Nutrients

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

Strawberries - Chlorosis

Symptoms
Leaf margins are chlorotic and then scorched. This spreads to the intercostal areas. The leaf becomes bright yellow with necrotic tints. The basal part of the leaf blade remains light green at the last. Mature leaves are affected first. Symptoms worsen with increased deficiency and leaf age.

Reasons
Magnesium deficiency. Deficient leaf blades contain less than 0.1 % magnesium on dry basis. Potassium deficiency can cause similar symptoms. Leaves with salt burn show similar symptoms.

Strawberries - Chlorosis

Symptoms
Leaf margins are chlorotic and then scorched. This spreads to the intercostal areas. The leaf becomes bright yellow with necrotic tints. The basal part of the leaf blade remains light green at the last. Mature leaves are affected first. Symptoms worsen with increased deficiency and leaf age. The young central leafs remain green.

Reasons
Magnesium deficiency. Deficient leaf blades contain less than 0.1 % magnesium on dry basis. Potassium deficiency can cause similar symptoms. Leaves with salt burn show similar symptoms.

Strawberries - Necrosis

Symptoms
Leaf margins are chlorotic and then scorched. This spreads to the intercostal areas. The leaf becomes bright yellow with necrotic tints. The basal part of the leaf blade remains light green at the last. Mature leaves are affected first. Symptoms worsen with increased deficiency and leaf age. The young central leaves remain green.

Reasons
Magnesium deficiency. Deficient leaf blades contain less than 0.1 % magnesium on dry basis. Potassium deficiency can cause similar symptoms. Leaves with salt burn show similar symptoms.

Strawberries - Chlorosis

Symptoms
Leaves show interveinal chlorosis with spotty necrosis on their margins and dark discolourations between the veins. Mature leaves are affected first. Symptoms worsen with increased deficiency and leaf age. Finally the oldest leaves turn completely brown while the young central leaves remain green.

Reasons
Magnesium deficiency. Deficient leaf blades contain less than 0.1 % magnesium on dry basis. Potassium deficiency can cause similar symptoms, but normally the basal part of the leaf is affected, too. Leaves with salt burn show similar symptoms.

Strawberries - Chlorosis

Symptoms
Leaves show interveinal chlorosis with spotty necrosis on their margins and dark discolourations between the veins. Mature leaves are affected first. Symptoms worsen with increased deficiency and leaf age. Finally the oldest leaves turn completely brown while the young central leaves remain green.

Reasons
Magnesium deficiency. Deficient leaf blades contain less than 0.1 % magnesium on dry basis. Potassium deficiency can cause similar symptoms, but normally the basal part of the leaf is affected, too. Leaves with salt burn show similar symptoms.

Magnesium deficiency made worse by

  • Sandy soils
  • Acidic soils
  • Potassium rich soils
  • Soils receiving high potash applications
  • Cold wet periods

Magnesium is important for

  • Improved photosynthesis
  • Green healthy foliage
  • Reduced yellowing on older leaves

Yara recommended fertilizers for Magnesium

YaraVita® BUD BUILDER™WP

YaraVita® BUD BUILDER™WP

Strawberry: 5 lbs/acre applied from green tip to pink bud to just prior to start of flowering in 10-14 day intervals. Apply 1 to 3 times from petal fall thru berry sizing. Also, 5 lbs/acre post-harvest in 21 to 28 day interval up to leaf senescence. Water rate: minimum 20 gallons/acre. Foliar application of Bud Builder may leave a white residue-deposit on the leaf or crop when applied close to harvest.

Read more about YaraVita® BUD BUILDER™WP

YaraVita® MAGPHOS™

YaraVita® MAGPHOS™

Strawberries (field grown): Non everbearing varieties: 3 applications of 1-2 quarts/acre from start of flowering. Repeat applications 7 to 10 day intervals. Everbearing varieties: 6 applications of 1-2 quarts/acre. Do not apply successive applications at intervals of less than 10 to 14 days. Water rate: 30 to 50 gallons/acre.

Read more about YaraVita® MAGPHOS™

YaraVita® MAGTRAC™

YaraVita® MAGTRAC™

Strawberries (field grown): 2 quarts/acre at green bud. Repeat if necessary at 10 to 14 day intervals. Water rate: 50 gallons/acre.

Read more about YaraVita® MAGTRAC™