Copper deficiency vs. optimum-Tomato

Change crop

Nutrients

Tomato - Wilting

Symptoms
Affected plants look less vigorous; they have less foliage with reduced leaf blade. Intercostal leaf areas may become pale green with whitish to yellow-brown necrosis.

Reasons
Copper deficiency (left)

Copper deficiency vs. optimum made worse by

Organic soils
Chalky soils
Sandy soils
Reclaimed heathland
High nitrogen applications

Copper is important for

Photosynthesis
Enzyme process
Manufacturing lignin
Protein synthesis

Yara recommended fertilizers for Copper

YaraTera CHELATE 1089

Tomato: Field Grown - 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

YaraTera MICROFLEX GA

Tomato: Apply 2 g of YaraTera Microflex GA per 100L of water in the stock solution.

YaraVita COPTRAC 500

Tomato (field grown): 0.5 l/ha at the 4 to 6 leaf stage, (or 35 days after transplanting). Water rate: 200 l/ha.

YaraVita TRI-PHOLATE

Tomato: Apply 2 - 4 kg/ha during the growing season through the irrigation water. Alternatively, apply 0.5 kg/ha as a foliar spray. Repeat at 10 to 14 day intervals as necessary, with a maximum of six applications per season. Water rate: 200 l/ha.