Reseach and Implementation Program for the 3rd Phase of the HarvestZinc Project

Zinc deficiency is a global nutritional problem in crops and humans in many countries. Application of Zn-containing fertilizers offers a rapid solution to the problem complementing genetic solutions via plant breeding. This project was initiated in 2008 to evaluate the potential of various Zn-containing fertilizers to increase Zn concentration in cereal grains and improve crop production in various countries. In addition to IPNI, the project is supported by the HarvestPlus Biofortification Challenge Program, The Mosaic Company, K+S KALI, Omex Agrifluids, the International Fertilizer Industry Association, and the International Zinc Association.

Results to date have shown large variations among countries and within countries in response to Zn fertilization. Grain Zn concentrations have been significantly increased by foliar application of Zn, often doubling levels, while soil Zn applications have been less effective. The project, now in its second phase, will focus on experiments investigating changes in grain Zn concentration based on timing and rate of a single spray of foliar Zn fertilizer. IPNI-10