contact pesticide वाक्य

Of contact pesticides, dust and wettable powder pesticides tend to be more hazardous to bees than solutions or emulsifiable concentrates.
In years when locust control is needed, the hoppers are targeted in spring by applying water-based, contact pesticides using tractor-based sprayers.
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.