Of contact pesticides, dust and wettable powder pesticides tend to be more hazardous to bees than solutions or emulsifiable concentrates.
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In years when locust control is needed, the hoppers are targeted in spring by applying water-based, contact pesticides using tractor-based sprayers.
3.
The use of ultra-low volume spraying of contact pesticides from aircraft in overlapping swathes is effective against nomadic bands and can be used to treat large areas of land swiftly.
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