Paper · 1967 · Journal of Horticultural Science

The Effect of Irrigation on Pea Crops Grown at Different Plant Densities

P. J. Salter; J. B. Williams

4
claims
9
verbatim quotes
28
citations
1
research areas
—
Not open access

Abstract

SummaryFive experiments carried out over three years are described in which the effects of irrigation at various growth stages on the yield of peas from plants grown at different plant densities were determined. Results showed that, irrespective of the density at which the plants were grown, plants irrigated at the start of flowering and again as the pods were swelling produced significantly higher yields than unirrigated plants. Yield of peas per plant was consistently reduced as density increased but yield per unit area did not show a consistent relationship with plant density from year to year. The results indicated that, even when irrigation is available, plant densities of five to six plants per sq. ft. should not be exceeded.

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 4

Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Irrigation at flowering and pod swelling raised pea yield over unirrigated plants regardless of density.

Treatment
irrigated at the start of flowering and again as the pods were swellinge0
Outcome
yieldse0
Direction
highere0
Qualifier
irrespective of the density at which the plants were growne1
Comparator
unirrigated plantse0

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

Lathyrus oleraceus
Lathyrus oleraceus · TaxonRenee Comet (photographer) AV Number: AV-9400-4164 · Public domain · Wikimedia Commons ↗

Verbatim

e0

“plants irrigated at the start of flowering and again as the pods were swelling produced significantly higher yields than unirrigated plants”

✓ located verbatim in the source · abstract, characters 293–432 · show in text ↑
e1

“irrespective of the density at which the plants were grown”

✓ located verbatim in the source · abstract, characters 233–291 · show in text ↑
t0

“Pea Crops”

✓ located verbatim in the source · title, characters 28–37 · show in text ↑
Associationobservedoriginal resultnegativemeasured

Claim · model-written summary

Pea yield per plant declined as planting density increased.

Treatment
density increasede0
Outcome
Yield of peas per plante0
Direction
reducede0

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

Lathyrus oleraceus
Lathyrus oleraceus · TaxonRenee Comet (photographer) AV Number: AV-9400-4164 · Public domain · Wikimedia Commons ↗

Verbatim

e0

“Yield of peas per plant was consistently reduced as density increased”

✓ located verbatim in the source · abstract, characters 434–503 · show in text ↑
t0

“Pea Crops”

✓ located verbatim in the source · title, characters 28–37 · show in text ↑
Associationobservedoriginal resultmixedmeasured

Claim · model-written summary

Pea yield per unit area had no consistent relation with density across years.

Treatment
plant densitye0
Outcome
yield per unit areae0
Qualifier
from year to yeare0

Not reportedDirection

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

Lathyrus oleraceus
Lathyrus oleraceus · TaxonRenee Comet (photographer) AV Number: AV-9400-4164 · Public domain · Wikimedia Commons ↗

Verbatim

e0

“yield per unit area did not show a consistent relationship with plant density from year to year”

✓ located verbatim in the source · abstract, characters 508–603 · show in text ↑
t0

“Pea Crops”

✓ located verbatim in the source · title, characters 28–37 · show in text ↑
Recommendationauthor interpretationoriginal resultpositivebasis n/a

Claim · model-written summary

The authors recommend at most five to six pea plants per square foot even with irrigation.

Outcome
plant densities of five to six plants per sq. ft. should not be exceedede0
Qualifier
even when irrigation is availablee0

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

Lathyrus oleraceus
Lathyrus oleraceus · TaxonRenee Comet (photographer) AV Number: AV-9400-4164 · Public domain · Wikimedia Commons ↗

Verbatim

e0

“even when irrigation is available, plant densities of five to six plants per sq. ft. should not be exceeded”

✓ located verbatim in the source · abstract, characters 633–740 · show in text ↑
t0

“Pea Crops”

✓ located verbatim in the source · title, characters 28–37 · show in text ↑

irrigation · yield · Lathyrus oleraceus (pea)Results differ

52 papers: 46 positive, 6 negative or no effect

45 papers in the same direction as this paper · 6 in the opposite direction

  1. no effect
  2. positive
  3. positive

48 papers more in this group

See all 52 papers →

stage · yield · Lathyrus oleraceus (pea)Positive and negative results

15 papers: 11 positive, 4 negative or no effect

10 papers in the same direction as this paper · 4 in the opposite direction

  1. no effect
  2. positive
  3. positive
    Removing shade at flowering allowed pea yields to approach yields under full daylight throughout.

    The growth of vining peas · 1971 · compared with peas grown entirely in full daylight

    Same directionCites this paper

11 papers more in this group

See all 15 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.