Iron chelates in fertilizer will correct iron deficiency when added to soil. One pound of iron per acre is the recommended rate. An application of iron will only work if the soil is acidic in nature, so a pH test is required.
On Location. Big was filmed on location in New Jersey and New York City. The Baskin House was filmed at, 437 Greenmount Road, Cliffside Park, NJ, USA [Thanks to Dee83] Locations used include Cliffside Park, NJ for young Josh's home and Cliffside Park Elementary School #6 as the school Tom Hanks attended.
East of the town, the nightmare baptism flashback seen later in the movie was filmed at Moss Creek Lake. A few miles to the west of Big Spring, the old house, where Joe Buck makes out with Crazy Annie, is the historic Millhollon House, on I-20 Frontage Road, just northeast of Stanton.