Abstract
Considering that nitrogen is the main macronutrient limiting pasture productivity, the aim of this study was to investigate the most appropriate day for nitrogen fertilization of the grasses Brachiaria brizantha BRS Piatã and Panicum maximum BRS Quênia. The experiment was conducted in a greenhouse in the city of Rondonópolis, located in the state of Mato Grosso, Brazil, using a completely randomized design. The treatments consisted of five nitrogen fertilization periods: 0; 2; 4; 6 and 8 days after defoliation. The dry mass of the leaf blade (DMLB), dry mass of stem + sheath (DMSS), dry mass of residue (DMRES) and root dry mass (RDM) were evaluated. The non-structural carbohydrate of the grass roots was also quantified. The later nitrogen fertilization after defoliation reduced DMLB (P< .01) and DMSS (P< .01) of the BRS Piatã palisadegrass, and DMRES of both grasses (P< .01). Higher levels of water soluble carbohydrates were observed when nitrogen fertilization was performed on grass cutting (day 0). Nitrogen fertilization of the BRS Piatã palisadegrass close the time of defoliation is recommended. For Quênia guineagrass, nitrogen can be applied between the cutting day and the eighth day after defoliation. For the root system, there is a higher content of water soluble carbohydrates in the BRS Piatã palisadegrass and greater accumulation of starch in the BRS Quênia guineagrass.
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Claims 9
Claim · model-written summary
Later nitrogen fertilization after defoliation reduced dry mass of the leaf blade (DMLB) of BRS Piatã palisadegrass.
- Taxon
- Brachiaria brizantha
Urochloa brizanthae0 - Material
- BRS Piatãe0
- Organ / stage
- leaf bladee2
- Treatment
- later nitrogen fertilization after defoliatione1
- Outcome
- DMLBe1
- Direction
- reducede1
- Setting
- greenhouse in the city of Rondonópolise3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Brachiaria brizantha BRS Piatã and Panicum maximum BRS Quênia”
e1“The later nitrogen fertilization after defoliation reduced DMLB (P< .01) and DMSS (P< .01) of the BRS Piatã palisadegrass, and DMRES of both grasses (P< .01)”
e2“dry mass of the leaf blade (DMLB), dry mass of stem + sheath (DMSS), dry mass of residue (DMRES) and root dry mass (RDM)”
e3“The experiment was conducted in a greenhouse in the city of Rondonópolis”
Claim · model-written summary
Later nitrogen fertilization after defoliation reduced dry mass of the stem and sheath (DMSS) of BRS Piatã palisadegrass.
- Taxon
- Brachiaria brizanthaUrochloa brizanthae0
- Material
- BRS Piatãe0
- Organ / stage
- stem + sheathe2
- Treatment
- later nitrogen fertilization after defoliatione1
- Outcome
- DMSSe1
- Direction
- reducede1
- Setting
- greenhouse in the city of Rondonópolise3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Brachiaria brizantha BRS Piatã and Panicum maximum BRS Quênia”
e1“The later nitrogen fertilization after defoliation reduced DMLB (P< .01) and DMSS (P< .01) of the BRS Piatã palisadegrass, and DMRES of both grasses (P< .01)”
e2“dry mass of the leaf blade (DMLB), dry mass of stem + sheath (DMSS), dry mass of residue (DMRES) and root dry mass (RDM)”
e3“The experiment was conducted in a greenhouse in the city of Rondonópolis”
Claim · model-written summary
Later nitrogen fertilization after defoliation reduced dry mass of residue (DMRES) of BRS Piatã palisadegrass.
