Wasaya, A. et al. 2019. Tillage systems and nitrogen timings effect on growth, stay green and grain quality in maize (Zea mays L.). Semina: Ciências Agrárias. 40, 6Supl2 (Sep. 2019), 3007–3020. DOI:https://doi.org/10.5433/1679-0359.2019v40n6Supl2p3007.