Field Experiment of Multi-microbial Agents against Root-knot Nematode Meloidogyne incognita on Lettuce

doi:10.16409/j.cnki.2095-039x.2017.06.016

Abstract

Abstract: In order to study the effect of multi-microbial agents, which was consisted of Purpureocillium lilacinum, Streptomyces olivaceus and Ochrobactrum pseudogrignonense, on root-knot nematodes in lettuce field, the experiment was conducted in a greenhouse with the commercial multi-microbial agent, which was mainly consisted of P. lilacinum, turfy soil and 10% fosthiazate granules as controls. The results showed that the 10% fosthiazate had the best effect up to 78.2% on lettuce root-knot nematode. The effect of multi-microbial agent on lettuce root-knot nematode at 44 dwas 34.9%, which was significantly superior to the commercial multi-microbial agent, turfy soil and the untreated control. Meanwhile, the application of multi-microbial agent could also promote plant growth. Both the fresh weight and the height of the multi-microbial agent treatment were significantly higher than the commercial multi-microbial agent, turfy soil and the untreated control. The total yield of multi-microbial agent treatment was also higher than other four treatments with the improvement of 47.2%. The results indicated that the multi-microbial agent could not only effectively control the lettuce root-knot nematode, but also improve the growth of the plant and the yield. Although the effect of the multi-microbial agent was not as good as the 10% fosthiazate, it gave us a newly effective and safe way to control root-knot nematodes on those leafy vegetables with short growth period.

Key words: root-knot nematode, multi-microbial agent, biocontrol, lettuce

CLC Number:

S476

YANG Ting, HU Jianyang, LIN Bin, XIANG Meichun. Field Experiment of Multi-microbial Agents against Root-knot Nematode Meloidogyne incognita on Lettuce[J]. journal1, 2017, 33(6): 826-832.

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