Paper · 1970 · Journal of Economic Entomology

Evaluation of Substitutes for DDT in Field Experiments for Control of the Bollworm and the Boll Weevil in Cotton: 1967-691234

A. R. Hopkins; H. M. Taft; W. James; et al.

12
claims
24
verbatim quotes
2
citations
2
research areas
—
Not open access

Abstract

Replicated field experiments of certain materials with and without DDT showed that methyl parathion, methyl parathion + DDT, toxaphene + methyl parathion, toxaphene + DDT, and azinphosmethyl + methyl parathion gave good control of the bollowrm, Heliothis zea (Boddie), and the boll weevil, Anthonomus grandis Boheman, when weather was favorable and insecticide applications were made at short intervals. However, when rainfall was excessive and applications could not be applied at short internals, methyl parathion, EPN (O-ethyl O-p- nitro-phenyl phenylphosphonothioate), EPN + methyl parathion, and toxaphene + methyl parathion at the rates tested failed to give good control. In 2 experiments in which the differences in yield were statistically significant, formulations containing toxaphene + DDT + methyl parathion and toxaphene + DDT produced the highest yields, indicating that under prevailing weather conditions and bollworm population pressures in the southeast, use of materials with less residual activity will result in poorer control and lower 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 12

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Methyl parathion gave good control of bollworm and boll weevil in favorable weather with short application intervals.

Treatment
methyl parathione0
Interactor
Heliothis zeaHelicoverpa zeae0pest
Second interactor
Anthonomus grandisAnthonomus grandise0pest
Outcome
good control of the bollowrme0
Direction
good controle0
Qualifier
weather was favorable and insecticide applications were made at short intervalse0

Not reportedComparator

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

Gossypium hirsutum
Gossypium hirsutum · TaxonChriKo · CC BY-SA 3.0 · Wikimedia Commons ↗
Helicoverpa zea
Helicoverpa zea · InteractorAndy Reago & Chrissy McClarren · CC BY 2.0 · Wikimedia Commons ↗
Anthonomus grandis
Anthonomus grandis · Second interactorAgricultural Research Service , United States Department of Agriculture . · Public domain · Wikimedia Commons ↗

Verbatim

e0

“methyl parathion, methyl parathion + DDT, toxaphene + methyl parathion, toxaphene + DDT, and azinphosmethyl + methyl parathion gave good control of the bollowrm, Heliothis zea (Boddie), and the boll weevil, Anthonomus grandis Boheman, when weather was favorable and insecticide applications were made at short intervals”

✓ located verbatim in the source · abstract, characters 83–402 · show in text ↑
t0

“Cotton”

✓ located verbatim in the source · title, characters 106–112 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Methyl parathion plus DDT gave good pest control in favorable weather.

Treatment
methyl parathion + DDTe0
Interactor
Heliothis zeaHelicoverpa zeae0pest
Outcome
good control of the bollowrme0
Direction
good controle0

Not reportedComparator

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

Gossypium hirsutum
Gossypium hirsutum · TaxonChriKo · CC BY-SA 3.0 · Wikimedia Commons ↗
Helicoverpa zea
Helicoverpa zea · InteractorAndy Reago & Chrissy McClarren · CC BY 2.0 · Wikimedia Commons ↗

Verbatim

e0

“methyl parathion + DDT, toxaphene + methyl parathion, toxaphene + DDT, and azinphosmethyl + methyl parathion gave good control of the bollowrm, Heliothis zea (Boddie), and the boll weevil, Anthonomus grandis Boheman, when weather was favorable and insecticide applications were made at short intervals”

✓ located verbatim in the source · abstract, characters 101–402 · show in text ↑
t0

“Cotton”

✓ located verbatim in the source · title, characters 106–112 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Toxaphene plus methyl parathion gave good pest control with short application intervals.

