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“yield decrease”

19,998 matches

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1950 ’60 ’70 ’80 ’90 2000 ’10 ’20

plus 31 earlier · 1910s–1940s

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Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Herbicide treatments reduced seeds by 13–18% relative to mechanically weed-controlled plots.

Taxon: chickpeasCicer arietinume1
Treatment: herbicide treatmentse4
Outcome: number of seedse4
Direction: lowerinferrede4
Value: 13–18%e4
Comparator: mechanically weed-controlled plotse4
Setting: Szeged-Öthalom experimental areae1

Verbatim

e1
“effect of weed technologies on chickpeas (Cicer arietium L.) was set up in 2018 and 2019 at the Szeged-Öthalom experimental area”
✓ located verbatim in the source · abstract, characters 28–156

e4
“In the case of herbicide treatments, the decrease in yield elements was much smaller: the number of plants per unit area by 1%, the number of shoots by 3–10%, the number of pods by 5–12%, the number of seeds by 13–18%, the seed weight was by 1–5% less than on mechanically weed-controlled plots”
✓ located verbatim in the source · abstract, characters 1678–1972

Title

Effect of weed control technologies on chickpeas (Cicer arietinum L.) and weeds

I. Kristó; M. Tar; V. J. Vojnich; et al. Advanced Agritechnologies 2019. doi:10.47414/na.7.2019.204790

Other claims from this paper (15)

Intervention effect Plots that did not control weeds had 15% fewer shoots per unit area than weed-free control plots.
Intervention effect Plots that did not control weeds had 45% fewer pods than weed-free control plots.
Intervention effect Plots that did not control weeds had 58% fewer seeds than weed-free control plots.
Intervention effect Plots that did not control weeds had 49% lower seed weight than weed-free control plots.
Intervention effect Plots treated only with pre-emergence herbicide had 3% fewer shoots per unit area than weed-free plots.
Intervention effect Plots treated only with pre-emergence herbicide had 23% fewer pods than weed-free plots.
Intervention effect Plots treated only with pre-emergence herbicide had 34% fewer seeds than weed-free plots.
Intervention effect Plots treated only with pre-emergence herbicide had 35% lower seed weight than weed-free plots.
Intervention effect Herbicide treatments reduced plants per unit area by 1% relative to mechanically weed-controlled plots.
Intervention effect Herbicide treatments reduced shoots by 3–10% relative to mechanically weed-controlled plots.
Intervention effect Herbicide treatments reduced pods by 5–12% relative to mechanically weed-controlled plots.
Intervention effect Herbicide treatments reduced seed weight by 1–5% relative to mechanically weed-controlled plots.
Association Later sowing of chickpeas favored warm-loving weeds.
Intervention effect Later-sown chickpea stock in 2018 gave higher yields than earlier-sown plots in 2019.
Association Yield is determined much more by field factors developed during the growing season than by the calendar period.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Herbicide treatments reduced seed weight by 1–5% relative to mechanically weed-controlled plots.

Taxon: chickpeasCicer arietinume1
Treatment: herbicide treatmentse4
Outcome: seed weighte4
Direction: lowerinferrede4
Value: 1–5%e4
Comparator: mechanically weed-controlled plotse4
Setting: Szeged-Öthalom experimental areae1

Verbatim

e1
“effect of weed technologies on chickpeas (Cicer arietium L.) was set up in 2018 and 2019 at the Szeged-Öthalom experimental area”
✓ located verbatim in the source · abstract, characters 28–156

e4
“In the case of herbicide treatments, the decrease in yield elements was much smaller: the number of plants per unit area by 1%, the number of shoots by 3–10%, the number of pods by 5–12%, the number of seeds by 13–18%, the seed weight was by 1–5% less than on mechanically weed-controlled plots”
✓ located verbatim in the source · abstract, characters 1678–1972

Title

Effect of weed control technologies on chickpeas (Cicer arietinum L.) and weeds

I. Kristó; M. Tar; V. J. Vojnich; et al. Advanced Agritechnologies 2019. doi:10.47414/na.7.2019.204790

Other claims from this paper (15)

