Molybdenum deficiency-Potatoes

Reasons
Molybdenum deficiency Young plants can show deficiency symptoms if seed potatoes were grown on soils with low Mo content. Yellowing of leaf blades is similar to nitrogen or sulfur deficiency.

Molybdenum deficiency made worse by

Acid soils
Low pH
Low levels of soil organic matter

Molybdenum is important for

Nitrogen metabolism, pigment and chlorophyll synthesis
Beneficial for growth and yield

Yara recommended fertilizers for Molybdenum

YaraTera CHELATE 1089

Potatoes: Apply 2 kg/ha before planting (can be coated on pre-plant fertilizers) Apply a further 1 kg/ha at 3, 5, 7 weeks after planting. Can also be applied as a foliar application: Up to 150 g/100L water.

YaraTera CHELATE 1090

YaraVita MOLYTRAC 250

potatoes: 0.5 l/ha between 100% emergence and tuber initiation. Water rate: 50 to 200 l/ha.

YaraVita TRI-PHOLATE

Potatoes: Apply 2 kg/ha 1 week after 100% emergence. Apply a further 2 kg/ha at tuber initiation and a final 2 kg/ha at flowering. Water rate: 200 l/ha for tractor driven sprayer. 100,000 l/ha for application through irrigation system.