Zinc and Bo deficiency occurs in many regions of the world, especially rice growing areas in Asia in general and in Vietnam in particular, sandy soils and soils with light mechanical composition are easily washed away.. , strong erosion, soils poor in organic matter...... often deficient in Bo and Zinc..

Zinc and Bo deficiency occurs in many regions of the world, especially rice growing areas in Asia in general and in Vietnam in particular, sandy soils and soils with light mechanical composition are easily washed away.. , strong erosion, soils poor in organic matter...... often deficient in Bo and Zinc..

Zinc and Bo deficiency occurs in many regions of the world, especially rice growing areas in Asia in general and in Vietnam in particular, sandy soils and soils with light mechanical composition are easily washed away.. , strong erosion, soils poor in organic matter...... often deficient in Bo and Zinc..