use of plant growth promoting bacteria (pgpb) and high quality of seed as agricultural inputs play important roles in sustainable crop production. to study the effects of different levels of seed aging and pgpb's application on field emergence, seedling establishment and yield of two red kidney bean cultivars in field conditions, an experiment was carried out as factorial based in a rcbd d...

to estimate combining ability and the model of gene action for some quantitative characters, 5 different rice genotypes were used for producing a half diallel hybrids. to consider 7 quantitative traits, hybrids and their corresponding parents were evaluated based on a randomized complete block design with three replications at the rice research station of amol, iran in 2007. mean squares regard...

this paper identifies characteristics of business cycles in iran, applying hodrick-prescott (hp) and band-pass (bp) filters. using seasonal and anual data for 1970-2003, it is found that oil income is the key driving factor of business cycles in the iranian economy. furthermore, it is indicated that iran's economy has experienced seven business cycles during this period, in which the econo...

seed rot caused by pythium ultimum is an important disease of safflower in iran and other countries. therefore, finding the genetic sources of resistance and releasing of resistant cultivar is considered as important objective by safflower breeders. this disease will spread when air humidity and the moisture in the soil are sufficiently prepared and this situation occurs exactly in the time of ...

recent l y i n a clas sroom d is sect i on we f ounu an anoma l ou s superior thyroid artery in a 60-year -ol d man . the arte ry originated f rom t he common carotid 31 mm p rox imal t o its bifurcation . rega r d i ng t o the s ex , the s i de and p lace o f o r i g i n , this could be a unique case , suggesting a need for more awarene s s o f any unpredictable anomal y whi ch may be s een i ...

light as an important environmental factor, influences many aspects of plant growth and development. leaves are different in some characters including stomatal behavior under shade or light conditions. in this study, the effects of different levels of light intensity on stomatal behavior of two rose cultivars, ‘gulmira’ and ‘red one’, were evaluated under controlled conditions. to obtain differ...

a recognition of appropriate soil erosion control methods along with the use of convenient alternatives in erosion control are necessary for a proper management of natural resources. run off control through polymers is one of the new methods employed in reducing soil erosion. this research was conducted to evaluate the effects of a polymer, called anionic polyacrylamide, on soil infiltarion rat...

In this paper, we investigate domination number as well as signed domination numbers of Cay(G : S) for all cyclic group G of order n, where n in {p^m; pq} and S = { a^i : i in B(1; n)}. We also introduce some families of connected regular graphs gamma such that gamma_S(Gamma) in {2,3,4,5 }.

greenhouse gases emissions from burning fossil fuels and the effect of these gases on climate change is one of the most important ecological and political issues. in this study the energy consumption and greenhouse gas emissions from tillage and soybean planting were assessed in gorgan. this study is done on 13 soybean farms in 2012. information related to tillage and planting operations were p...