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Avaliação agronômica e fluxo de gases do efeito estufa a partir de solo tratado com resíduos e cultivado com mamona (Ricinus communis L.) em área de reforma de canavial; Agronomic evaluation and greenhouse gas flow from soil treated with residues and cultivated with castor bean (Ricinus communis L.) in a reform area of sugar cane

Chiaradia, Jonas Jacob
Fonte: Biblioteca Digitais de Teses e Dissertações da USP Publicador: Biblioteca Digitais de Teses e Dissertações da USP
Tipo: Tese de Doutorado Formato: application/pdf
Publicado em 09/02/2006 PT
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36.33%
A aplicação de resíduos em solos agrícolas pode alterar significativamente a dinâmica do ciclo dos elementos no solo, conseqüentemente modificando sua fertilidade, a nutrição das plantas e os fluxos de gases do solo para a atmosfera. A possibilidade de produção de biocombustíveis a partir de óleos vegetais e com a atenção especial dada a cultura da mamona faz nesse momento com que o cultivo desta oleaginosa ressurja nacionalmente como cultura de interesse. Além disso, em áreas agrícolas próximas a grandes centros urbanos, a utilização agrícola de resíduos na agricultura é uma prática já empregada, porém ainda, sem o total conhecimento dos processos envolvidos em relação ao comportamento desses materiais no ambiente e seu real comportamento como fonte de nutrientes para as culturas. Em função do exposto, o presente trabalho foi realizado com o objetivo de avaliar os efeitos de três resíduos, contendo diferentes formas de N, na fertilidade do solo e nutrição mineral da mamona cultivada em área de reforma de canavial, bem como também quantificar os fluxos de gases do efeito estufa (CO2, CH4 e N2O) em função da aplicação de doses de um lodo de esgoto ou fertilização mineral no solo, antes do plantio da mamona. Assim...

Composição química e atividade biológica de resíduos agroindustriais; Chemical composition and biological activity of agroindustrial residues

Melo, Priscilla Siqueira
Fonte: Biblioteca Digitais de Teses e Dissertações da USP Publicador: Biblioteca Digitais de Teses e Dissertações da USP
Tipo: Dissertação de Mestrado Formato: application/pdf
Publicado em 10/09/2010 PT
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36.18%
A agroindústria tem se expandido para atender a crescente demanda populacional por alimentos. Dentro deste contexto, o Brasil com sua economia fortemente baseada no agronegócio contribui para a geração de grande quantidade de resíduos agroindustriais resultantes das atividades de processamento. Estes resíduos, por sua vez, representam um grave problema, pois aparentemente sem aplicação viável, são descartados diretamente ao meio ambiente. Muitos deles são ricos em compostos bioativos, amplamente reconhecidos pelas suas propriedades promotoras de saúde e aplicações tecnológicas, tais como antioxidantes e antimicrobianos, representando, portanto, potenciais fontes naturais destas substâncias. Neste trabalho, foram analisados 15 resíduos agroindustriais coletados em Bento Gonçalves, RS, Petrolina, PE, Monte Alto e Jacareí, SP. São eles: bagaços de uva Pinot Noir, Petit Verdot, Cabernet Sauvignon, Isabel (tintas), Moscato, Verdejo (brancas); engaços de uva Cabernet Sauvignon; Syrah (tintas), Moscato, Verdejo (brancas); borras de vinho tinto e branco; bagaço de tomate; bagaço de goiaba e bagaço de malte. As amostras foram extraídas com solventes de diferentes polaridades (hexano, clorofórmio, acetato de etila...

