Influence of diet, growth stimulators and means of protection on the productivity of milk thistle in the steppe zone of the Volga region

The results of studies milk thistle productivity depending on soil and climatic conditions, doses timing mineral fertilizers, microelements, growth stimulants, plant protection products are presented. It was revealed that the formation assimilation apparatus biomass is directly related to regime nutrition, treatment seeds, crops with stimulants products. maximum leaf area (48.0 thousand m2/ha) dry (4.8 t/ha) were in phase beginning fruit when fertilizers applied at a dose N90P90K60 (1.50 t/ha), which higher than control (without fertilizers) by 0.6 t/ha (40.0%). In wet years, increase seed yield after application 1.2–1.5 times compared years characterized drought. Various had significant effect oil content: optimal (N90P90K60), it increased 30.2%, 12.0% control. content flavolignans 3.70%, protein - up 23.7% (by 2.90 19.1%, respectively). apllication stimulator Gibbersib combination microelements (Gumat 7) against background contributed more intensive development thistle, also germination both laboratory field during entire growing season 5.2–8.3%) time harvesting 2.8–8.2%). highest seeds (1.06 complex microfertilizer Humat 7 stimulator, respectively, moderate dose.