Nitrogen Deficiency vs. Healthy Plant - Oats

Symptom description

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.

Made worst 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.

Important for

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

Cause description

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

Yara recommends

YaraVita CROPLIFT PRO

Cereals: 2.5 kg/ha. Repeat at 10 to 14 day intervals as necessary. Avoid applications during flowering. Water rate: 200 l/ha.

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.