Nematicidal Effects of Various Fractions of Curcuma longa against Meloidogyne incognita (root knot nematodes)

Abstract

Parasitism is an important limiting factor responsible to cause damage to agricultural production. Plant parasitic root knot nematodes attack several economic crops in Pakistan. Plant- parasitic nematodes considerably add huge losses to economies in the top tomatoes crop producing countries throughout the world, instead of controlling the main pathogenic nematode species as usual; one of the innovative strategies to control plant-parasitic nematodes would be to manage diversity in communities in order to lead them to be less pathogenic. The plants and their materials are one of the potential remedies for nematodes management. Turmeric (Curcuma longa) along with its several biological applications may serve as a biopesticide against Meloidogyne incognita, a nematode species. A bioassay guided isolation of various fractions of turmeric was subjected to nematicidal activity in comparison with Azadirachta indica against Meloidogyne incognita larvae at the concentration of 0.25, 0.5, and 1% for 48 hours. Alongside, Larvae and eggs of nematodes were inoculated around the tomato seedlings in experiments with turmeric in a growth chamber. The control contains water instead of turmeric. Root gall severity and final nematode population were suppressed significantly. It was observed that the use of turmeric is very important for selected plant parasitic nematodes management.

Bazı baharat ekstraktlarının Meloidogyne arenaria (Neal, 1889) Chitwood, 1949 (Tylenchida: Meloidogynidae)’ya karşı nematisidal potansiyellerinin araştırılması

“…According to Ulfa et al (2021), turmeric extract in various solvents significantly inhibited RKN egg hatching and root penetration but had no effect on RKN development or reproduction. Rashid et al (2021) used turmeric against M. incognita and found that while maximum mortality was achieved up to 20%, root gall severity and final nematode population were significantly suppressed, which is consistent with our findings. It was discovered that the use of turmeric is crucial for RKN management.…”

Impact of engineered nano silver on root- knot nematode, Meloidogyne incognita and on DNA damage in tomato plants under screen house conditions

“…al., 9 ; Neeraj et.al., 42 ; and Rashid et. al., 43 who reported suppressive effect on nematode activity and pathogenicity, using of Curcuma comosa which may be due to its high containing of nematicidal compounds on plant parasitic nematodes, such as alkaloids, diphenylheptanoids, phenolics, fatty acids, iso-thiocyanates, and thiophenics without any hazard effect on non-target organisms 5,43,44,45 . On the other hand, the enhancing in the plant growth parameters agreed with Yasmeen et.…”