Table 2.
Agronomic biofortification of zinc.
| Crop | Treatment | References |
|---|---|---|
| Cereals | ||
| Maize | Soil application of ZnSO₄.7H₂O @ 2.5, 5 and 7.5 kg/ha | (27) |
| Aromatic rice | Soil and foliar application (at flowering) of zinc as ZnSO₄.7H₂O | (28) |
| Basmati rice | Different Zn sources applied at the rate 5 kg Zn/ha | Singh and Shivay (29) |
| Rice | Soil and foliar sprays (two) at maximum tillering and panicle initiation stage with different sources of zinc at different rates | (30) |
| Soil and foliar application of ZnSO₄.7H₂O and zinc-coated urea | Prasad and Shivay (31) | |
| Wheat | Soil and foliar sprays (two) at maximum tillering and booting stage with different sources of zinc at different rates | (32) |
| Soil and foliar application of zinc as ZnSO₄.H₂O | (33) | |
| Dextran sulfate (DEX (SO4))-coated ZnO Nanoparticles | Elhaj and Unrine (34) | |
| Different rates and source of Zinc at 1/3- sowing, 1/3–3 weeks after sowing (WAS) and 1/3–6 WAS | Prasad and Shivay (31) | |
| Bread wheat, durum wheat and triticale | Foliar application of 0.5% ZnSO₄.7H₂O at maximum tillering, flower initiation, milk and dough stages. The maximum percent increase was 145.9% in wheat, 178.1% in durum wheat and 157.4% in triticale |
(35) |
| Pulses | ||
| Chickpea | Soil application (5 kg/ha) through ZnSO4.7H2O Increase in concentration of zinc by 5.4 mg kg−1 |
(36) |
| Pigeon pea | Soil application (20 kg/ha) ZnSO4.7H2O Increase in concentration of zinc by 10.6 mg kg−1 |
Behera et al. (37) |
| Lentil | Foliar spray of 0.5% ZnSO4.7H2O at the pre-flowering stage. Increase in concentration by 10.5 mg kg−1 in grains. |
(19) |
| Oilseeds | ||
| Safflower | Soil application (5 kg/ha) through ZnSO4.7H2O | Roy and Ghosh (38) |
| Linseed | Foliar application of ZnSO4.7H2O and Zn-EDTA (0, 0.25, 0.50, and 0.75%) at flowering and capsule formation stages | (39) |
| Vegetables | ||
| Brassicaceae microgreens (Arugula, red cabbage, and red mustard) | Soilless media: ZnSO4 (5–10 mg/L) 75–281% increase in zinc content in crop |
(22) |
| Arugula (Broad leaf) | Foliar application (Zn @ 1.5 kg/ha at 25 DAE) 279% increase in Zn content |
(40) |
| Lettuce | Different Zn doses (0,5, 10, 20, 30 mg kg−1) | (41) |
| Broccoli | 0.25% ZnSO4. 7 H2O @ 15 mL per pot | (42) |
| Fruits | ||
| Pear | Foliar spray of 1.5% ZnEDTA | (43) |
| Banana | Injection of ZnSO4. 7 H2O in pseudostem @ 1, 2 and 4% Triple zinc content in fruit than control |
(44) |