Paper · 2019 · International Journal of Chemical Studies

Effect of supplemental irrigation and cotton based intercropping systems on weed control and cotton equivalent yield under rainfed condition

S. Suganthi; D. Sandeep Raja

6
claims
8
verbatim quotes
0
citations
2
research areas
✓
Open access

Abstract

A field trial was conducted in farmer’s field to evaluate the supplemental irrigation of cotton based intercropping system on weed dynamics under rainfed Vertisols during Kharif season of 2018-19. The treatments in vertical strip plot includes no supplemental irrigation (SI0) (rainfed), supplemental irrigation at vegetative stage (SI1), supplemental irrigation at squaring to peak flowering stage (SI2), supplemental irrigation at boll formation stage (SI3), supplemental irrigation at above mentioned all stages of cotton (SI4) and supplemental irrigation at wilting symptom appearance (SI5). Horizontal strip includes cotton alone (IC0), cotton + blackgram (1:3) (IC1), cotton + clusterbean (1:3) (IC2) and cotton + coriander (1:4) (IC3). Depending on the time of irrigation, the cotton equivalent yield, weed density and weed dry weight differed among supplemental irrigation treatments. But, lower value of cotton equivalent yield, weed density and dry weight was observed in control (No supplemental irrigation). Higher value of cotton equivalent yield, weed density was observed in supplemental irrigation at wilting symptom appearance. Lower weed density and weed dry weight was recorded in cotton + clusterbean (1:3) at 30 DAS and 60 DAS. Increase in plant population and canopy coverage caused increased weed smothering in cotton + clusterbean (1:3) by 25.3 to 39.5 per cent.

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 6

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

No supplemental irrigation had lower cotton equivalent yield.

Treatment
No supplemental irrigatione1
Outcome
cotton equivalent yielde1
Direction
lowere1

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

e1

“lower value of cotton equivalent yield, weed density and dry weight was observed in control (No supplemental irrigation)”

✓ located verbatim in the source · abstract, characters 898–1018 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

No supplemental irrigation had lower weed density and dry weight.

Treatment
No supplemental irrigatione1
Interactor
weede2weed
Outcome
weed density and dry weighte1
Direction
lowere1

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

e1

“lower value of cotton equivalent yield, weed density and dry weight was observed in control (No supplemental irrigation)”

✓ located verbatim in the source · abstract, characters 898–1018 · show in text ↑
e2

“weed dynamics”

✓ located verbatim in the source · abstract, characters 126–139 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Irrigation at wilting symptoms produced higher cotton equivalent yield.

Treatment
supplemental irrigation at wilting symptom appearancee1
Outcome
cotton equivalent yielde1
Direction
Highere1

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

e1

“Higher value of cotton equivalent yield, weed density was observed in supplemental irrigation at wilting symptom appearance”

✓ located verbatim in the source · abstract, characters 1020–1143 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Irrigation at wilting symptoms produced higher weed density.

Treatment
supplemental irrigation at wilting symptom appearancee1
Interactor
weede2weed
Outcome
weed densitye1
Direction
Highere1

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

e1

“Higher value of cotton equivalent yield, weed density was observed in supplemental irrigation at wilting symptom appearance”

✓ located verbatim in the source · abstract, characters 1020–1143 · show in text ↑
e2

“weed dynamics”

✓ located verbatim in the source · abstract, characters 126–139 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Cotton plus clusterbean had lower weed density and dry weight at 30 and 60 DAS.

Treatment
cotton + clusterbean (1:3)e1
Interactor
weede1weed
Outcome
weed density and weed dry weighte1
Direction
Lowere1
Qualifier
30 DAS and 60 DASe1

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

e1

“Lower weed density and weed dry weight was recorded in cotton + clusterbean (1:3) at 30 DAS and 60 DAS”

✓ located verbatim in the source · abstract, characters 1145–1247 · show in text ↑
Mechanismobservedoriginal resultpositivemeasured

Claim · model-written summary

Cotton plus clusterbean increased weed smothering by 25.3 to 39.5 per cent through greater plant population and canopy cover.

Treatment
cotton + clusterbean (1:3)e1
Interactor
weede1weed
Outcome
weed smotheringe1
Direction
increasede1
Value
25.3 to 39.5 per cente1
Qualifier
Increase in plant population and canopy coveragee1

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

e1

“Increase in plant population and canopy coverage caused increased weed smothering in cotton + clusterbean (1:3) by 25.3 to 39.5 per cent”

✓ located verbatim in the source · abstract, characters 1249–1385 · show in text ↑

Cyamopsis tetragonoloba · weed · 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 →

irrigation · weed · Gossypium hirsutum (cotton)Positive and negative results

8 papers: 7 positive, 1 negative or no effect

7 in the opposite direction

  1. positive
  2. positive
  3. positive

4 papers more in this group

See all 8 papers →

irrigation · yield · Gossypium hirsutum (cotton)Positive and negative results

399 papers: 304 positive, 95 negative or no effect

303 papers in the same direction as this paper · 86 in the opposite direction · 9 reporting no difference from an alternative

  1. no effect
  2. negative
  3. negative

395 papers more in this group

See all 399 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.