STUDY REGARDING THE WEED CONTROL IN GRAIN SORGHUM CROP.

Compared to corn, sorghum is more sensitive to the action of synthetic chemicals in the administered herbicides and most of the time the plant stagnates in growth for a few days, even if the application doses are moderate. As the spectrum of weeds is quite diverse in Romania, there are species that are difficult to control in sorghum culture, such as Sorghum halepense, Setaria ssp. or Echinochloa crus-gali L., in this research we tested several variants of weed control using herbicides applied in pre and post emergence. The most valuable variant in combating weeds in grain sorghum crop proved to be the variant with Dual Gold (S-metolachlor 960 g/l) 1.5 l/ha applied in pre-emergence + Trek P 334 SE (Pendimetalin 64 g/l + Terbuthylazine 270 g/l) 2.5 l/ha applied post-emergence, variant which had a calculated Abott's coefficient of 98.2%. The combination of Dual Gold (S-metolachlor 960 g/l) 1.5 l/ha + Casper 0.4 l/ha (5% prosulfuron+50% dicamba) also provided a high cultural hygiene assurance, and was close to the previous variant with a calculated coefficient of 97.5%. [ABSTRACT FROM AUTHOR]