the control of broomrape (orobanche aegyptiaca) in tomato (lycopersicum esculentum mill) farms

broomrape would have irreversible effects on tomatoes in all growth stages and the damage would be unrecoverable. in order to chemically control orobanche spp with consumption of bio-fertilizer in tomato cultivation, an experiment as factorial based on complete randomized blocks design in three replications and 12 plots was carried out at a farm which is located in mahabad city (iran). in this experiment, the experimental factors were including: a- sulfosulfuron 35 g/ha in three levels (application, at 40 days after transplanting of seedlings, application at 60 days and after sample transplanting without any chemical spraying), b and c: bio- fertilizers, barvar -2 and nitrajin in two levels (application and non-application of bio-fertilizer), were taken place. the results showed that sulfosulfuron treatment at the rate of 35 gr/ha, with- twice application of 40 and 60 days after transplanting of seedlings decreased the biomass of orobanche aegyptiaca in surface level and also it was possible to decrease the biomass per tomato bush and orobanche aegyptiaca biomass to amount of 75%, 57% and 60% respectively compare to the main treatment without applying any kind of spray application. the applied bio-fertilizer-2 decreased the amount of fruit and economical function of tomato. the applying phosphate biofertilizer-2 resulted in a decrease in economical function of lycopersicum esculentum and number of ripen fruits. however none of the applied treatment was influential on diameter and weight of ripen fruits.