Paper · 2012 · Semina Ciências Agrárias

Doses and sources of nitrogen fertilizer and their effects on soil chemical properties and forage yield of Brachiaria brizantha cv. Xaraés

Reges Heinrichs; Cecilio V Soares Filho; Carlos Alberto Crociolli; et al.

8
claims
14
verbatim quotes
6
citations
2
research areas
✓
Open access · cc-by-nc

Abstract

As forrageiras, entre as quais se destaca o gênero Brachiaria, constituem a principal fonte de nutrientes para os bovinos e às vezes, o único alimento oferecido. A concentração de elementos na planta está relacionada com o solo, a adubação, o clima, a época, a variedade e as práticas culturais. Com o objetivo de avaliar os efeitos de doses e fontes nitrogenadas sobre os atributos químicos do solo e a produção de massa seca do capim Brachiaria brizantha cv. Xaraés realizou-se um experimento em solo classificado como Latossolo Vermelho Amarelo distrófico, em Araçatuba, São Paulo. Utilizou-se o delineamento experimental em blocos casualizados com 3 repetições em esquema fatorial 3 x 3, sendo três doses de nitrogênio (100, 200 e 400 kg ha-1 ano-1) e três fontes (ajifer® L40, sulfato de amônio, uréia), acrescido do tratamento controle com dose 0 (zero) de N. Os maiores efeitos nos atributos químicos do solo em função da adubação nitrogenada no capim Xaraés foram observados na camada superficial do solo; as fontes nitrogenadas ajifer® L40 e sulfato de amônio apresentaram comportamento semelhante, com aumento no teor de enxofre e redução do pH do solo na camada mais superficial frente à fonte uréia; a utilização dos fertilizantes ajifer® L40, sulfato de amônio e uréia não afetou o teor de micronutrientes, exceto o teor de Fe e Mn, e não alterou a concentração de sódio e a condutividade elétrica no solo; a produção de matéria seca do capim Xaraés foi semelhante para as três fontes nitrogenadas.

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Claims 8

Observationobservedoriginal resultmeasured

Claim · model-written summary

Nitrogen fertilization had its largest soil chemical effects in the surface layer.

Taxon
capim Xaraése0
Outcome
efeitos nos atributos químicos do soloe0
Direction
maiorese0
Qualifier
camada superficial do soloe0

Verbatim

e0

“Os maiores efeitos nos atributos químicos do solo em função da adubação nitrogenada no capim Xaraés foram observados na camada superficial do solo”

✓ located verbatim in the source · abstract, characters 866–1012 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Ajifer L40 increased surface soil sulfur relative to urea.

Taxon
Brachiaria brizantha cv. XaraésUrochloa brizanthae0t0
Treatment
ajifer® L40e0
Outcome
teor de enxofree0
Direction
aumentoe0
Comparator
uréiae0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Urochloa brizantha
Urochloa brizantha · Taxonhttp://www.hear.org/starr/imageusepolicy.htm This file is licensed under the Creative Commons Attribution 3.0 Unported license. Attribution: Forest & Kim Starr · CC BY 3.0 · Wikimedia Commons ↗

Verbatim

e0

“as fontes nitrogenadas ajifer® L40 e sulfato de amônio apresentaram comportamento semelhante, com aumento no teor de enxofre e redução do pH do solo na camada mais superficial frente à fonte uréia”

✓ located verbatim in the source · abstract, characters 1014–1210 · show in text ↑
t0

“Doses and sources of nitrogen fertilizer and their effects on soil chemical properties and forage yield of Brachiaria brizantha cv. Xaraés”

✓ located verbatim in the source · title, characters 0–138 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Ammonium sulfate increased surface soil sulfur relative to urea.

Taxon
Brachiaria brizantha cv. XaraésUrochloa brizanthae0t0
Treatment
sulfato de amônioe0
Outcome
teor de enxofree0
Direction
aumentoe0
Comparator
uréiae0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Urochloa brizantha
Urochloa brizantha · Taxonhttp://www.hear.org/starr/imageusepolicy.htm This file is licensed under the Creative Commons Attribution 3.0 Unported license. Attribution: Forest & Kim Starr · CC BY 3.0 · Wikimedia Commons ↗

Verbatim

e0

“as fontes nitrogenadas ajifer® L40 e sulfato de amônio apresentaram comportamento semelhante, com aumento no teor de enxofre e redução do pH do solo na camada mais superficial frente à fonte uréia”

✓ located verbatim in the source · abstract, characters 1014–1210 · show in text ↑
t0

“Doses and sources of nitrogen fertilizer and their effects on soil chemical properties and forage yield of Brachiaria brizantha cv. Xaraés”

✓ located verbatim in the source · title, characters 0–138 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Ajifer L40 reduced surface soil pH relative to urea.

