Cotton crop is sprayed by a crop plane.
United States of America.
The cotton crop is subject to insect pests. Camera pans across a field of cotton plants. C/U of buds of cotton plant with a bug eating a hole in one of the plants. "The newest protection is to spray deadly calcium arsenate gas over the crops by means of 'planes..."
Air to air shot of a biplane spraying crops. Camera follows crop sprayer as it flies low to the ground. Various shot as the plane travels across the countryside. Last shot is of the plane flying towards the camera and releasing large cloud of crop spray which engulfs the screen.
Was probably originally an item in Pathe Pictorial issue number 276.