Peanut (Arachis hypogaea), is an important food legume capable of symbiotic N2 fixation. Peanut seeds contain a rich source of edible protein and represent the major oilseed crop in China, accounting for 30%of the total production.However, iron (Fe) deficiency frequently limits both crop yields and the quality of monocropped peanuts grown in the calcareous soils of Northern China. Peanut/maize intercropping is a successfulcrop management strategy that results in more effective and sustainable practice for farmers due to improvement in the Fe content of the peanut plants. Peanut/maize intercropping is known to improve Fe nutrition in all peanut tissues [5,6]