Abstract
The fungus Sclerotium rolfsii is presently under development as a bioherbicide for broadleaf weed species by using fungus-infested solid substrates as application material in this laboratory.We examined the effect of host-plant growth stage,dosage of inoculum,soil moisture condition,temperature,and damp soil duration on plant mortality and fresh weight inhibition of eclipta(Eclipta prostrata) caused by isolate SC64 in pot experiments under greenhouse conditions.Perfect control efficacy was recorded following application before 5 leaf stage,with over 100 g m 2fungus-infested substrates(rice husk/bran substrate,2:1,v/v),and exposure of weeds to 27 33 ℃,soil of 90% water holding capacity and at least 24 h damp soil duration.A simulation experiment of dry-seeded rice was carried out to examine the performance of S.rolfsii SC64 to broadleaf weeds under greenhouse conditions.Results showed that isolate SC64(120 g m 2) caused 81% and 74% plant mortality,83.8% and 82.5% fresh weight reduction for Rotala indica and Monochoria vaginalis,respectively.Plant mortality and fresh weight reduction for Cyperus difformis and Ammannia arenaria were relatively lower,which were approximately 50% and 60% 65%,respectively.It was indicated that this fungus could be a good candidate for further study and a promising biocontrol agent against broadleaf weeds under specific environmental conditions.
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Claims 6
Claim · model-written summary
Early application under specified substrate, temperature and moisture gave perfect eclipta control.
- Treatment
- over 100 g m 2fungus-infested substratese0
- Outcome
- Perfect control efficacye0
- Direction
- Perfecte0
_Eclipta_prostrata_-%E9%A6%99%E6%B8%AF%E9%9D%92%E6%9D%BE%E8%A7%80_Tuen_Mun%2C_Hong_Kong-_(9237496731).jpg?width=60){kind=small}
EcliptaNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Eclipta_prostrata_-%E9%A6%99%E6%B8%AF%E9%9D%92%E6%9D%BE%E8%A7%80_Tuen_Mun%2C_Hong_Kong-_(9237496731).jpg?width=500)
Verbatim
e0“Perfect control efficacy was recorded following application before 5 leaf stage,with over 100 g m 2fungus-infested substrates(rice husk/bran substrate,2:1,v/v),and exposure of weeds to 27 33 ℃,soil of 90% water holding capacity and at least 24 h damp soil duration”
e1“eclipta(Eclipta prostrata)”
Claim · model-written summary
SC64 caused 81% mortality in Rotala indica.
- Taxon
- Rotala indica
Rotala indicae0 - Treatment
- isolate SC64(120 g m 2)e0
- Outcome
- plant mortalitye0
- Direction
- mortalitye0
- Value
- 81%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“isolate SC64(120 g m 2) caused 81% and 74% plant mortality,83.8% and 82.5% fresh weight reduction for Rotala indica and Monochoria vaginalis,respectively”
Claim · model-written summary
SC64 caused 74% mortality in Monochoria vaginalis.
- Taxon
- Monochoria vaginalise0
- Treatment
- isolate SC64(120 g m 2)e0
- Outcome
- plant mortalitye0
- Direction
- mortalitye0
- Value
- 74%e0
Not reportedComparator
Verbatim
e0“isolate SC64(120 g m 2) caused 81% and 74% plant mortality,83.8% and 82.5% fresh weight reduction for Rotala indica and Monochoria vaginalis,respectively”
Claim · model-written summary
SC64 reduced Rotala indica fresh weight 83.8%.
- Taxon
- Rotala indicaRotala indicae0
- Treatment
- isolate SC64(120 g m 2)e0
- Outcome
- fresh weighte0
- Direction
- reductione0
- Value
- 83.8%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“isolate SC64(120 g m 2) caused 81% and 74% plant mortality,83.8% and 82.5% fresh weight reduction for Rotala indica and Monochoria vaginalis,respectively”
Claim · model-written summary
SC64 reduced Monochoria vaginalis fresh weight 82.5%.
- Taxon
- Monochoria vaginalise0
- Treatment
- isolate SC64(120 g m 2)e0
- Outcome
- fresh weighte0
- Direction
- reductione0
- Value
- 82.5%e0
Not reportedComparator
Verbatim
e0“isolate SC64(120 g m 2) caused 81% and 74% plant mortality,83.8% and 82.5% fresh weight reduction for Rotala indica and Monochoria vaginalis,respectively”
Claim · model-written summary
Cyperus difformis and Ammannia arenaria had approximately 50% mortality and 60–65% fresh weight reduction, relatively lower than other weeds.
- Taxon
- Cyperus difformis
Cyperus difformise0 - Outcome
- Plant mortality and fresh weight reductione0
- Direction
- lowere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Plant mortality and fresh weight reduction for Cyperus difformis and Ammannia arenaria were relatively lower,which were approximately 50% and 60% 65%,respectively”