In the early stages of plant nitrogen deficiency, the most obvious symptoms are:
A) brown spots and tiny holes on the underside of most leaves.
B) yellowish colors in the oldest leaves.
C) purpling of the youngest leaves.
D) brown edges on leaves scattered randomly all over the plant.
E) yellowing of the youngest leaves.
Question 2
A deficiency of N typically ________ the maturity of annual plants.
A) delays B) does not affect C) hastens