A master's thesis at the College of Agriculture at the University of Basrah discussed the effect of nitrogen fertilization levels and cutting height on the growth and forage yield of white corn crop and the evaluation of its fodder value.
Researcher Hadi Saadoun Kazem's thesis included a study of five levels of nitrogen fertilizer (0, 150, 200,250, 300) kg N ha-1 and three levels of cutting height (10, 20, 30) cm.
The results of the experiment showed that the levels of nitrogen fertilizer had a significant effect on all traits, as the fertilizer level exceeded 250 kg N ha-1, as it recorded the highest average for some traits and yield. As for the effect of the cutting height, it had a significant effect, as the 10 cm level recorded the highest average for most growth traits.
The aim of the thesis was to determine the best level of nitrogen fertilizer, cutting height, and estimate the forage value of the plant.
The thesis recommended that fertilizing sorghum with 250 kg N ha-1 with mowing the plants at a height of 10 cm, and conducting studies in the autumn season with the use of other fertilizer levels that do not exceed 250 kg N ha-1 with the use of another type of fertilizer such as phosphate and potassium fertilizers, and conducting joint studies with specialists in livestock because the quality of fodder produced from white corn is of particular importance in feeding animals, especially ruminants.
