Paper · 1978 · AgEcon Search (University of Minnesota, USA)

Post-Planting Weed Control Treatments for Maize in Suriname

Dumas, R.E.; Ausan, S.; Dumas, R.E.; et al.

3
claims
7
verbatim quotes
1
citations
3
research areas
✓
Open access

Abstract

Information is given on the crop and the weed control treatments tested. Control effectiveness of the selected treatments, i.e. alachlor, atrazine, cyanazine, methazole, paraquat, handhoeing, inter-row rotavating and spiral plowing are discussed. Except for cyanazine and paraquat, the experimental results are summarized with regard to seedling emergence, flowering, number of ears per plant, grain yield and N-content of the grains. Alachlor pre-em. had a depressive effect on seedling emergence, whereas a lower N content of the grains was recorded after preem. use of atrazine. The remaining effects of the weed control treatments on the crop were not statistically significant at the 5% level. The damage symptoms encountered are described. Eventually the labour requirements are given for hand-hoeing, inter-row rotavating, spiral plowing and spraying.

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 3

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Pre-emergence alachlor depressed maize seedling emergence.

Taxon
MaizeZea mayst0
Treatment
Alachlor pre-em.e0
Outcome
seedling emergencee0
Direction
depressivee0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Zea mays
Zea mays · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Alachlor pre-em. had a depressive effect on seedling emergence”

✓ located verbatim in the source · abstract, characters 435–497 · show in text ↑
t0

“Maize”

✓ located verbatim in the source · title, characters 42–47 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Pre-emergence atrazine lowered maize grain nitrogen content.

Taxon
MaizeZea mayst0
Treatment
preem. use of atrazinee0
Outcome
N content of the grainse0
Direction
lowere0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Zea mays
Zea mays · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“a lower N content of the grains was recorded after preem. use of atrazine”

✓ located verbatim in the source · abstract, characters 507–580 · show in text ↑
t0

“Maize”

✓ located verbatim in the source · title, characters 42–47 · show in text ↑
Intervention effectobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

Remaining weed control treatments had no statistically significant effects on the measured maize crop outcomes.

Taxon
MaizeZea mayst0
Treatment
weed control treatmentse0
Outcome
seedling emergence, flowering, number of ears per plant, grain yield and N-content of the grainse1
Value
5%e0

Not reportedComparatorDirection

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Zea mays
Zea mays · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“The remaining effects of the weed control treatments on the crop were not statistically significant at the 5% level.”

✓ located verbatim in the source · abstract, characters 582–698 · show in text ↑
e1

“seedling emergence, flowering, number of ears per plant, grain yield and N-content of the grains”

✓ located verbatim in the source · abstract, characters 337–433 · show in text ↑
t0

“Maize”

✓ located verbatim in the source · title, characters 42–47 · show in text ↑

alachlor · growth · Zea mays (maize)Positive and negative results

9 papers: 4 positive, 5 negative or no effect

4 papers in the same direction as this paper · 4 in the opposite direction

  1. positive
  2. positive
  3. positive

5 papers more in this group

See all 9 papers →

atrazine · nutrient: content · Zea mays (maize)Positive and negative results

18 papers: 12 positive, 6 negative or no effect

5 papers in the same direction as this paper · 12 in the opposite direction

  1. positive
  2. positive
  3. positive

14 papers more in this group

See all 18 papers →

herbicide · yield · Zea mays (maize)Positive and negative results

651 papers: 500 positive, 151 negative or no effect

150 papers in the same direction as this paper · 500 in the opposite direction

  1. positive
  2. positive
  3. positive

647 papers more in this group

See all 651 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.