Search claims · PlantClaims

Observationobservedoriginal resultnegativemeasured

Claim · model-written summary

Yield of the highly calcareous-soil population tended to decrease in highly calcareous soils.

Taxon: Cynodon dactylonCynodon dactylont0
Outcome: decreasee0
Direction: decreasee0
Setting: highly calcareous soilse0

Verbatim

e0
“though in highly calcareous soils it tended to decrease”
✓ located verbatim in the source · abstract, characters 441–496

t0
“CYNODON DACTYLON”
✓ located verbatim in the source · title, characters 49–65

Title

DIFFERENTIAL RESPONSE OF THE EDAPHIC ECOTYPES IN CYNODON DACTYLON (L) PERS. TO SOIL CALCIUM

P. S. RAMAKRISHNAN; VIJAY K. SINGH New Phytologist 1966. doi:10.1111/j.1469-8137.1966.tb05419.x

Other claims from this paper (11)

Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

decrease the percentage of wild white clover

Taxon: PERMANENT PASTURESt0
Outcome: percentage of wild white clovere0
Direction: decreasee0

Not reportedTreatmentComparator

Verbatim

e0
“decrease the percentage of wild white clover”
✓ located verbatim in the source · abstract, characters 1063–1107

t0
“PERMANENT PASTURES”
✓ located verbatim in the source · title, characters 90–108

Title

THE EFFECTS OF VARIOUS INCREMENTS OF N, P AND K ON THE YIELD AND BOTANICAL COMPOSITION OF PERMANENT PASTURES

T. C. Chiasson Canadian Journal of Plant Science 1960. doi:10.4141/cjps60-034

Other claims from this paper (12)

Intervention effect Phosphorus, at rates up to 80 pounds per acre, brought about the most marked improvement
Intervention effect This element was responsible for highly significant increases in yield
Intervention effect increased wild white clover and useful grasses
Intervention effect decreased weeds, moss and bare ground markedly
Intervention effect Potassium, up to 60 pounds per acre, also gave highly significant increases in yield
Intervention effect Potassium had relatively little effect on the prevalence of species at first
Intervention effect by the fourth year had maintained white clover better than phosphorus
Intervention effect had also decreased weeds and moss
Intervention effect Nitrogen, at 15 pounds per acre, increased yields each year but only during the early part of the season
Intervention effect Thirty pounds per acre was superior to the 15-pound rate one year only
Intervention effect It actually tended to decrease yields during July and August
Intervention effect a corresponding increase in grasses

Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

It actually tended to decrease yields during July and August

Taxon: PERMANENT PASTURESt0
Outcome: yieldse0
Direction: decreasee0

Not reportedTreatmentComparator

Verbatim

e0
“It actually tended to decrease yields during July and August”
✓ located verbatim in the source · abstract, characters 938–998

t0
“PERMANENT PASTURES”
✓ located verbatim in the source · title, characters 90–108

Title

THE EFFECTS OF VARIOUS INCREMENTS OF N, P AND K ON THE YIELD AND BOTANICAL COMPOSITION OF PERMANENT PASTURES

T. C. Chiasson Canadian Journal of Plant Science 1960. doi:10.4141/cjps60-034

Other claims from this paper (12)

Intervention effect Phosphorus, at rates up to 80 pounds per acre, brought about the most marked improvement
Intervention effect This element was responsible for highly significant increases in yield
Intervention effect increased wild white clover and useful grasses
Intervention effect decreased weeds, moss and bare ground markedly
Intervention effect Potassium, up to 60 pounds per acre, also gave highly significant increases in yield
Intervention effect Potassium had relatively little effect on the prevalence of species at first
Intervention effect by the fourth year had maintained white clover better than phosphorus
Intervention effect had also decreased weeds and moss
Intervention effect Nitrogen, at 15 pounds per acre, increased yields each year but only during the early part of the season
Intervention effect Thirty pounds per acre was superior to the 15-pound rate one year only
Intervention effect decrease the percentage of wild white clover
Intervention effect a corresponding increase in grasses

Associationobservedoriginal resultnegativemeasured

Claim · model-written summary

Acid soil populations had lower yield at higher calcium.

Taxon: FESTUCA OVINA L.t0
Treatment: higher calcium levelse0
Outcome: yielde0
Direction: decreasee0

Verbatim

e0
“there was a decrease in yield of the acidic populations at higher calcium levels.”
✓ located verbatim in the source · abstract, characters 470–551

t0
“FESTUCA OVINA L.”
✓ located verbatim in the source · title, characters 52–68

Title

DIFFERENTIAL RESPONSE TO CALCIUM WITHIN THE SPECIES FESTUCA OVINA L.

R. W. SNAYDON; A. D. BRADSHAW New Phytologist 1961. doi:10.1111/j.1469-8137.1961.tb06254.x

Other claims from this paper (9)

Observation Festuca ovina populations differ strongly in response to calcium.
Association Populations from acid soils responded weakly to calcium.
Association Populations from calcareous soils responded strongly to calcium.
Association At low concentrations all populations responded linearly to log calcium concentration.
Observation Calcium response differences occurred even between populations roughly one mile apart.
Observation Individuals within a population also varied in calcium response.
Mechanism Population response differences reflected calcium absorption ability at low concentrations.
Observation Populations differed in their ability to absorb other cations.
Observation Populations differed in rooting at low calcium.

Associationobservedoriginal resultmeasured

Claim · model-written summary

Rush and sedge made up a decreasing share of the hay as N rate rose from 0 to 600 lb. N/acre.

Taxon: Rush and sedgee2
Treatment: 0, 200, 400, and 600 lb. N/acree2
Outcome: botanical compositione1
Direction: decreaseinferrede2
Value: 62, 54, 12, and 4%e2

Verbatim

e1
“High rates of N and P fertilizers and manure changed the botanical composition and increased hay yields from native flood meadows”
✓ located verbatim in the source · abstract, characters 9–138

e2
“Rush and sedge composed 62, 54, 12, and 4% of the hay at 0, 200, 400, and 600 lb. N/acre, while grasses composed 20, 44, 88, and 96% with the same rates of N”
✓ located verbatim in the source · abstract, characters 140–297

Title

Fertilizer‐Induced Changes in Botanical Composition, Yield, and Quality of Native Meadow Hay¹

C. B. Rumburg; C. S. Cooper Agronomy Journal 1961. doi:10.2134/agronj1961.00021962005300040015x

Other claims from this paper (5)

Intervention effect High rates of N and P fertilizers and manure changed the botanical composition of native meadow hay.
Association Grasses made up an increasing share of the hay as N rate rose from 0 to 600 lb. N/acre.
Intervention effect Yields of hay were significantly increased by N, P and manure.
Intervention effect The fertilizer treatments had little effect on the crude-protein content of the hay.
Intervention effect Increasing N rates decreased the P content of the forage.

“yield decrease”

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