The International Institute of Tropical Agriculture (IITA) campus in Ibadan, Nigeria, is located in a tropical climate zone. Here are some key environmental conditions: The area experiences a tropical savanna climate, with distinct wet and dry seasons. The rainy season typically runs from March to October, while the dry season is from November to February. Average temperatures range from about 20°C (68°F) at night to around 30°C (86°F) during the day. Humidity levels can be high, especially during the rainy season, often exceeding 80%.The campus is home to diverse flora and fauna, including various tree species, shrubs, and wildlife, contributing to its rich ecological environment. The soil in the region is primarily lateritic, which can vary in fertility depending on the specific area and land management practices. The campus has access to several water channels and rainwater harvesting is promoted to support sustainable agriculture and research. The maize morphological characterization of 612 accessions was carried out from 2024/11/21 to 2025/03/17 in IITA campus Ibadan with latitude of 7.37756 Longitude of 3.90591.This period is characterized by less rainfall and is influenced by the dry, dusty Harmattan wind blowing from the Sahara Desert.