Field experiments were conducted over 3 years with the following four Zn treatments: nil Zn, soil Zn application, foliar Zn application and soil + foliar Zn application to explore the impact of Zn fertilization in Zn biofortification of wheat. The experiments were conducted at a total of 23 experimental site-years in China, India, Kazakhstan, Mexico, Pakistan, Turkey and Zambia. Foliar Zn application resulted in successful biofortification of wheat grain with Zn without causing yield loss. This effect of Zn fertilization occurred irrespective of the soil and environmental conditions, management practices applied and cultivars used in 23 site-years. Foliar Zn fertilizer approach can be locally adopted for increasing dietary Zn intake and fighting human Zn deficiency in rural areas.
Zou, C.Q.; Zhang, Y.Q.; Rashid, A.; Ram, H.; Savasli, E.; Arisoy, R.Z.; Ortiz-Monasterio, I.; Simunji, S.; Wang, Z.H.; Sohu, V.; Hassan, M.; Kaya, Y.; Onder, O.; Lungu, O.; Mujahid, M.Y.; Joshi, A.K.; Zelenskiy, Y.; Zhang, F.S.; Cakmak, I. Biofortification of wheat with zinc through zinc fertilization in seven countries. Plant and Soil (2012) 361 (1-2) 119-130. [DOI: 10.1007/s11104-012-1369-2]