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Distribution of Blank Hexazinone Granules from Aerial and Ground Applicators

Published online by Cambridge University Press:  12 June 2017

Joseph C. Feng  and
Surindar S. Sidhu
Joseph C. Feng
Affiliation:
For. Can., North. For. Cent., 5320-122 St., Edmonton, Alberta, Canada T6H 3S5
Surindar S. Sidhu
Affiliation:
For. Can., North. For. Cent., 5320-122 St., Edmonton, Alberta, Canada T6H 3S5
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Abstract

Variation in size and distribution patterns of granules of a blank hexazinone formulation were studied in both ground and aerial applications. Granule size ranged from 2.5 to 93 mg with 90% of the granules between 5 and 35 mg. The granule size frequency among weight classes did not change within a 5-m wide test swath from a truck-mounted applicator, indicating no impact on the distribution of active ingredient. The ground applicator did not produce a uniform deposition of granules. Average granule depositions were 11 ± 5 kg/ha and 16 ± 8 kg/ha for the target rates of 20 and 40 kg/ha, respectively. Aerial application with a helicopter-mounted bucket spreader produced a 27-m wide effective swath. Average deposition rates were 19 ± 5 kg/ha and 39 ± 9 kg/ha for the target rates 20 and 40 kg/ha, respectively. The optimal sample sizes for aerial application were estimated to be 27 and 50 samples for 40 (±10%) and 20 (±10%) kg/ha rates, respectively, with 90% certainty.

Keywords

Hexazinone3-cyclohexyl-6-(dimethylamino)-1-methyl-1,3,5-triazine-2,4 (1H,3H)-dioneForestrybrush controlgranular applicatorbucket spreader
Type
Research
Information
Weed Technology , Volume 3 , Issue 2 , June 1989 , pp. 275 - 281
Copyright
Copyright © 1989 by the Weed Science Society of America 

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References

Literature Cited

1. Dimock, E. J. II, Beebe, T. F., and Collard, E. B. 1983. Planting-site preparation with herbicides to aid conifer reforestation. Weed Sci. 31:215–221.CrossRefGoogle Scholar
2. Feng, J. C. 1987. Persistence, mobility and degradation of hexazinone in forest silt loam soils. J. Environ. Sci. Health B22:221–233.CrossRefGoogle Scholar
3. Feng, J. C. 1988. Cross-wind effect on aerial application of granular hexazinone. Res. Rep. Expert Comm. Weeds, West. Can. Sect., 3:203.Google Scholar
4. Feng, J. C., and Feng, C. C. 1988. Determination of hexazinone residues and their fate in a New Brunswick forest. Can. For. Serv., For. Pest Manage. Inst., Sault Ste. Marie, Ontario, Inf. Rep. FPM-X-81.Google Scholar
5. Feng, J. C., Feng, C. C., and Sidhu, S. S. 1989. Determination of hexazinone residues and its release from a granular formulation under forest conditions. Can. J. For. Res. 19:378–381.CrossRefGoogle Scholar
6. Feng, J. C., Stornes, V., and Rogers, R. 1988. Release of hexazinone from Pronone 10G granules exposed to simulated rainfall under laboratory conditions. J. Environ. Sci. Health B23:267–278.CrossRefGoogle Scholar
7. Freese, F. 1962. Elementary forsest sampling. U.S. Dep. Agric., For. Serv., Agric. Handb. No. 232, p. 24–28.Google Scholar
8. Lowery, R. F. 1984. Hexazinone-sintered clay for hardwood control. Proc. South. Weed Sci. Soc. 37:237–241.Google Scholar
9. Malik, N., and Vanden Born, W. H. 1986. Use of herbicides in forest management. Can. For. Serv., North. For. Cent., Edmonton, Alberta, Inf. Rep. NOR-X-282.Google Scholar
10. Payne, N., Feng, J., and Reynolds, P. 1987. Off-target deposit measurements and buffers required around water for aerial glyphosate application. Can. For. Serv., For. Pest Manage. Inst., Sault Ste. Marie, Ontario, Inf. Rep. FPM-X-80.Google Scholar
11. Weidenfeller, T. A. 1985. Granular herbicides in lake states forestry. Proc. North Cent. Weed Control Conf. 40:31–32.Google Scholar
12. Yates, W. E., Cowden, R. E., and Akesson, N. B. 1985. Atomization of herbicide simulants with hollow cone and raindrop nozzles. U.S. Dep. Agric., For. Serv., For. Pest Manage., Davis, CA FPM 85-1.Google Scholar