Whitish band on the side of the midrib, stunting

This situation looks like another nutrient deficiency problem. Notice the whitish band on the side of the midrib beginning at the base of the leaf and extending toward the tip. This characteristic indicates the problem is zinc deficiency. Internodes of the stalk are often shortened as a consequence of zinc deficiency, resulting in stunting of the plant. Zinc shortages are most prevalent in high pH and sandy soils and are often enhanced by erosion and cool, wet soils.