At the end of the first ten days of July the second egg-laying of the corn borer, one of the most harmful corn pests, will begin. 10–12 days later mass hatching of larvae will occur. Given this, entomologists recommend treating corn crops with insecticides. The latter mix well in a tank with special fertilizers, so it is possible to feed corn with the necessary nutrients.
In this period three main problems in corn nutrition are usually noted:
The first is hidden boron deficiency. Its shortage shows as gaps in the rows of kernels, a consequence of insufficient viability of pollen grains. The problem is easily eliminated by foliar feeding of plants with the special fertilizers ECOLINE Boron (Organic) or ECOLINE Boron (Premium) at 0.5–1.0 l/ha. Boron feeding in this period promotes accumulation of sugars, one of the main building materials in the plant.
The second problem is potassium deficiency. It shows visually first as paling of the edges of the leaf blade and then drying of the whole leaf. It is observed first on lower leaves and later spreads to leaves of the next tiers, which seriously lowers the plants' yield potential. Leaf drying can be halted by foliar feeding with the special fertilizer ECOLINE Phosphite (K) at 1.0–1.5 l/ha.
The third problem is hidden microelement deficiency and hidden potassium deficiency, which lead to lower yield. To prevent this we recommend using the complex fertilizer ECOLINE Corn (Chelates) at 1.0–2.5 l/ha.
Signs of potassium deficiency on corn