GREEN MANURE AND Pochonia chlamydosporia FOR Meloidogyne javanica CONTROL IN SOYBEAN

Abstract

Pochonia chlamydosporia (Pc) is a nematophagous fungus with saprotrophic activity. However, little is known about the interaction between Pc and green manure. This study aimed to investigate the interaction effects of different green manures and Pc on the control of Meloidogyne javanica in soybean. Two greenhouse experiments were conducted in different periods using a 6 × 2 factorial design, with six replicates. The first factor was green manure application (oat, brachiaria, crotalaria, millet, buckwheat, and untreated control) and the second factor was treatment with Pc (in-furrow application and untreated control). Cover crops were grown separately and applied to pots as green manure 15 days before soybean sowing. At 5 days after sowing, soybean was inoculated with 2 000 eggs and juveniles of M. javanica. At 60 days after inoculation, nematode and vegetative variables were determined. All green manures reduced nematode population levels, especially oat, crotalaria, and buckwheat. Pc treatment did not influence nematode population levels. Soybean plants treated with oat or crotalaria green manure had greater height than untreated plants in both experiments. The effects of factors on shoot fresh and dry weights differed between experiments, and green manure application did not affect root development. The findings confirmed the potential of plant residues to control M. javanica.

Implementation and Use of Green Manures for Weed Suppression in Sequential Maize Cropping

“…; these values are higher than those found in this experiment. Likewise, a study on the phytomass of green manures found diferent results for green biomass [40] than those found in this study.…”

Suppression of Meloidogyne javanica Infection in Peach (Prunus persica (L.) Batsch) Using Fungal Biocontrol Agents

“…These biocontrol agents can be used solely or in combinations with other nematode management approaches. A myriad of biological control agents have been reported to be effective against root-knot nematodes [39][40][41][42][43]50,51], but their effectiveness against root-knot nematodes of peach has not been studied. Therefore, four biocontrol agents viz.…”

“…These agents can be used singly or in combinations with other nematode management approaches. A myriad of biological control agents have been reported to be effective against root-knot nematodes [39][40][41][42][43]. One of the fungal biocontrol agents, Pochonia chlamydosporia, which parasitizes females and eggs of root-knot nematode, is distributed worldwide.…”

Revolutionizing nematode management to achieve global food security goals - An overview

“…Beneficial microbes can be explored as a means of controlling nematodes. Biological control of nematodes involves the use of natural enemies, such as fungi, bacteria, and other organisms, to manage nematode populations [ [89] , [90] , [91] , [92] , [93] , [94] , [95] ].…”