Search claims · PlantClaims

Intervention effectobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

Yield did not significantly decrease through the eight-day irrigation interval.

Taxon: RICEOryza sativat0
Treatment: 8We0
Outcome: yielde0
Direction: decreasee0
Comparator: continuous flooding (W)e1

Verbatim

e0
“without any significant decrease in yield up to 8W”
✓ located verbatim in the source · abstract, characters 905–955

t0
“RICE”
✓ located verbatim in the source · title, characters 64–68

e1
“continuous flooding (W) without any significant decrease”
✓ located verbatim in the source · abstract, characters 881–937

Title

IRRIGATION REGIME AND POTASSIUM LEVELS EFFECTS ON YIELD OF SOME RICE GENOTYPES, WATER USE EFFICIENCY (WUE) AND ECONOMIC RETURNS

Howida El-Habet Journal of Plant Production 2014. doi:10.21608/jpp.2014.53654

Other claims from this paper (17)

Observation Giza179 had higher grain yield and yield attributes than GZ7112 under continuous flooding.
Intervention effect Twelve-day irrigation significantly reduced rice yield.
Intervention effect At 4W, Giza179 saved 10.36% and 8.37% irrigation water in 2012 and 2013.
Intervention effect At 4W, GZ7112 saved 10.50% and 10.36% irrigation water.
Intervention effect At 8W, Giza179 saved 17.81% and 23.66% water.
Intervention effect At 8W, GZ7112 saved 13.33% and 18.44% water.
Intervention effect At 12W, irrigation water savings were 23.91% and 27.90% across the two seasons.
Intervention effect At 12W, grain yield was reduced about 22.42% and 24.71% in 2012 and 2013.
Observation Giza179 yielded 9.70 t/ha across both seasons.
Observation GZ7112 yielded 9.33 t/ha across both seasons.
Observation Giza179 saved 20.73% water across both seasons.
Observation GZ7112 saved 15.88% water across both seasons.
Observation Giza179 water use efficiency was 0.90 kg/m3.
Observation GZ7112 water use efficiency was 0.81 kg/m3.
Observation With Giza179 at 8W, total water input was reported as 11260.88 and 10006.80 m3/ha.
Intervention effect Potassium application up to 108 K2O/ha significantly increased rice yield.
Intervention effect Potassium application up to 108 K2O/ha mitigated water stress and increased WUE and water savings.

Observationobservedoriginal resultnegativemeasured

Claim · model-written summary

The decrease in annual growth rate of rice area and yield resulted in a decrease in the annual growth rate of rice production.

Taxon: riceOryza sativae0
Outcome: annual growth rate of rice productione7
Direction: decreasee7
Qualifier: The decrease of annual growth rate of rice area and yielde7

Verbatim

e0
“An approach to increase rice yield and production was discussed”
✓ located verbatim in the source · abstract, characters 10–73

e7
“The decrease of annual growth rate of rice area and yield resulted in the decrease of annual growth rate of rice production”
✓ located verbatim in the source · abstract, characters 1070–1193

Title

Analysis of status and constraints of rice production in the world.

Defeng Zhu; Cheng ShiHua; Zhang Yu-ping; et al. Zhongguo nongye Kexue 2010

Other claims from this paper (19)

Observation Rice planting area increased by 32% from 1961 to 2006.
Observation Rice yield increased 1.21 times, mainly due to semi-dwarf varieties and hybrids.
Observation Rice production increased 1.92 times.
Observation Planting area increase contributed 27% of the increase of rice production.
Observation Yield increase contributed 73% of the increase of rice production.
Observation The annual growth rate of rice planting area decreased significantly since the 1960s.
Observation The annual growth rate of rice yield was 2.58% in the 1980s.
Observation The annual growth rate of rice yield was 0.98% in the 1990s.
Observation The annual growth rate of rice yield was 1.16% after 2000.
Observation The annual growth rate of rice production was 2.73% in the 1980s.
Observation The annual growth rate of rice production was 1.48% in the 1990s.
Observation The annual growth rate of rice production was 0.88% after 2000.
Observation More frequent pest damage and natural disasters limit rice production.
Observation Low contribution of rice production technology to yield increase limits rice production.
Observation Yield is declining in the multiple-cropping system, limiting rice production.
Observation Low production profit limits rice production.
Recommendation The authors recommend breeding of high-yielding varieties and hybrids and practice of new Africa rice varieties in Africa to increase global rice yield.
Recommendation The authors recommend integrated rice management technology to reduce the yield gap.
Recommendation The authors recommend mechanized rice production technology and enhanced policy support for rice production.

