Paper · 1994 · Weed Technology

Weed Control with Starch-Encapsulated Alachlor, Metolachlor, and Atrazine

Douglas D. Buhler; Marvin M. Schreiber; William C. Koskinen

9
claims
18
verbatim quotes
13
citations
2
research areas
—
Not open access

Abstract

Field research was conducted at Rosemount, MN in 1990 and 1991 to determine the effect of starch encapsulation on weed control in corn with alachlor, metolachlor, and atrazine under two weed densities. At low weed densities (122 total plants/m 2 ), giant foxtail and Pennsylvania smartweed control were not different with full rates of herbicide applied in starch encapsulated or commercial formulations. Velvetleaf control was less with starch-encapsulated than commercial formulations regardless of velvetleaf density. At high giant foxtail densities (740 plants/m 2 ), control was not affected by formulation with full rates of alachlor plus atrazine. However, giant foxtail control was less with starch-encapsulated formulations than commercial formulations with 75% rates of alachlor plus atrazine and both 75 and 100% rates of metolachlor plus atrazine. At low weed densities, corn yield was not different with any treatment, except starch-encapsulated metolachlor plus atrazine at 75% rates, compared to the weed-free control. Alachlor plus atrazine at full rates was the only starch-encapsulated treatment to result in corn yield not different from the weed-free control at high weed densities. Conversely, all commercial formulation treatments resulted in corn yields not different from the weed-free control at high weed densities.

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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 9

Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

At low weed densities, giant foxtail and Pennsylvania smartweed control did not differ between full-rate starch-encapsulated and commercial herbicide formulations.

Treatment
full rates of herbicide applied in starch encapsulatede1
Interactor
giant foxtaile1weed
Second interactor
Pennsylvania smartweede1weed
Outcome
giant foxtail and Pennsylvania smartweed controle1
Direction
not differente1
Comparator
commercial formulationse1
Setting
Rosemount, MNe0

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

Zea mays subsp. mays
Zea mays subsp. mays · TaxonDominicus Johannes Bergsma · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Field research was conducted at Rosemount, MN in 1990 and 1991 to determine the effect of starch encapsulation on weed control in corn with alachlor, metolachlor, and atrazine under two weed densities”

✓ located verbatim in the source · abstract, characters 0–200 · show in text ↑
e1

“At low weed densities (122 total plants/m 2 ), giant foxtail and Pennsylvania smartweed control were not different with full rates of herbicide applied in starch encapsulated or commercial formulations”

✓ located verbatim in the source · abstract, characters 202–403 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Velvetleaf control was lower with starch-encapsulated than with commercial herbicide formulations, regardless of velvetleaf density.

Treatment
starch-encapsulatede2
Interactor
VelvetleafAbutilon theophrastie2weed
Outcome
Velvetleaf controle2
Direction
lesse2
Qualifier
regardless of velvetleaf densitye2
Comparator
commercial formulationse2

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

Zea mays subsp. mays
Zea mays subsp. mays · TaxonDominicus Johannes Bergsma · CC BY-SA 4.0 · Wikimedia Commons ↗
Abutilon theophrasti
Abutilon theophrasti · InteractorI.Sáček, senior · Public domain · Wikimedia Commons ↗

Verbatim

e0

“Field research was conducted at Rosemount, MN in 1990 and 1991 to determine the effect of starch encapsulation on weed control in corn with alachlor, metolachlor, and atrazine under two weed densities”

✓ located verbatim in the source · abstract, characters 0–200 · show in text ↑
e2

“Velvetleaf control was less with starch-encapsulated than commercial formulations regardless of velvetleaf density”

✓ located verbatim in the source · abstract, characters 405–519 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

At high giant foxtail densities, control was not affected by formulation with full rates of alachlor plus atrazine.

Treatment
full rates of alachlor plus atrazinee3
Interactor
giant foxtaile3weed
Outcome
controle3
Direction
not affectede3

Not reportedComparator

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

Zea mays subsp. mays
Zea mays subsp. mays · TaxonDominicus Johannes Bergsma · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Field research was conducted at Rosemount, MN in 1990 and 1991 to determine the effect of starch encapsulation on weed control in corn with alachlor, metolachlor, and atrazine under two weed densities”

✓ located verbatim in the source · abstract, characters 0–200 · show in text ↑
e3

“At high giant foxtail densities (740 plants/m 2 ), control was not affected by formulation with full rates of alachlor plus atrazine”

✓ located verbatim in the source · abstract, characters 521–653 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

At 75% rates of alachlor plus atrazine, giant foxtail control was lower with starch-encapsulated than with commercial formulations.

Treatment
75% rates of alachlor plus atrazinee4
Interactor
giant foxtaile4weed
Outcome
giant foxtail controle4
Direction
lesse4
Comparator
commercial formulationse4

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

Zea mays subsp. mays
Zea mays subsp. mays · TaxonDominicus Johannes Bergsma · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Field research was conducted at Rosemount, MN in 1990 and 1991 to determine the effect of starch encapsulation on weed control in corn with alachlor, metolachlor, and atrazine under two weed densities”

✓ located verbatim in the source · abstract, characters 0–200 · show in text ↑
e4

“However, giant foxtail control was less with starch-encapsulated formulations than commercial formulations with 75% rates of alachlor plus atrazine”

✓ located verbatim in the source · abstract, characters 655–802 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

At 75 and 100% rates of metolachlor plus atrazine, giant foxtail control was lower with starch-encapsulated than with commercial formulations.

