Abstract
Inoculant biofertilizer application increased fertilizer nitrogen (N) use efficiency in Vietnam in some previous field experiments. Similar results may be obtained in Australia. With this view in mind, a greenhouse experiment and two field experiments were conducted using a Vietnamese inoculant biofertilizer (BioGro) and several other plant growth promoting (PGP) bacteria. In the greenhouse trial, bacterial inoculations increased shoot and root weights of rice plants significantly. In the field experiments, particularly with Rhizobium leguminosarum, similar effects including significant differences in nitrogen uptake in vegetative matter were observed at the panicle initiation (PI) stage. However, these effects were not significant on grain yield at harvest and it is concluded that the much longer period of growth for Australian rice may allow compensation between treatments. Re-inoculation of plants at the PI stage, and lower application rates of N fertilizer in at least two splits are suggested for future field experiments.
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Claims 4
Claim · model-written summary
Bacterial inoculations significantly increased shoot and root weights of rice plants in the greenhouse.
- Taxon
- rice
Oryza sativae1 - Treatment
- bacterial inoculationse1
- Outcome
- shoot and root weightse1
- Direction
- increasede1
- Setting
- greenhouse triale1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“In the greenhouse trial, bacterial inoculations increased shoot and root weights of rice plants significantly”
Claim · model-written summary
Rhizobium leguminosarum inoculation gave significant differences in nitrogen uptake in vegetative matter at panicle initiation in the field.
- Taxon
- riceOryza sativat0
- Organ / stage
- panicle initiation (PI) stagee2
- Treatment
- Rhizobium leguminosarume2
- Interactor
- Rhizobium leguminosarum
Rhizobium leguminosarume2symbiont - Outcome
- nitrogen uptake in vegetative mattere2
- Setting
- field experimentse2
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“nutrition of rice in Australia”
e2“In the field experiments, particularly with Rhizobium leguminosarum, similar effects including significant differences in nitrogen uptake in vegetative matter were observed at the panicle initiation (PI) stage”
Claim · model-written summary
Bacterial inoculant biofertilizers did not significantly change rice grain yield at harvest.
- Taxon
- riceOryza sativat0
- Treatment
- bacterial inoculant biofertilizerst0
- Outcome
- grain yielde3
- Direction
- no_changeinferrede3
- Qualifier
- the much longer period of growth for Australian rice may allow compensation between treatmentse3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effects of bacterial inoculant biofertilizers on growth, yield and nutrition of rice in Australia”
e3“However, these effects were not significant on grain yield at harvest and it is concluded that the much longer period of growth for Australian rice may allow compensation between treatments”
Claim · model-written summary
The authors suggest re-inoculating rice at panicle initiation and applying lower N rates in at least two splits in future field experiments.
- Taxon
- riceOryza sativat0
- Outcome
- Re-inoculation of plants at the PI stagee4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“nutrition of rice in Australia”
e4“Re-inoculation of plants at the PI stage, and lower application rates of N fertilizer in at least two splits are suggested for future field experiments”
The same questions in other papers
inoculation · yield · Oryza sativa (rice)Positive and negative results
35 papers in the same direction as this paper · 382 in the opposite direction
- positive
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See all 418 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.