- Taxon
- Brachiaria brizanthaUrochloa brizanthae0
- Material
- BRS Piatãe0
- Treatment
- later nitrogen fertilization after defoliatione1
- Outcome
- DMRESe1
- Direction
- reducede1
- Setting
- greenhouse in the city of Rondonópolise3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Brachiaria brizantha BRS Piatã and Panicum maximum BRS Quênia”
e1“The later nitrogen fertilization after defoliation reduced DMLB (P< .01) and DMSS (P< .01) of the BRS Piatã palisadegrass, and DMRES of both grasses (P< .01)”
e2“dry mass of the leaf blade (DMLB), dry mass of stem + sheath (DMSS), dry mass of residue (DMRES) and root dry mass (RDM)”
e3“The experiment was conducted in a greenhouse in the city of Rondonópolis”
Claim · model-written summary
Later nitrogen fertilization after defoliation reduced dry mass of residue (DMRES) of BRS Quênia guineagrass.
- Taxon
- Panicum maximum
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Megathyrsus maximuse0 - Material
- BRS Quêniae0
- Treatment
- later nitrogen fertilization after defoliatione1
- Outcome
- DMRESe1
- Direction
- reducede1
- Setting
- greenhouse in the city of Rondonópolise3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“Brachiaria brizantha BRS Piatã and Panicum maximum BRS Quênia”
e1“The later nitrogen fertilization after defoliation reduced DMLB (P< .01) and DMSS (P< .01) of the BRS Piatã palisadegrass, and DMRES of both grasses (P< .01)”
e3“The experiment was conducted in a greenhouse in the city of Rondonópolis”
Claim · model-written summary
Higher water soluble carbohydrate levels were observed when nitrogen was applied on the day of grass cutting (day 0).
Verbatim
e0“the grasses Brachiaria brizantha BRS Piatã and Panicum maximum BRS Quênia”
e3“The experiment was conducted in a greenhouse in the city of Rondonópolis”
e4“Higher levels of water soluble carbohydrates were observed when nitrogen fertilization was performed on grass cutting (day 0)”
Claim · model-written summary
Nitrogen fertilization of BRS Piatã palisadegrass close to the time of defoliation is recommended.
- Taxon
- Brachiaria brizanthaUrochloa brizanthae0
- Material
- BRS Piatãe5
- Outcome
- close the time of defoliatione5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Brachiaria brizantha BRS Piatã and Panicum maximum BRS Quênia”
e5“Nitrogen fertilization of the BRS Piatã palisadegrass close the time of defoliation is recommended”
Claim · model-written summary
For BRS Quênia guineagrass, nitrogen can be applied between the cutting day and the eighth day after defoliation.
- Taxon
- Panicum maximumMegathyrsus maximuse0
- Material
- Quênia guineagrasse6
- Outcome
- between the cutting day and the eighth day after defoliatione6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Brachiaria brizantha BRS Piatã and Panicum maximum BRS Quênia”
e6“For Quênia guineagrass, nitrogen can be applied between the cutting day and the eighth day after defoliation”
Claim · model-written summary
BRS Piatã palisadegrass has a higher root water soluble carbohydrate content than BRS Quênia guineagrass.
- Taxon
- Brachiaria brizanthaUrochloa brizanthae0
- Material
- BRS Piatãe7
- Organ / stage
- root systeme7
- Outcome
- water soluble carbohydratese7
- Direction
- highere7
- Setting
- greenhouse in the city of Rondonópolise3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Brachiaria brizantha BRS Piatã and Panicum maximum BRS Quênia”
e3“The experiment was conducted in a greenhouse in the city of Rondonópolis”
e7“For the root system, there is a higher content of water soluble carbohydrates in the BRS Piatã palisadegrass and greater accumulation of starch in the BRS Quênia guineagrass”
Claim · model-written summary
BRS Quênia guineagrass has greater root starch accumulation than BRS Piatã palisadegrass.
- Taxon
- Panicum maximumMegathyrsus maximuse0
- Material
- BRS Quêniae7
- Organ / stage
- root systeme7
- Outcome
- accumulation of starche7
- Direction
- greatere7
- Setting
- greenhouse in the city of Rondonópolise3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Brachiaria brizantha BRS Piatã and Panicum maximum BRS Quênia”
e3“The experiment was conducted in a greenhouse in the city of Rondonópolis”
e7“For the root system, there is a higher content of water soluble carbohydrates in the BRS Piatã palisadegrass and greater accumulation of starch in the BRS Quênia guineagrass”
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