RESPONSE OF MAIZE (ZEA MAYS L.) TO TIME OF SPRINKLER IRRIGATION AND PLANTING DENSITY

The relation between the time of sprinkler irrigation and planting density with the response of maize has been studied by many research due to its important. In the current study an experiment was conducted in the spring season (2022) to compare the Buhooth106 variety with four plant densities. Planting took place on 7/20/2022, using a Randomized Complete Block Design with a split plank arrangement (RCBD). The stress coefficients were placed in the main panels (2, 4 and 6 days) and four plant densities in the secondary panels are (53333, 66666, 88888 and 133333) (plant H-1, where the plant density was superior to 53333 and 66666 plants H-1 by leaf area, number of grains per ear, weight of 300 grains, and yield per plant) 4801.67 and 4361.33 (cm2), (450.3 and 433.0) grains, (134.20 and 113.30) grams, respectively. The two plant densities of 133333 and 88888 plants H-1 excelled in plant height and plant yield per unit area and reached (186.64 and 181.09) cm, (9.29 and 8.19) mega gm. h-1, respectively. The pivot irrigation interval of 2 days gave the highest leaf area, the highest weight of 300 grains, and the highest yield per unit area of 437 grains, 79.48 gm, and 9.21 mega gm. h-1, respectively. For the 6-day irrigation treatment gave a yield of 6.64 mega gm. h-1 and this amount is considered acceptable compared to the lack of irrigation. The irrigation interval exceeded 2 days with the plant density of 133333 h-1 plant had the highest yield per unit area, and reached 10.61 mega gm. h-1. While the irrigation interval of 6 days gave a plant density of 88888 h-1 plants with a yield of 6.84 mega gm. h-1. It was characterized by the homogeneity of its seeds on the ear and the large size of the grain, so it is possible to use little irrigation with the appropriate plant density to give an acceptable yield from an economic point of view.