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“yield decrease”

3,173 matches

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plus 31 earlier · 1910s–1940s

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Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Repeated cutting tended to gradually decrease red clover biomass yield.

Taxon: red cloverTrifolium pratensee0
Treatment: cut repeatedlye0
Outcome: biomass yielde0
Direction: decrease graduallye0

Not reportedComparator

Verbatim

e0
“After studied characteristics of regrowing red clover, the results indicated that when it was cut repeatedly in the same growth period, red clover reg rowth showed a tendency to decrease gradually in the time when reached the same growth period, plant height, weight and biomass yield, respectively.”
✓ located verbatim in the source · abstract, characters 0–299

Title

A study on biological characteristics of regrowing red clover

Fan JiangWen Caoye kexue 2001

Other claims from this paper (3)

Intervention effect Repeated cutting tended to gradually decrease red clover time when reached the same growth period.
Intervention effect Repeated cutting tended to gradually decrease red clover plant height.
Intervention effect Repeated cutting tended to gradually decrease red clover weight.

Associationobservedoriginal resultmeasured

Claim · model-written summary

Peanut yields tended to decrease as land elevation decreased.

Taxon: PEANUTArachis hypogaeat0
Outcome: Yieldse4
Direction: decreasee4
Setting: land elevatione4

Verbatim

t0
“IMPROVING PEANUT YIELD AND GRADE”
✓ located verbatim in the source · title, characters 0–32

e4
“Yields tended to slightly decrease as the land elevation decreased for both irrigated and non-irrigated zones”
✓ located verbatim in the source · abstract, characters 1227–1336

Title

IMPROVING PEANUT YIELD AND GRADE WITH SURFACE DRIP IRRIGATION IN UNDULATING FIELDS

H. Zhu; M. C. Lamb; C. L. Butts; et al. Transactions of the ASAE 2004. doi:10.13031/2013.15875

Other claims from this paper (8)

Intervention effect Peanut yields with drip irrigation were 1.4 times those of the non-irrigated treatment.
Intervention effect Yields of peanut did not differ significantly between 0.9 m and 1.8 m drip tape lateral spacings.
Observation Surface drip irrigation gave an irrigation water use efficiency of 10 kg/ha-mm for peanut.
Intervention effect Drip-irrigated peanut produced a greater portion of larger kernels than non-irrigated peanut.
Intervention effect Average TSMK of peanut in the undulating area was 73.7% with drip irrigation and 64.9% without irrigation.
Intervention effect Average gross revenue of peanut was $2,093 per ha with drip irrigation, above $1,253 per ha with no irrigation.
Intervention effect Maximum soil temperature under peanut was lower in the irrigated area than in the non-irrigated area.
Observation Water took about 16 h to move laterally 46 cm under drip irrigation for peanut.

Associationobservedoriginal resultpositivemeasured

Claim · model-written summary

The yield decrease was smaller in grafted plants.

Taxon: MelonCucumis melot0
Material: grafted plantse0
Outcome: Fruit yielde1
Direction: smallere0
Comparator: non-grafted plantse0

Verbatim

e0
“the decrease in grafted plants was smaller than that in non-grafted plants”
✓ located verbatim in the source · abstract, characters 707–781

e1
“Fruit yield was decreased only at a boron concentration of 10 mg·L -1”
✓ located verbatim in the source · abstract, characters 631–700

t0
“Melon Plants”
✓ located verbatim in the source · title, characters 36–48

Title

Response of Grafted and Non-grafted Melon Plants to High Boron and Salinity Levels

Menahem Edelstein; Meni Ben-Hur; Ron Cohen; et al. HortScience 2004. doi:10.21273/hortsci.39.4.873e

Other claims from this paper (7)

Association Boron foliar injury was more severe in non-grafted melons.
Association Leaf boron accumulation was higher in non-grafted melons.
Intervention effect High salinity decreased leaf boron accumulation.
Intervention effect Fruit yield decreased only at 10 mg·L -1 boron.
Association Leaf boron accumulation correlated negatively with fruit yield.
Association Melons grafted on Cucurbita rootstock were more tolerant to high boron.
Mechanism Reduced boron accumulation was offered as the likely explanation for grafted tolerance.

Mechanismhypothesisoriginal resultpositivemeasured

Claim · model-written summary

The decrease in chloride-ion concentration of strawberry plants is presumed to have contributed to the yield increment.

