Paper · 2013 · Acta Agrobotanica

Residual effect of a few herbicides on chlorophyll content and primary productivity of succeeding crops and associated weeds

A. N. Rao

6
claims
10
verbatim quotes
2
citations
3
research areas
✓
Open access · cc-by

Abstract

The residual effect of a few herbicides viz: Atrataf (atrazine), 2,4-D and Aresin (monolinuron) sprayed in the previous season on the pigment concentration and primary productivity of the crops (viz: Zea mays and Cajanus cajan) grown in rotation, as well as their associated weeds has been studied. The results indicate that the residues of all the three herbicides were non toxic to Zea mays and toxic to Cajanus cajan as an increase in chlorophyll content and primary productivity occurred in the former, whereas the contrary is true for the latter. Weeds from residual plots have shown a considerable decrease in the chlorophyll content and primary productivity. The most susceptible weed to all the three herbicides was Acalypha malabarica, while Echinochloa colonum is susceptible to the residues of Atrazine but is tolerant to the residues of the other two herbicides. Recommendations based on the observations are presented in the paper.

Abstract from the paper’s OpenAlex record; open copy licensed cc-by. Read at the source ↗

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Claims 6

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Residues of all three herbicides increased chlorophyll content and primary productivity in Zea mays.

Taxon
Zea maysZea mayse0
Treatment
residues of all the three herbicidese0
Outcome
chlorophyll content and primary productivitye0
Direction
increasee0

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

“residues of all the three herbicides were non toxic to Zea mays and toxic to Cajanus cajan as an increase in chlorophyll content and primary productivity occurred in the former”

✓ located verbatim in the source · abstract, characters 329–505 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Residues of all three herbicides decreased chlorophyll content and primary productivity in Cajanus cajan.

Taxon
Cajanus cajanCajanus cajane0
Treatment
residues of all the three herbicidese0
Outcome
chlorophyll content and primary productivitye0
Direction
decreaseinferrede0

Not reportedComparator

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

Cajanus cajan
Cajanus cajan · TaxonFilo gèn' · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“residues of all the three herbicides were non toxic to Zea mays and toxic to Cajanus cajan as an increase in chlorophyll content and primary productivity occurred in the former, whereas the contrary is true for the latter”

✓ located verbatim in the source · abstract, characters 329–550 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Weeds in residual plots had lower chlorophyll content and primary productivity.

Taxon
cropst0
Treatment
residual plotse0
Interactor
Weedse0weed
Outcome
chlorophyll content and primary productivitye0
Direction
decreasee0

Not reportedComparator

Verbatim

e0

“Weeds from residual plots have shown a considerable decrease in the chlorophyll content and primary productivity”

✓ located verbatim in the source · abstract, characters 552–664 · show in text ↑
t0

“succeeding crops and associated weeds”

✓ located verbatim in the source · title, characters 87–124 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

Acalypha malabarica was the most susceptible weed to all three herbicides.

Taxon
cropst0
Interactor
Acalypha malabaricaAcalypha malabaricae0weed
Outcome
most susceptible weede0

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

Acalypha malabarica
Acalypha malabarica · InteractorSiddarth Machado · CC BY 4.0 · iNaturalist ↗

Verbatim

e0

“The most susceptible weed to all the three herbicides was Acalypha malabarica”

✓ located verbatim in the source · abstract, characters 666–743 · show in text ↑
t0

“succeeding crops”

✓ located verbatim in the source · title, characters 87–103 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

Echinochloa colonum was susceptible to Atrazine residues.

Taxon
cropst0
Interactor
Echinochloa colonumEchinochloa colonae0weed
Outcome
susceptible to the residues of Atrazinee0

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

Echinochloa colona
Echinochloa colona · InteractorTauʻolunga · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Echinochloa colonum is susceptible to the residues of Atrazine”

✓ located verbatim in the source · abstract, characters 751–813 · show in text ↑
t0

“succeeding crops”

✓ located verbatim in the source · title, characters 87–103 · show in text ↑
Observationobservedoriginal resultnegativemeasured

Claim · model-written summary

Echinochloa colonum tolerated residues of the other two herbicides.

Taxon
cropst0
Interactor
Echinochloa colonumEchinochloa colonae0weed
Outcome
tolerant to the residues of the other two herbicidese0

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

Echinochloa colona
Echinochloa colona · InteractorTauʻolunga · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Echinochloa colonum is susceptible to the residues of Atrazine but is tolerant to the residues of the other two herbicides”

✓ located verbatim in the source · abstract, characters 751–873 · show in text ↑
t0

“succeeding crops”

✓ located verbatim in the source · title, characters 87–103 · show in text ↑

herbicide · physiology: pigments · Zea mays (maize)Positive and negative results

17 papers: 6 positive, 11 negative or no effect

5 papers in the same direction as this paper · 11 in the opposite direction

  1. negative
  2. negative
  3. negative

13 papers more in this group

See all 17 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.