Amidst the rising international raw material prices and fertilizer supply instability caused by the war between the United States, Israel, and Iran, it has been found that reducing the use of fertilizer does not result in any difference in quantity or quality. According to the Jeju Agricultural Technology Institute, the results of field tests conducted in 30 cabbage, broccoli, and onion fields in the western part of Jeju since last year showed that while fertilizer use decreased by 35%, there was no difference in quantity and quality compared to conventional practices. Looking at the items, cabbage saw a 43% reduction in fertilizer use, with 19.5kg of fertilizer sprayed per 10a compared to the conventional 32.7kg. Broccoli saw a 36% reduction compared to conventional practices with 23.7kg, and onions saw a 26% reduction with 18.1kg. The quantity per 10a was 7693kg for cabbage, 1378kg for broccoli, and 5855kg for onions with standard fertilization, compared to 7654kg for cabbage, 1341kg for broccoli, and 5834kg for onions with conventional practices, showing no difference or a slight increase. The yield rate was 88.3% for cabbage, 91.3% for broccoli, and 84.5% for onions with standard fertilization, compared to 88.6% for cabbage, 89.5% for broccoli, and 83.4% for onions with conventional practices, showing no difference or a slight increase with standard fertilization. As it has been confirmed that reducing fertilizer use based on soil testing does not result in any problems with quantity or quality, 88% of the participating farms expressed satisfaction with the project and indicated their intention to continue participating. The Jeju Agricultural Technology Institute plans to promote a campaign to expand the practice of standard fertilization until the 29th of next month with the slogan "Turning crisis into opportunity, expanding the practice of standard fertilization." A representative from the Jeju Agricultural Technology Institute said, "In a situation where there is great concern among farms due to fertilizer supply instability, standard fertilization can be an alternative that simultaneously achieves cost savings and environmental conservation," and expressed hope that many farms will participate in the campaign to overcome the crisis together. Meanwhile, the Jeju Agricultural Technology Institute provides customized soil testing services free of charge throughout the year to expand the use of standard fertilization.