| Magnesium deficiency | |
|---|---|
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| A potato leaf showing magnesium deficiency |
Magnesium deficiency is a common and serious disorder which is made worse, not better, by standard feeding.
Identifying Features[]
Discolouration begins on lower leaves and moves upwards until all foliage is affected. Yellow areas may turn brown.
Treatment[]
Spray with Epsom salts (½oz/pint) or use a foliar spray containing magnesium.
Prevention[]
Use a fertilizer which contains magnesium (Mg).
Examples[]
| Brassica troubles |
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|---|---|
| Broccoli · Brussels sprout · Cabbage · Cauliflower · Kale · Kohl rabi · Radish · Swede · Turnip | |
| Adverse conditions | Blown sprouts · Bolting · Boron deficiency · Button cauliflower · Calcium deficiency · Heartless cabbage · Magnesium deficiency · Manganese deficiency · Molybdenum deficiency · Nitrogen deficiency · Split heart |
| Diseases | Anthracnose · Bacterial soft rot · Black leaf spot · Black rot · Brassica dark leaf spot · Club root · Downey mildew · Grey leaf spot (Brassica) · Turnip mosaic virus · Sclerotinia rot · White leaf spot · White leaf spot (Brassica) · White rust · Wire stem |
| Pests | Aphid · Cabbage aphid · Cabbage Moth · Cabbage root fly · Cabbage Whitefly · Cutworm · Diamondback moth · Flea beetle · Large White · Pigeon · Silver Y moth · Slug · Small White · Swede midge · Thrips |
| Corn troubles |
|
|---|---|
| Adverse conditions | Drought · Iron deficiency · Magnesium deficiency · Nitrogen deficiency · Nitrogen toxicity · Phosphorous deficiency · Sun scald |
| Diseases | Aspergillus ear and kernel rot · Anthracnose · Bacterial soft rot · Crazy top of corn · Grey leaf spot of corn · Charcoal rot · Corn smut · Corn stunt disease · Fasciation · Fusarium ear and stalk rot · Maize dwarf mosaic virus · Northern corn leaf blight · Pink root of onion · Pythium · Stewart's wilt |
| Pests | Aphid · European corn borer · Cutworm · Leafminer · Root-knot nematode |