Sulphur deficiency-Potatoes

症状
The pale green/yellow leaves (left) are reduced in size and growth may be stunted. Often seen on younger leaves first.

原因
Severe Sulphur deficiency. Nitrogen deficiency, nightfrosts, water shortage or heavy metal toxicity can cause similar symptoms. May occur in patches due to soil type.

症状
The pale green leaves (left) are reduced in size and growth is stunted. Symptoms often seen on younger leaves first.

原因
Sulphur deficiency. Nitrogen deficiency, nightfrosts, water shortage or heavy metal toxicity can cause similar symptoms.

症状
The entire foliage - beginning at the younger leaves - turns pale green. Additionally, a purple tint may occur on stems, leaf stalks and leaf edges. The veins are often lighter than blade.

原因
Sulphur deficiency. Nitrogen deficiency, nightfrosts, water shortage or heavy metal toxicity can cause similar symptoms.

症状
Symptoms start on young leaves. They are pale yellow and smaller than normal. The youngest leaves are bright yellow.

原因
Sulphur deficiency on leaves Nitrogen deficiency produces similar symptoms but starts on older leaves.