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Abstract An experiment was conducted with plastic pots in Al-Husseiniya area in order to study the effect of potassium fertilization and foliar. spraying with ascorbic acid and their interactions on some yield characteristics of wheat (Abu Ghraib) grown in mixed sandy soil during the agricultural season 2023-2024. The experiment factors were represented by three levels of the add potassium (B), which in (0, 100, 200 kg K.h -1 ) Fertilization was carried out in three batches: after emergence, three leaf stage and at flowering. The second factor was represented by three concentrations of ascorbic acid (A), which are (0, 0.3, 0.6 gm) was sprayed in two - stages, the first the thinning stage (four-leaf stage) and the second at elongation (8-leaf stage). The experiment included 27 experimental units according to a completely randomized design (C.R.D) with three replications as described below: 1-Potassium fertilization had a significant effect on yield characteristics, as these traits increased with increasing potassium levels at the level of 200 kg K. h -1 , represented by the number of spikes, the length of the spike, amounted to 3.32 spikes. Plant -1 , 9.52 cm in order. 2-Foliar spraying with ascorbic acid showed a significant effect on some yield characteristics at a concentration of 0.6 gm represented by the number of spikes, the weight of the spike, and the number of grains per spike amounted to 3.54 spikes. Plant -1 , 2.44 gm, 41.1 pcs. 1 spike in succession. 3-Show the bilateral interaction of foliar spraying with ascorbic acid at a concentration of 0.6gm and nitrogen fertilization at the level of 200 kg K.h -1 showed significant differences and gave the highest value for all yield characteristics represented by the number of spikes, the length of the spike, the weight of the spike, and the number of grains per spike, which amounted to 3.90 spikes. Plant -1 , 10.58 cm, 2.68 g, 46.7 pcs. Sunbulah -1 in order and it is considered the best treatment.
Al-Masoudi et al. (Mon,) studied this question.