Affiliation:
1. I. V. Michurin Federal State Budgetary Research Center
2. I. V. Michurin Federal State Budgetary Research Center;
FGBOU IN Michurinsky GAU; FGBOU VO TSU named after G. R. Derzhavin
Abstract
Potassium is very important for apple tree physiology. Apple plants are grown only in the open air and the uptake of potassium depends on weather and people cannot directly influence it. We have studied the relationship between potassium availability depending on the rate of soil application to the soil, foliar fertilizing and weather conditions in the experimental high-density apple orchard of the I.V. Michurin Federal Scientific Center in 2020 and 2021. Trees of the Ligolcultivar were grafted on rootstock 62-396, planting pattern 1,2×4,5 m (1852 tr./ ha). Potassium levels in the leaves were weakly correlated with air temperature (r = 0.46...0.50) and humidity (0.33...0.52), a stronger correlation was with soil temperature (0.57...0.70).
Publisher
Federal State Budgetary Scientific Institution All-Russian Horticultural Institute for Breeding Agrotechnology and Nursery