Abstract
The contribution of indigenous arbuscular mycorrhiza (AM) on phosphorus (P) uptake by groundnut was examined in a low P field soil. The fungicide benomyl was applied to eradicate mycorrhizal infection. The treatments consisted of three P levels viz. 0, 50 and 400 mg P kg-1 soil, with and without benomyl application. Groundnut as test crop was sown two weeks after the application of benomyl and was harvested four times covering the whole growth period. At each harvest, the shoot yield, shoot P concentration, root length, soil solution P (CLi) and per cent root infection by AM was determined for benomyl treated and untreated soil at all P levels. Benomyl showed no effect on soil solution P concentration. When P was limiting, application of benomyl did reduce early groundnut growth by 40-50% at P-0, and by 25-30% at P-50. At high P supply (P-400), benomyl had little or no effect on dry matter production. Thus, indicate that the effect of benomyl on plant growth was by its influence on P uptake from soil. Phosphorus supply affected percentage of root infected by AM which was 40% of the roots at P-0, and decreased to around 30% and 10% at P-50 and P-400. In the early growing season, the P influx of maize was dependent on P in soil solution and the effect of AM was rather large. At high P supply, the contribution of AM to P influx showed a decrease. Without or low AM infection and at low P level, the P influx was 62% of that with AM. During early growth period groundnut showed a similar behaviour as maize at middle growth stage and without AM reduction of P influx, which was to an extent of 67%. In absolute terms AM is more important at maximum growth in the early growth season for groundnut. It is evident from the present investigation that AM may make an significant contribution by about 35 % to the P nutrition of groundnut, but other factors, like P solubilization by root exudates, may be even more important.
Abstract from the paper’s OpenAlex record; open copy licensed cc-by. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 11
Claim · model-written summary
Benomyl did not affect soil-solution phosphorus concentration.
- Taxon
- Groundnut
Arachis hypogaeae1 - Treatment
- Benomyle0
- Outcome
- soil solution P concentratione0
- Direction
- no effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Benomyl showed no effect on soil solution P concentration.”
e1“Groundnut as test crop”
Claim · model-written summary
At P-0, benomyl reduced early groundnut growth by 40-50%.
- Taxon
- groundnutArachis hypogaeae0
- Treatment
- application of benomyle0
- Outcome
- early groundnut growthe0
- Direction
- reducee0
- Value
- 40-50%e0
- Qualifier
- P-0e0
- Comparator
- without benomyl applicatione1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“application of benomyl did reduce early groundnut growth by 40-50% at P-0”
e1“with and without benomyl application”
Claim · model-written summary
At P-50, benomyl reduced early groundnut growth by 25-30%.
- Taxon
- groundnutArachis hypogaeae0
- Treatment
- application of benomyle0
- Outcome
- early groundnut growthe0
- Direction
- reducee0
- Value
- 25-30%e0
- Qualifier
- P-50e0
- Comparator
- without benomyl applicatione1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“application of benomyl did reduce early groundnut growth by 40-50% at P-0, and by 25-30% at P-50”
e1“with and without benomyl application”
Claim · model-written summary
At P-400, benomyl had little or no effect on dry matter production.
- Taxon
- groundnutArachis hypogaeae2
- Treatment
- benomyle0
- Outcome
- dry matter productione0
- Direction
- little or no effecte0
- Qualifier
- P-400e0
- Comparator
- without benomyl applicatione1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At high P supply (P-400), benomyl had little or no effect on dry matter production.”
e1“with and without benomyl application”
e2“groundnut growth”
Claim · model-written summary
Groundnut root mycorrhizal infection was 40% at P-0.
- Taxon
- groundnutArachis hypogaeae1
- Interactor
- AMe0symbiont
- Outcome
- percentage of root infected by AMe0
- Value
- 40%e0
- Qualifier
- P-0e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“percentage of root infected by AM which was 40% of the roots at P-0”
e1“groundnut growth”
Claim · model-written summary
Groundnut root mycorrhizal infection decreased to around 30% at P-50.
- Taxon
- groundnutArachis hypogaeae1
- Interactor
- AMe0symbiont
- Outcome
- percentage of root infected by AMe0
- Direction
- decreasede0
- Value
- 30%e0
- Qualifier
- P-50e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“percentage of root infected by AM which was 40% of the roots at P-0, and decreased to around 30% and 10% at P-50 and P-400”
e1“groundnut growth”
Claim · model-written summary
Groundnut root mycorrhizal infection decreased to around 10% at P-400.
- Taxon
- groundnutArachis hypogaeae1
- Interactor
- AMe0symbiont
- Outcome
- percentage of root infected by AMe0
- Direction
- decreasede0
- Value
- 10%e0
- Qualifier
- P-400e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“percentage of root infected by AM which was 40% of the roots at P-0, and decreased to around 30% and 10% at P-50 and P-400”
e1“groundnut growth”
Claim · model-written summary
At high phosphorus supply, the mycorrhizal contribution to phosphorus influx decreased.
- Taxon
- groundnutArachis hypogaeae1
- Treatment
- high P supplye0
- Interactor
- AMe0symbiont
- Outcome
- contribution of AM to P influxe0
- Direction
- decreasee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At high P supply, the contribution of AM to P influx showed a decrease.”
e1“groundnut growth”
Claim · model-written summary
Groundnut without mycorrhizal infection had phosphorus influx 62% of that with infection at low phosphorus.
- Taxon
- groundnutArachis hypogaeae1
- Interactor
- AMe0symbiont
- Outcome
- P influxe0
- Value
- 62%e0
- Qualifier
- low P levele0
- Comparator
- with AMe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Without or low AM infection and at low P level, the P influx was 62% of that with AM.”
e1“groundnut growth”
Claim · model-written summary
Without mycorrhiza, phosphorus influx in early groundnut growth was reduced to 67%.
- Taxon
- groundnutArachis hypogaeae0
- Interactor
- AMe0symbiont
- Outcome
- P influxe0
- Direction
- reductione0
- Value
- 67%e0
- Qualifier
- early growth periode0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“During early growth period groundnut showed a similar behaviour as maize at middle growth stage and without AM reduction of P influx, which was to an extent of 67%.”
Claim · model-written summary
Mycorrhiza was estimated to contribute about 35% of groundnut phosphorus nutrition.
- Taxon
- groundnutArachis hypogaeae0
- Interactor
- AMe0symbiont
- Outcome
- P nutritione0
- Value
- 35 %e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“AM may make an significant contribution by about 35 % to the P nutrition of groundnut”
The same questions in other papers
benomyl · growth · Arachis hypogaea (peanut)Positive and negative results
1 in the opposite direction
- positive
benomyl · yield · Arachis hypogaea (peanut)Positive and negative results
1 paper in the same direction as this paper · 4 in the opposite direction
- positive
- positive
- positive
2 papers more in this group
See all 6 papers →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.