Paper · 1977 · Open Access Repository of ICRISAT (International Crops Research Institute for the Semi-Arid Tropics)

Weed management studies in pigeonpea (Cajanus cajan L.) based intercropping

S. V. R. Shetty; M. R. K. Rao

8
claims
11
verbatim quotes
1
citations
2
research areas
✓
Open access

Abstract

Intercropping pigeon pea with various other crops reduced weed growth by 75%. The crop-weed balance in the intercrop system was influenced by many factors such as crop species and variety, plant population, crop geometry, soil types and herbicides. Among the various intercrops maize, cowpea [Vigna unguiculata] and pearl millet [Pennisetum americanum] showed an initial weed-smothering effect while groundnut was effective at later stages of crop growth. Weed growth in the compact type of pigeon pea (HY3A) was substantially higher than in the spreading type (ST1). Within the intercrop system, row arrangement did not influence weed infestation but the increase in population pressure resulted in considerable decreases in weed DM weights. Among the different herbicides evaluated in various systems, alachlor at 1 kg/ha in maize + pigeon pea caused initial toxicity to pigeon pea while prometryne, terbutryne and ametryne proved promising in sorghum + pigeon pea. From summary

Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher.

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Claims 8

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Intercropping pigeon pea with other crops reduced weed growth by 75%.

Taxon
pigeon peaCajanus cajane0
Treatment
Intercropping pigeon pea with various other cropse0
Interactor
weede0weed
Outcome
weed growthe0
Direction
reducede0
Value
75%e0

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

“Intercropping pigeon pea with various other crops reduced weed growth by 75%.”

✓ located verbatim in the source · abstract, characters 0–77 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

Maize, cowpea, and pearl millet intercrops initially smothered weeds.

Taxon
pigeon peaCajanus cajane1
Treatment
maize, cowpea [Vigna unguiculata] and pearl millet [Pennisetum americanum]e0
Interactor
weede0weed
Outcome
weed-smothering effecte0
Direction
weed-smotheringe0
Qualifier
initiale0

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

“Among the various intercrops maize, cowpea [Vigna unguiculata] and pearl millet [Pennisetum americanum] showed an initial weed-smothering effect”

✓ located verbatim in the source · abstract, characters 249–393 · show in text ↑
e1

“Intercropping pigeon pea with various other crops reduced weed growth by 75%.”

✓ located verbatim in the source · abstract, characters 0–77 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

Groundnut intercrops controlled weeds later in crop growth.

Taxon
pigeon peaCajanus cajant0
Treatment
groundnute0
Outcome
effectivee0
Direction
effectivee0
Qualifier
later stages of crop growthe0

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

“groundnut was effective at later stages of crop growth.”

✓ located verbatim in the source · abstract, characters 400–455 · show in text ↑
t0

“Intercropping pigeon pea with various other crops”

✓ located verbatim in the source · abstract, characters 0–49 · show in text ↑
Observationobservedoriginal resultnegativemeasured

Claim · model-written summary

Weed growth was higher in compact pigeon pea HY3A than spreading ST1.

Taxon
pigeon peaCajanus cajane0
Material
HY3Ae0
Interactor
Weede0weed
Outcome
Weed growthe0
Direction
substantially highere0
Comparator
ST1e0

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

“Weed growth in the compact type of pigeon pea (HY3A) was substantially higher than in the spreading type (ST1).”

✓ located verbatim in the source · abstract, characters 456–567 · show in text ↑
Observationobservedoriginal resultno effectmeasured

Claim · model-written summary

Row arrangement did not influence weed infestation in the intercrop system.

Taxon
intercrope0
Treatment
row arrangemente0
Interactor
weede0weed
Outcome
weed infestatione0
Direction
did not influencee0

Verbatim

e0

“Within the intercrop system, row arrangement did not influence weed infestation”

✓ located verbatim in the source · abstract, characters 568–647 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

Increasing population pressure decreased weed dry matter weights in the intercrop system.

Taxon
pigeon peaCajanus cajant0
Treatment
increase in population pressuree0
Interactor
weede0weed
Outcome
weed DM weightse0
Direction
considerable decreasese0

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

“the increase in population pressure resulted in considerable decreases in weed DM weights.”

✓ located verbatim in the source · abstract, characters 652–742 · show in text ↑
t0

“Intercropping pigeon pea with various other crops”

✓ located verbatim in the source · abstract, characters 0–49 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Alachlor at 1 kg/ha in maize and pigeon pea caused initial toxicity to pigeon pea.

Taxon
pigeon peaCajanus cajane0
Treatment
alachlor at 1 kg/hae0
Outcome
toxicity to pigeon peae0
Direction
causede0
Qualifier
initiale0

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

“alachlor at 1 kg/ha in maize + pigeon pea caused initial toxicity to pigeon pea”

✓ located verbatim in the source · abstract, characters 804–883 · show in text ↑
Observationauthor interpretationoriginal resultpositivemeasured

Claim · model-written summary

Prometryne, terbutryne, and ametryne were promising in sorghum and pigeon pea intercrops.

Taxon
pigeon peaCajanus cajane0
Treatment
prometryne, terbutryne and ametrynee0
Outcome
promisinge0
Direction
promisinge0
Qualifier
sorghum + pigeon peae0

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

“prometryne, terbutryne and ametryne proved promising in sorghum + pigeon pea.”

✓ located verbatim in the source · abstract, characters 890–967 · show in text ↑

intercropping · weed · Cajanus cajan (pigeon pea)Results agree

7 papers: 7 positive, 0 negative or no effect

6 papers in the same direction as this paper

  1. positive
  2. positive
  3. positive

3 papers more in this group

See all 7 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.