After controlling root-knot nematode and plant extracts for 1 month showed that treatment 5 control nematode M. incognita with marigold extract is effective in reducing the incidence of the best clues. Compared with the control treatment 2 to nematode M. incognita alone. The percentage reduction in nodulation at 41.66%, followed by treatment 3 control nematode M. incognita with neem extracts. The percentage reduction in nodulation at 33.33% by the treatments of 4 control nematode M. incognita with garlic extract. Effective in reducing the incidence of clues least when compared with treatment 3 and 5, which processes the percentage of reduction of 29.16%, the crux of the creators of the first unit does not enter the nematode M. incognita and. extracts and treatment 2 to control nematode M. incognita alone. The percentage of reduction of the knot is at 100% and 0%, respectively.
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