Abstract
Nitrogen fertilization in pastures is considered one of the primary limiting factors that significantly enhance forage biomass production. Traditional chemical fertilizers used in crop cultivation are derived from petrochemical and mining industries. These production chains have undergone continuous and consistent structural changes year after year, affecting the prices of these inputs for farmers, consequently escalating production costs and even rendering investment in livestock farming unfeasible. For this reason, research becomes crucial to evaluate alternative techniques that can complement or fulfill the nitrogen demand in forage crops. The bacterium Azospirillum brasilense has emerged as a viable alternative to reduce costs in pasture establishment and maintenance, serving as a nitrogen source when compared to traditional sources. The objective of this study was to assess the effect of Azospirillum brasilense inoculation on the growth and production of Panicum maximum cv. Mombaça. The experimental design employed was a randomized complete block design with four treatments and four replications. Each plot consisted of three plants, resulting in a total of 48 experimental units. The treatments comprised: T1 - natural soil (NS), T2 - Azospirillum brasilense (BAC.), T3 - nitrogen topdressing (N), T4 - Azospirillum brasilense and nitrogen topdressing (BAC+N). Evaluations were conducted at 60 and 90 days after sowing (DAS), assessing the following variables: plant height (PH), number of leaves (NL), number of tillers (NT), aboveground green biomass (AGGB), aboveground dry biomass (ADBB), root fresh biomass (RFB), and root dry biomass (RDB). Significant effects (P<0.05) were observed for inoculation and nitrogen topdressing on the assessed traits: plant height, number of leaves, number of tillers, aboveground green biomass, aboveground dry biomass, root fresh biomass, and root dry biomass. Notably, nitrogen topdressing either solely or in combination with seed inoculation of the forage yielded positive outcomes for all studied variables at both 60 and 90 DAS. A favorable impact on the development of Mombaça grass was evident across all parameters studied in samples receiving nitrogen topdressing and Azospirillum spp. inoculation.
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Claims 3
Claim · model-written summary
Inoculation with Azospirillum brasilense significantly affected Mombaça grass height, leaves, tillers and aboveground and root biomass.
- Taxon
- Panicum maximum
.jpg?width=60)
Megathyrsus maximuse0 - Material
- Mombaçae0
- Treatment
- inoculatione1
- Interactor
- Azospirillum brasilense
Azospirillum brasilensee0symbiont - Outcome
- plant height, number of leaves, number of tillerse1
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“Azospirillum brasilense inoculation on the growth and production of Panicum maximum cv. Mombaça”
e1“Significant effects (P<0.05) were observed for inoculation and nitrogen topdressing on the assessed traits: plant height, number of leaves, number of tillers, aboveground green biomass, aboveground dry biomass, root fresh biomass, and root dry biomass.”
Claim · model-written summary
Nitrogen topdressing improved all studied Mombaça grass variables at 60 and 90 days after sowing.
- Taxon
- Panicum maximumMegathyrsus maximuse0
- Material
- Mombaçae0
- Treatment
- nitrogen topdressinge1
- Outcome
- all studied variablese1
- Direction
- positive outcomese1
- Qualifier
- both 60 and 90 DASe1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Panicum maximum cv. Mombaça”
e1“nitrogen topdressing either solely or in combination with seed inoculation of the forage yielded positive outcomes for all studied variables at both 60 and 90 DAS”
Claim · model-written summary
Combined nitrogen topdressing and seed inoculation improved all studied Mombaça grass variables at 60 and 90 days after sowing.
- Taxon
- Panicum maximumMegathyrsus maximuse0
- Material
- Mombaçae0
- Treatment
- Azospirillum brasilense and nitrogen topdressinge2
- Interactor
- Azospirillum brasilenseAzospirillum brasilensee2symbiont
- Outcome
- all studied variablese1
- Direction
- positive outcomese1
- Qualifier
- both 60 and 90 DASe1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Panicum maximum cv. Mombaça”
e1“nitrogen topdressing either solely or in combination with seed inoculation of the forage yielded positive outcomes for all studied variables at both 60 and 90 DAS”
e2“Azospirillum brasilense and nitrogen topdressing (BAC+N)”
The same questions in other papers
inoculation · Azospirillum brasilense · Megathyrsus maximus (Guinea grass)Results agree
1 paper in the same direction as this paper
- 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.