Duration of the vegetation period of pea collection specimens in the Eastern Siberia

The authors presented the results of study effect temperature regime and precipitation on duration growing season its components for crop Pisum sativum L. These studies were analyzed basis three-year experiments in conditions Eastern Siberia most early maturing samples selected. objects 20 collection varieties pea sowing Russian foreign selection. conducted accordance with methodological guidelines grain legume crops 2018-2020 forest-steppe zone Krasnoyarsk region, fields Research Institute Agriculture. soil experimental plot was common black earth heavyloamy. humus content arable layer 7.8 %, pH salt extract 6.8. Over three years experiment, nitrate nitrogen N-NO3 at time averaged 10.12 mg/kg, mobile phosphorus P2O5 high 23.26 mg/100 g; potassium K2O elevated 10.06 g (by Chirikov method). Agronomic techniques region. Clean fallow precursor. work aims to determine vegetation period influence hydrothermal it. tasks are different heat moisture supply years. In addition, another task is variability plants depending conditions, as well identify early-ripening varieties. identifined that maximum characteristic excessively moist 2020. longest «flowering - ripening» (38 49 days), shortest «sowing sprouting» (18 27 days). Duration characterized by medium (Vcf = 16.5 %). Directly proportional dependence amount (r 0.979) inversely average 0.982) revealed. For all periods, correlation terms negative, positive, except 0,867). recommend using Canadian selection variety Profi a 66 days maturity breeding