Abstract
Cover crops can contribute differently to the supply of nitrogen to crops. The objective was to evaluate the response of maize to nitrogen doses (0, 70, 140, 210 and 280 kg ha-1) when grown in succession to cover crops (vetch, forage turnip, black oat, ryegrass and fallow). The randomized block experimental design was used, with subdivided plots and four replications. Cover crops were allocated into plots, and N doses into sub-plots. As to cover crops, the aspects evaluated were phytomass production, N content and total accumulated; with regard to maize, the aspects evaluated were SPAD (Soil Plant Analysis evelopment) index, leaf N content, total grain protein, yield and agronomic efficiency of N. Black oat, ryegrass and forage turnip presented higher phytomass production. All species had similar results as to the total N accumulated in the aerial part (average value of 91.06 kg ha-1). In succession to black oat, ryegrass and fallow period, N doses up to 140 kg ha-1 applied in maize result in higher yield and better agronomic efficiency of nitrogen use. Without application of nitrogen (0.0 kg ha1), forage turnip and vetch provided higher total protein content in the grain, yield over 8,550 kg ha-1, and less agronomic efficiency of nitrogen use.
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Claims 16
Claim · model-written summary
Black oat had higher phytomass production among cover crops.
- Taxon
- Black oat
Avena strigosae0 - Outcome
- phytomass productione0
- Direction
- highere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Black oat, ryegrass and forage turnip presented higher phytomass production.”
Claim · model-written summary
Ryegrass had higher phytomass production among cover crops.
LoliumOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Black oat, ryegrass and forage turnip presented higher phytomass production.”
Claim · model-written summary
Forage turnip had higher phytomass production among cover crops.
Verbatim
e0“Black oat, ryegrass and forage turnip presented higher phytomass production.”
Claim · model-written summary
Cover crop species had similar total nitrogen accumulation in aerial parts, averaging 91.06 kg ha-1.
Verbatim
e0“All species had similar results as to the total N accumulated in the aerial part (average value of 91.06 kg ha-1).”
t0“COVER CROPS”
Claim · model-written summary
Nitrogen doses up to 140 kg ha-1 gave higher maize yield after black oat succession.
Zea maysNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In succession to black oat, ryegrass and fallow period, N doses up to 140 kg ha-1 applied in maize result in higher yield and better agronomic efficiency of nitrogen use.”
Claim · model-written summary
Nitrogen doses up to 140 kg ha-1 gave higher maize yield after ryegrass succession.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In succession to black oat, ryegrass and fallow period, N doses up to 140 kg ha-1 applied in maize result in higher yield and better agronomic efficiency of nitrogen use.”
Claim · model-written summary
Nitrogen doses up to 140 kg ha-1 gave higher maize yield after fallow.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In succession to black oat, ryegrass and fallow period, N doses up to 140 kg ha-1 applied in maize result in higher yield and better agronomic efficiency of nitrogen use.”
Claim · model-written summary
Nitrogen doses up to 140 kg ha-1 improved agronomic nitrogen use efficiency after black oat succession.
- Treatment
- N doses up to 140 kg ha-1e0
- Outcome
- agronomic efficiency of nitrogen usee0
- Direction
- bettere0
- Qualifier
- black oate0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In succession to black oat, ryegrass and fallow period, N doses up to 140 kg ha-1 applied in maize result in higher yield and better agronomic efficiency of nitrogen use.”
Claim · model-written summary
Nitrogen doses up to 140 kg ha-1 improved agronomic nitrogen use efficiency after ryegrass succession.
- Treatment
- N doses up to 140 kg ha-1e0
- Outcome
- agronomic efficiency of nitrogen usee0
- Direction
- bettere0
- Qualifier
- ryegrasse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In succession to black oat, ryegrass and fallow period, N doses up to 140 kg ha-1 applied in maize result in higher yield and better agronomic efficiency of nitrogen use.”
Claim · model-written summary
Nitrogen doses up to 140 kg ha-1 improved agronomic nitrogen use efficiency after fallow.
- Treatment
- N doses up to 140 kg ha-1e0
- Outcome
- agronomic efficiency of nitrogen usee0
- Direction
- bettere0
- Qualifier
- fallow periode0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In succession to black oat, ryegrass and fallow period, N doses up to 140 kg ha-1 applied in maize result in higher yield and better agronomic efficiency of nitrogen use.”
Claim · model-written summary
Without nitrogen application, forage turnip succession gave higher maize grain protein.
- Treatment
- forage turnipe0
- Outcome
- total protein content in the graine0
- Direction
- highere0
- Qualifier
- Without application of nitrogene0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Without application of nitrogen (0.0 kg ha1), forage turnip and vetch provided higher total protein content in the grain, yield over 8,550 kg ha-1, and less agronomic efficiency of nitrogen use.”
t0“MAIZE”
Claim · model-written summary
Without nitrogen application, vetch succession gave higher maize grain protein.
- Treatment
- vetche0
- Outcome
- total protein content in the graine0
- Direction
- highere0
- Qualifier
- Without application of nitrogene0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Without application of nitrogen (0.0 kg ha1), forage turnip and vetch provided higher total protein content in the grain, yield over 8,550 kg ha-1, and less agronomic efficiency of nitrogen use.”
t0“MAIZE”
Claim · model-written summary
Without nitrogen application, forage turnip succession gave maize yield over 8,550 kg ha-1.
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Without application of nitrogen (0.0 kg ha1), forage turnip and vetch provided higher total protein content in the grain, yield over 8,550 kg ha-1, and less agronomic efficiency of nitrogen use.”
t0“MAIZE”
Claim · model-written summary
Without nitrogen application, vetch succession gave maize yield over 8,550 kg ha-1.
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Without application of nitrogen (0.0 kg ha1), forage turnip and vetch provided higher total protein content in the grain, yield over 8,550 kg ha-1, and less agronomic efficiency of nitrogen use.”
t0“MAIZE”
Claim · model-written summary
Without nitrogen application, forage turnip succession gave less agronomic nitrogen use efficiency.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Without application of nitrogen (0.0 kg ha1), forage turnip and vetch provided higher total protein content in the grain, yield over 8,550 kg ha-1, and less agronomic efficiency of nitrogen use.”
t0“MAIZE”
Claim · model-written summary
Without nitrogen application, vetch succession gave less agronomic nitrogen use efficiency.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Without application of nitrogen (0.0 kg ha1), forage turnip and vetch provided higher total protein content in the grain, yield over 8,550 kg ha-1, and less agronomic efficiency of nitrogen use.”
t0“MAIZE”
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