Intervention effectobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

High-rate controlled-release urea (HN) did not significantly decrease rice yield compared with conventional urea (FP).

Taxon: riceOryza sativae0
Treatment: HNe0
Outcome: rice yielde0
Direction: did not decreasee0
Comparator: FPe0

Verbatim

e0
“As compared with FP, HN did not decrease rice yield significantly”
✓ located verbatim in the source · abstract, characters 370–435

Title

[Effects of seeding-box total fertilization on rice yield and nitrogen loss].

Ru-Liang Liu; You-Hong Li; Ai-Ping Zhang; et al. PubMed 2012

Other claims from this paper (7)

Intervention effect Medium-rate controlled-release urea (MN) increased the two-year average nitrogen use efficiency of rice by 26.2% compared with FP.
Intervention effect High-rate controlled-release urea (HN) increased the two-year average nitrogen use efficiency of rice by 20.7% compared with FP.
Intervention effect Total N concentration in surface water peaked 7-9 days after urea application in MN and HN, versus 1-3 days in FP.
Intervention effect Total N concentration in surface water in MN and HN was significantly lower than in FP throughout the rice growth period.
Intervention effect Nitrogen leaching loss occurred mainly at tillering stage in FP but was delayed to the tillering-flowering stage in MN and HN.
Observation In all treatments NO3(-)-N loss accounted for 59.7%-64.2% of the total N loss.
Intervention effect HN decreased total N leaching loss by 51.8% compared with FP.

Observationobservedoriginal resultnegativemeasured

Claim · model-written summary

Local tarom was the most cold-sensitive variety, with 29% yield decrease.

Taxon: riceOryza sativat0
Material: local tarom varietye0
Outcome: yield decreasee0
Direction: moste0
Value: 29%e0

Verbatim

e0
“the most sensitive one with most percentage of yield decrease (29%) was local tarom variety.”
✓ located verbatim in the source · abstract, characters 1547–1639

t0
“Rice Cultivars”
✓ located verbatim in the source · title, characters 62–76

Title

Temperature Effect on Yield and Yield Components of Different Rice Cultivars in Flowering Stage

R. Ghadirnezhad; A. Fallah International Journal of Agronomy 2014. doi:10.1155/2014/846707

Other claims from this paper (5)

Intervention effect Low temperature significantly affected panicle number.
Intervention effect Low temperature significantly affected panicle length.
Intervention effect Low temperature significantly affected numbers of full, empty and total grains.
Intervention effect Low temperature significantly reduced rice yield.
Observation Shirudi was the most cold-tolerant variety, with 19% yield decrease.

Associationobservedoriginal resultnegativesimulated

Claim · model-written summary

Yield decrease was associated with shorter growth duration together with increasing temperature.

Taxon: riceOryza sativae0
Treatment: increasing temperaturee7
Outcome: Decrease in yielde7
Direction: Decreasee7
Qualifier: lowering growth duratione7

Verbatim

e0
“impact of climate change on rice production”
✓ located verbatim in the source · abstract, characters 529–572

e7
“Decrease in yield were mainly associated with lowering growth duration along with increasing temperature”
✓ located verbatim in the source · abstract, characters 2152–2256

Title

Modeling the sensitivity of CERES-Rice model: An experience of Nepal

A Lamsal; LP Amgai; A Giri Agronomy Journal of Nepal 2013. doi:10.3126/ajn.v3i0.8982

Other claims from this paper (15)

