Nitrogen deficiency-Potatoes

症状
Plants (right) are stunted and leaves show a uniform chlorotic pale green / yellow colouration

原因
Nitrogen deficiency Sulphur deficiency, root parasites (eg PCN), deep drilling of tubers, nightfrosts, water shortage or heavy metal toxicity can cause similar symptoms.

症状
Leaves (right) are stunted and leaves show a uniform chlorotic pale green/yellow colouration

原因
Nitrogen deficiency Sulphur deficiency, root parasites (eg PCN), deep drilling of tubers, nightfrosts, water shortage or heavy metal toxicity can cause similar symptoms.

症状
Plants on the left side show uniform pale green leaves and stunted growth. Older leaves usually affected first and these then turn yellow and shed early.

原因
Nitrogen deficiency. Sulphur deficiency, root parasites (eg PCN), deep drilling of tubers, nightfrosts, water shortage or heavy metal toxicity can cause similar symptoms. Often seen as patches due to poor fertiliser application or soil type