Assessment of the genotoxicity of two agricultural residues after processing by diplopods using the Allium cepa assay

Christofoletti, Cintya A.; Pedro-Escher, Janaína; Fontanetti, Carmem S.
Fonte: Universidade Estadual Paulista Publicador: Universidade Estadual Paulista
Tipo: Artigo de Revista Científica
ENG
Relevância na Pesquisa
36.22%
Agroindustrial by-products and residues from treatment of sewage sludge have been recently recycled as soil amendments. This study was aimed at assessing toxic potential of biosolid, obtained from a sewage treatment plant (STP), vinasse, a by-product of the sugar cane industry, and a combination of both residues using Allium cepa assay. Bioprocessing of these samples by a terrestrial invertebrate (diplopod Rhinocricus padbergi) was also examined. Bioassay assembly followed standards of the Brazilian legislation for disposal of these residues. After adding residues, 20 diplopods were placed in each terrarium, where they remained for 30 days. Chemical analysis and the A. cepa assay were conducted before and after bioprocessing by diplopods. At the end of the bioassay, there was a decrease in arsenic and mercury. For the remaining metals, accumulation and/or bioavailability varied in all samples but suggested bioprocessing by animals. The A. cepa test revealed genotoxic effects characterized by different chromosome aberrations. Micronuclei and chromosome breaks on meristematic cells and F1 cells with micronuclei were examined to assess mutagenicity of samples. After 30 days, the genotoxic effects were significantly reduced in the soil + biosolid and soil + biosolid + vinasse groups as well as the mutagenic effects in the soil + biosolid + vinasse group. Similar to vermicomposting...

Fertilisation residues alter leaf scleromorphy in an evergreen savannah shrub (Maprounea brasiliensis, Euphorbiaceae)

Delgado, Marina Neves; Gomes, Misléia Rodrigues de Aguiar; Báo, Sônia Nair; Rossatto, Davi Rodrigo
Fonte: Universidade Estadual Paulista Publicador: Universidade Estadual Paulista
Tipo: Artigo de Revista Científica Formato: 266-273
ENG
Relevância na Pesquisa
36.2%
In the present study, we examined how residues of nitrogen (N), phosphorus (P) and calcium (Ca) fertilisers affect leaf anatomical traits in Maprounea brasiliensis (Euphorbiaceae), a typical and dominant cerrado (Brazilian savannah) species adapted to dystrophic soils. We predicted that fertiliser residues would alter qualitative and quantitative aspects of M. brasiliensis leaves and would decrease their scleromorphy. Leaves were sampled from plants that were growing in soils previously fertilised with N, P and Ca and in plants that were growing in soils without fertiliser residues. We measured the thickness of the cuticle, the epidermis of adaxial and abaxial surfaces, thickness of palisade parenchyma and spongy parenchyma, total thickness of the leaf, total area of the midrib and leaf mass per area (LMA). We found that plants under fertiliser residues produced fewer scleromorphic leaves with low LMA, thinner cuticle and epidermis and thicker palisade and spongy parenchyma. They also showed a decrease in the size and area occupied by the leaf midvein. However, plants under fertiliser residues produced similar leaf thickness as did the plants in the control group. Our results showed that residual effects of fertilisation changed structural patterns of a typical species of cerrado. Thus...

Estimating the effect on nitrogen mineralization from organic residues applied to degraded soils

Cordovil, C.; Teixeira, T.
Fonte: Cordovil, C. e Ferreira, L. Publicador: Cordovil, C. e Ferreira, L.
Tipo: Conferência ou Objeto de Conferência
Publicado em /09/2010 ENG
Relevância na Pesquisa
36.18%
RAMIRAN International Conference; Nitrogen (N) is the nutrient most likely to be limiting for plant and animal production. Also, increasing world population, is giving rise to the need for more food production, in quantity and quality enough to supply man’s needs. It is therefore necessary to supply more and more nutrients to the soil in order to achieve the production levels required to reduce world hunger. Intensive and somewhat indiscriminate use of commercial fertilizers is not environmentally sustainable, and excessive application of N, as mineral fertilizers, may lead to many environmental problems such as nitrate pollution of water resources, amongst others. Simultaneously, intensification of agriculture, as well as the development of industry, has been leading to the increasing production of organic residues such as manure, municipal solid waste, crop and forest waste, food industry waste, among others (Sims, 1995). Their application to agricultural land is a good solution for recycling, can increase soil organic matter content, and to provide plant nutrients such as N, as a good alternative to commercial fertilizers (Cordovil, 2004). The application of organic residues to agricultural soils as a source of N needs a better understanding of the processes involving the mineralization of organic N compounds. A good prediction of the amounts of N mineralized from the residues is an interesting issue...

