The given statement is true.
A classic, predominantly silt-sized sediment, which is produced due to the gathering of wind-blown dust is known as loess. About 10 percent of the land region of the Earth is covered by loess or identical sediments. The loess seems to form into very rich soils. Under suitable climatic circumstances, it is one of the most agricultural productive terrains around the globe.
The soils formed by loess seems to be extremely drained. It is considered that the fertility of the loess soils is mainly because of porosity and cation exchange capacity.