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devine ang collego are two agricultural substances that are used as biofertilizers natural insectides insect harmones bioherbicides

devine ang collego are two agricultural substances that are used as
  1. biofertilizers
  2. natural insectides
  3. insect harmones
  4. bioherbicides

Grade:12th pass

1 Answers

Apoorva Arora IIT Roorkee
askIITians Faculty 181 Points
9 years ago
The correct option is 4.
A bioherbicide is a biologically based control agent for weeds. Among the three major types of pesticides (agricultural pest-control agents) herbicides are used to control weeds, or undesirable plants. (The other major classes of pesticides are insecticides, which control insects; and fungicides, which control fungi. Normally, any pesticide can only be expected to control, but not eradicate, agricultural pests.)

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