Characterization and treatment of sisal fiber residues for cement-based composite application

Lima,Paulo R. L.; Santos,Rogério J.; Ferreira,Saulo R.; Toledo Filho,Romildo D.
Fonte: Associação Brasileira de Engenharia Agrícola Publicador: Associação Brasileira de Engenharia Agrícola
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/10/2014 EN
Relevância na Pesquisa
36.26%
Sisal fiber is an important agricultural product used in the manufacture of ropes, rugs and also as a reinforcement of polymeric or cement-based composites. However, during the fiber production process a large amount of residues is generated which currently have a low potential for commercial use. The aim of this study is to characterize the agricultural residues by the production and improvement of sisal fiber, called field bush and refugo and verify the potentiality of their use in the reinforcement of cement-based composites. The residues were treated with wet-dry cycles and evaluated using tensile testing of fibers, scanning electron microscopy (SEM) and Fourier transform infrared (FTIR) spectroscopy. Compatibility with the cement-based matrix was evaluated through the fiber pull-out test and flexural test in composites reinforced with 2 % of sisal residues. The results indicate that the use of treated residue allows the production of composites with good mechanical properties that are superior to the traditional composites reinforced with natural sisal fibers.

Glucose(xylose) isomerase production by Streptomyces sp. CH7 grown on agricultural residues

Chanitnun,Kankiya; Pinphanichakarn,Pairoh
Fonte: Sociedade Brasileira de Microbiologia Publicador: Sociedade Brasileira de Microbiologia
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/09/2012 EN
Relevância na Pesquisa
36.19%
Streptomyces sp. CH7 was found to efficiently produce glucose(xylose) isomerase when grown on either xylan or agricultural residues. This strain produced a glucose(xylose) isomerase activity of roughly 1.8 U/mg of protein when it was grown in medium containing 1% xylose as a carbon source. Maximal enzymatic activities of about 5 and 3 U/mg were obtained when 1% xylan and 2.5% corn husks were used, respectively. The enzyme was purified from a mycelial extract to 16-fold purity with only two consecutive column chromatography steps using Macro-prep DEAE and Sephacryl-300, respectively. The approximate molecular weight of the purified enzyme is 170 kDa, and it has four identical subunits of 43.6 kDa as estimated by SDS-PAGE. Its Km values for glucose and xylose were found to be 258.96 and 82.77 mM, respectively, and its Vmax values are 32.42 and 63.64 μM/min/mg, respectively. The purified enzyme is optimally active at 85ºC and pH 7.0. It is stable at pH 5.5-8.5 and at temperatures up to 60ºC after 30 min. These findings indicate that glucose(xylose) isomerase from Streptomyces sp. CH7 has the potential for industrial applications, especially for high-fructose syrup production and bioethanol fermentation from hemicellulosic hydrolysates by Saccharomyces cerevisiae.

Transfer of Atrazine degradation capability to mineralize aged 14C?Labeled Atrazine residues in soils.

