A: Probably not, though itâs hard to know for sure. Hexane is a volatile solvent thatâs used, with Food and Drug Administration (FDA) approval, to extract oil from soybeans (as well as from nuts and olives).
Agriculture uses about 80 percent of Californiaâs. developed water supply. As such a large. user, it is heavily impacted by the availability. and reliability of Californiaâs water resources. Agriculture can also play an important role in. helping the state achieve a more sustainable. water future.
7.1 Salinization. A soil may be rich in salts because the parent rock from which it was formed contains salts. Sea water is another source of salts in low-lying areas along the coast. A very common source of salts in irrigated soils is the irrigation water itself. Most irrigation waters contain some salts.After irrigation, the water added to the soil is used by the crop or evaporates directly from the moist soil. The salt, however, is left behind in the soil. If not removed, it accumulates in the soil; this process is called salinization (see Fig.ost irrigation waters contain some salts. After irrigation, the water added to the soil is used by the crop or evaporates directly from the moist soil. The salt, however, is left behind in the soil. If not removed, it accumulates in the soil; this process is called salinization (see Fig.