Abstract
Cowpea [Vigna unguiculata (L.) Walp.] is a legume of socioeconomic importance in the northern region of the country, however, its production requires high fertilizer costs, especially nitrogen fertilizers. The use of techniques with the potential to increase crop productivity, such as the application of plant regulators (brassinosteroids-BRs) and the use of nitrogen (N) are necessary. Thus, the objective of this work was to evaluate the vegetative and reproductive phases of cowpea (BR3-Tracuateua) in relation to the application of BRs, mineral nitrogen fertilization and inoculation with the bacterium Azospirillum brasilense. The research was carried out in the experimental area of the Federal Rural University of the Amazon, Campus Capitão Poço. An experimental design was used in randomized blocks, with three replications, in a 3 x 4 factorial scheme: three N supply conditions (Without N, with mineral N and with biological N) and foliar application of four doses of BRs (0, 15, 30 and 45nM). The growth and production variables were not significantly influenced by the application of BRs and the forms of N supply. However, M100 and productivity were increased by the supply of N, both mineral and biological. Therefore, inoculation with Azospirillum brasilense in cowpea cultivation becomes a viable practice, with the objective of supplying N to plants, replacing mineral nitrogen fertilization.
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Claims 3
Claim · model-written summary
Growth and production variables of cowpea were not significantly influenced by brassinosteroid application or the forms of N supply.
- Taxon
- cowpea
Vigna unguiculatat0 - Treatment
- application of BRs and the forms of N supplye0
- Outcome
- growth and production variablese0
- Direction
- not significantly influencede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“brassinosteroid in cowpea in the Amazon”
e0“The growth and production variables were not significantly influenced by the application of BRs and the forms of N supply”
Claim · model-written summary
M100 and productivity of cowpea were increased by N supply, both mineral and biological.
- Taxon
- cowpeaVigna unguiculatat0
- Treatment
- supply of N, both mineral and biologicale0
- Outcome
- M100 and productivitye0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“brassinosteroid in cowpea in the Amazon”
e0“M100 and productivity were increased by the supply of N, both mineral and biological”
Claim · model-written summary
Inoculation with Azospirillum brasilense in cowpea is a viable practice to supply N to plants in place of mineral nitrogen fertilization.
- Taxon
- cowpeaVigna unguiculatae0
- Treatment
- inoculation with Azospirillum brasilensee0
- Interactor
- Azospirillum brasilense
Azospirillum brasilensee0symbiont - Outcome
- viable practicee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“brassinosteroid in cowpea in the Amazon”
e0“inoculation with Azospirillum brasilense in cowpea cultivation becomes a viable practice, with the objective of supplying N to plants, replacing mineral nitrogen fertilization”
The same questions in other papers
nitrogen · yield · Vigna unguiculata (cowpea)Results differ
5 papers in the same direction as this paper · 62 in the opposite direction
- positive
- positive
- positive
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See all 68 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.