Nitrogen deficiency vs. optimum-Barley

Symptoms
Severe N deficiency (right) results in poor yielding caused by a reduction of tiller number as well as diminished stem, ear and seed size.

Reasons
Nitrogen deficiency (right)

Cereals - Growth retardation

Symptoms
Characteristic symptoms of N deficiency are reduced vigor, smaller leaves and a pale green or yellowish leaf color. The symptoms first become visible on the old leaves which turn yellow and wither at progressing deficiency. Extreme N deficiency causes early senescence and diminished ear size.

Reasons
Nitrogen deficiency (left). Sulfur deficiency, low pH and root damage cause similar symptoms.

Cereals - Growth retardation

Symptoms
Characteristic symptoms of N deficiency (right) are reduced vigor, smaller leaves and a pale green or yellowish leaf color. The symptoms first become visible on the old leaves which turn yellow and wither at progressing deficiency. Extreme N deficiency causes early senescence and diminished ear size.

Reasons
Nitrogen deficiency (right). Sulfur deficiency, low pH and root damage cause similar symptoms.

Cereals - Chlorosis

Symptoms
Characteristic symptoms of N deficiency are reduced vigor, smaller leaves and a pale green or yellowish leaf color. The symptoms first become visible on the old leaves which turn yellow and wither at progressing deficiency. Necrosis starts on the leaf tip and progresses toward the leaf base. Extreme N deficiency causes early senescence and diminished ear size.

Reasons
Nitrogen deficiency(bottom). Sulfur deficiency, low pH and root damage cause similar symptoms. Symptoms of N and S deficiency in wheat and other small grains are very similar, thus a tissue analysis is often necessary to reveal the cause.

Cereals - Growth retardation

Symptoms
Severe N deficiency (left) results in poor yielding caused by a reduction of tiller number as well as diminished stem, ear and seed size.

Reasons
Nitrogen deficiency (left)

Cereals - Growth retardation

Symptoms
Starting on the older leaves, N deficiency causes chlorotic yellowing and stunted growth of cereal plants.

Reasons
Nitrogen deficiency. Symptoms of N and S deficiency in cereals are very similar, thus a tissue analysis is often necessary to reveal the cause.

Cereals - Growth retardation

Symptoms
Starting on the older leaves, N deficiency causes chlorotic yellowing and stunted growth of cereal plants. Tillering and ear size are reduced. Severe lack of N leads to early senescence.

Reasons
Nitrogen deficiency (right). Small grains are generally sensitive to insufficient N. Symptoms of N and S deficiency in cereals are very similar, thus a tissue analysis is often necessary to reveal the cause.

Cereals - Growth retardation

Symptoms
Severe N deficiency (right) results in poor yielding caused by a reduction of tiller number, stem and ear size.

Reasons
Nitrogen deficiency on rye

Nitrogen deficiency vs. optimum made worse by

Low or high pH soils
Sandy or light soils (leaching)
Low organic matter
Drought conditions
High rainfall (leaching) or heavy irrigation
Addition or high levels of non-decomposed organic matter/manure (eg straw)
Fast growing crops

Nitrogen is important for

Lusher, greener growth
Optimal tiller production
Increased grain yields and protein content
Improved grain quality

Yara recommended fertilizers for Nitrogen

YaraVita® LAST N™ 25-0-0

Cereals: 5 to 20 l/ha (2 - 8 l/acre). Apply from tillering to the end of the milk development stage in grain ripening (Zadoks G.S. 21 to 79). Water rate: 50 to 200 l/ha (20 to 80 l/acre). N.B. Note that later foliar nitrogen applications may raise grain nitrogen status.

Read more about YaraVita® LAST N™ 25-0-0

Other recommended products

YaraVera® AMIDAS™

The rate is dependent upon several factors such as soil and tissue analysis. Please refer to local advisers.