Treatment
toxaphene + methyl parathione0
Interactor
Heliothis zeaHelicoverpa zeae0pest
Outcome
good control of the bollowrme0
Direction
good controle0

Not reportedComparator

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

Gossypium hirsutum
Gossypium hirsutum · TaxonChriKo · CC BY-SA 3.0 · Wikimedia Commons ↗
Helicoverpa zea
Helicoverpa zea · InteractorAndy Reago & Chrissy McClarren · CC BY 2.0 · Wikimedia Commons ↗

Verbatim

e0

“toxaphene + methyl parathion, toxaphene + DDT, and azinphosmethyl + methyl parathion gave good control of the bollowrm, Heliothis zea (Boddie), and the boll weevil, Anthonomus grandis Boheman, when weather was favorable and insecticide applications were made at short intervals”

✓ located verbatim in the source · abstract, characters 125–402 · show in text ↑
t0

“Cotton”

✓ located verbatim in the source · title, characters 106–112 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Toxaphene plus DDT gave good pest control with short application intervals.

Treatment
toxaphene + DDTe0
Interactor
Heliothis zeaHelicoverpa zeae0pest
Outcome
good control of the bollowrme0
Direction
good controle0

Not reportedComparator

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

Gossypium hirsutum
Gossypium hirsutum · TaxonChriKo · CC BY-SA 3.0 · Wikimedia Commons ↗
Helicoverpa zea
Helicoverpa zea · InteractorAndy Reago & Chrissy McClarren · CC BY 2.0 · Wikimedia Commons ↗

Verbatim

e0

“toxaphene + DDT, and azinphosmethyl + methyl parathion gave good control of the bollowrm, Heliothis zea (Boddie), and the boll weevil, Anthonomus grandis Boheman”

✓ located verbatim in the source · abstract, characters 155–316 · show in text ↑
t0

“Cotton”

✓ located verbatim in the source · title, characters 106–112 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Azinphosmethyl plus methyl parathion gave good pest control.

Treatment
azinphosmethyl + methyl parathione0
Interactor
Heliothis zeaHelicoverpa zeae0pest
Outcome
good control of the bollowrme0
Direction
good controle0

Not reportedComparator

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

Gossypium hirsutum
Gossypium hirsutum · TaxonChriKo · CC BY-SA 3.0 · Wikimedia Commons ↗
Helicoverpa zea
Helicoverpa zea · InteractorAndy Reago & Chrissy McClarren · CC BY 2.0 · Wikimedia Commons ↗

Verbatim

e0

“azinphosmethyl + methyl parathion gave good control of the bollowrm, Heliothis zea (Boddie), and the boll weevil, Anthonomus grandis Boheman”

✓ located verbatim in the source · abstract, characters 176–316 · show in text ↑
t0

“Cotton”

✓ located verbatim in the source · title, characters 106–112 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Methyl parathion failed to give good control under excessive rainfall and longer application intervals.

Treatment
methyl parathione0
Outcome
good controle0
Direction
failed to give good controle0

Not reportedComparator

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

Gossypium hirsutum
Gossypium hirsutum · TaxonChriKo · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“methyl parathion, EPN (O-ethyl O-p- nitro-phenyl phenylphosphonothioate), EPN + methyl parathion, and toxaphene + methyl parathion at the rates tested failed to give good control”

✓ located verbatim in the source · abstract, characters 499–677 · show in text ↑
t0

“Cotton”

✓ located verbatim in the source · title, characters 106–112 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

EPN failed to give good control under excessive rainfall.

Treatment
EPNe0
Outcome
good controle0
Direction
failed to give good controle0

Not reportedComparator

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

Gossypium hirsutum
Gossypium hirsutum · TaxonChriKo · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“EPN (O-ethyl O-p- nitro-phenyl phenylphosphonothioate), EPN + methyl parathion, and toxaphene + methyl parathion at the rates tested failed to give good control”

✓ located verbatim in the source · abstract, characters 517–677 · show in text ↑
t0

“Cotton”

✓ located verbatim in the source · title, characters 106–112 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

EPN plus methyl parathion failed to give good control under excessive rainfall.

