Nitrogen cycle

Series: Botany Series

Duration: 0:13:50

Genre: Educational

Year Published: 1953

Creator: Inc.: Distributor

Format: 16mm

Color: B&W

Sound: sound

Description: Illustrates the cycle through which nitrogen passes in changing from free nitrogen in air, to compounds in the soil, to plant and animal protein, and to free nitrogen in air again. Uses animated drawings to describe this cycle. Explains the reasons for the use of forage crops as animal food and fertilizer, and points out the similarity between making fertilizer in the factory and the natural process of creating nitrogen compounds.

Complete Record: , Illustrates the cycle through which nitrogen passes in changing from free nitrogen in air, to compounds in the soil, to plant and animal protein, and to free nitrogen in air again. Uses animated drawings to describe this cycle. Explains the reasons for the use of forage crops as animal food and fertilizer, and points out the similarity between making fertilizer in the factory and the natural process of creating nitrogen compounds.NOTE: Two (or more) records have been merged together to create this data.