Abstract
Abstract High costs of labor, fuel, and machinery; need to conserve moisture; loss of soil from erosion; and desire to double crop are some of the factors considered in the trend towards no‐tillage methods of planting crops. No‐tillage planting of corn in Pensacola bahiagrass ( Paspalum notatum Flugge) sod and small grains such as rye ( Secale cereale L.) was compared to conventional planting “rotavating, disking, and planting” for 3 years on Lakeland fine sand (Typic Quartzipsamment). When Pensacola bahiagrass was treated with paraquat + residual herbicide before planting corn by the notillage method, it recovered quickly and competed with the corn for water and nutrients. Corn ( Zea mays L.) planted no‐tillage had lower yields than when conventionally planted, but after corn harvest the bahiagrass growth was adequate for grazing. Adding extra N to the no‐tillage corn increased yields of both corn and grass. Corn under no‐tillage in rye treated with paraquat + residual herbicides generally yielded about the same as conventionally planted corn. Pensacola bahiagrass when treated with glyphosate in combination with other herbicide was almost all killed and offered little competition to the corn. Forage yield in the fall was only 37% of yield after paraquat‐residual herbicide application. The effectiveness in controlling broadleaf weeds with atrazine, cyanazine, alachor, linuron, and combinations of these herbicides varied seasonally, but had no significant effect on corn yields. Weed growth at corn harvest was considerably less on the no‐tillage plots; however, after 3 years of continuous no‐tillage corn perennial weeds were beginning to appear while few perennial weeds were observed in the conventionally planted corn.
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 10
Claim · model-written summary
No-tillage corn had lower yields than conventionally planted corn.
- Taxon
- Corn
Zea mays subsp. mayse1 - Treatment
- no‐tillagee1
- Outcome
- yieldse1
- Direction
- lowere1
- Comparator
- conventionally plantede1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Corn ( Zea mays L.) planted no‐tillage had lower yields than when conventionally planted”
Claim · model-written summary
Adding extra N to no-tillage corn increased yields of both corn and bahiagrass.
- Taxon
- cornZea mays subsp. mayse2
- Treatment
- extra Ne2
- Outcome
- yields of both corn and grasse2
- Direction
- increasede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“Adding extra N to the no‐tillage corn increased yields of both corn and grass”
Claim · model-written summary
No-tillage corn in rye treated with paraquat plus residual herbicides generally yielded about the same as conventionally planted corn.
- Taxon
- CornZea mays subsp. mayse3
- Treatment
- paraquat + residual herbicidese3
- Outcome
- yielde3
- Direction
- about the samee3
- Comparator
- conventionally planted corne3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“Corn under no‐tillage in rye treated with paraquat + residual herbicides generally yielded about the same as conventionally planted corn”
Claim · model-written summary
Pensacola bahiagrass recovered quickly after paraquat plus residual herbicide and competed with corn for water and nutrients.
- Taxon
- cornZea mays subsp. mayse4
- Interactor
- Pensacola bahiagrasse0weed
- Outcome
- competed with the corn for water and nutrientse4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“corn in Pensacola bahiagrass ( Paspalum notatum Flugge) sod”
e4“it recovered quickly and competed with the corn for water and nutrients”
Claim · model-written summary
Pensacola bahiagrass treated with glyphosate in combination with other herbicide was almost all killed and offered little competition to corn.
- Taxon
- cornZea mays subsp. mayse5
- Treatment
- glyphosate in combination with other herbicidee5
- Interactor
- Pensacola bahiagrasse5weed
- Outcome
- almost all killede5
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“Pensacola bahiagrass when treated with glyphosate in combination with other herbicide was almost all killed and offered little competition to the corn”
Claim · model-written summary
Fall forage yield of Pensacola bahiagrass was only 37% of its yield after paraquat-residual herbicide application.
Verbatim
e0“corn in Pensacola bahiagrass ( Paspalum notatum Flugge) sod”
e6“Forage yield in the fall was only 37% of yield after paraquat‐residual herbicide application”
Claim · model-written summary
The effectiveness of atrazine, cyanazine, alachor, linuron and their combinations in controlling broadleaf weeds varied seasonally.
- Taxon
- cornZea mays subsp. mayse0
- Treatment
- atrazine, cyanazine, alachor, linurone7
- Interactor
- broadleaf weedse7weed
- Outcome
- effectiveness in controlling broadleaf weedse7
- Direction
- varied seasonallye7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“The effectiveness in controlling broadleaf weeds with atrazine, cyanazine, alachor, linuron, and combinations of these herbicides varied seasonally”
e0“but had no significant effect on corn yields”
Claim · model-written summary
Atrazine, cyanazine, alachor, linuron and their combinations had no significant effect on corn yields.
- Taxon
- cornZea mays subsp. mayse0
- Treatment
- atrazine, cyanazine, alachor, linurone7
- Outcome
- corn yieldse0
- Direction
- no significant effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“The effectiveness in controlling broadleaf weeds with atrazine, cyanazine, alachor, linuron, and combinations of these herbicides varied seasonally”
e0“but had no significant effect on corn yields”
Claim · model-written summary
Weed growth at corn harvest was considerably less on no-tillage plots.
- Taxon
- cornZea mays subsp. mayse1
- Treatment
- no‐tillagee1
- Outcome
- Weed growthe1
- Direction
- lesse1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Weed growth at corn harvest was considerably less on the no‐tillage plots”
Claim · model-written summary
Perennial weeds began to appear after three years of continuous no-tillage corn, while few were observed in conventionally planted corn.
- Taxon
- cornZea mays subsp. mayse2
- Treatment
- continuous no‐tillage corne2
- Interactor
- perennial weedse2weed
- Outcome
- perennial weedse2
- Direction
- beginning to appeare2
- Comparator
- conventionally planted corne2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“after 3 years of continuous no‐tillage corn perennial weeds were beginning to appear while few perennial weeds were observed in the conventionally planted corn”
The same questions in other papers
paraquat · yield · Zea mays (maize)Results differ
7 papers in the same direction as this paper · 8 reporting no difference from an alternative
- positive
- positive
- positive
12 papers more in this group
See all 16 papers →atrazine · yield · Zea mays (maize)Results differ
34 papers in the same direction as this paper · 205 in the opposite direction
- positive
- positive
- positive
236 papers more in this group
See all 240 papers →cyanazine · yield · Zea mays (maize)Positive and negative results
2 papers in the same direction as this paper · 5 in the opposite direction
- positive
- positive
- positive
4 papers more in this group
See all 8 papers →Zea mays subsp. mays · weed · Zea mays (maize)Positive and negative results
9 papers in the same direction as this paper · 24 in the opposite direction
- positive
- positive
- positive
30 papers more in this group
See all 34 papers →linuron · yield · Zea mays (maize)Results agree
1 paper in the same direction as this paper
- no effect
tillage · weed · Zea mays (maize)Positive and negative results
64 papers in the same direction as this paper · 41 in the opposite direction · 5 reporting no difference from an alternative
- no effect
- negative
- negative
107 papers more in this group
See all 111 papers →herbicide · yield · Zea mays (maize)Positive and negative results
150 papers in the same direction as this paper · 500 reporting no difference from an alternative
- positive
- positive
- positive
647 papers more in this group
See all 651 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 →8 of 9 groups shown: named compounds and organisms first, then groups whose results differ (checked claim by claim), then those with positive and negative results, then the smaller groups.
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.