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“decrease in density”

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Organism: Oryza sativa ✕

Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Increasing planting density decrease Tiller numbers in hill in rice.

Taxon: riceOryza sativat0
Treatment: planting densitye0
Outcome: Tiller numbers in hille0
Direction: decreasee0

Not reportedComparator

Verbatim

e0
“Tiller numbers in hill was decrease with increasing of planting density”
✓ located verbatim in the source · abstract, characters 1021–1092

t0
“rice (Oryza sativa L.)”
✓ located verbatim in the source · title, characters 110–132

Title

Effect of density on morphological characteristics related-lodging on yield and yield components in varieties rice (Oryza sativa L.) in Iran.

H R Mobasser; Reza Yadi; Majid Azizi; et al. http://www.idosi.org/aejaes/jaes5(6)/5.pdf 2009

Other claims from this paper (13)

Observation Langrodi Tarom had least spikeletes number and sterile2 spikeletes number in spike among rice cultivars.
Observation Mahalli Tarom had least tiller number per hill among rice cultivars.
Observation Sang Tarom had panicle number in m among rice cultivars.
Observation Langrodi Tarom had shortest length of first, second2 and third internode among rice cultivars.
Observation Langrodi Tarom had biggest third internode diameter among rice cultivars.
Observation Langrodi Tarom had least plant height among rice cultivars.
Observation Langrodi Tarom had most resistance to lodging among rice cultivars.
Observation Langrodi Tarom had least lodging index for third and fourth internode among rice cultivars.
Intervention effect Increasing planting density increased panicles number in m in rice.
Intervention effect Increasing planting density decreased Internodes number and first, second, third and2 fourth internodes length in rice.
Intervention effect Increasing planting density decreased fourth internode diameter in rice.
Intervention effect Increasing planting density decreased third, fourth internode bending moment in rice.
Intervention effect Rice at density 80 plant / m had minimum lodging index in the third and fourth internodes.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

In Fujiminori, the decrease in grain weight with irregular disposition was more marked at low seeding density than at high seeding density.

Taxon: RiceOryza sativat0
Material: Fujiminorie1
Treatment: low seeding densitye1
Outcome: decrease of grain weighte1
Direction: more markede1
Comparator: high onee1

Verbatim

t0
“Irregular Disposition of Rice Plant”
✓ located verbatim in the source · title, characters 14–49

e1
“In Fujiminori, decrease of grain weight with irregular disposition of plants was more marked in the case of low seeding density than in that of high one”
✓ located verbatim in the source · abstract, characters 1238–1390

Title

The Effect of Irregular Disposition of Rice Plant on Yield in Direct Sowing Culture

Masami HIMEDA; Seiichi IZUMI Japanese Journal of Crop Science 1965. doi:10.1626/jcs.33.399

Other claims from this paper (9)

Intervention effect More irregular disposition of rice plants caused a greater decrease in grain weight per unit area.
Intervention effect The decrease in grain weight with irregular disposition was more remarkable in Fujiminori than in Manryo.
Mechanism Decrease of grain weight was caused by a decrease in the number of panicles per unit area.
Association In Fujiminori, the number of panicles decreased as irregularity in plant disposition increased.
Intervention effect In Fujiminori, grain weight per panicle remained unchanged as irregularity in plant disposition increased.
Association In Manryo, grain weight per panicle increased.
Association In Manryo, the number of panicles decreased.
Intervention effect In plots of cv 30∼100 %, no decrease of grain weight was observed relative to the plot of cv 0 %.
Intervention effect In Manryo, the difference in the effect of irregular disposition on grain weight between spacing densities was not clear.

Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Rhizosphere bacterial network complexity and density did not decrease in three Bt rice lines relative to the non-Bt line.

