Irrigation Period and some Corn (Zea mays L.) Varieties and their Effect on Productivity Under the Center Pivot Sprinkler Irrigation System

To decrease the amount of water consumed for irrigation in a way that keep an acceptable amount of corn crop yield; a field experiment was conducted in a sandy loam soil at AL-Hamidhiah research station, One of the research stations affiliated with the College of Agriculture - University of Anbar - Ramadi in the fall of 2023, to study the effect of irrigation scheduling (3, 5, 7) days on five local varieties of yellow corn, namely Al-Fajr, Al-Maha, Al-Safa, Buhooth 106, and Sara. Buhooth 106 variety was more efficient in giving the highest grain yield per corn cob, 137.20 g. Likewise, AlFajer and Sara varieties gave a grain yield of 124.80 and 117.47 g, respectively. The 3-day irrigation period resulted in the highest grain yield of 140.20 grams, compared to the 5- and 7-day irrigation treatments, which increased by 17.05% and 66%, respectively. Compared to the actual water requirement of corn in central Iraq, the result of the 5- and 7-day irrigation treatment was an acceptable and reliable amount in times of water scarcity.