in this research, the effect of crops such as corn, wheat, sugar beet and clover as previous crop on incidence of leaf and crown wart disease of sugar beet was studied. in the first year, corn, wheat, clover and sugar beet were planted as previous crop in a randomized complete block design with four replications. the amounts of turnover of nitrogen to the soil due to crop residue and their effe...

to evaluate yield and productivity indices of maize and sugar beet intercropping with different planting ratios, a field experiment was conducted in randomized complete block design with three replication at hamedan province in nahavand, in 2013. the planting ratios were 100:0, 75:25, 50:50, 25:75 and 0:100 (maiz: sugar beet) using replacement method. results showed that intercropping had signi...

in order to study the effects of planting date and sugar beet cultivars on infection to curly top virus, vector population, damping off, root rot, and sugar yield, an experiment was conducted in mobarakeh region during 1999-2000 in a split plot design. the main factor was three planting dates and sub factor was six sugar beet cultivars: ic1 as a susceptible cultivar to beet curly top, t41r, 723...

sugar beet is one of the major products in qazvin plain that allocated most of planting areas to itself after wheat, barley and corn. in recent years, restriction on water resources decreased sugar beet planting area in this plain. therefore, in this study, the effects of increase in sugar beet planting area on planting pattern, grower's gross profit, and inputs utilization under water sho...

in order to study the possibility of control of heterodera schachtii  in sugarbeet fields through integration of rotation with non- host crops and resistant catch crops and their effects on quantitative and qualitative traits of sugarbeet, this study was started from 2002 for three years in esfahan province. the experiments were carried out in a randomized complete block design with eight treat...

four sugar beet genotypes with different reactions to root rot pathogens were evaluated for resistance to important root rot agents including pythium aphanidermatum, phytophthora drechsleri, rhizoctonia solani ag-2-2 and r. solani ag-4. inoculums for pythium and phytophthora were 3-5 day actively growing colony of the pathogens on cma medium, while for rhizoctonia isolates were nine infected co...

Habitat disturbance affects numerous ecosystem components and processes, but its effect on continuous soybean system is less available. Soybean was seeded following six preceding crops, including grain soybean (Glycine max L. Merill.), wheat (Triticum aestivum L.), sugar beet (Beta vulgaris L.), tobacco (Nicotiana tabacum L.), corn (Zea mays L.) and hemp (Cannabis Satia L.), on a Mollisol ...