a factorial experiment was conducted for two years in the mahidasht experimental station in kermanshah. the objective of this experiment was to determine the optimum time of nitrogen application on two sugar beet varieties from both, quality and quantity point of views. these varieties, 7233- a diploid and pp22 a polyploidy variety were grown and subjected to five levels of nitrogen application...

in this paper price and non- price factors affecting the area of sugar beet cultivation was been studied, using a logarithmic model and a cross sectional data on 195 producers of sugar beet in khorasan province in 2003 producers were selected based on stratified random sampling method. results of study showed that percent of  sugar (an impostor), type of seed, yield of sugar beet in the last ye...

a field experiment was carried out during 2001 in the experimental fields of sugar beet seed institute in karaj. the objective of this study was to determine the response of some quantitative and qualitative traits of three sugar beet lines subjected to continuous water stress and normal conditions. three sugar beet lines 7219-p.69, bp-karaj and 7112 as tolerant, semi tolerant and sensitive to ...

beet cyst nematode (heterodera schachtii schmidt). spreads extensively in different regions of sugar beet cultivation, and therefore many efforts are accomplished to prevent decrease of sugar and root yield caused by the disease. the most appropriate control method of this disease is improvement of resistant varieties. wild species of procumbentes in beta are very important because they contain...

sugar beet (beta vulgaris) is one of the hosts for different root-knot nematode species. in this study, firstly the effect of different inoculum levels including 250+250, 500, 500+250, 750, 500+500 and 1000 second stage juveniles of meloidogyne javanica were evaluated on a susceptible variety named jolgeh. the results showed that all inoculum levels were suitable for infection on sugar beet pla...

at the present time 33 sugar beet and 7 sugar cane industrial units are active in the country. in 2004, the national sugar production was about 1192 thousand tons, that 55 percent of it was produced from the sugar beet and the rest from the sugar cane. in this investigation the status of sugar beet root and sugar production during last 4 years is discussed. the theoretical capacity of 33 sugar ...

rhizomania is the most important disease of sugar beet in iran and some other parts of the world, and plays an essential role in decreasing sugar yield in fields. the best approach to control this disease is to use resistant varieties. tagging the resistance genes in breeding programs, by molecular markers is necessary. in this study, some breeding populations and commercial varieties of sugar ...

UNLABELLED SUMMARY Taxonomy: There are three members of the genus Polerovirus (family Luteoviridae) that induce yellowing of sugar beet: Beet mild yellowing virus (BMYV), Beet chlorosis virus (BChV) and Beet western yellows virus-USA (BWYV-USA, Fig. 1). Non-beet-infecting isolates of BWYV found particularly within Europe have now been re-named Turnip yellows virus (TuYV). Species-specific antib...