Abstract
Abstract Reduced tillage has increased dramatically over the past several years and is expected to continue to increase in the future. Continuous no‐till may become a popular tillage system with growers to facilitate compliance with government programs to control soil erosion. The objective of this research was to evaluate the long‐term effects of four tillage systems and five fertilizer regimes on corn ( Zea mays L.) yield. A 20‐yr continuous‐corn tillage ✕ fertility study was conducted from 1970 to 1990 on an Ebbert silt loam (fine‐silty, mixed, mesic Argiaquic Argialbolls), an imperfectly drained soil at the Belleville Research Center, Belleville, IL. Starter fertilizer did not increase corn height within a tillage system. Height was greater in no‐till compared with conventional till (moldboard plow), reduced till (chisel plow), or alternate till (2 yr no‐till, 1 yr moldboard plow) with or without a starter fertilizer. There was no difference in population among tillage systems due to fertilizer treatment. Corn population was lower in no‐till compared with conventional till regardless of fertilizer treatment. Starter fertilizer did not increase yield in any tillage system. Corn yield averaged 5 to 7% lower in no‐till compared with conventional till or reduced till where a starter fertilizer was applied. There was no difference in yield among tillage systems when NPK was broadcast. Corn yield was equal in conventional till, alternate till, reduced till, and no‐till with fertilizer applied broadcast on an imperfectly drained soil. Continuous no‐till with an imperfectly drained soil does not reduce corn yield.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. 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 7
Claim · model-written summary
Starter fertilizer did not increase corn height.
- Taxon
- corn
Zea mays subsp. mayse0 - Treatment
- Starter fertilizere0
- Outcome
- corn heighte0
- Direction
- did not increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Starter fertilizer did not increase corn height within a tillage system”
Claim · model-written summary
No-till increased height relative to conventional, reduced and alternate tillage.
- Taxon
- CornZea mays subsp. mayst0
- Treatment
- no‐tille0
- Outcome
- Heighte0
- Direction
- greatere0
- Comparator
- conventional till (moldboard plow), reduced till (chisel plow), or alternate till (2 yr no‐till, 1 yr moldboard plow)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Height was greater in no‐till compared with conventional till (moldboard plow), reduced till (chisel plow), or alternate till (2 yr no‐till, 1 yr moldboard plow) with or without a starter fertilizer”
t0“Corn”
Claim · model-written summary
Fertilizer treatment did not change corn population among tillage systems.
- Taxon
- CornZea mays subsp. mayst0
- Treatment
- fertilizer treatmente0
- Outcome
- populatione0
- Direction
- no differencee0
- Comparator
- tillage systemse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There was no difference in population among tillage systems due to fertilizer treatment”
t0“Corn”
Claim · model-written summary
Corn population was lower in no-till than conventional tillage.
- Taxon
- CornZea mays subsp. mayse0
- Treatment
- no‐tille0
- Outcome
- Corn populatione0
- Direction
- lowere0
- Comparator
- conventional tille0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Corn population was lower in no‐till compared with conventional till regardless of fertilizer treatment”
Claim · model-written summary
Starter fertilizer did not increase yield.
- Taxon
- CornZea mays subsp. mayst0
- Treatment
- Starter fertilizere0
- Outcome
- yielde0
- Direction
- did not increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Starter fertilizer did not increase yield in any tillage system”
t0“Corn”
Claim · model-written summary
With starter fertilizer, no-till corn yield was 5 to 7% below conventional or reduced tillage.
- Taxon
- CornZea mays subsp. mayse0
- Treatment
- no‐tille0
- Outcome
- Corn yielde0
- Direction
- lowere0
- Value
- 5 to 7%e0
- Qualifier
- where a starter fertilizer was appliede0
- Comparator
- conventional till or reduced tille0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Corn yield averaged 5 to 7% lower in no‐till compared with conventional till or reduced till where a starter fertilizer was applied”
Claim · model-written summary
Broadcast NPK produced equal yields across tillage systems.
- Taxon
- CornZea mays subsp. mayst0
- Treatment
- NPK was broadcaste0
- Outcome
- yielde0
- Direction
- no differencee0
- Comparator
- tillage systemse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There was no difference in yield among tillage systems when NPK was broadcast”
t0“Corn”
The same questions in other papers
transplanting · yield · Zea mays (maize)Results differ
41 papers in the same direction as this paper · 88 reporting no difference from an alternative
- positive
- positive
- positive
126 papers more in this group
See all 130 papers →tillage · pest · Zea mays (maize)Positive and negative results
20 papers in the same direction as this paper · 28 in the opposite direction
- positive
- positive
- positive
45 papers more in this group
See all 49 papers →fertilization · pest · Zea mays (maize)Positive and negative results
21 papers in the same direction as this paper · 42 reporting no difference from an alternative
- positive
- positive
- positive
60 papers more in this group
See all 64 papers →tillage · growth · Zea mays (maize)Positive and negative results
195 papers in the same direction as this paper · 81 in the opposite direction · 6 reporting no difference from an alternative
- positive
- negative
- negative
279 papers more in this group
See all 283 papers →tillage · yield · Zea mays (maize)Positive and negative results
286 papers in the same direction as this paper · 812 in the opposite direction
- positive
- positive
- positive
1,095 papers more in this group
See all 1,099 papers →fertilization · growth · Zea mays (maize)Positive and negative results
168 papers in the same direction as this paper · 1,196 in the opposite direction
- positive
- positive
- positive
1,361 papers more in this group
See all 1,365 papers →fertilization · yield · Zea mays (maize)Positive and negative results
422 papers in the same direction as this paper · 3,485 in the opposite direction
- positive
- positive
- positive
3,904 papers more in this group
See all 3,908 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.