The study of soil groups, soil types, and soil characteristics is very important for the cultivation of crops in Cambodia. Selecting soil types that are not suitable for the type of crop will result in poor crop growth, slowness, and low yields. In the same way that the cultivation of crops in the production of vegetable crops is the same, that is, choosing the type of soil that is suitable for the crop is a point to consider and pay attention to. Due to some geographical areas in some communes, the topography is sandy or rocky, and the soil is hard, making it difficult for farmers to prepare parallel cultivable land where some people have less land and try to cultivate it using plastic buckets. Cement or bags to grow as a vegetable or grow to get some yield just to meet daily food needs; avoid spending money to buy vegetables from the market. Bak Choy is a crop that can grow on almost any type of soil, especially alluvial soils. It also has many benefits for the body, such as strengthening bones, the immune system, cancer cells, and so on. However, the cultivation of kale also encounters a number of problems, such as poor growth, low yields, pests, and diseases, especially the technique of choosing the wrong soil mixture, which affects the growth and yield. Not so good. A comparative study of different levels of soil and manure mixes on the growth and yield of Bak Choy in AmpilTapok commune, Orang Ov district, ThbongKhmum province. On the growth and yield of the first treatment (T1), the use of soil mix with cow dung, the second treatment (T2), the use of soil mix with chicken manure, and the third treatment (T3), the use of soil mix with pig manure is grown using a mixture of soil mixed with chicken manure (T2), which grows well and gives high yields in other ways
