Effects of nozzle type and adjuvant selection on common lambsquarters (<i>Chenopodium album</i>) and johnsongrass (<i>Sorghum halepense</i>) control using nicosulfuron in corn

Abstract Weed control in corn is a major challenge due to increasing problems with highly dominant weed species and herbicide resistance evolution. Common lambsquarters johnsongrass constitute up 80% 90% of the population many spring crops, such as soybean [ Glycine max (L.) Merr.], sunflower ( Helianthus annuus L.), corn, Serbia. Currently, acetolactate synthase–inhibiting herbicides, systemic selective sulfonylurea nicosulfuron, are most commonly used for chemical those species. A better understanding impact nozzle type adjuvant use on nicosulfuron efficacy can help improve common minimize development. Field trials were conducted Serbia from 2020 2022 evaluate two adjuvants (a non-ionic surfactant [NIS] mineral fertilizer ammonium sulfate [AMS]) types (drift-reducing nozzles flat-fan nozzles) using nicosulfuron. Satisfactory biomass reduction (83% 87%) 97%) was achieved after application. Adding NIS increased (94% 98%) (90% 100%) independently used. Selection did not show consistent effects control. Nicosulfuron both compared solo species, Extended Range (XR) TeeJet ® average resulted higher Turbo induction. AMS lower (65% 78% 61% 91% johnsongrass, respectively). Corn grain yield predominantly influenced by annual meteorological conditions added This research suggests that addition an essential factor successful enables drift-reducing nozzles.