1985 Volume 47 Issue 1 Pages 5-10
Based upon the experimental results obtained before, a pest control machine and a herbicide applicator were made as an prototype machine. The chassis used here was reported in the Ist report. This pest control machine has a mechanism whose swath width is changeable according to the spread of plant, from young tea field to matured tea fied. For operating accuracy, this machine excels in exterminating Kanzawa spider mite and Tea green leafhopper that are thought to be difficult to exterminate, and at plucking time a few leaf harmed by pest were found. The working area per hour of this pest control machine was 65a/h at the application rate of 2kl/ha and 33a/h at the application rate of 4kl/ha. A herbicide applicator spreads herbicide in the space between hedges, and has a mechanism of which applicator is automatically kept at the center of row spacing against the winding of the machine. The working area per hour of this herbicide applicator was 53a/h.
