Nutrients

N Nitrogen
P Phosphorus
K Potassium
Mg Magnesium
Ca Calcium
S Sulfur
B Boron
Cu Copper
Fe Iron
Mn Manganese
Zn Zinc
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Tomato - Deformation

Symptoms
Affected leaves are dark green with chlorotic brightenings along the main vein, in the middle of the leaf blade. The tissue looks strong and leathery, being slightly cupped downward.

Reasons
Zinc deficiency. High phosphorus levels or anaerobic conditions can induce deficiencies. A lack of Zinc occurs only rarely in greenhouse crops.

Tomato - Deformation

Symptoms
Affected leaves are dark green with chlorotic brightenings along the main vein, in the middle of the leaf blade. The tissue looks strong and leathery, being slightly cupped downward.

Reasons
Zinc deficiency. High phosphorus levels or anaerobic conditions can induce deficiencies. A lack of Zinc occurs only rarely in greenhouse crops.

Tomato - Deformation

Symptoms
Affected leaves are dark green with chlorotic brightenings along the main vein, in the middle of the leaf blade. The leaf tissue looks strong and leathery, being slightly cupped downward. Shortened internodes give the plant a dense, compressed and stiff habitus.

Reasons
Zinc deficiency. High phosphorus levels or anaerobic conditions can induce deficiencies. A lack of Zinc occurs only rarely in greenhouse crops.

Zinc deficiency made worse by

  • Organic soils
  • High pH soils
  • Soils rich in phosphorus
  • Soils receiving high phosphorus application
  • Cold wet conditions

Zinc is important for

  • Correct functioning of many enzyme systems
  • Synthesis of nucleic acid
  • Auxin metabolism
  • Important for internode elongation and leaf development

Yara recommended fertilizers for Zinc

YaraVita® MANCOZIN™

YaraVita® MANCOZIN™

Tomato (field grown): 1 to 2 pints/acre at the 4 to 6 leaf stage. Repeat when required at 10 to 14 day intervals. Water rate: 3 to 150 gallons/acre.

Read more about YaraVita® MANCOZIN™

YaraVita® ZINTRAC™

YaraVita® ZINTRAC™

Tomatoes (field grown): 1 pint/acre when plants are at 4 to 6 leaf stage. Water rate: 3 to 50 gallons/acre. For use in Wisconsin: YaraVita Zintrac can be applied to this crop in Wisconsin requiring a medium to high level of zinc.

Read more about YaraVita® ZINTRAC™

NUTRA-PHOS CALZINC

NUTRA-PHOS CALZINC

Tomato (field grown): 3 to 10 lb. per acre per application. One to three applications are advised at 3 to 4 week intervals, starting at period prior to bloom. Repeat as needed. Apply aerial applications in at least 5 gallons/acre and ground applications in at least 10 gallons/acre; however, when total application gallonage is 25 gallons per acre or less, DO NOT mix more than 1 lb. of this product per gallon of water.

Read more about NUTRA-PHOS CALZINC