Question

Which crop is affected most by manganese deficiency in sandy soil?

Answer 1

Manganese (Mn) is an essential plant mineral nutrient, playing a key role in several physiological processes, particularly photosynthesis. Manganese deficiency is a widespread problem, most often occurring in sandy soils, organic soils with a pH above 6 and heavily weathered, tropical soils.

Answer 2

Palms, especially oil palms, grown in sandy soil is mostly affected by manganese deficiency.

Explanation:

• Manganese deficiency occurs in sandy soil enriched with rich organic matter.

• High pH, organic content or cold temperature lowers the availability of manganese for the plants in sandy soil.

• The symptoms of manganese deficiency in palms include:

1. Young leaf fronds that are chlorated
2. Chloration is more visible on the top surface of the leaves that are exposed to sun
3. Longitudinally running necrotic streaks on leaves.  
4. Curling, withering and falling of leaves.