Taxon
Brachiaria brizantha cv. XaraésUrochloa brizanthae0t0
Treatment
ajifer® L40e0
Outcome
pH do soloe0
Direction
reduçãoe0
Comparator
uréiae0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Urochloa brizantha
Urochloa brizantha · Taxonhttp://www.hear.org/starr/imageusepolicy.htm This file is licensed under the Creative Commons Attribution 3.0 Unported license. Attribution: Forest & Kim Starr · CC BY 3.0 · Wikimedia Commons ↗

Verbatim

e0

“as fontes nitrogenadas ajifer® L40 e sulfato de amônio apresentaram comportamento semelhante, com aumento no teor de enxofre e redução do pH do solo na camada mais superficial frente à fonte uréia”

✓ located verbatim in the source · abstract, characters 1014–1210 · show in text ↑
t0

“Doses and sources of nitrogen fertilizer and their effects on soil chemical properties and forage yield of Brachiaria brizantha cv. Xaraés”

✓ located verbatim in the source · title, characters 0–138 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Ammonium sulfate reduced surface soil pH relative to urea.

Taxon
Brachiaria brizantha cv. XaraésUrochloa brizanthae0t0
Treatment
sulfato de amônioe0
Outcome
pH do soloe0
Direction
reduçãoe0
Comparator
uréiae0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Urochloa brizantha
Urochloa brizantha · Taxonhttp://www.hear.org/starr/imageusepolicy.htm This file is licensed under the Creative Commons Attribution 3.0 Unported license. Attribution: Forest & Kim Starr · CC BY 3.0 · Wikimedia Commons ↗

Verbatim

e0

“as fontes nitrogenadas ajifer® L40 e sulfato de amônio apresentaram comportamento semelhante, com aumento no teor de enxofre e redução do pH do solo na camada mais superficial frente à fonte uréia”

✓ located verbatim in the source · abstract, characters 1014–1210 · show in text ↑
t0

“Doses and sources of nitrogen fertilizer and their effects on soil chemical properties and forage yield of Brachiaria brizantha cv. Xaraés”

✓ located verbatim in the source · title, characters 0–138 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

The three nitrogen fertilizers did not alter most soil micronutrients.

Taxon
Brachiaria brizantha cv. XaraésUrochloa brizanthae0t0
Treatment
fertilizantes ajifer® L40, sulfato de amônio e uréiae0
Outcome
teor de micronutrientese0
Direction
não afetoue0
Qualifier
exceto o teor de Fe e Mne0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Urochloa brizantha
Urochloa brizantha · Taxonhttp://www.hear.org/starr/imageusepolicy.htm This file is licensed under the Creative Commons Attribution 3.0 Unported license. Attribution: Forest & Kim Starr · CC BY 3.0 · Wikimedia Commons ↗

Verbatim

e0

“a utilização dos fertilizantes ajifer® L40, sulfato de amônio e uréia não afetou o teor de micronutrientes, exceto o teor de Fe e Mn”

✓ located verbatim in the source · abstract, characters 1212–1344 · show in text ↑
t0

“Doses and sources of nitrogen fertilizer and their effects on soil chemical properties and forage yield of Brachiaria brizantha cv. Xaraés”

✓ located verbatim in the source · title, characters 0–138 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

The three fertilizers did not change soil sodium concentration or electrical conductivity.

Taxon
Brachiaria brizantha cv. XaraésUrochloa brizanthae0t0
Treatment
fertilizantes ajifer® L40, sulfato de amônio e uréiae0
Outcome
concentração de sódio e a condutividade elétrica no soloe0
Direction
não alteroue0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Urochloa brizantha
Urochloa brizantha · Taxonhttp://www.hear.org/starr/imageusepolicy.htm This file is licensed under the Creative Commons Attribution 3.0 Unported license. Attribution: Forest & Kim Starr · CC BY 3.0 · Wikimedia Commons ↗

Verbatim

e0

“a utilização dos fertilizantes ajifer® L40, sulfato de amônio e uréia não afetou o teor de micronutrientes, exceto o teor de Fe e Mn, e não alterou a concentração de sódio e a condutividade elétrica no solo”

✓ located verbatim in the source · abstract, characters 1212–1418 · show in text ↑
t0

“Doses and sources of nitrogen fertilizer and their effects on soil chemical properties and forage yield of Brachiaria brizantha cv. Xaraés”

✓ located verbatim in the source · title, characters 0–138 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Brachiaria forage dry matter production was similar under the three nitrogen sources.

Taxon
capim Xaraése0
Treatment
três fontes nitrogenadase0
Outcome
produção de matéria secae0
Direction
semelhantee0
Comparator
três fontes nitrogenadase0

Verbatim

e0

“a produção de matéria seca do capim Xaraés foi semelhante para as três fontes nitrogenadas.”

✓ located verbatim in the source · abstract, characters 1420–1511 · show in text ↑

fertilization · molecular: metabolites · Urochloa brizantha (palisade grass)Positive and negative results

6 papers: 3 positive, 3 negative or no effect

2 papers in the same direction as this paper · 3 in the opposite direction

  1. positive
  2. positive
  3. positive

2 papers more in this group

See all 6 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.