谷物 - Chlorosis
症状
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.
原因
Magnesium deficiency
谷物 - Growth retardation
症状
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.
原因
Magnesium deficiency
Drought can also cause marginal necrosis.
谷物 - Growth retardation
症状
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.
原因
Magnesium deficiency
Drought can also cause marginal necrosis.
谷物 - Chlorosis
症状
Leaves appear pale green with beading of the chlorophyll. Leaves with more severe Mg deficiency (centre) show leaf margin necrosis.
原因
Magnesium deficiency
Drought can cause similar symptoms of margin necrosis.
谷物 - Chlorosis
症状
Affected leaves appear pale green with beading of the chlorophyll.
原因
Magnesium deficiency
谷物 - Chlorosis
症状
Affected leaves appear pale green with beading of the chlorophyll.
原因
Magnesium deficiency
Magnesium deficiency使变得更糟
- Sandy soils
- Acidic soils
- Potassium rich soils
- Soils receiving high potash applications
- Cold wet periods
镁很重要
- Better crop establishment
- Improved winter hardiness and tillering
- Better grain quality
对于镁雅苒推荐的产品是
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.
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