What Are the Specifics of Fertilizing Rapeseed with Copper Fertilizers?

To ensure uniform copper uptake by rapeseed plants, copper fertilizers are applied to the soil (at least 5 kg/ha Cu). On humus-rich soils, this is sufficient at least—

To ensure uniform copper uptake by rapeseed plants, copper fertilizers are applied to the soil (at least 5 kg/ha Cu). On humus-rich soils, this is sufficient for at least five years, and on soils low in humus—for 10 years. Hryhorii Hospodarenko, Doctor of Agricultural Sciences and professor at Uman National University, writes in an article titled “Hidden Hunger” in The Ukrainian Farmer magazine. For foliar feeding, 70 g/ha Cu in chelate form is applied as early as autumn, at the 6–8-leaf stage (especially on humus-rich soils with a high risk of winterkill); 70 g/ha Cu at the budding stage; and, during flowering, 30 g/ha Cu as copper chelate. Copper chelates are applied together with pesticides. Copper applied in chelate form that is not absorbed through the leaves runs off onto the soil, is partially leached down through ...