JABLONOWSKI, N. D.; KRUTZ, J. L.; MARTINAZZO, R.; ZAJKOSKA, P.; HAMACHER, G.; BORCHARD, N.; BURAUEL, P.
Fonte: Journal of Agricultural and Food Chemistry, Washington, DC, v. 61, p. 6161-6166, 2013. Publicador: Journal of Agricultural and Food Chemistry, Washington, DC, v. 61, p. 6161-6166, 2013.
Tipo: Artigo em periódico indexado (ALICE)
PT_BR
Relevância na Pesquisa
46.03%
The degradation of environmentally long-term aged (22 years) 14C-labeled atrazine residues in soil stimulated by inoculation with atrazine-adapted soil from Belgium, the United States (U.S.), and Brazil at two different moisture regimes (50% WHCmax/slurried conditions) was evaluated. Inoculation of the soil containing the aged 14C-labeled atrazine residues with 5, 50, and 100% (w/w) Belgian, U.S., or Brazilian atrazine-adapted soil increased 14C-atrazine residue mineralization by a factor of 3.1? 13.9, depending upon the amount of atrazine-adapted soil inocula and the moisture conditions. Aged 14C-atrazine residue mineralization varied between 2 and 8% for Belgian and between 1 and 2% for U.S. and Brazilian soil inoculum at 50% WHCmax but was increased under slurried conditions, accounting for 8?10% (Belgian soil), 2?7% (Brazilian soil), and 3% (American soil). The results show that an increased degradation of long-term aged 14C-labeled atrazine residues is possible by the transfer of atrazine-adapted soil microflora from different soils and regions to non-adapted soil.; 2013

Investment in Agricultural Water for Poverty Reduction and Economic Growth in Sub-Saharan Africa : Synthesis Report

World Bank
Fonte: World Bank, Washington, DC Publicador: World Bank, Washington, DC
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36.2%
The report analyses the contribution to date of agricultural water management to poverty reduction and growth in the in sub-Saharan Africa region, the reasons for its slow expansion and apparently poor track record, as well as the ways in which increased investment in agricultural water management could make a sustainable contribution to further poverty reduction and growth. The first chapter places agricultural water management in the context of the millennium development goals and paths to poverty reduction through agricultural growth. The second to fifth chapters contain a regional diagnostic that looks at the role of agricultural water management in sub-Saharan Africa, examines the contribution that investment projects have made, reviews the changing institutional context, and assesses the potential for further development. The sixth and the final chapter then summarizes the lessons and recommendations for increasing the contribution of agricultural water management to poverty reduction and growth in the region.

Promoting Agricultural Growth in Rwanda : Recent Performance, Challenges and Opportunities

World Bank
Fonte: Washington, DC Publicador: Washington, DC
EN_US
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36.18%
Rwanda is experiencing its best growth performance since independence. With average annual GDP growth rate of 8 percent and 5.2 percent for agricultural GDP from 1999-2012, Rwanda s recent growth is a historical record. The poverty headcount fell from 59 percent in 2001 to 45 percent in 2011, and agriculture continues to be one of the main drivers of growth and poverty reduction in Rwanda, significantly lifting rural households out of poverty. Yet, challenges in the agriculture sector remain. Specifically, to: (i) sustain the productivity gains in the short and medium-term, which have contributed to strong agriculture growth and raised rural incomes; ii) increase and improve nutrition security for the rural population; iii) strengthen and deepen value chain development including increasing agro-processing to create non-farm employment; iv) secure and strengthen linkages to domestic and international markets for agriculture production; and v) enhance the enabling environment to attract the private sector to invest in the sector and add value to the productivity increases.

Georgia

World Bank
Fonte: Washington, DC Publicador: Washington, DC
Tipo: Brief
EN_US
Relevância na Pesquisa
36.2%
This country note for Georgia is part of a series of country briefs that summarize information relevant to climate change and agriculture for three countries in the Southern Caucasus Region, with a particular focus on climate and crop projections, adaptation options, policy development and institutional involvement. The note series has been developed to provide a baseline of knowledge on climate change and agriculture for the countries participating in the regional program on reducing vulnerability to climate change in Southern Caucasus agricultural systems. This note for Georgia was shared with the Government and other agricultural sector stakeholders and used as an engagement tool for a National Awareness Raising and Consultation Workshop, held in Tbilisi in April 2012. Feedback and comments on the note from this consultation process have been incorporated into this updated version in collaboration with the Georgian Ministry of Agriculture.