Taxon: strawberryFragaria ×ananassat0
Compound: chloride-ione5
Outcome: yield incremente5
Qualifier: presumablee5

Verbatim

t0
“strawberry (Fragaria ananassa)”
✓ located verbatim in the source · title, characters 55–85

e5
“It is presumable, that the decrease in the chloride-ion concentration of plants contributed to the yield increment”
✓ located verbatim in the source · abstract, characters 1575–1689

Title

Changes of yield amount and some content parameters of strawberry (Fragaria ananassa) as affected by potassium and magnesium fertilization.

Imre Vágó; János Kátai; Marianna Sipos; et al. Analele Universităţii din Oradea, Fascicula: Protecţia Mediului 2008

Other claims from this paper (2)

Observationobservedoriginal resultprojected

Claim · model-written summary

Yield changes ranged down to a 17% decrease under A2.

Taxon: maizeZea mayst0
Treatment: A2e0
Outcome: maize yieldst0
Direction: decreasese0
Value: 17%e0

Verbatim

e0
“decreases of 17% under A2”
✓ located verbatim in the source · abstract, characters 594–619

t0
“maize yields”
✓ located verbatim in the source · title, characters 35–47

Title

Climate change impacts on regional maize yields and possible adaptation measures in Argentina

Maria I. Travasso; Graciela O. Magrin; Gabriel R. Rodriguez; et al. International Journal of Global Warming 2009. doi:10.1504/ijgw.2009.027089

Other claims from this paper (10)

Observation Without CO2 effects, future A2 climate reduces mean maize yield by 9%.
Observation Without CO2 effects, future B2 climate reduces mean maize yield by 6%.
Observation Yield changes ranged up to a 46% increase under B2.
Intervention effect Including CO2 effects increased simulated maize yields by 19% under A2.
Intervention effect Including CO2 effects increased simulated maize yields by 11% under B2.
Observation Negative maize yield impacts could still occur with CO2 effects.
Intervention effect Advancing sowing by 15 to 30 days could increase yields under B2.
Intervention effect Advancing sowing by 15 to 30 days could reduce losses under A2.
Observation Irrigation requirements could increase in the central and northern region.
Observation Irrigation requirements could decrease in the southern region.

Observationobservedreview summarynegativebasis n/a

Claim · model-written summary

Ozone damage reduces crop yield.

Taxon: Cropse0
Treatment: O3e0
Outcome: yielde0
Direction: decreasee0

Verbatim

e0
“Crops damaged by O3 resultes in decrease in yield”
✓ located verbatim in the source · abstract, characters 1071–1120

Title

Review of crops damaged and yield loss by ozone stress

Huang Yi-zong 2003

Other claims from this paper (5)

Observation Elevated ozone exposure produces visible foliar injury in crops.
Association Crop respiration rises with ozone volume fraction.
Association Crop photosynthesis falls significantly as ozone volume fraction rises.
Observation Ozone stress affects leaf membrane protection and stomatal response.
Observation Ozone stress affects nitrogen, saccharide and fat metabolism.

Associationobservedoriginal resultnegativemeasured

Claim · model-written summary

Decrease in flower bud number of the higher-order inflorescences was associated with the flower bud decrease in both years.

Taxon: SoybeanGlycine maxt0
Organ / stage: 高次位花房e5
Outcome: 花蕾数e5
Direction: 減少e5

Verbatim

e5
“これには両年を通して高次位花房の花蕾数減少が関係していた”
✓ located verbatim in the source · abstract, characters 487–515

t0
“Effect of Rising Temperature on Flowering, Pod Set, Dry-Matter Production and Seed Yield in Soybean”
✓ located verbatim in the source · title, characters 0–99

Title

Effect of Rising Temperature on Flowering, Pod Set, Dry-Matter Production and Seed Yield in Soybean

Izumi Oh-e; Reiko Uwagoh; Sayaka Jyo; et al. Japanese Journal of Crop Science 2007. doi:10.1626/jcs.76.433

Other claims from this paper (16)

Intervention effect Total node number per m2 tended to increase under heating in 2002 and 2003.
Intervention effect Flowering period of E2 was 1 day shorter than E1 in 2002.
Intervention effect Flowering period of E4 was 3 days shorter than E1 in 2002.
Intervention effect Flowering period of E4 was 2 days shorter than E1 in 2004.
Intervention effect Total flower bud number per plant decreased by 18.7 to 31.0% under heating compared with E1 in 2002 and 2004.
Intervention effect Total dry matter at late seed enlargement was larger under heating in 2002 and 2003.
Intervention effect Total dry matter at late seed enlargement was smaller in E4 than in E3, with E3 the maximum.
Association In 2004, total dry matter became smaller as temperature rose, and was smallest in E4.
Observation Photosynthetic rate of the uppermost expanded leaf during aging showed no clear difference among sections.
Observation Seed yield of E1 per m2 was highest in 2003 (518.0 g).
Association Seed yield over three years showed a trend similar to total dry matter.
Intervention effect Seed yield was highest in E3 in 2002 and 2003, the moderate and cool years.
Association Seed yield of 2004 decreased as temperature rose and was lowest in E4.
Association Seed yield reduction in the hot year was associated with fewer flower buds and pods.
Association Mean temperature during ripening within 27 to 31 C favoured seed production.
Association Further temperature rise above this range is likely to limit seed yield.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Wider rows caused either no yield decrease or decreases up to 10%.

