Abstract
Use of microbes for environmentally safe plant disease management largely depends on antagonistic ability of the isolate, and Trichoderma spp. occupies a major domain in biocontrol research. An attempt was made to improve the bioefficacy of the Trichoderma isolate through chitin (0.5% and 1%) and ammonium sulphate (0.5%, 1% and 1.5%) as amendments in the synthetic medium at UBKV, Coochbehar, India during 2007-2009. Competitive saprophytic ability of the Trichoderma isolate recorded highest with 1% ammonium sulphate amendment. Trichoderma isolate showed higher chitinase activity with ammonium sulphate addition irrespective of dose. Ammonium sulphate addition also increased the plant growth promoting ability of the Trichoderma isolate. Chitin enhanced the bioefficacy of the Trichoderma isolate but it is not at par with ammonium sulphate and highest bioefficacy was found when the Trichoderma isolate was grown with 1% ammonium sulphate as reflected in the antagonism index value. In vivo trial was conducted with Trichoderma grown on amended and non-amended media with cowpea as test plant and Rhizoctonia solani as test pathogen. Reduction in pre-emergence damping off was recorded with addition of Trichoderma. Highest reduction of the disease was observed in chitin amendment. Vigor index was also further increased with addition of amendments
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Claims 8
Claim · model-written summary
One percent ammonium sulphate gave the highest competitive saprophytic ability of Trichoderma.
- Taxon
- cowpea
Vigna unguiculatae2 - Treatment
- 1% ammonium sulphate amendmente0
- Interactor
- Trichoderma
Trichodermae0biocontrol_agent - Outcome
- Competitive saprophytic ability of the Trichoderma isolatee0
- Direction
- higheste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Competitive saprophytic ability of the Trichoderma isolate recorded highest with 1% ammonium sulphate amendment”
e2“with cowpea as test plant”
Claim · model-written summary
Ammonium sulphate increased Trichoderma chitinase activity at all doses.
- Taxon
- cowpeaVigna unguiculatae2
- Treatment
- ammonium sulphate additione0
- Interactor
- TrichodermaTrichodermae0biocontrol_agent
- Outcome
- Trichoderma isolate showed higher chitinase activitye0
- Direction
- highere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Trichoderma isolate showed higher chitinase activity with ammonium sulphate addition irrespective of dose”
e2“with cowpea as test plant”
Claim · model-written summary
Ammonium sulphate increased plant growth promoting ability of Trichoderma.
- Taxon
- cowpeaVigna unguiculatae2
- Treatment
- Ammonium sulphate additione0
- Interactor
- TrichodermaTrichodermae0biocontrol_agent
- Outcome
- plant growth promoting ability of the Trichoderma isolatee0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Ammonium sulphate addition also increased the plant growth promoting ability of the Trichoderma isolate”
e2“with cowpea as test plant”
Claim · model-written summary
Chitin enhanced Trichoderma bioefficacy.
- Taxon
- cowpeaVigna unguiculatae2
- Treatment
- Chitine0
- Interactor
- TrichodermaTrichodermae0biocontrol_agent
- Outcome
- bioefficacy of the Trichoderma isolatee0
- Direction
- enhancede0
- Comparator
- ammonium sulphatee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Chitin enhanced the bioefficacy of the Trichoderma isolate but it is not at par with ammonium sulphate”
e2“with cowpea as test plant”
Claim · model-written summary
One percent ammonium sulphate produced the highest antagonism index bioefficacy.
- Taxon
- cowpeaVigna unguiculatae2
- Treatment
- 1% ammonium sulphatee0
- Interactor
- TrichodermaTrichodermae0biocontrol_agent
- Outcome
- antagonism index valuee0
- Direction
- higheste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“highest bioefficacy was found when the Trichoderma isolate was grown with 1% ammonium sulphate as reflected in the antagonism index value”
e2“with cowpea as test plant”
Claim · model-written summary
Trichoderma reduced pre-emergence damping off in cowpea.
- Taxon
- cowpeaVigna unguiculatae2
- Treatment
- addition of Trichodermae0
- Interactor
- TrichodermaTrichodermae0biocontrol_agent
- Outcome
- pre-emergence damping offe0
- Direction
- Reductione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Reduction in pre-emergence damping off was recorded with addition of Trichoderma”
e2“with cowpea as test plant”
Claim · model-written summary
Chitin amendment gave the greatest reduction of disease.
- Taxon
- cowpeaVigna unguiculatae2
- Treatment
- chitin amendmente0
- Outcome
- the diseasee0
- Direction
- Highest reductione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Highest reduction of the disease was observed in chitin amendment”
e2“with cowpea as test plant”
Claim · model-written summary
Amendments further increased vigor index.
- Taxon
- cowpeaVigna unguiculatae2
- Treatment
- addition of amendmentse0
- Outcome
- Vigor indexe0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Vigor index was also further increased with addition of amendments”
e2“with cowpea as test plant”
The same questions in other papers
Trichoderma · disease · Vigna unguiculata (cowpea)Results agree
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- positive
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other · disease · Vigna unguiculata (cowpea)Positive and negative results
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22 papers in the same direction as this paper · 3 in the opposite direction
- no effect
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See all 26 papers →resistance inducer · disease · Vigna unguiculata (cowpea)Results agree
2 papers in the same direction as this paper
- positive
- positive
Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.