Celery is a kind of high fibre food. Eating Celery frequently helps people to prevent from diseases such as hypertension and arteriosclerosis. Trace elements Deficiency such as manganese sulfate and ferrous sulfate occurs frequently when planting. Symptoms as follow:
Magnesium deficiency
Apply too much K Fertilizer will affect absorption to Mg, or when root system cannot get enough Mg to meet the plants’ demand, Mg deficiency occurs. At the moment, leaves are turn to light green color. This condition can be remedied by spraying 1% magnesium Sulfate Solutions three times, usually, once a week is enough.
Iron deficiency
This condition, iron deficiency, can be found in high pH alkaline Soil and calcareous soil or superfluous in soil; excessive dry or wet soil; low temperature environment. Fe deficient leaves show yellowish white. Generally, this condition can be corrected by spraying 0.21%-0.3% ferrous sulfate solutions onto leaves or reducing the P content by deep ploughing.
Zinc deficiency
Zinc deficiency is easy to be found in soil with pH>6, especially in calcareous soil. Symptoms of zinc deficiency include rolling leaf and pigment on stems. A common way to remedy zinc deficient is to apply zinc fertilizer with physiological acidic fertilizer or spray 0.05%-0.2% zinc sulfate solutions onto leaves.
