Effect of adding organic matter and spraying with nano-iron and on soil content of nutrient during flowering and harvesting stages of yellow corn plants under salt stress conditions

Abstract

A field experiment was conducted during the summer season for the year 2020-2021 in one of the private farmers' farms belonging to Babylon province-Al-Kifl district in the Abu Simij region. The experiment included three factors, the first factor, spraying the nano iron fertilizer with three levels (Fe2, Fe1, Fe0), the second factor, and three levels of organic fertilizer (O2, O1, O0).The third factor and two levels of salinity of irrigation water (W2, W1). The experiment was conducted according to Randomize Complete Block Design and with three replications. The results were summarized as follows: There were no significant differences when adding nano iron by spraying on leaves to increase the availability of nutrients in the soil. The addition of organic fertilizer led to a significant increase in the availability of the nutrients in the soil, including nitrogen, phosphorus, and potassium, at an average of (34.85, 16.17, 186.28) mg / kg soil -1 Respectively in the flowering stage of the plant.As for the post-harvest stage, the highest average for the studied traits was (27.41, 11.84 and 158.37) mg / kg soil -1 respectively. As for the salinity of irrigation water, the first level exceeded the second level significantly in all the studied traits and reached (33.68, 14.12 and 186.94) for the flowering stage and reached (26.40, 10.87 and 158.21) mg kg soil -1 post-harvest stage. the bi-interaction between organic matter and irrigation water was excelled and it gave the highest average of nutrient concentration in the soil, and it reached the flowering stage (35.98, 16.55 and 189.13), and the highest rate for the post-harvest stage (29.84, 12.85 and 160.80) mg / kg soil -1 post-harvest stage.