Intervention effect Plots that did not control weeds had 15% fewer shoots per unit area than weed-free control plots.
Intervention effect Plots that did not control weeds had 45% fewer pods than weed-free control plots.
Intervention effect Plots that did not control weeds had 58% fewer seeds than weed-free control plots.
Intervention effect Plots that did not control weeds had 49% lower seed weight than weed-free control plots.
Intervention effect Plots treated only with pre-emergence herbicide had 3% fewer shoots per unit area than weed-free plots.
Intervention effect Plots treated only with pre-emergence herbicide had 23% fewer pods than weed-free plots.
Intervention effect Plots treated only with pre-emergence herbicide had 34% fewer seeds than weed-free plots.
Intervention effect Plots treated only with pre-emergence herbicide had 35% lower seed weight than weed-free plots.
Intervention effect Herbicide treatments reduced plants per unit area by 1% relative to mechanically weed-controlled plots.
Intervention effect Herbicide treatments reduced shoots by 3–10% relative to mechanically weed-controlled plots.
Intervention effect Herbicide treatments reduced pods by 5–12% relative to mechanically weed-controlled plots.
Intervention effect Herbicide treatments reduced seeds by 13–18% relative to mechanically weed-controlled plots.
Association Later sowing of chickpeas favored warm-loving weeds.
Intervention effect Later-sown chickpea stock in 2018 gave higher yields than earlier-sown plots in 2019.
Association Yield is determined much more by field factors developed during the growing season than by the calendar period.

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

The same nitrite concentration promoted the growth of Italian ryegrass.

Taxon: Italian ryegrassLolium multiflorume0
Treatment: Nitrite nitrogen in culture solutione1
Outcome: growthe2
Direction: promotede2
Value: 2 ppme1

Not reportedComparator

Verbatim

e0
“Even Italian ryegrass, which is moderately tolerant to the acidity of soil, the yield showed decrease, when the pH in the culture solution was lowered to 4.3”
✓ located verbatim in the source · abstract, characters 213–370

e1
“Nitrite nitrogen in culture solution was injurious to the growth of milk vetch at the low concentration of 2 ppm”
✓ located verbatim in the source · abstract, characters 3575–3687

e2
“However the growth of Italyan ryegrass was promoted at the same concentration”
✓ located verbatim in the source · abstract, characters 3689–3766

Title

Studies on the Relation between the Tolerance of Crops to Soil Acidity and That to Low pH : (15) The effects of aluminum, hydrogen ion, lime, magnecium, nitrate and nitrite of varying concentrations on the growth of Italian ryegrass and milk vetch.

Shugo CHAMURA Japanese Journal of Crop Science 1967. doi:10.1626/jcs.36.4_361

Other claims from this paper (19)

Intervention effect At pH 4.3 the yield of Italian ryegrass decreased.
Intervention effect At pH 4.3 the calcium and phosphorus percentages of Italian ryegrass dry weight were suppressed.
Intervention effect At pH 4.3 the growth of milk vetch decreased markedly.
Intervention effect At pH 4.3 the calcium and potassium percentages of milk vetch were suppressed.
Intervention effect Raising the pH of milk vetch culture from 5.3 to 6.3 decreased its yield; the inorganic matter percentage was also decreased.
Intervention effect Aluminum at 0.5 ppm inhibited the growth of milk vetch.
Intervention effect The same aluminum concentration promoted the growth of Italian ryegrass.
Intervention effect Aluminum at 5 ppm severely suppressed the dry weight percentage of phosphorus in both forage crops and strongly reduced their growth.
Observation The dry weight percentages of calcium, potassium and magnesium were suppressed in milk vetch.
Intervention effect A low concentration of both lime and magnesium was highly injurious to plant growth.
Observation The optimum calcium concentration in the culture solution was higher for milk vetch than for Italian ryegrass.
Intervention effect Increasing lime in the nutrient solution increased calcium percentage in the top of the plants.
Intervention effect Raising lime from low to standard level increased potassium percentage.
Intervention effect Lowering lime and magnesium together greatly increased the potassium percentage of Italian ryegrass.
Observation The optimum magnesium concentration in the culture solution was lower for milk vetch than for Italian ryegrass.
Intervention effect At low magnesium concentration, calcium percentage of milk vetch increased.
Intervention effect Raising magnesium from standard to high level decreased phosphorus and potassium percentages.
Intervention effect Increasing nitrate decreased the yield of milk vetch markedly, with a decrease in leaf-blade starch.
Intervention effect Nitrite nitrogen at 2 ppm was injurious to the growth of milk vetch.

