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Agronomic Bio-fortification of Zinc Improves the Yield and Quality of Fodder Oat

Asif Muhammad, Asad Muhammad Sohaib, Safdar Muhammad Ehsan, Khan Imran, Akhtar Naeem, Hassan Muhammad Arish, Moosa Muhammad, Baoyi Zhao, Almoallim Hesham S., Ansari Mohammad Javed

Journal of Ecological Engineering

2024

Vol. 25, nr 6

153--163

Oat is an important winter fodder crop grown in large areas all over the world. Oat is a good source of nutrition and energy, but it is poor in zinc. Presently, livestock is suffering from malnutrition due to a deficiency of zinc, which has a greater impact on livestock and ultimately on human health. An easy and cost-effective approach to adding nutrients to plants without altering their genetic makeup is agronomic biofortification. Application of nutrients to oat via bio-fortification may enhance the overall biomass production and quality of fodder. Hence, a field study was performed to understand the impact of bio-fortification with zinc on quality along with biomass production of oats. Treatment comprised of control (No Zn), Zn at 4 kg soil application, Zn at 6 kg soil application, Zn at 8 kg soil application, Zn at 4 kg soil application+0.5% zinc sulfate as foliar application, Zn at 6 kg soil application+0.5% zinc sulfate as foliar application and Zn at 8 kg soil application+0.5% zinc sulfate as foliar application. The study revealed that Zn at 6 kg soil application+0.5% zinc sulfate foliar application produced maximum plant height (207.7 cm), leaf area index (15.78), crop growth rate (9.1 gm-2day-1), stem diameter (0.073 cm), number of tillers (204), fresh fodder yield (76.6 t·ha-1), dry matter yield (32.27 t·ha-1), ash contents (10.3%) and plant zinc contents (70.0 ppm). Control treatment produced maximum crude fiber contents (40.70%), acid detergent fiber contents (35.77%), and neutral detergent fiber contents (72.71%). In conclusion, the bio-fortification of zinc not only enhanced the biomass and yield of oat but also increased the availability of zinc in plants.