JFarm

Potassium nitrate is virtually free of chloride. When the chloride concentration in the soil solution increases, plants take up chloride on the account of essential anionic nutrients, especially nitrate. This, of course, hinders plant growth. When chloride quantities go higher, toxic effects are caused, that may lead to loss of yields and may even cause plant death. Potassium nitrate is virtually free of detrimental chloride, and the nitrate in potassium nitrate counteracts the chloride's harmful effect. Potassium nitrate is non-toxic to roots. Unlike ammonium, the nitrate-nitrogen in potassium nitrate does not destroy plant roots at elevated soil

Lawson died at his San Luis Obispo, Calif., home on Jan. 10 from respiratory failure caused by chronic obstructive pulmonary disease, his wife, Susan Lawson, told the Associated Press on Sunday. He is at least the third former Marlboro Man actor to die of a smoking-related illness, according to the AP. David Millar died of emphysema in 1987, and David McLean died of lung cancer in 1995. Lawson also played small roles in a host of TV shows including Charlie's Angels, The A-Team and Baywatch for more than three decades, according to the Internet Movie Database.