. Current topics in forest entomology : selected papers from the XVth International Congress of Entomology, Washington, , 1976. Forest insects Congresses. > o 5 1300 â¢find N â M,y,_road crosses same position twice Block. ELEVATION PROFILE ACROSS BLOCK; 1975 ; MANIWAKI. Figure 4.âTransect of experimental night spray block showing the profile of road elevation, day and night land profile and spray emission altitude. mental block is shown in figure 4 in terms of the road profile, the day land profile (based on the highest point of land 2 miles on either side of the road), and the night la
. Current topics in forest entomology : selected papers from the XVth International Congress of Entomology, Washington, , 1976. Forest insects Congresses. > o 5 1300 â¢find N â M,y,_road crosses same position twice Block. ELEVATION PROFILE ACROSS BLOCK; 1975 ; MANIWAKI. Figure 4.âTransect of experimental night spray block showing the profile of road elevation, day and night land profile and spray emission altitude. mental block is shown in figure 4 in terms of the road profile, the day land profile (based on the highest point of land 2 miles on either side of the road), and the night land profile (based on the highest point of land on the swath lanes within the block). Spray emission altitude was set at 700 feet above the highest point of forest terrain bounding a 5-mile zone surrounding the spray block. All profiles are shown with reference to elevation above sea level. The first attempt to spray the experi- mental block on June 4 under ideal weather conditons was aborted due to improper program- ming of the LTN-51 and a malfunction of the spray system on the Constellation 749 spray aircraft. Meteorological conditions during the next 4 days were extreme, with a low centered over the experimental site. Ground winds were 3 to 5 kilometers/hr. Since the spray aircraft was scheduled to depart on the morning of June 10, it was decided to spray the experimental site on June 9 taking into consideration the high altitude winds. Pibal readings were taken before, during, and after spraying to provide a profile of wind speed and direction across the experimental block (fig. 5). Because of the high winds at emission altitude, the aircraft swath lanes were offset 6000 feet upwind of the block. An oil/fenitrothion formulation containing percent active ingredient, percent arotex cosolvent, percent #2 fuel oil and percent # 4 fuel oil was applied at a dosage rate of oz. ()/acre under starlight conditions using a Constellation 749 spray a
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