Abstract
This work was carried out during the 2008/2009 crop season, in an Oxisol. It was used a split-plot arrangement design, with each plot corresponding to a different soil preparation system and each split-plot corresponding to a different sowing time of the forage Brachiaria brizantha Stapf. The soil preparation systems were: heavy harrowing (HH), disk plough (DP), chisel plough (CP) and no-till (NT), and the forage sowing times were: 0, 8, 16 and 25 days after sowing (DAS) of corn, arranged in 16 treatments with 3 replicates. The productive and vegetative characteristics of the corn were evaluated. Soil preparations have influenced plant height and the first ear height, with the highest value found for the heavy harrow treatment. Forage sowing time had no influence on vegetative characteristics of the corn and productive characteristics were not influenced by the soil preparations. The forage sowing time had influence on corn productivity, causing decrease in competition with corn forage from 5 DAS. The productivity was highly correlated with the number of grains per ear. Este trabalho foi desenvolvido, na safra 2008/2009, em Latossolo Vermelho-Amarelo, distrófico. Foi utilizado delineamento em parcelas subdivididas, em que cada parcela correspondeu a diferentes sistemas de preparo do solo e as subparcelas corresponderam a diferentes épocas de semeadura da forrageira Brachiaria brizantha Stapf. Os sistemas de preparo do solo foram os seguintes: grade aradora (GA), arado de discos (AD), cultivo mínimo (CM) e semeadura direta (SD); as épocas de semeadura da forrageira foram feitas a 0, 8, 16 e 25 dias após a semeadura do milho (DAS), totalizando 16 tratamentos, com três repetições. Avaliaram-se as características vegetativas e produtivas da cultura do milho. Os preparos de solo influenciaram a altura de plantas e de inserção da primeira espiga, sendo os maiores valores observados no tratamento com grade aradora; a época de semeadura da forrageira não teve influência sobre as características vegetativas; os diferentes preparos do solo não influenciaram as características produtivas. A época de semeadura da forrageira teve influência somente sobre a produtividade do milho, provocando diminuição da competição entre a forrageira e o milho a partir de cinco DAS. A produtividade foi altamente correlacionada com o número de grãos por espiga.
Abstract from the paper’s OpenAlex record; open copy licensed cc-by-sa. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 6
Claim · model-written summary
Heavy harrowing produced the highest corn plant height.
- Taxon
- corn
Zea mays subsp. mayst0 - Treatment
- heavy harrow treatmente0
- Outcome
- plant heighte0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soil preparations have influenced plant height and the first ear height, with the highest value found for the heavy harrow treatment”
t0“corn culture”
Claim · model-written summary
Heavy harrowing produced the highest first ear height.
- Taxon
- cornZea mays subsp. mayst0
- Treatment
- heavy harrow treatmente0
- Outcome
- first ear heighte0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soil preparations have influenced plant height and the first ear height, with the highest value found for the heavy harrow treatment”
t0“corn culture”
Claim · model-written summary
Forage sowing time did not affect corn vegetative characteristics.
- Taxon
- cornZea mays subsp. mayse0
- Treatment
- Forage sowing timee0
- Interactor
- Foragee0weed
- Outcome
- vegetative characteristicse0
- Direction
- no influencee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Forage sowing time had no influence on vegetative characteristics of the corn”
Claim · model-written summary
Soil preparation did not affect corn productive characteristics.
- Taxon
- cornZea mays subsp. mayst0
- Treatment
- soil preparationse0
- Outcome
- productive characteristicse0
- Direction
- not influencede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“productive characteristics were not influenced by the soil preparations”
t0“corn culture”
Claim · model-written summary
Forage sowing time affected corn productivity and reduced forage competition from five days after sowing.
- Taxon
- cornZea mays subsp. mayse0
- Treatment
- forage sowing timee0
- Interactor
- foragee0weed
- Outcome
- competition with corn foragee0
- Direction
- decreasee0
- Qualifier
- from 5 DASe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The forage sowing time had influence on corn productivity, causing decrease in competition with corn forage from 5 DAS”
Claim · model-written summary
Corn productivity was highly correlated with grain number per ear.
- Taxon
- cornZea mays subsp. mayst0
- Outcome
- productivitye0
- Comparator
- number of grains per eare0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The productivity was highly correlated with the number of grains per ear”
t0“corn culture”
The same questions in other papers
sowing time · organism · Zea mays (maize)Positive and negative results
2 papers in the same direction as this paper · 3 in the opposite direction
- negative
- no effect
- no effect
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.