Taxon: riceOryza sativat0
Treatment: three Bt rice linese0
Outcome: network complexity and densitye0
Direction: did not decreasee0
Comparator: non-Bt linee0

Verbatim

t0
“Bt-transgenic rice plantings”
✓ located verbatim in the source · title, characters 23–51

e0
“network complexity and density for the three Bt rice lines did not decrease compared with those for the non-Bt line”
✓ located verbatim in the source · abstract, characters 1206–1321

Title

Differential impact of Bt-transgenic rice plantings on bacterial community in three niches over consecutive years

Nan Wu; Wencong Shi; Wenwen Liu; et al. Ecotoxicology and Environmental Safety 2021. doi:10.1016/j.ecoenv.2021.112569

Other claims from this paper (9)

Observation Bacterial OTUs clustered primarily by niche type.
Intervention effect Root endosphere bacterial OTUs differed significantly between Bt and non-Bt rice lines.
Intervention effect Leaf endosphere bacterial OTUs differed significantly between Bt and non-Bt rice lines.
Intervention effect Rhizosphere bacterial OTUs did not differ significantly between Bt and non-Bt rice lines.
Observation Bacterial OTUs did not differ among the three Bt rice lines within each niche.
Observation Rhizosphere bacterial communities clustered mainly by year rather than rice line.
Observation Differential bacterial taxa between rice lines did not overlap between years.
Observation Differences in endosphere bacterial communities between Bt and non-Bt rice were mild and transient.
Observation The authors found no adverse impact on rhizosphere soil bacterial communities over three years.

Intervention effectobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

Rotary tillage significantly decreased soil bulk density.

Taxon: RiceOryza sativat0
Treatment: rotary tillagee0
Outcome: bulk density of the soile0
Direction: decreasee0

Not reportedComparator

Verbatim

t0
“Rice Yield”
✓ located verbatim in the source · title, characters 54–64

e0
“significant decrease in bulk density of the soil due to rotary tillage”
✓ located verbatim in the source · abstract, characters 644–714

Title

A Modified Soil Tilth Index and Its Relationship with Rice Yield

Sahr Marvin Bockari-Gevao; Wan Ishak Wan Ismail; Azmi Yahya; et al. Universiti Putra Malaysia Institutional Repository (Universiti Putra Malaysia) 2006

Other claims from this paper (5)

Intervention effect Other soil parameters were not significantly affected by tillage.
Observation Rice yield means differed significantly.
Association Soil bulk density was highly positively correlated with rice yield.
Method / resource The tilth index predicted rice yield better than individual soil properties, with r2 = 0.56.
Recommendation The tilth index may assist yield prediction by comparing measured paddy field conditions.

Intervention effectobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

Rotary tillage significantly decreased soil bulk density in rice paddy fields.

Taxon: riceOryza sativae0
Treatment: rotary tillagee1
Outcome: bulk densitye1
Direction: decreasee1

Not reportedComparator

Verbatim

e0
“Analysis of variance indicated significant difference (p<0.01) among the rice yield means”
✓ located verbatim in the source · abstract, characters 790–879

e1
“Experimental results indicated a significant decrease in bulk density of the soil due to rotary tillage”
✓ located verbatim in the source · abstract, characters 601–704

Title

Sahr Marvin Bockari-Gevao; Wan Ishak Wan Ismail; Azmi Yahya; et al. ScienceAsia 2006. doi:10.2306/scienceasia1513-1874.2006.32.025

Other claims from this paper (4)

Intervention effect Other soil physical parameters were not significantly affected by the tillage operation.
Observation Rice yield differed significantly among the tillage treatments.
Association Bulk density was highly and positively correlated with rice yield.
Method / resource A tilth index built from bulk density, cone index and plasticity index predicted rice yield better (r 2 = 0.56) than individual soil properties.

Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Decreasing planting density significantly increased spikelet number per panicle relative to the preceding population density in rice.

Taxon: riceOryza sativat0
Treatment: decrease in densitye3
Outcome: spikelet number per paniclee3
Direction: increasee3
Comparator: preceding population densitye3

Verbatim

t0
“rice (Oryza sativa L.)”
✓ located verbatim in the source · title, characters 68–90

e3
“a decrease in density brought a significant increase in spikelet number per panicle over the preceding population density”
✓ located verbatim in the source · abstract, characters 740–861

Title

Effect of planting density on growth, yield and yield attributes of rice (Oryza sativa L.)