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Reducing N by 28% improved the available filled ratio of sink in Huayou 8305 relative to conventional N.

Taxon: riceOryza sativae1
Material: Huayou 8305e4
Treatment: Reduction of N by 28%e4
Outcome: available filled ratio of sinke4
Direction: improvede4
Comparator: conventional Ne1

Verbatim

e1
“Compared by conventional N,reduction of N by 28% would maintain or promote the rice source and sink coordination,which resulted in no significant decrease in yield”
✓ located verbatim in the source · abstract, characters 267–430

e4
“Reduction of N by 28% improved sink capacity and ratio of spikelets No.and leaf area in Yuejingsimiao 2 and Guixiangzhan,improved available filled ratio of sink in Huayou 8305,while there was no significant difference in Tianyou 998”
✓ located verbatim in the source · abstract, characters 643–875

Title

Effects of Reduced Nitrogen Fertilizer on the Source and Sink Characteristics of Early /Late Season Rice in South China and Their Mechanism

MO Zhao-we 2013

Other claims from this paper (9)

Intervention effect Reducing N by 28% relative to conventional N caused no significant decrease in rice yield.
Intervention effect Reducing N by 28% would maintain or promote rice source and sink coordination relative to conventional N.
Intervention effect Reducing N by 28% increased grain yield of Yuejingsimiao 2 by 11.99% relative to conventional N.
Intervention effect Reducing N by 28% increased grain yield of Guixiangzhan by 5.51% relative to conventional N.
Intervention effect Reducing N by 28% increased grain yield of Huayou 8305 by 6.46% relative to conventional N.
Mechanism The yield increase under 28% N reduction is attributed to enhanced photosynthesis or sheath and stem transfer ability in rice.
Intervention effect Reducing N by 28% improved sink capacity, spikelet ratio and leaf area of Yuejingsimiao 2 relative to conventional N.
Intervention effect Reducing N by 28% improved sink capacity, spikelet ratio and leaf area of Guixiangzhan relative to conventional N.
Intervention effect Reducing N by 28% produced no significant difference in sink and source characteristics of Tianyou 998.

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

The treatment changed berry total sugars relative to control.

Taxon: GrapevinesVitist0
Treatment: Same treatmentse0
Outcome: total sugarse0
Direction: increasee0
Value: 18.43 & 19.20 %e0
Comparator: controle0

Verbatim

e0
“Same treatments gave higher increase in the chemical characteristics of berries as SSC%, total sugars and total anthocyanin content in berry skin (20.17 & 21.00%), (18.43 & 19.20 %) and (78.98 & 79.82 mg/100g FW), while it gave the lowest decrease in acidity% (0.26 & 0.24 %) as compared with that of control (18.27 & 18.17 %), (13.83 & 14.20 %), (28.71 & 18.17 mg/100g FW) and (0.48 & 0.46 %), in 2014 and 2015 seasons,…” Show full quote
✓ located verbatim in the source · abstract, characters 1438–1872

t0
“Grapevines”
✓ located verbatim in the source · title, characters 62–72

Title

Effect of Fulvic Acid and Some Nutrient Elements on King Ruby Grapevines Growth, Yield and Chemical Properties of Berries.

M. Mostafa; M. EL-Boray; EL. El-Baz; et al. Journal of Plant Production 2017. doi:10.21608/jpp.2017.39630

Other claims from this paper (9)

Intervention effect Fulvic acid, Mg and K increased bud burst relative to control in 2014 and 2015.
Intervention effect Fulvic acid, Mg and K increased fertility relative to control in 2014 and 2015.
Intervention effect Fulvic acid, Mg and K increased shoot length relative to control.
Intervention effect Fulvic acid, Mg and K increased leaf surface area relative to control.
Intervention effect Fulvic acid, Mg and K increased total chlorophyll content relative to control.
Intervention effect The treatment increased yield per vine relative to control.
Intervention effect The treatment changed berry SSC% relative to control.
Intervention effect The treatment changed berry total anthocyanin content in berry skin relative to control.
Intervention effect The treatment changed berry acidity% relative to control.

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Selection decreased days to mid-silk by 0.8% per cycle at 80 kg N ha-1.

