Abstract
Fertilizer costs are major components of maize production, yet fertilizer application rates are rarely constrained to reflect their overuse or permanent loss. Plant growth promoting bacteria (PGPB) reduce fertilizer inputs and seed inoculation is the main method of PGPB application but competition with rhizosphere microorganisms reduces their effectiveness. Proper inoculant formulation and the development of delivery methods for nonnodulating plants are key issues for the future success of this technology. Here, we evaluate the agronomical potential of a new biofertilizer model carrying out five field experiments in low fertility soil using a foliar spray application of Herbaspirillum seropedicae and humic acids based on different urea-N concentrations (assay 1 and 2); evaluation the application time (assay 3); and crop maize for silage production (assay 4 and 5). The use of PGPB and humic acids significantly increased maize grain production at all urea-N rates (dry season) and less than 75 kg N-urea ha -1 (rain season). The grain production was related with application time and the inoculant increased shoot/dry root biomass in maize for silage production. PGPB used together with humic acids applied as foliar spray had agronomical value, offering an alternative method for wider agricultural use of bioinoculants.
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Claims 5
Claim · model-written summary
Foliar bacteria and humic acids significantly increased maize grain production at all nitrogen rates in the dry season.
- Treatment
- PGPB and humic acidse0
- Interactor
- Herbaspirillum seropedicaeHerbaspirillum seropedicaee1symbiont
- Outcome
- maize grain productione0
- Direction
- increasede0
- Qualifier
- all urea-N rates (dry season)e0
Zea maysNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The use of PGPB and humic acids significantly increased maize grain production at all urea-N rates (dry season)”
e1“Herbaspirillum seropedicae and humic acids”
Claim · model-written summary
Foliar bacteria and humic acids significantly increased maize grain production below 75 kg N-urea per hectare in the rainy season.
- Treatment
- PGPB and humic acidse0
- Interactor
- Herbaspirillum seropedicaeHerbaspirillum seropedicaee1symbiont
- Outcome
- maize grain productione0
- Direction
- increasede0
- Qualifier
- less than 75 kg N-urea ha -1 (rain season)e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The use of PGPB and humic acids significantly increased maize grain production at all urea-N rates (dry season) and less than 75 kg N-urea ha -1 (rain season)”
e1“Herbaspirillum seropedicae and humic acids”
Claim · model-written summary
Maize grain production was related to application time.
Not reportedTaxon
Verbatim
e0“The grain production was related with application time”
Claim · model-written summary
The inoculant increased maize shoot and dry root biomass for silage production.
- Treatment
- inoculante0
- Interactor
- Herbaspirillum seropedicaeHerbaspirillum seropedicaee1symbiont
- Outcome
- shoot/dry root biomasse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the inoculant increased shoot/dry root biomass in maize for silage production”
e1“Herbaspirillum seropedicae and humic acids”
Claim · model-written summary
The authors judge foliar PGPB with humic acids to have agronomic value as an alternative bioinoculant application method.
- Outcome
- alternative method for wider agricultural use of bioinoculantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“PGPB used together with humic acids applied as foliar spray had agronomical value, offering an alternative method for wider agricultural use of bioinoculants.”
e1“crop maize for silage production”
The same questions in other papers
inoculation · Herbaspirillum seropedicae · Zea mays (maize)Results agree
7 papers in the same direction as this paper
- positive
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See all 8 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.