About this article
Published Online: Feb 18, 2022
Page range: 1 - 18
Received: Aug 23, 2021
DOI: https://doi.org/10.21307/jofnem-2022-002
Keywords
© 2022 Ernest C. Bernard et al., published by Sciendo
This work is licensed under the Creative Commons Attribution 4.0 International License.
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Experimental results on the use of hemp tissues and extracts for nematode management_
| Rotation crop with soybean | J2 numbers were reduced 30%, soybean yields increased 11% when soybean followed hemp | ||
| Chopped leaves incorporated into potted soil | Reproduction on tomato reduced 74% but plant growth parameters not significantly improved | ||
| Chopped leaves | 42% reduction 82% reduction | ||
| Pulverized leaves incorporated into soil | Galls decreased up to 54% on subsequent crop | ||
| Chopped leaves | Incorporation of leaves did not improve growth of False Eranthemum infected with the nematode | ||
| Whole plant extract | High nematode mortality | ||
| Plant extract | 70% mortality after 72 hr | ||
| Green manure or plant powder | For green manure, increased plant growth, reduced nematode numbers; for plant powder, reduced nematode numbers but no improvement in plant growth | ||
| Aqueous extract of stems, leaves, inflorescences | Weak effect on |
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| Ethanol extracts of roots, leaves, inflorescences | Highest attraction of dauer juveniles was to inflorescence extracts | ||
| Water extracts of plant tissue | High mortality of J2 | ||
| Root and shoot extracts | Effective mortality of nematode species tested down to 1:10 dilution | ||
| Root extract | Inhibited egg hatch, increased juvenile mortality | ||
| Leaf extract | 74–96% juvenile mortality | ||
| Leaf extract | 88% inhibition of egg hatch | ||
| Water extracts from ground leaves | J2 mortality was 92% or higher at dilutions of 1:5 to 1:40 | ||
| Water extracts from ground leaves | Activity of 10-day-old extracts to J2 remained above 94% | ||
| Hot and cold-water leaf extracts | Mortality increased with concentration, hot-water extracts more effective than cold extracts | ||
| Aqueous leaf extract | 100% mortality of J2 after 24 and 48 hr of exposure | ||
| Boiled aqueous leaf extract | Soaking chickpea seed in extract totally inhibited J2 invasion of seedlings | ||
| Water extract of leaves | 100% mortality of juveniles | ||
| Water extracts of macerated leaves | Plant growth improved and J2 numbers reduced 40% on brinjal (eggplant) but not as much as with margosa extract | ||
| Methanol extracts of dried, pulverized leaves | 89% mortality of J2 in 5% solution | ||
| Water extracts from ground leaves | Extracts gave high mortality of J2 after 72 hrs |