Outcome: yielde0
Direction: decreasese0
Value: 10%e0

Not reportedTaxonTreatmentComparator

Verbatim

e0
“Either no yield decreases or low decreases only up to 10% were noted.”
✓ located verbatim in the source · abstract, characters 534–603

Title

Improvement of winter wheat baking quality in ecological cultivation by enlargement of row spacing and undersown intercrops.

Konstantin Becker; Günter Leithold Organic Eprints (International Centre for Research in Organic Food Systems, and Research Institute of Organic Agriculture) 2008

Other claims from this paper (3)

Intervention effect Increasing row spacing from 12.5 to 50 cm improved sedimentation value, gluten and crude protein concentration.
Recommendation The authors recommend legumes between the rows to reduce erosion and improve preceding crop value.
Recommendation The authors recommend mulching catch crops to prevent competition.

Intervention effectobservedoriginal resultnegativeprojected

Claim · model-written summary

Maize yield is projected to decrease by 14.6% nationwide under GISS 2080 scenarios.

Taxon: MaizeZea mayse0
Treatment: GISS 2080 scenariose0
Outcome: yieldse0
Direction: decreasee0
Value: 14.6e0
Qualifier: across the whole countrye0

Not reportedComparator

Verbatim

e0
“Maize and sorghum (both C4 crops) yields are expected to decrease by 14.6 and 39.9%, respectively, across the whole country under GISS 2080 scenarios.”
✓ located verbatim in the source · abstract, characters 768–918

Title

Effects of climate change on crop production in Cameroon

M Tingem; M Rivington; G Bellocchi; et al. Climate Research 2008. doi:10.3354/cr00733

Other claims from this paper (8)

Intervention effect Future bambara groundnut yields are projected to increase substantially, depending on scenario and region.
Intervention effect Future soybean yields are projected to increase substantially, depending on scenario and region.
Intervention effect Future groundnut yields are projected to increase substantially, depending on scenario and region.
Intervention effect Future maize yields show little or no change or decreases depending on scenario and region.
Intervention effect Future sorghum yields show little or no change or decreases depending on scenario and region.
Intervention effect Sorghum yield is projected to decrease by 39.9% nationwide under GISS 2080 scenarios.
Observation Temperature patterns have a much more important effect than precipitation in the climate-change results.
Recommendation The authors recommend climate monitoring and information dissemination to farmers to encourage adaptation.

Intervention effectobservedoriginal resultnegativeprojected

Claim · model-written summary

Sorghum yield is projected to decrease by 39.9% nationwide under GISS 2080 scenarios.

Taxon: sorghumSorghume0
Treatment: GISS 2080 scenariose0
Outcome: yieldse0
Direction: decreasee0
Value: 39.9%e0
Qualifier: across the whole countrye0

Not reportedComparator

Verbatim

e0
“Maize and sorghum (both C4 crops) yields are expected to decrease by 14.6 and 39.9%, respectively, across the whole country under GISS 2080 scenarios.”
✓ located verbatim in the source · abstract, characters 768–918

Title

Effects of climate change on crop production in Cameroon

M Tingem; M Rivington; G Bellocchi; et al. Climate Research 2008. doi:10.3354/cr00733

Other claims from this paper (8)

Intervention effect Future bambara groundnut yields are projected to increase substantially, depending on scenario and region.
Intervention effect Future soybean yields are projected to increase substantially, depending on scenario and region.
Intervention effect Future groundnut yields are projected to increase substantially, depending on scenario and region.
Intervention effect Future maize yields show little or no change or decreases depending on scenario and region.
Intervention effect Future sorghum yields show little or no change or decreases depending on scenario and region.
Intervention effect Maize yield is projected to decrease by 14.6% nationwide under GISS 2080 scenarios.
Observation Temperature patterns have a much more important effect than precipitation in the climate-change results.
Recommendation The authors recommend climate monitoring and information dissemination to farmers to encourage adaptation.

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“yield decrease”

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