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Pest bird damage in agriculture is a significant and long-standing problem globally especially for high value field crops such as wheat, rice and corn. The present study aims to control the pest birds in the field crops by using sonic waves. The study treatments were sonic waves frequency under four levels of 1, 3, 5, and 7 kHz; exposure time inter...
Contexts in source publication
Context 1
... measuring readings of device sound were located at 3 points. Firstly at the center of the field, (0 m), then by increased the distance up to 30 m and at the field head ( 50 m distance) as shown in Table (1). ...Context 2
... the study treatments were arranged from the study variable combinations of the device sonic waves frequency levels, the exposure time interval and the distance from the center of the field up to the field head, by using four blocks (replicates) for sunshine and sunset two blocks for each (measuring periods) as shown in Table (1). During applying sonic wave using bird control in this experiment we used the data of sound limits for different pest birds which might be expected, species differ in their sensitivities and range of sensitivities to frequencies of sound as shown in Table (2). ...