1. Zn2+
2. Cu2+
3. Hg2+
4. Mg2+
Hg2+
1. K
2. N
3. O
4. Mg
N
1. Mo
2. B
3. Zn
4. Mg
Mg
1. calcium
2. boron
3. iron
4. copper
iron
1. early flowering
2. yellowing
3. loss of pigment in petals
4. deep green foliage
yellowing
1. ZnSO4
2. ZnO
3. Zn
4. Zn2+
Zn2+
1. Mg2+
2. Fe2+
3. Zn2+
4. Cl-
Zn2+
1. S
2. Mg
3. Cu
4. Fe
Cu
1. leaching
2. percolation
3. conduction
4. transpiration
leaching
1. activation of enzymes
2. acting as enzyme cofactor
3. photosynthesis
4. sugar transport
sugar transport