Paper · 2016 · Indian Journal of Weed Science

Irrigation schedule and crop geometry effect on weed management in maize + green gram intercropping system

S. Mohapatra; A.K. Mohanty; S.K. Tripathy; et al.

11
claims
16
verbatim quotes
2
citations
2
research areas
✓
Open access · cc-by

Abstract

A field experiment was conducted under West Central Table Land Zone, Odisha during winter (Rabi) seasons of 2013–14 and 2014–15 to study the effect of irrigation schedule and planting geometry on weed control and productivity in maize + green gram intercropping. The results revealed that irrigating the crop at 0.8 IW/CPE recorded lowest weed density (23.6/m2) and weed dry matter (10.9 g/m2). This moisture regime also produced highest yield of individual component (3.36 t/ha for maize and 0.22 t/ha for greengram) of the system and the highest maize equivalent yield (4.4 t/ha). Intercropping of maize with green gram irrespective of their row ratio effectively reduced the weed density and dry weight at 60 days after sowing compared to pure cropping of maize. The grain yield of maize in all the intercropping system except 1:2 row ratio was statistically at par with its yield in pure stand. However the productivity of green gram significantly reduced in intercropping system compared to its sole cropping (0.35 t/ha). Maize equivalent yield in 2:2 planting pattern was remarkably high (4.87 t/ha) compared to other planting geometries tested. The highest B:C ratio was recorded at 0.80 IW/CPE (2.25) and with 2:2 planting pattern of maize + green gram (2.28).

Abstract from the paper’s OpenAlex record; open copy licensed cc-by. 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 11

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Irrigation at 0.8 IW/CPE produced the lowest weed density, 23.6/m2.

Taxon
maizeZea mayst0
Treatment
0.8 IW/CPEe0
Interactor
weede0weed
Outcome
weed densitye0
Direction
loweste0
Value
23.6/m2e0

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

“irrigating the crop at 0.8 IW/CPE recorded lowest weed density (23.6/m2)”

✓ located verbatim in the source · abstract, characters 289–361 · show in text ↑
t0

“maize”

✓ located verbatim in the source · title, characters 67–72 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Irrigation at 0.8 IW/CPE gave the lowest weed dry matter, 10.9 g/m2.

Taxon
maizeZea mayst0
Treatment
0.8 IW/CPEe0
Interactor
weede0weed
Outcome
weed dry mattere0
Direction
loweste0
Value
10.9 g/m2e0

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

“irrigating the crop at 0.8 IW/CPE recorded lowest weed density (23.6/m2) and weed dry matter (10.9 g/m2)”

✓ located verbatim in the source · abstract, characters 289–393 · show in text ↑
t0

“maize”

✓ located verbatim in the source · title, characters 67–72 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

At 0.8 IW/CPE, maize yield reached a highest 3.36 t/ha.

Taxon
maizeZea mayse0
Treatment
0.8 IW/CPEe1
Outcome
yielde0
Direction
higheste0
Value
3.36 t/hae0

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

“highest yield of individual component (3.36 t/ha for maize and 0.22 t/ha for greengram)”

✓ located verbatim in the source · abstract, characters 430–517 · show in text ↑
e1

“0.8 IW/CPE”

✓ located verbatim in the source · abstract, characters 312–322 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

At 0.8 IW/CPE, green gram yield reached a highest 0.22 t/ha.

Treatment
0.8 IW/CPEe1
Outcome
yielde0
Direction
higheste0
Value
0.22 t/hae0

Not reportedComparator

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

Vigna radiata var. radiata
Vigna radiata var. radiata · Taxon · picture of the speciesIvar Leidus · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“highest yield of individual component (3.36 t/ha for maize and 0.22 t/ha for greengram)”

✓ located verbatim in the source · abstract, characters 430–517 · show in text ↑
e1

“0.8 IW/CPE”

✓ located verbatim in the source · abstract, characters 312–322 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

At 0.8 IW/CPE maize equivalent yield was highest at 4.4 t/ha.

