Näringsämnen

N Kväve
P Fosfor
K Kalium
Mg Magnesium
Ca Kalcium
S Svavel
B Bor
Cu Koppar
Fe Järn
Mn Mangan
Mo Molybden
Zn Zink

Stråsäd - Chlorosis

Symptom
Proceeding from the leaf tip, older leaves become pale green with beading of chlorophyll (easy to reveal by holding leaf to sunlight). Striped appearence because of interveinal chlorosis. Small bright freckles spread over the leaf. Leaf tip shows beginning necrosis.

Anledningar
Magnesium deficiency

Stråsäd - Growth retardation

Symptom
Older leaves become pale green with beading of chlorophyll. Chlorosis and Necrosis of leaf margins, proceeding from leaf tip, can be seen in more severe cases. Easy to reveal by holding leaf to sunlight.

Anledningar
Magnesium deficiency Drought can also cause marginal necrosis.

Stråsäd - Growth retardation

Symptom
Older leaves become pale green with beading of chlorophyll. Chlorosis and Necrosis of leaf margins, proceeding from leaf tip, can be seen in more severe cases. Plant growth is stunted. Easy to reveal by holding leaf to sunlight.

Anledningar
Magnesium deficiency Drought can also cause marginal necrosis.

Stråsäd - Chlorosis

Symptom
Leaves appear pale green with beading of the chlorophyll. Leaves with more severe Mg deficiency (centre) show leaf margin necrosis.

Anledningar
Magnesium deficiency Drought can cause similar symptoms of margin necrosis.

Stråsäd - Chlorosis

Symptom
Affected leaves appear pale green with beading of the chlorophyll.

Anledningar
Magnesium deficiency

Stråsäd - Chlorosis

Symptom
Affected leaves appear pale green with beading of the chlorophyll.

Anledningar
Magnesium deficiency

Magnesium deficiency förvärras av

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

Magnesium är viktigt för

  • Better crop establishment
  • Improved winter hardiness and tillering
  • Better grain quality

Yaras rekomendationer för Magnesium

YaraVita MAGFLO 300

YaraVita MAGFLO 300

Cereals: 2-4 l/ha at 2 leaf stage to first node detectable (G.S. 12-31). For moderate to severe deficiency, repeat applications at 10-14 day intervals. 2 l/ha at flag leaf ligule just visible to anthesis complete (G.S. 39-69). Water rate: 200 l/ha.

Läs mer om YaraVita MAGFLO 300

Andra rekomenderade produkter

YaraVita CROP BOOST
Cereals: 5 l/ha at tillering. Repeat at 10 to 14 day intervals if necessary. Water rate: 200 l/ha.
YaraVita GRAMITREL
Cereals: 1 to 3 l/ha from the 2 leaf stage to second node detectable (Zadok's G.S. 12 to 32). Repeat applications at 10 to 14 day intervals, within this timing, if necessary. For autumn sown crops, an application prior to winter dormancy may also be beneficial. In addition, 1 l/ha from second node detectable to flag leaf fully emerged (Zadoks G.S. 32 to 39). Water rate: 50 to 200 l/ha. Seed Dressing: 3 to 6 litres per tonne.
YaraVita MAGPHOS K
Cereals: 5 l/ha at tillering. Repeat at 10-14 day intervals if necessary. Also apply from ear emergence until the end of flowering (Zadok's G.S. 51 to 69). Water rate: 200 l/ha.