Taxon: maizeZea mayst0
Treatment: selectione1
Outcome: days to mid-silke1
Direction: decreaseinferrede0
Value: -0.8e0
Qualifier: 80 kg N ha-1e0

Not reportedComparator

Verbatim

t0
“maize”
✓ located verbatim in the source · title, characters 36–41

e0
“2.1, -0.8, -1.5, -3.5% at 80 kg N ha-1”
✓ located verbatim in the source · abstract, characters 1345–1383

e1
“Least square estimates of progress per cycle of selection for grain yield, days to mid-silk, plant height, and lodging were 1.6, -0.6, -1.5, -1.1% at zero fertilizer N; 2.1, -0.8, -1.5, -3.5% at 80 kg N ha-1 and 1.8, -0.7, -1.4, -2.8% at 160 kg N ha-1, respectively”
✓ located verbatim in the source · abstract, characters 1176–1441

Title

Progress from selection in la posta maize population evaluated underthree nitrogen fertilizer levels

TSpace 1998

Other claims from this paper (19)

Intervention effect Mean grain yield rose across the three nitrogen rates from 3.0 to 4.7 to 5.2 Mg ha-1.
Intervention effect As nitrogen increased, grain yield, plant height and lodging increased.
Intervention effect Ear rating increased with fertilizer nitrogen.
Intervention effect Days to mid-silk decreased with increasing fertilizer nitrogen.
Intervention effect Grain moisture and ears per plant did not change as fertilizer nitrogen increased.
Observation The greatest response to applied nitrogen across traits was at 80 kg N ha-1.
Observation Nitrogen response patterns were similar across selection cycles.
Intervention effect Selection increased grain yield per cycle by 1.6% without nitrogen fertilizer.
Intervention effect Selection advanced mid-silk by 0.6% per cycle without nitrogen fertilizer.
Intervention effect Selection reduced plant height by 1.5% per cycle without nitrogen fertilizer.
Intervention effect Selection reduced lodging by 1.1% per cycle without nitrogen fertilizer.
Intervention effect Selection increased grain yield by 2.1% per cycle at 80 kg N ha-1.
Intervention effect Selection decreased plant height by 1.5% per cycle at 80 kg N ha-1.
Intervention effect Selection decreased lodging by 3.5% per cycle at 80 kg N ha-1.
Intervention effect At 160 kg N ha-1, selection increased grain yield by 1.8% per cycle.
Intervention effect At 160 kg N ha-1, selection decreased days to mid-silk by 0.7% per cycle.
Intervention effect At 160 kg N ha-1, selection decreased plant height by 1.4% per cycle.
Intervention effect At 160 kg N ha-1, selection decreased lodging by 2.8% per cycle.
Observation Recurrent selection had little effect on the population’s nitrogen fertilizer response.

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

At 160 kg N ha-1, selection decreased days to mid-silk by 0.7% per cycle.

Taxon: maizeZea mayst0
Treatment: selectione1
Outcome: days to mid-silke1
Direction: decreaseinferrede0
Value: -0.7e0
Qualifier: 160 kg N ha-1e0

Not reportedComparator

Verbatim

t0
“maize”
✓ located verbatim in the source · title, characters 36–41

e0
“1.8, -0.7, -1.4, -2.8% at 160 kg N ha-1”
✓ located verbatim in the source · abstract, characters 1388–1427

e1
“Least square estimates of progress per cycle of selection for grain yield, days to mid-silk, plant height, and lodging were 1.6, -0.6, -1.5, -1.1% at zero fertilizer N; 2.1, -0.8, -1.5, -3.5% at 80 kg N ha-1 and 1.8, -0.7, -1.4, -2.8% at 160 kg N ha-1, respectively”
✓ located verbatim in the source · abstract, characters 1176–1441

Title

Progress from selection in la posta maize population evaluated underthree nitrogen fertilizer levels

TSpace 1998

Other claims from this paper (19)