Method / resource The CSM-CERES-Rice model had an RMSE of 747.35 kg/ha for grain yield.
Method / resource The CSM-CERES-Rice model had a D-stat of 0.793 for grain yield.
Method / resource The CSM-CERES-Rice model had an RMSE of 1.106 days for anthesis.
Method / resource The CSM-CERES-Rice model had an RMSE of 2.58 days for maturity.
Method / resource The CSM-CERES-Rice model had a D-stat of 0.99 for anthesis and maturity.
Method / resource The CSM-CERES-Rice model had an RMSE of 0.004 kg/ha for individual grain weight.
Method / resource The CSM-CERES-Rice model had a D-stat of 0.633 for individual grain weight.
Intervention effect Under decreasing climatic scenarios, simulated Prithivi yield increased by 62%.
Intervention effect Under decreasing climatic scenarios, simulated Masuli yield increased by 41%.
Intervention effect Under decreasing climatic scenarios, simulated Sunaulo Sugandha yield increased by 42%.
Intervention effect Under increasing climate change scenarios, simulated Prithivi yield declined by 80%.
Intervention effect Under increasing climate change scenarios, simulated Masuli yield declined by 46%.
Intervention effect Under increasing climate change scenarios, simulated Sunaulo Sugandha yield declined by 40%.
Association Temperature was the most sensitive factor for simulated rice yield potential compared with other factors.
Association Hybrid rice showed more vulnerability to climate change than the other cultivars.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Salt stress caused a linear decrease in paddy yield.

Taxon: RiceOryza sativat0
Treatment: Salt stresse0
Outcome: paddy yielde0
Direction: decreasee0

Not reportedComparator

Verbatim

t0
“Rice (Oryza sativa L.) Cultivars”
✓ located verbatim in the source · title, characters 78–110

e0
“Salt stress induced a linear decrease in biological and paddy yield and total plant biomass”
✓ located verbatim in the source · abstract, characters 597–688

Title

Consequence of Salinity on Biological Yield, Grain Yield and Harvest Index in Rice (Oryza sativa L.) Cultivars

Yogesh Mishra; D. K. Dwivedi; Pramila Pandey Environment and Ecology 2014

Other claims from this paper (14)

Intervention effect Salinity did not affect tiller number in rice.
Intervention effect Salinity significantly affected flag leaf area during grain filling.
Association Grain yield per plant had a highly significant positive genotypic correlation with biological yield.
Association Grain yield per plant had a highly significant positive genotypic correlation with harvest index.
Association Grain yield per plant had a highly significant positive phenotypic correlation with harvest index.
Association Grain yield per plant had a highly significant positive phenotypic correlation with biological yield.
Intervention effect Salt stress caused a linear decrease in biological yield.
Intervention effect Salt stress caused a linear decrease in total plant biomass.
Association Harvest index followed a second degree equation under salt stress.
Association Harvest index had the highest positive direct phenotypic effect on grain yield per plant.
Association Grains per panicle had the highest positive direct genotypic effect on grain yield per plant.
Observation Rice showed moderate resistance to salinity.
Observation Rice showed a great degree of genotypic variation for salinity response.
Recommendation The authors consider development of varieties with enhanced salt tolerance possible with appropriate strategies and advanced techniques.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

August 10 transplanting caused a drastic decrease in rice yield.

Taxon: RiceOryza sativat0
Treatment: transplanting on August 10e1
Outcome: rice yielde0
Direction: drastic decreasee0

Not reportedComparator

Verbatim

e0
“causing drastic decrease of rice yield”
✓ located verbatim in the source · abstract, characters 1948–1986

e1
“transplanting on August 10”
✓ located verbatim in the source · abstract, characters 1834–1860

t0
“Rice”
✓ located verbatim in the source · title, characters 91–95

Title

Effects of Pot Raising Seedling in Extremely Late Seasonal Cultivation for the Increase of Rice Production

Bon-Il Ku; Min-Kyu Choi; Shin-Ku Kang; et al. Korean Journal of Crop Science 2012. doi:10.7740/kjcs.2012.57.4.441

Other claims from this paper (10)

Observation Geumobyeo 1 showed little decline in emerged leaves and no premature heading under late transplanting.
Observation Manjongbyeo showed little decline in emerged leaves and no premature heading under late transplanting.
Observation Rice ripening remained relatively good for transplanting through August 5.
Observation July 30 transplanting yielded 853 degrees C accumulated temperature before first frost and adequate ripening.
Intervention effect August 10 transplanting delayed rice heading under low temperature.
Intervention effect August 10 transplanting produced very poor ripening under accumulated temperature below 800 degrees C.
Intervention effect Transplanting pot-raised seedlings increased rice yield.
Observation The pot-seedling yield effect was greater for Geumobyeo 1.
Observation Short growth duration left insufficient panicles to secure rice yield.
Recommendation The authors recommend late-season rice cultivars with suitable growth duration and good low-temperature ripening.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Salt stress caused a linear decrease in biological yield.