Ghana Agricultural Sector Risk Assessment; Risk Prioritization

Choudhary, Vikas; D'Alessandro, Stephen
Fonte: World Bank, Washington, DC Publicador: World Bank, Washington, DC
Tipo: Report; Economic & Sector Work :: Other Agricultural Study
ENGLISH; EN_US
Relevância na Pesquisa
36.19%
Improved agricultural risk management is one of the core enabling actions of the Group of Eight’s (G-8’s) New Alliance for Food Security and Nutrition. The Agricultural Risk Management Team (ARMT) of the Agriculture and Environment Services Department of the World Bank conducted an agricultural sector risk assessment to better understand the dynamics of agricultural risks and identify appropriate responses, incorporate agricultural risk perspective into decision-making, and build capacity of local stakeholders in risk assessment and management.

Arab Republic of Egypt - Toward Agricultural Competitiveness in the 21st Century : An Agricultural Export-Oriented Strategy

World Bank
Fonte: Washington, DC Publicador: Washington, DC
ENGLISH; EN_US
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36.21%
The report proposes key elements for an agricultural export-oriented strategy in Egypt, that would build on the achievements of the agricultural strategy during the 1990s. Substantial improvements in the country's macroeconomic environment, following policy reforms - though necessary - have not been sufficient to improve agricultural export performance. Overall, while Egyptian agricultural production increased during the 90s, agricultural exports remained low, and, the fact that both Egyptian production, and world market trends are substantially less volatile, is a first indicator of the potential to increase agricultural exports. The proposed agricultural export strategy starts with an analysis of the agricultural export potential in the country, which includes a review on the overall agricultural export performance; an analysis of the incentive framework in agriculture, including estimates of the current nominal, and effective protection rates of key imports, and exports, and, the estimated effects of alternative agricultural...

Understanding the Agricultural Input Landscape in Sub-Saharan Africa : Recent Plot, Household, and Community-Level Evidence

Sheahan, Megan; Barrett, Christopher B.
Fonte: World Bank Group, Washington, DC Publicador: World Bank Group, Washington, DC
Tipo: Publications & Research :: Policy Research Working Paper; Publications & Research
ENGLISH; EN_US
Relevância na Pesquisa
36.21%
Conventional wisdom holds that Sub-Saharan African farmers use few modern inputs despite the fact that most growth-inducing and poverty-reducing agricultural growth in the region is expected to come largely from expanded use of inputs that embody improved technologies, particularly improved seed, fertilizers and other agro-chemicals, machinery, and irrigation. Yet following several years of high food prices, concerted policy efforts to intensify fertilizer and hybrid seed use, and increased public and private investment in agriculture, how low is modern input use in Africa really? This paper revisits Africa's agricultural input landscape, exploiting the unique, recently collected, nationally representative, agriculturally intensive, and cross-country comparable Living Standard Measurement Study-Integrated Surveys on Agriculture covering six countries in the region (Ethiopia, Malawi, Niger, Nigeria, Tanzania, and Uganda). The study uses data from more than 22,000 households and 62,000 plots to investigate a range of commonly held conceptions about modern input use in Africa...

Reducing the Vulnerability of the Former Yugoslav Republic of Macedonia's Agricultural Systems to Climate Change : Impact Assessment and Adaptation Options

