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Dust storm and scenes of abandoned ranch structures in the western United States, 1951
Taken from the introduction of "Your Enemy the Grasshopper," a Bureau of Entomology and Plant Quarantine short film on grasshopper plagues, made in 1951. Intro sequence with close up of grasshopper. Dust storms during the Dust Bowl period in America, and views of dry, arid ground in the western United States. Cattle being herded by men on horses. Close up of a train passing by. Scenes of damaged or destroyed structures including a gate, ranch houses and sheds, and a windmill. Open shot of cloudy sky and blowing trees. Scenes of derelict, abandoned structures. Narrator and music.
Grasshopper plague devastates the Great Plains of the United States, 1951
Scenes from a U.S. Bureau of Entomology and Plant Quarantine film. View of green plains with grasshoppers flying about. Various shots of dead corn, alfalfa, small grains, and other trees and shrubs, all ravaged by grasshoppers in the Great Plains of the United States. Two men walk along a fence line in the midst of a dust storm. Shot of ruined fence. Illustrated graphic map of the United States outlines regions which were previously affected by grasshopper plagues. Illustration of a grasshopper placed over top of the graphic, entire western United States highlighted. Narrator notes that plagues have caused millions of dollars in agricultural damages. Zooming shot on record book containing figures representing agricultural economic loss for individual states. Scene changes to swarms of grasshoppers crawling and flying in mass, followed by shots of destroyed farm crop land, trees, and eroded river bank.
Major crop-damaging grasshopper species and their effects, 1951
From a United States Bureau of Entomology and Plant Quarantine film on grasshopper plagues. Close up of brown grasshopper, mandibles moving. Side view shows developed hind legs, allowing strong leaping abilities. Grasshopper ravaging farm crops and shrubs. Swarm of grasshoppers. Narrator notes that just five species of grasshoppers are responsible for at least ninety percent of all damage done to cultivated crops. Overview and close ups of each of the five species: Migratory grasshopper, Differential grasshopper, Two-striped grasshopper, Red-legged grasshopper, and Clear-winged grasshopper. View of dry, dead crop field. Cattle are herded into a pen, narrator notes that grasshoppers also cause millions of dollars in damages to range and pasture. Graphic map of the United States, Gulf states highlighted. Man speaks about the grasshoppers. Grasshoppers eat farm crops in the fields of the Gulf states. Graphic map of U.S. shows northeast states highlighted. Grasshopper insects eat and destroy crops.
Grasshoppers eating a variety of crops across the United States, 1951
From a U.S. Bureau of Entomology and Plant Quarantine film. Farmer picks crops in a farm field, speaks about grasshopper damages which is expected each year and written off before harvest. Illustrated graphic map of the United States shows crops of different regions and highlights that grasshoppers affect all areas. Close up of grasshoppers feeding on many types of staple crops. Scenes of feeding and destroyed plants. Scenes of grasshoppers eating more unconventional foods such as wood and tree bark, in hot and dry climates. Green and brown grasshopper insects pictured.
Grasshopper life cycle and reproduction, including details on favorable and unfavorable conditions, 1951
Bureau of Entomology and Plant Quarantine film on grasshopper plagues in the United States. Farmer walking in golden farm field, picks up heads of grain on the ground which has been clipped off by grasshoppers. Young, newly hatched grasshopper feeding. Large group of grasshoppers feeding on a shrub. Close up of female grasshopper. Grasshopper eggs laid in the ground. Narrator describes life cycle of the insect. Group of newly hatched generation of grasshoppers. Scenes of various types of crops and locations preferred for laying eggs. Illustration details the egg laying process and number of eggs, as well as favorable and unfavorable weather conditions and their effect on grasshopper survival. Scenes of dead grasshoppers due to poor hatching conditions. Some of the dead hoppers are consumed by bacterial or fungal growth. cattle in a dry field. Closeup of dry, shriveled grasshopper egg due to drought conditions. Calendar animation shows optimal months for grasshopper survival.
Grasshopper predators and explanation of conditions leading to a grasshopper outbreak, 1951
Bureau of Entomology and Plant Quarantine film on grasshopper plagues in the United States. Hatching of infant grasshoppers, white translucent appearance. Young grasshoppers feeding, narrator details the maturity process of grasshopper insects. Scenes of larger, more mature grasshoppers. Close up of adult female grasshopper laying its eggs in the earth. Illustration shows the average number of eggs expected from a single female grasshopper. Close ups of various grasshopper predators including a spider and maggots of some insects, which eat the eggs of unborn grasshoppers. Brief scenes of birds which eat grasshoppers or their eggs. Scene changes to swarms of grasshoppers in the sky. Illustration details the conditions and "pyramiding" effect which can lead to a grasshopper outbreak that threatens farming and agriculture, as well as number of grasshoppers that may be expected in the years leading up to the outbreak.
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