Treatment
EPN + methyl parathione0
Outcome
good controle0
Direction
failed to give good controle0

Not reportedComparator

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

Gossypium hirsutum
Gossypium hirsutum · TaxonChriKo · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“EPN + methyl parathion, and toxaphene + methyl parathion at the rates tested failed to give good control”

✓ located verbatim in the source · abstract, characters 573–677 · show in text ↑
t0

“Cotton”

✓ located verbatim in the source · title, characters 106–112 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Toxaphene plus methyl parathion failed to give good control under excessive rainfall.

Treatment
toxaphene + methyl parathione0
Outcome
good controle0
Direction
failed to give good controle0

Not reportedComparator

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

Gossypium hirsutum
Gossypium hirsutum · TaxonChriKo · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“toxaphene + methyl parathion at the rates tested failed to give good control”

✓ located verbatim in the source · abstract, characters 601–677 · show in text ↑
t0

“Cotton”

✓ located verbatim in the source · title, characters 106–112 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Toxaphene, DDT and methyl parathion formulation produced among the highest cotton yields.

Treatment
toxaphene + DDT + methyl parathione0
Outcome
yieldse0
Direction
higheste0

Not reportedComparator

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

Gossypium hirsutum
Gossypium hirsutum · TaxonChriKo · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“formulations containing toxaphene + DDT + methyl parathion and toxaphene + DDT produced the highest yields”

✓ located verbatim in the source · abstract, characters 762–868 · show in text ↑
t0

“Cotton”

✓ located verbatim in the source · title, characters 106–112 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Toxaphene and DDT formulation produced among the highest cotton yields.

Treatment
toxaphene + DDTe0
Outcome
yieldse0
Direction
higheste0

Not reportedComparator

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

Gossypium hirsutum
Gossypium hirsutum · TaxonChriKo · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“formulations containing toxaphene + DDT + methyl parathion and toxaphene + DDT produced the highest yields”

✓ located verbatim in the source · abstract, characters 762–868 · show in text ↑
t0

“Cotton”

✓ located verbatim in the source · title, characters 106–112 · show in text ↑
Recommendationauthor interpretationoriginal resultnegativebasis n/a

Claim · model-written summary

Materials with less residual activity were expected to give poorer control and lower yield under prevailing conditions.

Treatment
materials with less residual activitye0
Outcome
poorer control and lower yielde0

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

Gossypium hirsutum
Gossypium hirsutum · TaxonChriKo · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“use of materials with less residual activity will result in poorer control and lower yield”

✓ located verbatim in the source · abstract, characters 974–1064 · show in text ↑
t0

“Cotton”

✓ located verbatim in the source · title, characters 106–112 · show in text ↑

parathion-methyl · yield · Gossypium hirsutum (cotton)Results differ

4 papers: 2 positive, 2 negative or no effect

1 paper in the same direction as this paper · 2 in the opposite direction

  1. negative
  2. no effect
  3. positive
See all 4 papers →

azinphos-methyl · Helicoverpa zea · Gossypium hirsutum (cotton)Positive and negative results

2 papers: 1 positive, 1 negative or no effect

1 in the opposite direction

  1. negative
See all 2 papers →

parathion-methyl · control · Gossypium hirsutum (cotton)Positive and negative results

3 papers: 2 positive, 1 negative or no effect

2 in the opposite direction

  1. positive
  2. positive
See all 3 papers →

toxaphene · control · Gossypium hirsutum (cotton)Positive and negative results

3 papers: 2 positive, 1 negative or no effect

2 in the opposite direction

  1. positive
  2. positive
See all 3 papers →

toxaphene · yield · Gossypium hirsutum (cotton)Results agree

2 papers: 2 positive, 0 negative or no effect

1 paper in the same direction as this paper

  1. positive
See all 2 papers →

parathion-methyl · Helicoverpa zea · Gossypium hirsutum (cotton)Results agree

3 papers: 3 positive, 0 negative or no effect

2 papers in the same direction as this paper

  1. positive
  2. positive
See all 3 papers →

toxaphene · Helicoverpa zea · Gossypium hirsutum (cotton)Results agree

4 papers: 4 positive, 0 negative or no effect

3 papers in the same direction as this paper

  1. positive
  2. positive
  3. positive
See all 4 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.