Cereals - Growth retardation
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.
Causes
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.
Causes
Nitrogen deficiency (left)
Sulphur 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.
Causes
Nitrogen deficiency (right)
Sulphur 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.
Causes
Nitrogen deficiency(bottom)
Sulphur 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.
Causes
Nitrogen deficiency (left)
Cereals - Growth retardation
Symptoms
Starting on the older leaves, N deficiency causes chlorotic yellowing and stunted growth of cereal plants.
Causes
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.
Causes
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.
Causes
Nitrogen deficiency
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 fertilisers for Nitrogen deficiency
YaraVita SAFE-N 300
Cereals: 10 to 20 l/ha from tillering to the end of the milk development stage in grain ripening (Zadoks G.S. 21 to 79). Repeat applications at 10 to 14 day intervals. Water rate: 200 l/ha. N.B. Note that later foliar nitrogen applications may raise grain nitrogen status.
Read more about YaraVita SAFE-N 300
