Iron deficiency starts when it is
A. < 55 ppm
B. 55 - 60 ppm
C. 60 - 65 ppm
D. 80 ppm
Answer: Option A
Solution(By Examveda Team)
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.
Related Questions on Plant Pathology
Which photosynthetic bacteria possess both PS I and PS II?
A. Purple sulphur bacteria
B. Cyanobacteria
C. Purple nonsulphur bacteria
D. Green sulphur bacteria
Join The Discussion