nema-green®
NEMATODES AGAINST GRUBS
The product nema-green® contains entomopathogenic nematodes of the species Heterorhabditis bacteriophora for effective and biological control of chafer grubs in the soil. Including Garden Chafer (Phyllopertha horticola), June Beetle (Amphimallon solstitiale), Japanese Beetle (Popilia japonica) Welsh Chafer (Hoplia philanthus).
| Active ingredient | Heterorhabditis bacteriophora |
| Formulation | Wettable powder |
| Package sizes | 50, 100, 250, 500 mio. |
| Shelf life | 6 weeks |
| Listings | OMRI, FiBL |
APPLICATION OF NEMA-GREEN®
nema-green® is dispersed in water and applied to moist soil with conventional spraying equipment or irrigation systems. Per hectare 5 billion nematodes are applied with 1,000 litres of water. Post-application irrigation washes the nematodes into the soil. The addition of wetting agents improves the distribution and establishment of nematodes in the soil.
MODE OF ACTION
The entomopathogenic nematodes of the species Heterorhabditis bacteriophora are a naturally occurring antagonist of chafer grubs. The infective juveniles carry cells of their bacterial symbiont. Applied to the soil, nematodes search for the host insect and invade via natural openings. Once inside, they release the symbiotic bacteria, which multiply and cause the death of the grubs within a few days after invasion. While feeding on the bacteria the nematodes reproduce. After two weeks, thousands of new generation nematodes emerge and search for further prey. This creates a lasting effect of the nematodes in the soil.
Nematodes enter through the mouth opening
EFFICACY OF NEMA-GREEN®
Due to nematode reproduction inside the infected grubs, control increases continuously during the weeks after application. When new generation nematodes emerge (2 weeks after application), soil should be moist to guarantee nematode migration. An application at the right time and under ideal soil conditions can reduce the grub population by 90%. Infected grubs turn red and are easy to distinguish from living ones. June Beetle grubs are well controlled in the first larval stage, which is present six weeks after his flight during end of June.
nema-green® is compatible with most chemical plant protection compounds, fertilizers and other beneficial insects. More information about the compatibility of nematodes can be found here:
EPN Compatibility
The symbiotic bacteria turn the infected grubs red
Nematodes of the species Heterorhabditis bacteriophora against white grubs in the soil
product information sheet nema-green®