Taxon: RiceOryza sativat0
Treatment: Salt stresse0
Outcome: biologicale0
Direction: decreasee0

Not reportedComparator

Verbatim

t0
“Rice (Oryza sativa L.) Cultivars”
✓ located verbatim in the source · title, characters 78–110

e0
“Salt stress induced a linear decrease in biological and paddy yield and total plant biomass”
✓ located verbatim in the source · abstract, characters 597–688

Title

Consequence of Salinity on Biological Yield, Grain Yield and Harvest Index in Rice (Oryza sativa L.) Cultivars

Yogesh Mishra; D. K. Dwivedi; Pramila Pandey Environment and Ecology 2014

Other claims from this paper (14)

Intervention effect Salinity did not affect tiller number in rice.
Intervention effect Salinity significantly affected flag leaf area during grain filling.
Association Grain yield per plant had a highly significant positive genotypic correlation with biological yield.
Association Grain yield per plant had a highly significant positive genotypic correlation with harvest index.
Association Grain yield per plant had a highly significant positive phenotypic correlation with harvest index.
Association Grain yield per plant had a highly significant positive phenotypic correlation with biological yield.
Intervention effect Salt stress caused a linear decrease in paddy yield.
Intervention effect Salt stress caused a linear decrease in total plant biomass.
Association Harvest index followed a second degree equation under salt stress.
Association Harvest index had the highest positive direct phenotypic effect on grain yield per plant.
Association Grains per panicle had the highest positive direct genotypic effect on grain yield per plant.
Observation Rice showed moderate resistance to salinity.
Observation Rice showed a great degree of genotypic variation for salinity response.
Recommendation The authors consider development of varieties with enhanced salt tolerance possible with appropriate strategies and advanced techniques.

Associationobservedoriginal resultnegativeprojected

Claim · model-written summary

Minimum temperature may decrease rice yield by 1.5% to 1.8% / ha.

Taxon: riceOryza sativae0
Treatment: Minimum temperaturee0
Outcome: yield of ricee0
Direction: decreasee0
Value: 1.5% to 1.8% / hae0

Verbatim

e0
“Minimum temperature may decrease the yield of rice by 1.5% to 1.8% / ha”
✓ located verbatim in the source · abstract, characters 217–288

Title

Impact assessment of climate change on rice yield using simulation model

Ashish Kumar Singh; AK Singh; AN Mishra Journal of Pharmacognosy and Phytochemistry 2017

Other claims from this paper (10)

Associationobservedoriginal resultnegativemeasured

Claim · model-written summary

Grain yield decrease correlated with high stem diameter and infestation.

Taxon: riceOryza sativat0
Organ / stage: stem diametere0
Interactor: Chilo suppressalis WalkerChilo suppressalise1pest
Outcome: grain yielde0
Direction: decreasee0

Verbatim

e0
“the decrease of grain yield was correlated with high stem diameter, high infestation”
✓ located verbatim in the source · abstract, characters 848–932

e1
“striped stem borer (Chilo suppressalis Walker)”
✓ located verbatim in the source · abstract, characters 4–50

t0
“rice”
✓ located verbatim in the source · title, characters 50–54

Title

Evaluation of resistance to striped stem borer in rice.

Seydeh Zahra Hosseini; Nadali Babaeian-Jelodar; Nadali Bagheri 2010

Other claims from this paper (6)

Observation Rice lines varied in height, tiller number, leaf dimensions and stem diameter.
Association Infestation percentage significantly correlated with leaf width and stem diameter.
Association White head significantly correlated with plant height, stem diameter and infestation percentage.
Observation Four named rice lines had under 10% infestation and 0% white head.
Observation The four resistant rice lines had 0% white head.
Recommendation The authors suggest these rice lines as resistance sources for breeding in Iran.

“yield decrease”

Claim types

Direction of the findings

Over time

Claim type

Research area

Polarity

Statistics