BN-11891 
The two castorbean leaves at the left were stunted by zinc deficiency. At right, 
a normal leaf of the same age. 
a LOTT AN 
Onions grown on soil that does not provide them with enough zine are severely 
stunted and have yellow, crooked tops. At left, normal onions of the same variety 
and age. 
BN-11892 
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