Leaching is a process due to which the soil loses its water-soluble nutrients and colloids from the top layer. This might happen due to rain or irrigation. Due to this process, these nutrients are carried downward (eluviated) and are generally redeposited (illuviated) in a lower layer of the soil resulting in an open top layer and a dense, compact lower layer.One of the elements that are a vital nutrient for plant growth is boron. Leaching can affect water soluble boron and cause deficiencies in the crops. A deficiency of boron from the crops can result in diseases with visual symptoms of misshapen, thick, brittle, small leaves.