Which one of the following is pest of tobacco
Which one of the following is pest of tobacco
- A
Tribolium sp.
- B
Spodoptera sp.
- C
Pectinophora sp.
- D
Calandra sp.
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Which of the following are natural insecticides?
$(a)$ Rotenone $(b)$ Pyrethrum
$(c)$ Nicotine $(d)$ Azadirachtin
Which of the following are natural insecticides?
$(a)$ Rotenone $(b)$ Pyrethrum
$(c)$ Nicotine $(d)$ Azadirachtin
Which of the following plants are used as green manure in crop fields and in sandy soils
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- [AIPMT 2003]
A natural insecticide obtained from plants is
A natural insecticide obtained from plants is
Fumigants are volatile toxicants
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