Treatment
75 and 100% rates of metolachlor plus atrazinee5
Interactor
giant foxtaile5weed
Outcome
giant foxtail controle5
Direction
lesse5
Comparator
commercial formulationse5

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

Zea mays subsp. mays
Zea mays subsp. mays · TaxonDominicus Johannes Bergsma · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Field research was conducted at Rosemount, MN in 1990 and 1991 to determine the effect of starch encapsulation on weed control in corn with alachlor, metolachlor, and atrazine under two weed densities”

✓ located verbatim in the source · abstract, characters 0–200 · show in text ↑
e5

“However, giant foxtail control was less with starch-encapsulated formulations than commercial formulations with 75% rates of alachlor plus atrazine and both 75 and 100% rates of metolachlor plus atrazine”

✓ located verbatim in the source · abstract, characters 655–858 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

At low weed densities, corn yield did not differ from the weed-free control with any treatment.

Treatment
any treatmente6
Outcome
corn yielde6
Direction
not differente6
Qualifier
At low weed densitiese6
Comparator
weed-free controle6

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

Zea mays subsp. mays
Zea mays subsp. mays · TaxonDominicus Johannes Bergsma · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Field research was conducted at Rosemount, MN in 1990 and 1991 to determine the effect of starch encapsulation on weed control in corn with alachlor, metolachlor, and atrazine under two weed densities”

✓ located verbatim in the source · abstract, characters 0–200 · show in text ↑
e6

“At low weed densities, corn yield was not different with any treatment, except starch-encapsulated metolachlor plus atrazine at 75% rates, compared to the weed-free control”

✓ located verbatim in the source · abstract, characters 860–1032 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

At low weed densities, corn yield with starch-encapsulated metolachlor plus atrazine at 75% rates differed from the weed-free control.

Treatment
starch-encapsulated metolachlor plus atrazine at 75% ratese6
Outcome
corn yielde6
Qualifier
At low weed densitiese6
Comparator
weed-free controle6

Not reportedDirection

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

Zea mays subsp. mays
Zea mays subsp. mays · TaxonDominicus Johannes Bergsma · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Field research was conducted at Rosemount, MN in 1990 and 1991 to determine the effect of starch encapsulation on weed control in corn with alachlor, metolachlor, and atrazine under two weed densities”

✓ located verbatim in the source · abstract, characters 0–200 · show in text ↑
e6

“At low weed densities, corn yield was not different with any treatment, except starch-encapsulated metolachlor plus atrazine at 75% rates, compared to the weed-free control”

✓ located verbatim in the source · abstract, characters 860–1032 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Alachlor plus atrazine at full rates was the only starch-encapsulated treatment whose corn yield did not differ from the weed-free control at high weed densities.

Treatment
Alachlor plus atrazine at full ratese7
Outcome
corn yielde7
Direction
not differente7
Qualifier
at high weed densitiese7
Comparator
weed-free controle7

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

Zea mays subsp. mays
Zea mays subsp. mays · TaxonDominicus Johannes Bergsma · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Field research was conducted at Rosemount, MN in 1990 and 1991 to determine the effect of starch encapsulation on weed control in corn with alachlor, metolachlor, and atrazine under two weed densities”

✓ located verbatim in the source · abstract, characters 0–200 · show in text ↑
e7

“Alachlor plus atrazine at full rates was the only starch-encapsulated treatment to result in corn yield not different from the weed-free control at high weed densities”

✓ located verbatim in the source · abstract, characters 1034–1201 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

All commercial formulation treatments gave corn yields not different from the weed-free control at high weed densities.

Treatment
all commercial formulation treatmentse1
Outcome
corn yieldse1
Direction
not differente1
Qualifier
at high weed densitiese1
Comparator
weed-free controle1

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

Zea mays subsp. mays
Zea mays subsp. mays · TaxonDominicus Johannes Bergsma · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Field research was conducted at Rosemount, MN in 1990 and 1991 to determine the effect of starch encapsulation on weed control in corn with alachlor, metolachlor, and atrazine under two weed densities”

✓ located verbatim in the source · abstract, characters 0–200 · show in text ↑
e1

“Conversely, all commercial formulation treatments resulted in corn yields not different from the weed-free control at high weed densities”

✓ located verbatim in the source · abstract, characters 1203–1340 · show in text ↑

atrazine · yield · Zea mays (maize)Results differ

240 papers: 205 positive, 35 negative or no effect

34 papers in the same direction as this paper · 205 reporting no difference from an alternative

  1. positive
  2. positive
  3. positive

236 papers more in this group

See all 240 papers →

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

12 papers: 9 positive, 3 negative or no effect

2 papers in the same direction as this paper · 9 in the opposite direction

  1. positive
  2. positive
  3. positive

8 papers more in this group

See all 12 papers →

metolachlor · control · Zea mays (maize)Positive and negative results

27 papers: 24 positive, 3 negative or no effect

2 papers in the same direction as this paper · 24 in the opposite direction

  1. positive
  2. positive
  3. positive

23 papers more in this group

See all 27 papers →

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

27 papers: 20 positive, 7 negative or no effect

6 papers in the same direction as this paper · 20 reporting no difference from an alternative

  1. positive
  2. positive
  3. positive

23 papers more in this group

See all 27 papers →

atrazine · control · Zea mays (maize)Positive and negative results

86 papers: 69 positive, 17 negative or no effect

16 papers in the same direction as this paper · 69 in the opposite direction

  1. positive
  2. positive
  3. positive

82 papers more in this group

See all 86 papers →

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

119 papers: 94 positive, 25 negative or no effect

24 papers in the same direction as this paper · 94 reporting no difference from an alternative

  1. positive
  2. positive
  3. positive

115 papers more in this group

See all 119 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.