the main purpose of this study was to measure the level of technical efficiency of sugar beet producers and determination of factors affecting it. a sample of 144 producers in the main sugar beet growing areas of hamedan, nahavand, malayer and asadabad were selected by two stage cluster sampling method. data were collected through interviews during farming year of 2001-2002.technical efficiency...

the main objective of this study was to investigate the economic efficiency of investment in sugar beet breeding research in iran. the required information including the value and cost of sugar beet production in 2010 and the budget allocated to the sugar beet breeding research were obtained from the office of statistics and information technology of ministry of jihad-e-agriculture and agricult...

this study was carried out to determine the optimal irrigation intervals in sugar beet seed production fields and to evaluate the effects of irrigation at different growth stages of sugar beet seed bearing plants (cv. shirin) on seed qualitative and quantitative characteristics. the treatments were four irrigation intervals including a control (i1) (irrigation at three stages; planting, bolting...

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...

In modern conditions of political confrontation and economic sanctions, ensuring national security is becoming a priority direction state policy, not only in the long term, but also short term. The purpose this study to develop methodological support for assessing level industrial safety, which makes it possible identify latent threats that reduce its at each stage sugar beet business cycle. To...

Introduction Species of the genus Beta are recognized as sources of various viruses. A con­ siderable number o f viruses have been isolated from the species Beta vulgaris var. saccharifera (sugar beet) (Sutic et al. 1999). One of the viruses occurring in this plant all over the world is beet mosaic potyvirus (BtMV). This virus belongs to Potyviridae, a taxonomic family of easily aphid-transmitt...