Taxon
maizeZea mayse0
Treatment
0.8 IW/CPEe1
Outcome
maize equivalent yielde0
Direction
higheste0
Value
4.4 t/hae0

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

“highest maize equivalent yield (4.4 t/ha)”

✓ located verbatim in the source · abstract, characters 540–581 · show in text ↑
e1

“0.8 IW/CPE”

✓ located verbatim in the source · abstract, characters 312–322 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Intercropping reduced weed density and dry weight at 60 days versus pure maize.

Taxon
maizeZea mayse0
Treatment
Intercropping of maize with green grame0
Interactor
weede0weed
Outcome
weed density and dry weighte0
Direction
reducede0
Qualifier
60 days after sowinge0
Comparator
pure cropping of maizee0

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

“Intercropping of maize with green gram irrespective of their row ratio effectively reduced the weed density and dry weight at 60 days after sowing compared to pure cropping of maize”

✓ located verbatim in the source · abstract, characters 583–764 · show in text ↑
Intervention effectobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

Maize grain yield under most intercrops was statistically at par with pure stand.

Taxon
maizeZea mayse0
Treatment
intercropping systeme0
Outcome
grain yielde0
Direction
at pare0
Qualifier
except 1:2 row ratioe0
Comparator
pure stande0

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

“The grain yield of maize in all the intercropping system except 1:2 row ratio was statistically at par with its yield in pure stand”

✓ located verbatim in the source · abstract, characters 766–897 · show in text ↑
Intervention effectobservedoriginal resultnegativesignificant (as stated)measured

Claim · model-written summary

Green gram productivity decreased significantly in intercropping versus sole cropping.

Treatment
intercropping systeme0
Outcome
productivitye0
Direction
reducede0
Qualifier
0.35 t/hae0
Comparator
sole croppinge0

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

Vigna radiata var. radiata
Vigna radiata var. radiata · Taxon · picture of the speciesIvar Leidus · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“productivity of green gram significantly reduced in intercropping system compared to its sole cropping (0.35 t/ha)”

✓ located verbatim in the source · abstract, characters 911–1025 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

The 2:2 row pattern had a high maize equivalent yield of 4.87 t/ha.

Taxon
maizeZea mayse0
Treatment
2:2 planting patterne0
Outcome
Maize equivalent yielde0
Direction
remarkably highe0
Value
4.87 t/hae0
Comparator
other planting geometries testede0

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

“Maize equivalent yield in 2:2 planting pattern was remarkably high (4.87 t/ha) compared to other planting geometries tested”

✓ located verbatim in the source · abstract, characters 1027–1150 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

The 0.80 IW/CPE irrigation schedule gave the highest benefit-cost ratio, 2.25.

Treatment
0.80 IW/CPEe0
Outcome
B:C ratioe0
Direction
higheste0
Value
2.25e0

Not reportedTaxonComparator

Verbatim

e0

“highest B:C ratio was recorded at 0.80 IW/CPE (2.25)”

✓ located verbatim in the source · abstract, characters 1156–1208 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

The 2:2 planting pattern gave the highest benefit-cost ratio, 2.28.

Treatment
2:2 planting patterne0
Outcome
B:C ratioe0
Direction
higheste0
Value
2.28e0

Not reportedTaxonComparator

Verbatim

e0

“highest B:C ratio was recorded at 0.80 IW/CPE (2.25) and with 2:2 planting pattern of maize + green gram (2.28)”

✓ located verbatim in the source · abstract, characters 1156–1267 · show in text ↑

Vigna radiata var. radiata · weed · Zea mays (maize)Results agree

3 papers: 3 positive, 0 negative or no effect

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  2. positive
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intercropping · yield · Vigna radiata (mung bean)Positive and negative results

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intercropping · weed · Zea mays (maize)Positive and negative results

79 papers: 71 positive, 8 negative or no effect

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

834 papers: 613 positive, 221 negative or no effect

220 papers in the same direction as this paper · 613 reporting no difference from an alternative

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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.