In 2007 a new Stemphylium leaf spot disease of Beta vulgaris (sugar beet) spread through the Netherlands. Attempts to identify this destructive Stemphylium sp. in sugar beet led to a phylogenetic revision of the genus. The name Stemphylium has been recommended for use over that of its sexual morph, Pleospora, which is polyphyletic. Stemphylium forms a well-defined monophyletic genus in the Pleo...

many fungi cause sugar beet root rot during various stages of the plant growth. among them rhizoctonia spp. induce crown rot, dry rot and violet root rot on sugar beet (whitney and duffos,1986). root rot caused by phytophthora drechsleri has been observed in fields with excessive moisture (habibi,1975). pythium aphanidermatum has been recognized as one of the causal agents of sugar beet, dampin...

sugar beet is an important crop from the point of production and consumption. in this case, fars province is one of the largest producers iniran. the purpose of this study was to determine the effective factors on sugar beet supply. accordingly, time series information of the crop was collected from 1990 to 2004 infarsprovince and were analyzed through nerlove partially adjustment model that is...

a strength of agricultural production cooperatives is improving the technical knowledge of their members which is along with their function in large-scale development. one of the main obstacles to the success of cooperatives is their inability in improving the technical knowledge of their members. the current study evaluates the role of production cooperatives of fars province, iranin improving...

introduction crop productivity is highly constrained by water and nitrogen limitations in many areas of the world (kalra et al., 2007). therefore, there is a need to investigate more on nitrogen and water management to achieve higher production as well as quality. irrigated sugar beet in the cropping systems of khorasan province in northeastern of iran accounts for about 34% of the land area un...

this study aimed at determining the efficiency of sugar beet growers in borujerd city, iran. data were collected from 2010-11 growing season by random sampling of sugar beet growers and filling 100 questionnaires and analyzed using data envelopment analysis (dea) method. results showed that the average technical, economical and special efficiencies were 0.83, 0.79, and 0.84 in fixed output stat...

Beet necrotic yellow vein virus (BNYVV) is a member of the genus Benyvirus (21,22) and causes the disease known as rhizomania. It often is reported to be the most important sugar beet (Beta vulgaris L.) virus (17). BNYVV is transmitted by the plasmodiophorid, Polymyxa betae Keskin (1,2,6). In the United States, the virus first was identified in California in 1984 (5) but now occurs in every maj...

in order to study the effect of genotype × environment interaction and stability of sugar beet varieties, four cultivars, including shirine, zarghan, laetitia and 7112 hybrid were planted in five major areas near to sugar beet factory of biseton as kangavar, sahneh, chamchamal, dinavar and ravansar for three years (2006-2008) using a randomized complete block designs, with three replications. a...