal markets. …”
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Mejoramiento de la yuca para adaptacion en condiciones de estres : desarrollo de una metodologia por Hershey, Clair H.

“…Several physical and biological factors that limit cassava productivity are described: temp. and photoperiod, soil water availability, RH, soil characteristics (fertility and pH), and pests and diseases. …”
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Comparing different methods to assess weaver ant abundance in plantation trees por Wargui, R., Offenberg, J., Sinzogan, A.A.C., Adandonon, A., Kossou, D., Vayssières, Jean-François

“…Weaver ants (Oecophylla spp.) are widely used as effective biological control agents. In order to optimize their use, ant abundance needs to be tracked. …”
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Dinámica del nitrógeno y el fósforo del suelo bajo tres sistemas de uso de la tierra en laderas de Honduras por Castro, Aracely, Menjivar Flores, Juan Carlos, Barrios, Edmundo, Asakawa, Neuza, Borrero, Gonzalo, García, Edwin, Rao, Idupulapati M.

“…Similarities in N dynamics indicate that QSMAS and slash-and- burn system were equally effective in providing N, although in QSMAS it is also result of a biologically mediated process. P pools in QSMAS were more dynamic and favorable by reducing their flows towards unavailable forms. …”
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Potential of Beauveria bassiana and Metarhizium anisopliae isolates from Benin to control Plutella xylostella L. (Lepidoptera: Plutellidae) por Godonou, I., James, B., Atcha-Ahowé, C., Vodouhe, S., Kooyman, C., Ahanchédé, A., Korie, S.

“…Diamondback moth (DBM), Plutella xylostello L., is the main pest limiting cabbage production in Benin. Inthe search for biological agents to control the pest, eight isolates of the entomopathogenic fungiBeauveria bassiana and Metarhizium anisopliae indigenous to Benin were screened for virulence againstlarvae of the insect. …”
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Larval parasitoids occurring on Maruca vitrata Fabricius (Lepidoptera: Pyralidae) in Benin, West Africa por Arodokoun, D.Y., Tamo, Manuele, Cloutier, C., Brodeur, J.

“…These results are discussed in the context of future strategies for biological control of M. vitrata.…”
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Evaluation of the impact of Diachasmimorpha longicaudata on Bactrocera invadens and five African fruit fly species por Mohamed, S.A., Ekesi, S., Hanna, R.

“…The prospect of using this parasitoid in biological control of African indigenous fruit flies is discussed.…”
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Ex post impact assessment of agricultural research in subSaharan Africa: the IITA experience por Nkamleu, G.B., Coulibaly, O., Sanogo, D., Manyong, Victor M., Alene, Arega D.

“…Technologies developed and largely diffused include high yielding varieties (cassava, cowpea, yam, maize, soybean, plantainbanana), Integrated Pest Management of varieties resistant and tolerant to pests and diseases, biological control of pests and alien invasive species, eco-friendly biopesticides, improved crops, natural resource and postharvest management practices. …”
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The honeybee (Apis mellifera) developmental state shapes the genetic composition of the deformed wing virus-A quasispecies during serial transmission por Yañez, Orlando, Chávez Galarza, Julio César, Tellgren Roth, Christian, Pinto, María Alice, Neumann, Peter, R. de Miranda, Joachim

“…The main biological threat to the western honeybee (Apis mellifera) is the parasitic mite Varroa destructor, largely because it vectors lethal epidemics of honeybee viruses that, in the absence of this mite, are relatively innocuous. …”
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Potential of extremophilic and native microbial consortia in the bioleaching of heavy metals on mining process por Hualpa Cutipa, Edwin, Solórzano Acosta, Richard Andi, Huayllacayan Mallqui, Jorge Johnny, Aguirre Catalan, Heidy Mishey, León Chacón, Andrea, Castro Tena, Lucero Katherine

“…Microbial leaching (bioleaching) is a biological strategy where microbes are used to solubilize precious metals in insoluble substrates through microbial metabolism or metabolic products. …”
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Omics strategies targeting microbes with microplastic detection and biodegradation properties por Hualpa Cutipa, Edwin, Solórzano Acosta, Richard Andi, Ravelo Machari, Yadira Karolay, Gomez Barrientos, Fiorella, Huayllacayan Mallqui, Jorge Johnny, Arquíñego Zárate, Fiorella Maité, León Chacón, Andrea, Alfaro Cancino, Milagros Estefani

“…Microplastics (MPs) are the result of the physical, chemical, and biological degradation of bulky plastics, becoming a health hazard to living organisms. …”
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Analysis of soil quality through aerial biomass contribution of three forest species in relict high Andean forests of Peru por Zanabria Cáceres, Ysaias Timoteo, Cordova Torres, Betty, Clemente Archi, Gelly, Zanabria Mallqui, Rosario Magaly, Enriquez Pinedo, Lucia Carolina, Ccopi Trucios, Dennis, Ortega Quispe, Kevin Abner

“…Using random delineation methods, soil samples were collected at 20-30 cm depth, which were subjected to physical, chemical, and biological analyses, developing the determination of a Soil Quality Index (SQI). …”
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Development of anthocyanin markers: gene mapping, genomic analysis and genetic diversity studies in Ipomoea species por Arizio, Carla Marcela, Costa Tártara, Sabrina María, Zunino, Ignacio, Manifesto, Maria Marcela

“…The anthocyanins are pigments responsible for a wide range of colours in plants, from blue, red and purple, play essential biological roles as well as their genes are evolutionarily conserved. …”
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Effect of host plant on the fitness of the spittlebug Notozulia entreriana: alternative method for rearing por Foieri, Alvaro, Virla, Eduardo Gabriel, Maciá, Arnaldo, Marino de Remes Lenicov, Ana Maria

“…We also developed a new approach for small-scale breeding of N. entreriana, which will enable subsequent biological and behavioral studies on this important pest species.…”
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