Abstract:
By comparing the interactions of the generalist
Prodenia litura, the specialist
Gadirtha inexacta and
Meloidogyne incognita on the growth and biomass of
Sapium sebiferum, the interaction patterns between different natural enemies and the response strategies of plants were analyzed. The results showed that in the absence of
Meloidogyne incognita, the two kinds of above-ground natural enemies significantly reduced the diameter of
Sapium sebiferum, and the plant height with
Gadirtha inexacta herbivory was significantly lower than the treatment without the presence of
Meloidogune incognita. In the case of
Meloidogune incognita, there was no significant difference in the effect of above-ground natural enemies on the diameter and plant height of
Sapium sebiferum.
Meloidogune incognita significantly increased the above-ground biomass and total biomass in the
Gadirtha inexacta treatment group. Therefore,
Meloidogune incognita and
Gadirtha inexacta produced an antagonistic effect on each other, thus formed an additive effect on the growth and biomass of
Sapium sebiferum. However, this pattern was not significant between
Meloidogune incognita and
Prodenia litura.