Abstract[1] Natural resources as a source of wealth can increase prosperity or impede economic growth.  Empirical studies with different specifications and data are also mixed on whether natural resources are curse or blessing. In fact, the variety of model specifications, measurements, and samples in the empirical literature makes it difficult to generalize the results. In this study, a growth...

in order to study the effects of growth promoting bacteria (gpr) and mycorrhizal fungi on seedling emergence, establishment and growth of two ecotypes alfalfa under salinity stress condition, an experiment was conducted in greenhouse of college of agriculture and natural resources, university of tehran in summer 2011. the experiment was arranged as a factorial with three replications. experimen...

the purpose of this research was to investigate the attitude of vegetable growers towards sources of soil pollution in ray county. the study consisted of all vegetable growers (n=700) in ray county, located in tehran province, from which 70 vegetable growers were selected through random sampling technique. a planned questionnaire was used as the main instrument to collect data. the content vali...

Department of Agriculture, Agricultural Research Service, Plant Genetic Resources Unit, 1109 Experiment Street, Griffin, Georgia 30223, USA Department of Chemistry, Gordon College, 255 Grapevine Road, Wenham, MA 01984 USA Department of Agriculture, Agricultural Research Service, Southeast Watershed Research Laboratory, P.O. Box 748, Tifton, Georgia 31793 USA Department of Agriculture, Agricultu...

1Department of Plant Protection, College of Agriculture, Shahid Chamran University of Ahvaz Ahvaz, Iran; E-mail: [email protected] 2Departments of Biology, College of Science, Shahid Chamran University of Ahvaz, Ahvaz, Iran; E-mail: [email protected]; [email protected] 3Department of Agronomy and Plant Breeding, College of Agriculture, Shahid Chamran University of Ahvaz, Ahvaz, Iran; E-m...

development projects in natural water resources like rivers and lakes, specially transferring water to use in agriculture, domestic and industrial sector without considering environmental values, causes irrecoverable and irreversible damage to ecosystem and future options. if we consider the future generation and species rights, those damages and costs can be very much than we take in. the abov...

nowadays because of various factors, including inappropriate land use, and indiscriminate exploitation of water resources, soil and vegetation, wide areas of the country were exposed to destruction of lands and desertification. therefore dealing with this situation requires a comprehensive land use program (water and land) and appropriate environment potency. the study area is patom district of...

forty monoconidial isolates of magnaporthe grisea were examined, for an identification of vegetative compatibility group and a characterization of genetic diversity, using rep-pcr genomic fingerprinting. the isolates were collected from weeds digitaria sanguinalis (crabgrass), setaria italica (foxtail millet), echinochloa crus-galli (barnyard millet), and some other unknown ones during 2003 - 2...