Paper · 2011 · Indian Journal of Weed Science

Effect of Herbicides Fenoxaprop-P-ethyl and 2,4-D Ethyl-ester on Soil Mycoflora Including VAM Fungi in Wheat Crop

Anil Kumar Gupta; Ashok Aggarwal; Chhavi Mangla; et al.

5
claims
11
verbatim quotes
13
citations
2
research areas
—
Not open access

Abstract

Wheat (Triticum aestivum L.) is the major staple food of India and its increased production is essential for food security. Weeds constitute one of the biggest problems in agriculture that not only reduce the yield and quality of wheat crop but also utilize essential nutrients. Hence, weed control is essential for increasing wheat production. Despite of its control on weeds, herbicides also affect beneficial non-targeted soil microbes including VAM fungi. Fenoxaprop-P-ethyl and 2, 4-D ethyl-ester are two most widely used herbicides in northern India to control monocot and dicot weeds, respectively. However, their effects on mycorrhizal fungi are seldom highlighted. Therefore, the present investigation was focused on the effect of these herbicides on soil fungi of wheat crop alongwith special emphasis on mycorrhizal fungi. Three doses of each herbicide i. e. fenoxaprop and 2, 4-D (recommended dose 0.1 kg/ha; 0.5 kg/ha, half of the recommended dose 0.05 kg/ha; 0.25 kg/ha and double of the recommended dose 0.2 kg/ha; 1.0 kg/ha), respectively, were applied and their effect on soil fungi was studied at 30th, 60th, 90th and 120th day of treatment. Warcup's soil plate method, wet sieving and decanting technique and rapid clearing and staining techniques were used for qualitative study, isolation of mycorrhizal spores and root colonization, respectively. Our results indicate that both herbicides had significant deleterious effects on soil fungi, mycorrhizal spore numbers and percentage root colonization and this effect increased with herbicide concentration. In our chemical warfare against weeds, it is necessary to avoid serious injuries to the beneficial soil microbes. Therefore, use of herbicides in high doses should be resorted to carefully and judiciously.

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Claims 5

Intervention effectobservedoriginal resultnegativesignificant (as stated)measured

Claim · model-written summary

Both herbicides significantly reduced soil fungi.

Treatment
herbicidese1
Outcome
soil fungie1
Direction
decreaseinferrede1

Not reportedComparator

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

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e1

“Our results indicate that both herbicides had significant deleterious effects on soil fungi, mycorrhizal spore numbers and percentage root colonization and this effect increased with herbicide concentration”

✓ located verbatim in the source · abstract, characters 1369–1575 · show in text ↑
t0

“Effect of Herbicides Fenoxaprop-P-ethyl and 2,4-D Ethyl-ester on Soil Mycoflora Including VAM Fungi in Wheat Crop”

✓ located verbatim in the source · title, characters 0–113 · show in text ↑
Associationobservedoriginal resultnegativemeasured

Claim · model-written summary

The deleterious effect of herbicides increased with herbicide concentration.

Treatment
herbicide concentratione1
Outcome
this effecte1
Direction
increasede1

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

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e1

“Our results indicate that both herbicides had significant deleterious effects on soil fungi, mycorrhizal spore numbers and percentage root colonization and this effect increased with herbicide concentration”

✓ located verbatim in the source · abstract, characters 1369–1575 · show in text ↑
t0

“Effect of Herbicides Fenoxaprop-P-ethyl and 2,4-D Ethyl-ester on Soil Mycoflora Including VAM Fungi in Wheat Crop”

✓ located verbatim in the source · title, characters 0–113 · show in text ↑
Intervention effectobservedoriginal resultnegativesignificant (as stated)measured

Claim · model-written summary

Herbicides significantly reduced mycorrhizal spore numbers and root colonization by VAM fungi in wheat.

Treatment
herbicidese1
Interactor
VAM fungie2symbiont
Outcome
mycorrhizal spore numbers and percentage root colonizatione1
Direction
decreaseinferrede1

Not reportedComparator

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

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e1

“Our results indicate that both herbicides had significant deleterious effects on soil fungi, mycorrhizal spore numbers and percentage root colonization and this effect increased with herbicide concentration”

✓ located verbatim in the source · abstract, characters 1369–1575 · show in text ↑
e2

“herbicides also affect beneficial non-targeted soil microbes including VAM fungi”

✓ located verbatim in the source · abstract, characters 378–458 · show in text ↑
t0

“Effect of Herbicides Fenoxaprop-P-ethyl and 2,4-D Ethyl-ester on Soil Mycoflora Including VAM Fungi in Wheat Crop”

✓ located verbatim in the source · title, characters 0–113 · show in text ↑
Recommendationauthor interpretationoriginal resultbasis n/a

Claim · model-written summary

Herbicides should be used in high doses only with care and judiciously.

Outcome
use of herbicides in high dosese3
Qualifier
carefully and judiciouslye3

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

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e3

“use of herbicides in high doses should be resorted to carefully and judiciously”

✓ located verbatim in the source · abstract, characters 1702–1781 · show in text ↑
t0

“Effect of Herbicides Fenoxaprop-P-ethyl and 2,4-D Ethyl-ester on Soil Mycoflora Including VAM Fungi in Wheat Crop”

✓ located verbatim in the source · title, characters 0–113 · show in text ↑
Recommendationauthor interpretationoriginal resultbasis n/a

Claim · model-written summary

Chemical weed control should avoid serious injury to beneficial soil microbes.

Outcome
avoid serious injuries to the beneficial soil microbese4

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

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e4

“it is necessary to avoid serious injuries to the beneficial soil microbes”

✓ located verbatim in the source · abstract, characters 1616–1689 · show in text ↑
t0

“Effect of Herbicides Fenoxaprop-P-ethyl and 2,4-D Ethyl-ester on Soil Mycoflora Including VAM Fungi in Wheat Crop”

✓ located verbatim in the source · title, characters 0–113 · show in text ↑

herbicide · disease · Triticum aestivum (wheat)Positive and negative results

29 papers: 18 positive, 11 negative or no effect

10 papers in the same direction as this paper · 18 in the opposite direction

  1. positive
  2. positive
  3. positive

25 papers more in this group

See all 29 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.