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Agriculture · Q298

Plant Pathology

Graduate and Post Graduate · Agriculture · question 298

Q298

Iron deficiency starts when it is

A.
< 55 ppm
Answer
B.
55 - 60 ppm
C.
60 - 65 ppm
D.
80 ppm

Answer: Option A

Solution

Answer: Option A
Solution:
Iron deficiency starts when it is < 55 ppm.
Iron (Fe) deficiency chlorosis is a major nutritional disorder for crops growing in calcareous soils and causes decreases in vegetative growth as well as marked yield and quality losses.
Soil iron concentration is high, but can become unavailable for absorption if soil pH is higher than 6.5.