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 13
Claim · model-written summary
Black oat produced higher phytomass.
- 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 produced higher phytomass.
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 produced higher phytomass.
Verbatim
e0“Black oat, ryegrass and forage turnip presented higher phytomass production”
Claim · model-written summary
Cover crop species accumulated similar aerial-part nitrogen, 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
With black oat preceding maize, N up to 140 kg ha-1 produced higher yield and better N-use efficiency.
- Treatment
- N doses up to 140 kg ha-1e0
- Outcome
- higher yield and better agronomic efficiency of nitrogen usee0
- Direction
- highere0
- Qualifier
- black oate0
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
With ryegrass preceding maize, N up to 140 kg ha-1 produced higher yield and better N-use efficiency.
- Treatment
- N doses up to 140 kg ha-1e0
- Outcome
- higher yield and better agronomic efficiency of nitrogen usee0
- Direction
- highere0
- 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
With fallow preceding maize, N up to 140 kg ha-1 produced higher yield and better N-use efficiency.
- Treatment
- N doses up to 140 kg ha-1e0
- Outcome
- higher yield and better agronomic efficiency of nitrogen usee0
- Direction
- highere0
- 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 N application, preceding forage turnip gave higher maize grain protein.
- Treatment
- forage turnipe0
- Outcome
- total protein content in the graine0
- Direction
- highere0
- Qualifier
- Without application of nitrogen (0.0 kg ha1)e0
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”
t0“MAIZE”
Claim · model-written summary
Without N application, preceding vetch gave higher maize grain protein.
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”
t0“MAIZE”
Claim · model-written summary
Without N application, forage turnip preceded maize yield above 8,550 kg ha-1.
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 N application, vetch preceded maize yield above 8,550 kg ha-1.
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 N application, forage turnip preceded lower maize N-use efficiency.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“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 N application, vetch preceded lower maize N-use efficiency.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“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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2,181 papers more in this group
See all 2,185 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.