SUSTAINABILITY OF AGRICULTURAL PRODUCTIVITY OF PEANUT CROP AND EVALUATION OF WATER PRODUCTIVITY UNDER DIFFERENT IRRIGATION SYSTEMS AND INTERVALS AND USING ORGANIC FERTILIZERS

Three separate field experiments were conducted within Al-Rashidiya region, Istiklal district, north of Baghdad province, to study the difference of irrigation interval under subsurface drip irrigation, sprinkler, and furrow systems in the water requirement of Peanut during the summer season 2021 as a factorial experiment within the design of Nested-Factorial Experiments Design. The first factor has three irrigation systems, which are drip irrigation, sprinkler irrigation, and furrow irrigation, where the second factor is distributed three irrigation Interval on the main plots. Then, the third factor was three levels of organic fertilization, the orgevit fertilizer. The results were as follows: The mean of vegetative growth traits increased from plant length, number of branches.plant(-1), root length, dry weight, and total yield of peanuts increased by adding organic fertilization.The subsurface and drip irrigation systems were excelled as compared to the sprinkler irrigation system in the averages of vegetative growth and yield, as well as the irrigation interval, which had a significant effect, but it did not take one context within the same irrigation system. The water productivity at the bi-interaction between the irrigation interval and the organic fertilization under the subsurface drip irrigation system and the sprinkler irrigation system and the irrigation intervals of 4 and 6 days. The highest water productivity was 3.20 and 2.68 kg m(-3) and 1.74 and 1.72 kg m(-3), respectively, at the level of 1000 kg dunums (-1) of orgevit fertilizer with significant differences with the rest of the treatments at the furrow irrigation system, irrigation intervals of 2, 4, and 6 days + 1000 kg dunum-1 of Orgevit fertilizer significantly excelled in water productivity, reaching 1.75, 2.07, and 1.77 kg m(-3), respectively.