Intervention effect Mean grain yield rose across the three nitrogen rates from 3.0 to 4.7 to 5.2 Mg ha-1.
Intervention effect As nitrogen increased, grain yield, plant height and lodging increased.
Intervention effect Ear rating increased with fertilizer nitrogen.
Intervention effect Days to mid-silk decreased with increasing fertilizer nitrogen.
Intervention effect Grain moisture and ears per plant did not change as fertilizer nitrogen increased.
Observation The greatest response to applied nitrogen across traits was at 80 kg N ha-1.
Observation Nitrogen response patterns were similar across selection cycles.
Intervention effect Selection increased grain yield per cycle by 1.6% without nitrogen fertilizer.
Intervention effect Selection advanced mid-silk by 0.6% per cycle without nitrogen fertilizer.
Intervention effect Selection reduced plant height by 1.5% per cycle without nitrogen fertilizer.
Intervention effect Selection reduced lodging by 1.1% per cycle without nitrogen fertilizer.
Intervention effect Selection increased grain yield by 2.1% per cycle at 80 kg N ha-1.
Intervention effect Selection decreased days to mid-silk by 0.8% per cycle at 80 kg N ha-1.
Intervention effect Selection decreased plant height by 1.5% per cycle at 80 kg N ha-1.
Intervention effect Selection decreased lodging by 3.5% per cycle at 80 kg N ha-1.
Intervention effect At 160 kg N ha-1, selection increased grain yield by 1.8% per cycle.
Intervention effect At 160 kg N ha-1, selection decreased plant height by 1.4% per cycle.
Intervention effect At 160 kg N ha-1, selection decreased lodging by 2.8% per cycle.
Observation Recurrent selection had little effect on the population’s nitrogen fertilizer response.

Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Treatments significantly increased soil NPK and Mg relative to pretrial soil.

Taxon: Amaranthus hybridusAmaranthus hybridust0
Treatment: all the treatmentse0
Outcome: NPK and Mge0
Direction: increasee0
Comparator: pre-trial soilt1

Verbatim

e0
“all the treatments showed a significant increase in the soil pH, organic carbon, organic matter, NPK and Mg”
✓ located verbatim in the source · abstract, characters 890–997

t0
“Amaranthus Hybridus”
✓ located verbatim in the source · title, characters 40–59

t1
“all the treatments showed a significant increase in the soil pH, organic carbon, organic matter, NPK and Mg and a slight decrease in Ca and Na when compared to the pre-trial soil indicating an increase in residual soil nutrient status. Nutrient content N, P, K, plant height (51.13cm), number of leaves (67.80), stem girth (5.61cm), leaf area (194.87cm2) and yield (7.51 t/ha) were significantly higher in plots treated …” Show full quote
✓ located verbatim in the source · abstract, characters 890–1544

Title

Vegetative Growth and Yield Response of Amaranthus Hybridus to Mycorrhizal Fungi (glomus Mosseae) Inoculation, Organic and Micronutrient Fertilizer Application

Edosa, Ifeyinwa Valerie1; Ogbemudia; Imasuen E. E; et al. Nigerian Journal of Soil Science 2020. doi:10.67042/njss.2020.qkwnfqim

Other claims from this paper (17)

Observation Soil texture remained loamy sand after treatments.
Intervention effect Micronutrient application had no significant effect on treated plots.
Intervention effect Treatments significantly increased soil pH, organic carbon and organic matter compared with pretrial soil.
Intervention effect Treatments slightly decreased soil Ca and Na.
Intervention effect PM produced significantly higher plant N, P and K content than the other treatments.
Intervention effect PM produced plant height of 51.13cm, significantly higher than other treatments.
Intervention effect PM produced 67.80 leaves, significantly higher than other treatments.
Intervention effect PM produced stem girth of 5.61cm, significantly higher than other treatments.
Intervention effect PM produced leaf area of 194.87cm2, significantly higher than other treatments.
Intervention effect PM produced yield of 7.51 t/ha, significantly higher than other treatments.
Observation Control plant height was 19.13 cm.
Observation Control plants had 26.00 leaves.
Observation Control stem girth was 2.80 cm.
Observation Control leaf area was 57.76 cm2.
Observation Control yield was 0.80 t/ha.
Intervention effect PM and PMF had significantly more spores than PCP and control.
Intervention effect PM and PMF had significantly more root arbuscules, vesicles and hyphae than PCP and control.

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.

Observationobservedoriginal resultnegativemeasured

Claim · model-written summary

Reed canarygrass crude protein in first-cut forage decreased by 0.39% per day.

Taxon: reed canarygrasse0
Outcome: crude protein (CP) in first-cut foragee1
Direction: decreasese1
Value: 0.39e1
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 Tall fescue crude protein in first-cut forage decreased by 0.40% 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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“yield decrease”

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