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“yield decrease”

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Organism: Lolium arundinaceum ✕

Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Mefluidide at 280 g ai/ha reduced seedhead density in tall fescue to 9% of the check.

Taxon: Tall FescueLolium arundinaceumt0
Treatment: 280 g ai/ha of mefluididee1
Outcome: Seedhead densitiese1
Direction: decreaseinferrede1
Value: 9%e1
Comparator: checke1

Verbatim

t0
“Tall Fescue (Festuca arundinacea)”
✓ located verbatim in the source · title, characters 31–64

e1
“Seedhead densities averaged 33% of the check with 8.4 g ai/ha of metsulfuron, 17% with 70 g ai/ha of imazethapyr, and 9% with 280 g ai/ha of mefluidide, while forage yields were reduced to about 40% of the check”
✓ located verbatim in the source · abstract, characters 155–366

Title

Broadleaf Herbicide Effects on Tall Fescue (Festuca arundinacea) Seedhead Density, Forage Yield, and Quality

Joseph L. Moyer; Kenneth W. Kelley Weed Technology 1995. doi:10.1017/s0890037x00023332

Other claims from this paper (10)

Intervention effect Metsulfuron at 8.4 g ai/ha reduced seedhead density in tall fescue to 33% of the check.
Intervention effect Imazethapyr at 70 g ai/ha reduced seedhead density in tall fescue to 17% of the check.
Association Forage yields of tall fescue were reduced to about 40% of the check.
Intervention effect Mefluidide, imazethapyr and metsulfuron increased forage crude protein concentration in tall fescue.
Intervention effect Metsulfuron, mefluidide and imazethapyr at 6.3 and 8.4 g/ha reduced neutral-detergent fiber of Ky 31 tall fescue but not of Fawn.
Intervention effect Dicamba plus 2,4-D increased neutral-detergent fiber of Fawn tall fescue.
Intervention effect Metsulfuron at 6.3 and 8.4 g/ha, mefluidide and imazethapyr increased in vitro dry matter digestibility of tall fescue in one of two years.
Intervention effect Adding 2,4-D to metsulfuron reduced some effects of metsulfuron on tall fescue.
Intervention effect Imazethapyr and metsulfuron did not adversely affect total crude protein per hectare more than mefluidide did.
Recommendation Imazethapyr and metsulfuron can be used to control weeds in tall fescue without reducing forage value.

Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Metsulfuron at 8.4 g ai/ha reduced seedhead density in tall fescue to 33% of the check.

Taxon: Tall FescueLolium arundinaceumt0
Treatment: 8.4 g ai/ha of metsulfurone1
Outcome: Seedhead densitiese1
Direction: decreaseinferrede1
Value: 33%e1
Comparator: checke1

Verbatim

t0
“Tall Fescue (Festuca arundinacea)”
✓ located verbatim in the source · title, characters 31–64

e1
“Seedhead densities averaged 33% of the check with 8.4 g ai/ha of metsulfuron, 17% with 70 g ai/ha of imazethapyr, and 9% with 280 g ai/ha of mefluidide, while forage yields were reduced to about 40% of the check”
✓ located verbatim in the source · abstract, characters 155–366

Title

Broadleaf Herbicide Effects on Tall Fescue (Festuca arundinacea) Seedhead Density, Forage Yield, and Quality

Joseph L. Moyer; Kenneth W. Kelley Weed Technology 1995. doi:10.1017/s0890037x00023332

Other claims from this paper (10)

Intervention effect Imazethapyr at 70 g ai/ha reduced seedhead density in tall fescue to 17% of the check.
Intervention effect Mefluidide at 280 g ai/ha reduced seedhead density in tall fescue to 9% of the check.
Association Forage yields of tall fescue were reduced to about 40% of the check.
Intervention effect Mefluidide, imazethapyr and metsulfuron increased forage crude protein concentration in tall fescue.
Intervention effect Metsulfuron, mefluidide and imazethapyr at 6.3 and 8.4 g/ha reduced neutral-detergent fiber of Ky 31 tall fescue but not of Fawn.
Intervention effect Dicamba plus 2,4-D increased neutral-detergent fiber of Fawn tall fescue.
Intervention effect Metsulfuron at 6.3 and 8.4 g/ha, mefluidide and imazethapyr increased in vitro dry matter digestibility of tall fescue in one of two years.
Intervention effect Adding 2,4-D to metsulfuron reduced some effects of metsulfuron on tall fescue.
Intervention effect Imazethapyr and metsulfuron did not adversely affect total crude protein per hectare more than mefluidide did.
Recommendation Imazethapyr and metsulfuron can be used to control weeds in tall fescue without reducing forage value.

Observationobservedoriginal resultnegativemeasured

Claim · model-written summary

Tall fescue crude protein in first-cut forage decreased by 0.40% per day.

Taxon: tall fescueLolium arundinaceume0
Outcome: crude protein (CP) in first-cut foragee1
Direction: decreasese1
Value: 0.40e1
Qualifier: %/daye1

Verbatim

e0
“In vitro dry matter digestibility (IVDMD) values ranged from above 80% down to 45%, with an average rate of decrease during June of 0.74, 0.84, 0.85 and 0.45% per day in timothy, tall fescue, reed canarygrass and Kentucky bluegrass, respectively”
✓ located verbatim in the source · abstract, characters 355–600

e1
“crude protein (CP) in first-cut forage ranged from 28% to 6% and had respective decreases of 0.47, 0.40, 0.39 and 0.28%/day”
✓ located verbatim in the source · abstract, characters 613–736

Title

EFFECTS OF INITIAL HARVEST DATE ON DRY MATTER YIELD, IN VITRO DRY MATTER DIGESTIBILITY AND PROTEIN IN TIMOTHY, TALL FESCUE, REED CANARYGRASS AND KENTUCKY BLUEGRASS

W. MASON; L. LACHANCE Canadian Journal of Plant Science 1983. doi:10.4141/cjps83-085

Other claims from this paper (17)

Observation Timothy IVDMD decreased on average by 0.74% per day during June.
Observation Tall fescue IVDMD decreased on average by 0.84% per day during June.
Observation Reed canarygrass IVDMD decreased on average by 0.85% per day during June.
Observation Kentucky bluegrass IVDMD decreased on average by 0.45% per day during June.
Observation Timothy crude protein in first-cut forage decreased by 0.47% per day.
Observation Reed canarygrass crude protein in first-cut forage decreased by 0.39% per day.
Observation Kentucky bluegrass crude protein in first-cut forage decreased by 0.28% per day.
Observation Regrowth forage in midsummer and fall harvests averaged 63 to 59% IVDMD.
Observation Regrowth forage in midsummer and fall harvests averaged 16 to 20% CP.
Intervention effect Delaying the initial cut continued to increase total annual dry matter yield, except in reed canarygrass.
Intervention effect Delaying the initial cut significantly increased total IVDMD yield until flowering.
Intervention effect Delaying the initial cut decreased total CP yield from stem elongation onwards.
Observation Reed canarygrass reached its optimum CP yield at early heading.
Observation Reed canarygrass had significant increases in IVDMD yield until the flowering stage.
Intervention effect Harvesting all forages at the stem elongation stage substantially reduced yield of DM, IVDMD and CP.
Observation Most of the DM was obtained in the initial harvest.
Observation Almost half of the total CP was obtained in the final harvest.

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