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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

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