KARTOSHKA YETISHTIRISHDA URUG‘–TUPROQ–O‘SIMLIK MAJMUIGA ULTRABINAFSHA NURLANISH BILAN ISHLOV BERISHNING SAMARADORLIGI

The paper examines the effect of combined pre-sowing ultraviolet (UV) irradiation of soil and seed tubers on potato emergence. Five irradiation variants at 10–50 cm from the source (0.42–0.76 mJ/cm²) and an untreated control were tested on cv. Santa in three replications. On day 15 after planting, emergence in all UV variants exceeded the control (56.7 %), reaching 63.3–83.3 %. The best result was obtained at 30 cm and 0.56 mJ/cm² (83.3 %; +26.6 percentage points over control, p = 0.047). Treated plots showed little Colorado potato beetle infestation; the trial used no fertilizers or chemical protection.

Hali tarjima qilinmagan