UNDERSTANDING THE RESPONSE OF WHEAT-CHICKPEA INTERCROPPING TO NITROGEN FERTILIZATION USING AGRO-ECOLOGICAL COMPETITIVE INDICES UNDER CONTRASTING PEDOCLIMATIC CONDITIONS Article Kherif O., Seghouani M., Zemmouri B., Bouhenache A., Keskes M.I., Yacer-Nazih R., Ouaret W., Latati M. AGRONOMY-BASEL. MDPI. Vol. 11. 2021.