Arbissie Asmamaw Berhanu African Journal of Agricultural Research 2017. doi:10.5897/ajar2014.9455

Other claims from this paper (14)

Intervention effect Planting density had a highly significant effect on panicle number per m2, spikelet number per panicle and ripening percentage in rice.
Intervention effect Panicle number per m2 was higher at 50 hills m-2, followed by 33.3 hills m-2, than at the standard density in rice.
Intervention effect Spikelet number per panicle increased by 44% at 16.7 hills m-2 compared with 50 hills m-2 in rice.
Intervention effect Spikelet number per panicle increased by 32% at 16.7 hills m-2 compared with 33.3 hills m-2 in rice.
Intervention effect Spikelet number per panicle increased by 26% at 16.7 hills m-2 compared with 25 hills m-2 in rice.
Intervention effect Spikelet number per panicle increased by 9% at 16.7 hills m-2 compared with 22.2 hills m-2 in rice.
Intervention effect Grain yield was higher at 50 hills m-2, followed by 16.7 hills m-2, but did not differ significantly among planting density treatments in rice.
Intervention effect Paddy yield under high planting density (50 hills m-2) was 4.0% higher than at 16.7 hills m-2 in rice.
Intervention effect Paddy yield under high planting density (50 hills m-2) was 9.5% higher than at 22.2 hills m-2 in rice.
Intervention effect Paddy yield under high planting density (50 hills m-2) was 4.8% higher than at 25 hills m-2 in rice.
Intervention effect Paddy yield under high planting density (50 hills m-2) was 6.9% higher than at 33.3 hills m-2 in rice.
Intervention effect Panicle length decreased by 12% in rice as plant density increased from 16.7 to 50 hills m-2.
Intervention effect Stem diameter decreased by 29.2% in rice as plant density increased from 16.7 to 50 hills m-2.
Recommendation The authors recommend 16.7 and 50 hills m-2 as the more appropriate densities for cultivating the rice variety Nerica-4.

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Water-saving protective cultivation decreased soil bulk density.

Taxon: riceOryza sativat0
Treatment: Water-saving protective cultivation patterne0
Outcome: soil bulk densitye0
Direction: decreasee0

Not reportedComparator

Verbatim

t0
“rice”
✓ located verbatim in the source · title, characters 45–49

e0
“Water-saving protective cultivation pattern could decrease soil bulk density”
✓ located verbatim in the source · abstract, characters 775–851

Title

Effect of protective cultivation patterns of rice in cold areas on soil physiological and biochemical status in paddy field.

Xiuzhi Wang; Qian YongDe; Deyuan Zhang; et al. Agricultural Science and Technology Hunan 2010

Other claims from this paper (13)

Intervention effect Soil physical and chemical characteristics of rice paddy were clearly improved under water-saving protective cultivation.
Observation Root weights showed absolute advantages in the rotary tillage section.
Intervention effect Water-saving protective cultivation improved soil porosity.
Intervention effect Water-saving protective cultivation enhanced soil quick-acting nutrients.
Intervention effect Soil catalase activity was 5.39% higher under water-saving protective cultivation than conventional cultivation.
Intervention effect Soil acid phosphatase activity was 14.52% higher under water-saving protective cultivation than conventional cultivation.
Intervention effect Soil urease activity was 8.33% higher under water-saving protective cultivation than conventional cultivation.
Intervention effect Soil sucrase activity was 32.82% lower under water-saving protective cultivation than conventional cultivation.
Intervention effect The crude straw decomposition rate in the surface layer was 11.71% higher than under conventional cultivation.
Intervention effect The crude straw decomposition rate in the whole tillage layer was 4.69% higher than under conventional cultivation.
Intervention effect The crude straw decomposition rate in the deep layer was 9.10% higher than under conventional cultivation.
Intervention effect The total number of soil bacteria was greatly increased.
Intervention effect Soil temperature was obviously improved.

Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Increasing planting density decreased KL and KN/KL.

Taxon: riceOryza sativat0
Treatment: increasing planting densitye0
Outcome: KL and KN/KL valuese0
Direction: decreasee0

Not reportedComparator

Verbatim

e0
“increasing planting density resulted in a decrease in KL and KN/KL values”
✓ located verbatim in the source · abstract, characters 1169–1242

t0
“rice”
✓ located verbatim in the source · title, characters 153–157

Title

Optimizing nitrogen application and planting density improves yield and resource use efficiency via regulating canopy light and nitrogen distribution in rice

Zichen Liu; Liyan Shang; Shuaijun Dai; et al. Journal of Integrative Agriculture 2024. doi:10.1016/j.jia.2024.04.006

Other claims from this paper (16)

