Introduction. In order to meet the needs of a growing population in food products, the production of highquality and high-calorie food products is considered relevant in the countries of the world today. The walnut industry occupies a special place in this direction. 3.76 million tons of walnuts are produced annually in the world. China grows 1.79 million tons of walnuts per year and is the largest walnut producer in the world. The next place is the USA, the production volume of walnuts is 0.61 million per year on average. tons. China, the United States, Iran, Turkey and Mexico are the world's largest walnut-growing countries, accounting for 79 percent of the world's total walnut production.

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