Abstract
Nitrogen fertilization in crop sorghum during the off-season may have a lower cost-benefit ratio than expected, due to the residual effect of the predecessor crop. However, the use of growth-promoting bacteria can be an economical alternative to increase crop yield in the Cerrado. The objective was to evaluate the response of grain sorghum to nitrogen fertilization and its inoculation by A. brasilense. A complete randomized block design in a 5 x 2 factorial arrangement was used, with five replications of the following treatments: recommended amount of N (120 kg ha-1 of N-urea), divided into 0 %-100 %, 25 % -75 %, 50 %-50 % and 100 %-0 %, in sowing and coverage, respectively, and the control (without N); with and without inoculation via sorghum seed. The morphological and productivity components of the crop were evaluated. The application of 100 % of N in the sowing provided larger plants and the 50 %-50 % installment provided smaller plants. The plants did not respond to inoculation by A. brasilense. The yield components of sorghum grown in succession to soybean, rainfed, do not change due to A. brasilense inoculation and supply or installment of nitrogen fertilization.
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Claims 5
Claim · model-written summary
Applying all N at sowing produced larger sorghum plants.
SorghumNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The application of 100 % of N in the sowing provided larger plants”
e1“grain sorghum to nitrogen fertilization”
Claim · model-written summary
A 50 %-50 % N installment produced smaller sorghum plants.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the 50 %-50 % installment provided smaller plants”
e1“grain sorghum to nitrogen fertilization”
Claim · model-written summary
Sorghum plants did not respond to A. brasilense inoculation.
- Treatment
- inoculation by A. brasilensee0
- Interactor
- A. brasilense
Azospirillum brasilensee0symbiont - Outcome
- plants did not responde0
- Direction
- did not responde0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The plants did not respond to inoculation by A. brasilense”
t0“SORGHUM”
Claim · model-written summary
Azospirillum inoculation did not change yield components of rainfed sorghum after soybean.
- Treatment
- A. brasilense inoculatione0
- Interactor
- A. brasilenseAzospirillum brasilensee0symbiont
- Outcome
- yield componentse0
- Direction
- do not changee0
- Qualifier
- grown in succession to soybean, rainfede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The yield components of sorghum grown in succession to soybean, rainfed, do not change due to A. brasilense inoculation and supply or installment of nitrogen fertilization”
Claim · model-written summary
Nitrogen supply or installment did not change yield components of rainfed sorghum after soybean.
- Treatment
- supply or installment of nitrogen fertilizatione0
- Outcome
- yield componentse0
- Direction
- do not changee0
- Qualifier
- grown in succession to soybean, rainfede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The yield components of sorghum grown in succession to soybean, rainfed, do not change due to A. brasilense inoculation and supply or installment of nitrogen fertilization”
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