Nitrogen deficiency in Maize

症状
Affected plants show stunted, sparse growth. The leaves turn uniformly pale green. The oldest leaves on the bottom show yellow discoloration and subsequent necrosis proceeding from the leaf tip.

原因
Nitrogen deficiency Sulphur deficiency can cause similar symptoms but starts on the younger leaves, whereas paling due to N deficiency is detectable on older leaves first.

症状
Reduced cob size and uncomplete cob fill due to N deficiency.

原因
Nitrogen deficiency on cob (right)

症状
Affected plants show spindly, sparse growth. On the older leaves, V-shaped yellowing on the leaf tips progresses towards the base, so that leaves finally turn uniformly pale green/yellow. Stalks get a reddish discoloration. The oldest leaves on the bottom become necrotic.

原因
Nitrogen deficiency Sulphur deficiency can cause similar chloroses but starts on the younger leaves, whereas paling due to N deficiency is detectable on older leaves first.

症状
Leaves turn pale green/yellow beginning along main vein and then from leaf tip (V-shape). Necrosis develops from leaf tip as deficiency continues.

原因
Nitrogen deficiency

症状
Leaves turn pale green/yellow beginning along main vein and then from leaf tip (V-shape). Necrosis develops from leaf tip as deficiency continues.

原因
Nitrogen deficiency

症状
Affected plants show stunted, sparse growth. The leaves turn uniformly pale green.

原因
Nitrogen deficiency Sulphur deficiency can cause similar chloroses but starts on the younger leaves, whereas paling due to N deficiency is detectable on older leaves first