Maize Cob Defects | Yara Ireland

Any maize cob abnormality needs to be analyzed before it can lead to severe maize yield loss.

Phosphorus

Phosphorus deficiency can cause the maize cob to be defective, by taking on a distorted, twisted appearance with poor grain set at the point of the cob.

Potassium

Potassium deficient plants, show cobs smaller in size and can have incomplete maize grain set at the tip end.

Copper and Boron

Copper deficient maize grains are deformed, leading to loss of yield and grain quality. Boron deficient grain set are restricted, with the maize cob having many missing kernels and a few large grains.

IMAGE cob size potassium — Optimum conditions (left) vs. potassium deficiency (right) in maize cobs

Recommended Yara Fertilizers for Maize

YaraBela CAN

27% N - Granular calcium ammonium nitrate based nitrogen fertilizer for use on any crop.

YaraBela AXAN

27% N + 3.6% S - Uniform compound granular nitrogen and sulphur fertilizer for use on all crops.

YaraVita MAIZE BOOST

A liquid micronutrient fertilizer containing a high concentrations of phosphate together with zinc, magnesium and potash for foliar application to maize and other crops.

YaraVita FOLIAR POTASH

A liquid foliar fertilizer containing 500 g/l potash for foliar application to provide additional potassium or correct potash deficiencies in a wide range of crops.

YaraVita BORTRAC 150

A liquid micronutrient fertilizer containing 150 g/l boron for foliar application to provide additional boron or to treat boron deficiencies in a wide range of crops.

YaraVita THIOTRAC 300

A fully formulated liquid fertilizer solution containing 300 g/l sulphur for foliar application to prevent and treat sulphur deficiencies on a wide range of crops.

YaraVita ZINTRAC 700

A fully formulated flowable liquid micronutrient fertilizer containing 700 g/l zinc for foliar application to prevent and treat zinc deficiency on a wide range of crops.