Evaluating the Impact of Commonly Used Pesticides on Honeybees (Apis mellifera) in North Gonder of Amhara Region, Ethiopia

Table 6

LD₅₀ of pesticides tested in the laboratory and their categories.

Pesticides	LD50	Toxicity classification	Dose tested	^#StandardLD50
Diazinon 60% EC	<0.1 μl/bee	Highly toxic	0.3 μl, 0.2 μl, 0.1 μl	Acute LD50 < 2 μg/bee
Endosulfan 35% EC	<0.1 μl/bee	Highly toxic	0.3 μl, 0.2 μl, 0.1 μl	Acute LD50 < 2 μg/bee
Malathion 50% EC	<0.1 μl/bee	Highly toxic	0.3 μl, 0.2 μl, 0.1 μl	Acute LD50 < 2 μg/bee
Chlorsulfuron 75% WG	<0.1 μl/bee	Highly toxic	0.3 μl, 0.2 μl, 0.1 μl	Acute LD50 < 2 μg/bee
2,4-D	6–8 μl/bee	Moderately toxic	8 μl, 6 μl, 4 μl	Acute LD50 2–10.99 μg/bee
Glycel 41% EC	44 μl/bee	Slightly toxic	44 μl, 33 μl, 22 μl	Acute LD50 11–100 μg/bee
Mancozeb 80% WP	33–44 μl/bee	Slightly toxic	44 μl, 33 μl, 22 μl	Acute LD50 11–100 μg/bee
Glycel 41% EC + 2,4-D	5–7 μl/bee	Moderately toxic	9 μl, 7 μl, 5 μl	Acute LD50 2–10.99 μg/bee
Dimethoate 40% EC	<0.1 μl/bee	Highly toxic	0.3 μl, 0.2 μl, 0.1 μl	Acute LD50 < 2 μg/bee