The study examined the socio-economic and farm level characteristics influencing adoption of rice production technologies in Lavun Local Government Area of Niger State, Nigeria. A total of 76 farmers were randomly selected from 24 villages and data were collected using interview schedule. Descriptive statistics, adoption index and discriminate analysis were used to analyze data. The result reve...

This study estimates technical efficiency obtained from both Data Envelopment Analysis (DEA) and stochastic frontier approach using household survey data for rice farming households in Vietnam. A bootstrap method is used to provide statistical precision of DEA estimator. Bootstrap methods have not commonly used in empirical analysis despite being an important statistical tool for improving the ...

Preliminary serological investigations were prefered to detect evidence of arenavirus infection in rodents.The study examined virus antibody in 367 rodents trapped in 6 different geographical areas of Nakhon Pathom Province, Thailand from February-March, 1998. The overall seroprevalence among rodents was 13.3%, mostly in Bandicota savilei (35.7%) and Rattus norvegicus (31.5%). Between ecology, ...

L’objectif de ce papier est d’étudier la manière dont les stratégies d’adaptation mises en œuvre par exploitations agricoles permettent d’accroître leur productivité dans un contexte changement climatique. Des données collectées auprès 360 rizicoles, choisies aléatoirement vallée du fleuve Sénégal, ont permis d’identifier d’adaptation. Un modèle à endogène régime a été construit pour analyser d...

Ruddiman (2003) introduced a three-part hypothesis on early anthropogenic influences on late Holocene climate. He proposed that humans reversed a natural decrease in atmospheric CO2 values 8000 years ago by starting to clear forests for farms, that they reversed a natural methane decrease after 5000 years ago mainly by beginning to irrigate rice, and that they caused an anthropogenic warming su...

A tentative list of ecological attributes; diversity, cycling, stability and capacity, is proposed for quantification and ranking of farming systems along a hypothetical scale of increasing ecological sustainability. The modelling and preliminary analysis of four rice-based systems from the Philippines, two on-station experimental systems and two smallholder farms, confirms our intuitive percep...

* Corresponding author. E-mail addresses: [email protected] (M. Fang). 1537-5110/$ – see front matter a 2009 IAgrE doi:10.1016/j.biosystemseng.2009.12.008 Heavy metal stress in soils results in subtle changes in leaf chlorophyll concentration, which are related to crop growth and crop yield. Accurate estimation of the chlorophyll concentration of a crop under heavy metal stress is essential...

This paper presents a framework for quant$ying and diagnosing constraints to sustainability of farming systems. For a dynamic, stochastic, purposeful system, sustainability is defined as its ability to continue into the future. It can be expressed as the probability of continuation within specified threshold boundaries through a spectjied future period. Long-term, stochastic simulation of a sys...

Abstract Background High-yielding variety (HYV) seed breeding has been one key approach to improving agricultural productivity and reduce global hunger poverty. This paper explores the causal relationship between high-yielding rice variety, productivity, farm income household nutrition. A challenge with evaluating impact of changes such as crop varieties on yield is self-selection endogeneity. ...

the dry bubble disease, caused by lecanicillium fungicola, is an important fungal disease of white button mushroom in iranian mushroom production farms. twenty-three isolates of the pathogen collected in iran and identified as l. fungicola var. fungicola, were compared for genetic polymorphism, diversity in growth rate and virulence. ten universal rice primers (urp) were used to evaluate the ge...