Sutton, William R.; Srivastava, Jitendra P.; Neumann, James E.; Strzępek, Kenneth M.; Boehlert, Brent B.
Fonte: Washington, DC: World Bank Publicador: Washington, DC: World Bank
Tipo: Publications & Research :: Publication; Publications & Research
EN_US
Relevância na Pesquisa
36.21%
Agricultural production is inextricably tied to climate, making agriculture one of the most climate-sensitive of all economic sectors. In countries such as the Former Yugoslav Republic (FYR) of Macedonia, the risks of climate change for the agricultural sector are a particularly immediate and important problem because the majority of the rural population depends either directly or indirectly on agriculture for their livelihoods. Climate impacts can therefore undermine progress that has been made in poverty reduction and adversely impact food security and economic growth in vulnerable rural areas. In order to be effective, a plan for adapting the sector to climate change must strengthen both human capital and physical capital in their capacity. The need to adapt to climate change in all sectors is now on the agenda of national governments and development partners. As a result, development partners will continue to have an important role in enhancing the adaptive capacity of the Macedonian agricultural sector. Another key factor for FYR Macedonia's development of an adaptation plan for agriculture is furthering FYR Macedonia's work toward European Union (EU) accession, for which FYR Macedonia has been a candidate since 2005. The Macedonian government has already begun to focus on required EU reforms...

Ukraine Agricultural Competitiveness

World Bank
Fonte: Washington, DC Publicador: Washington, DC
Tipo: Economic & Sector Work :: Policy Note; Economic & Sector Work
ENGLISH; EN_US
Relevância na Pesquisa
36.22%
The agri-food sector is an important part of the Ukrainian economy. Agriculture could make an even larger contribution to economic growth and the vitality of rural areas in Ukraine than is currently the case. Ukraine has the agro-climatic potential to be a major player on world agricultural markets. Agricultural competitiveness in Ukraine also suffers from inadequate systems to test and document food product quality and food safety. Ukraine's food safety control system is complicated and characterized by fragmented and often overlapping jurisdictions. Many standards applied in Ukraine are inconsistent with World Trade Organization (WTO) provisions, with standards established by the responsible international bodies and with accepted practices in international trade. Without improvements towards an efficient and internationally recognized food quality and safety control system, Ukrainian agriculture will find it increasingly difficult to sell into international markets and its products will not be able to command top prices. The ban on Ukrainian meat...

Um sistema de informação para a análise multi-dimensional da actividade agrícola. Aplicação em diversos casos do panorama agrícola nacional; An information system for the multi-dimensional analysis of the agricultural activity - application in several cases of the national agricultural sector

Tristany, Miguel Nuno Guedes
Fonte: Universidade Técnica de Lisboa Publicador: Universidade Técnica de Lisboa
Tipo: Tese de Doutorado
Publicado em //2010 POR
Relevância na Pesquisa
36.23%
Doutoramento em Engenharia Agronómica - Instituto Superior de Agronomia; In a globalised world that refuses progressively the externalization of any type of cost, especially environmental cost, it's urgent to look at the agricultural sector with a broad perspective, incorporating new decision variables and means of analysis. The agricultural activity is asked with increasing insistence to adapt to new tasks, respecting all types of demands directed to its production systems. This thesis involved the compilation of information on a broad spectrum of activities, resources and products, and the creation of a model that would allow a multi-dimensional analysis of the agricultural activities at national level, in order to respond to a possibly wide range of questions about economic and environmental performance, numerically or spatially. The case-studies presented, aimed at demonstrating the usefulness of the system in this multi-dimensional approach to agriculture, are four: analysis of suitability to irrigation of the Portuguese territory; technical and economical evaluation of land consolidation projects; the production of agricultural residues at national level; suitability of the Alqueva perimeter for several bioenergetic crops.

Evaluation of the N2O emissions from N in plant residues as affected by environmental and management factors