Intervention effect N2D2 yielded 3.4% more rice than N3D1.
Intervention effect N2D2 had 4.4% higher NUEg than N3D1.
Association Nitrogen rate, planting density and their interaction significantly affected heading-stage KN, KL and KN/KL.
Association KN decreased as nitrogen input increased.
Association KN decreased as planting density increased.
Intervention effect KN was 43.5% lower under N2 than N1.
Intervention effect KN was 58.8% lower under N3 than N1.
Intervention effect KN was 16.0% lower under D2 than D1.
Intervention effect A low nitrogen rate produced higher KL and KN/KL values.
Intervention effect A high nitrogen rate produced the opposite trend in KL and KN/KL.
Intervention effect N2D2 had higher KL and KN than N3D1.
Intervention effect N2D2 and N3D1 had comparable KN/KL.
Association KL was negatively correlated with RUE.
Association KN was positively correlated with NUEg.
Association KN/KL was positively correlated with NUEg.
Recommendation The authors conclude that denser planting with reduced nitrogen can maintain yield and improve resource use efficiency.

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Straw incorporation decreased soil bulk density, depending on the straw incorporation rate.

Taxon: riceOryza sativae0
Treatment: straw incorporatione1
Outcome: soil bulk density (BD)e1
Direction: decreasee1

Not reportedComparator

Verbatim

e0
“Planting rice is one method to effectively utilize saline sodic land”
✓ located verbatim in the source · abstract, characters 0–68

e1
“a decrease in soil bulk density (BD) and a decrease in the percentage of < 0.053 mm particle size aggregates after straw incorporation depend on the straw incorporation rate”
✓ located verbatim in the source · abstract, characters 687–860

Title

Changes in soil characteristics and rice yield under straw returning in saline sodic soils

Xudong Yuan; Cheng Ran; Dapeng Gao; et al. Soil Science & Plant Nutrition 2022. doi:10.1080/00380768.2022.2124097

Other claims from this paper (9)

Intervention effect Straw incorporation decreased the percentage of <0.053 mm particle size aggregates, depending on the straw incorporation rate.
Intervention effect Exchangeable Na+ and exchangeable sodium percentage were significantly lower in the straw treatments than in the CK treatment.
Intervention effect Straw incorporation had a positive effect on reducing soil pH and EC.
Intervention effect Straw incorporation had a positive effect on accumulation of soil organic matter and total nitrogen.
Association SOM and TN increased gradually as the straw incorporation rate increased.
Association Rice yield increased and then decreased as the straw incorporation rate increased.
Intervention effect The S3 treatment gave the highest rice yield, 8.57 t ha−1 as a four-year average.
Intervention effect There was no significant difference between the S3 and S4 treatments in soil physical structure, chemical properties or nutrients.
Recommendation A straw incorporation of 5600 kg ha−1 (S3) is recommended for improving saline sodic soil and increasing rice yield in the first four years.

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Water-saving protective cultivation decreased soil bulk density.

Taxon: RiceOryza sativat0
Treatment: Water-saving protective cultivation patterne0
Outcome: soil bulk densitye0
Direction: decreasee0

Not reportedComparator

Verbatim

e0
“Water-saving protective cultivation pattern could decrease soil bulk density,improve soil porosity,enhance soil quick-acting nutrients.”
✓ located verbatim in the source · abstract, characters 763–898

t0
“Rice”
✓ located verbatim in the source · title, characters 45–49

Title

Effect of Protective Cultivation Patterns of Rice in Cold Areas on Soil Physiological and Biochemical Status

Guiping Zheng Anhui nongye kexue 2010

Other claims from this paper (12)

Observation Rice root weight was advantageous in the rotary tillage section.
Intervention effect Water-saving protective cultivation improved soil porosity.
Intervention effect Water-saving protective cultivation enhanced soil quick-acting nutrients.
Intervention effect catalase activity was 5.39% higher under water-saving protective cultivation than conventional tillage.
Intervention effect acid phosphatase activity was 14.52% higher under water-saving protective cultivation than conventional tillage.
Intervention effect urease activity was 8.33% higher under water-saving protective cultivation than conventional tillage.
Intervention effect Sucrase activity was 32.82% lower than conventional tillage.
Intervention effect Straw decomposition in surface layer was 11.71% higher than conventional tillage.
Intervention effect Straw decomposition in whole tillage layer was 4.96% higher than conventional tillage.
Intervention effect Straw decomposition in deep layer was 9.10% higher than conventional tillage.
Observation The total number of soil bacteria greatly increased.
Observation Soil temperature improved.

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“decrease in density”

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