Tejeda, Hernan R.; Novoa, Rafael
Fonte: SPRINGER Publicador: SPRINGER
Tipo: Artículo de revista
EN
Relevância na Pesquisa
36.25%
A review of the N2O-N emission from crop residues was conducted based on new data published during the last decade. The result indicated that factors as type of crop, biochemical quality of residues, agricultural management, climate and season of the year, soil properties and soil moisture play a significant role in the rate of N2O-N emissions. An emission factor (EF) equal to 1.055% of N applied in plant residues - derived from a simple linear regression of emitted N2O-N (kg ha(-1)) on N applied in crop residues (kg ha(-1)) - represent an estimate that explains about 60% of emission variations. However, the EF of N applied in plant residues is not a constant but a variable coefficient that depends on environmental and management variables. The following two linear models - that estimate emitted N2O-N (kg ha(-1)) as a function of the variables N (kg ha(-1)) applied in plant residues (NPR), rain (mm), temperature (degrees C) and temperature(2)(degrees C-2) - were fitted to the dataset with 45 observations obtained from the reviewed literature. N2O-N = -4.154 + 0.00955 NPR + 1.7278 ApM + 0.003996 Rain + 0.6242 Tem - 0.0230 Tem(2) and N2O-N = 0.6535 + [-0.0404 + 0.0078 ApM + 0.000044 Rain + 0.00567 Tern - 0.0001975 Tem(2)] NPR Both models provided almost equally good statistical fit to the data...

Diversity, occurrence, and life characteristics of natural entomopathogenic nematode populations from La Rioja (Northern Spain) under different agricultural management and their relationships with soil factors

Campos-Herrera, R.; Gómez Ros, J. M.; Escuer, M.; Cuadra, Luis Manuel; Barrios, Laura; Gutiérrez, Carmen
Fonte: Elsevier Publicador: Elsevier
Tipo: Artículo Formato: 378512 bytes; application/pdf
ENG
Relevância na Pesquisa
36.23%
11 pages; figures and tables; Natural entomopathogenic nematode (EPN) populations were surveyed in La Rioja (Northern Spain) during two consecutive years (2003–2005) to study their diversity, occurrence, and life characteristics under different agricultural management representing natural areas and perennial and annual crops from organic and conventional systems. Native EPN species and strains were identified using morphological and molecular characteristics. Virulence, infection cycle length and reproductive potential were assessed using Galleria mellonella larvae. The EPN occurrence was evaluated through abundance, recovery frequency, larval mortality percentage and EPN population density. EPNs were also related to selected soil physical and chemical variables as well as to some soil pollutants such as heavy metals and organochlorine pesticide residues. Only two steinernematids species were identified: Steinernema feltiae was observed throughout all seasons from natural and agricultural areas and Steinernema carpocapsae in summer and autumn of 2004 from perennial crops only. The virulence of native strains was lower than other previously isolated Spanish strain from natural areas or crop field edges. EPN abundance and recovery frequency indicated that habitat type might influence EPNs occurrence stronger than seasonality with the intensity of agricultural management inversely affecting their distribution. Moreover...

Kenya; Agricultural Sector Risk Assessment

D’Alessandro, Stephen P.; Caballero, Jorge; Lichte, John; Simpkin, Simon
Fonte: World Bank, Washington, DC Publicador: World Bank, Washington, DC
Tipo: Report; Economic & Sector Work :: Other Agriculture Study; Economic & Sector Work
ENGLISH; EN_US
Relevância na Pesquisa
36.21%
Despite myriad challenges, Kenya has emerged in recent years as one of Africa’s frontier economies, with headline growth in the most recent decade propelling the country toward middle-income status. Less well understood is how risk dynamics associated with production, markets, and policy adversely impact sector performance, in terms of both influencing ex ante decision making among farmers, traders, and other sector stakeholders and causing ex post losses to crops, livestock, and incomes - destabilizing livelihoods and jeopardizing the country’s food security. The present study was commissioned in part to bridge this knowledge gap. It is the first step in a multiphase process designed to integrate a stronger risk focus into sector planning and development programs. It seeks to learn from and build on a range of broad initiatives by the Government of Kenya (GoK) and its development partners purposed to enhance Kenya’s resilience and response to natural disasters. The ultimate objective is implementation of a holistic and systematic risk management system that will reduce the vulnerability and strengthen the resiliency of Kenya’s agricultural supply chains...