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“yield decrease”

16,663 matches

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plus 3,107 non-evaluative

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plus 26 earlier · 1910s–1940s

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Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

D15 increased nitrogen partial productivity by 1.1% over D5 in the wet year.

Taxon: winter wheatTriticum aestivumt0
Treatment: D15e0
Outcome: N partial productivitye1
Direction: promotede0
Value: 1.1 %e0
Qualifier: wet yeare0
Comparator: D5e0

Verbatim

e0
“D15 promoted those by 0.9 %, 1.3 %, 3.7 % and 1.1 % over D5 under wet year”
✓ located verbatim in the source · abstract, characters 1090–1164

e1
“Compared with D5, deep urea placement significantly increased the crop N uptake (10.4–27.6 %), grain N content (1.2–18.7 %), N recovery efficiency (NRE, 0.9–16.7 %) and N partial productivity (PFPN, 1.1–20.0 %) in dry and normal years, and D15 promoted those by 0.9 %, 1.3 %, 3.7 % and 1.1 % over D5 under wet year. Additionally, compared with D5, deep urea placement increased crop water productivity (WP) and yield by …” Show full quote
✓ located verbatim in the source · abstract, characters 850–1379

t0
“winter wheat”
✓ located verbatim in the source · title, characters 122–134

Title

Optimizing urea deep placement to rainfall can maximize crop water-nitrogen productivity and decrease nitrate leaching in winter wheat

Yingxin Wang; Qin Guo; Yirui Xu; et al. Agricultural Water Management 2022. doi:10.1016/j.agwat.2022.107971

Other claims from this paper (16)

Intervention effect Deep urea placement increased root length and weight densities at 20–60 cm.
Intervention effect Deep urea placement increased grain nitrogen content by 1.2–18.7% in dry and normal years.
Intervention effect Deep urea placement increased nitrogen recovery efficiency by 0.9–16.7% in dry and normal years.
Intervention effect Deep urea placement increased nitrogen partial productivity by 1.1–20.0% in dry and normal years.
Intervention effect D15 increased nitrogen uptake by 0.9% over D5 in the wet year.
Intervention effect D15 increased grain nitrogen content by 1.3% over D5 in the wet year.
Intervention effect D15 increased nitrogen recovery efficiency by 3.7% over D5 in the wet year.
Intervention effect Deep urea placement increased crop water productivity by 9.6–23.9% in dry and normal years.
Intervention effect Deep urea placement increased yield by 3.2–20.0% in dry and normal years.
Intervention effect D15 increased water productivity by 1.1% over D5 in the wet year.
Intervention effect D15 increased yield by 0.5% over D5 in the wet year.
Intervention effect Deep urea placement raised soil nitrate accumulation by 4.7–14.5% compared with D5.
Observation Urea placement at 28.0–30.0 cm maximized wheat yield, grain nitrogen content and water productivity in dry years.
Observation Urea placement at 20.7–21.6 cm maximized wheat yield, grain nitrogen content and water productivity in normal years.
Observation Urea placement at 12.3–13.1 cm maximized wheat yield, grain nitrogen content and water productivity in wet years.
Recommendation The authors recommend adjusting moderate urea placement depth to precipitation conditions.

Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

CO2 above 46 mmol m−3 gave no further growth benefit at moderate PPF.

Taxon: lettuceLactuca sativae2
Treatment: Elevating CO2 above 46 mmol m-3e0
Outcome: benefite0
Direction: no further benefite0

Not reportedComparator

Verbatim

e0
“Elevating CO2 above 46 mmol m-3 at moderate PPF had no further benefit.”
✓ located verbatim in the source · abstract, characters 342–413

e1
“Elevating CO2 above 46 mmol m-3 at moderate PPF had no further benefit.”
✓ located verbatim in the source · abstract, characters 342–413

t0
“Effects of CO2and Photosynthetic Photon Flux on Yield, Gas Exchange and Growth Rate ofLactuca SativaL. ‘Waldmann’s Green”
✓ located verbatim in the source · title, characters 0–120

e2
“Enrichment of CO2 to 46 mmol m-3 (1000 mm3 dm-3) at a moderate photosynthetic photon flux (PPF) of 450 micromoles m-2 s-1 stimulated fresh and dry weight gain of lettuce leaves 39% to 75% relative to plants at 16 mmol m-3 CO2 (350 mm3 dm-3).”
✓ located verbatim in the source · abstract, characters 0–241

e3
“high PPF of 880-900 micromoles m-2 s-1 gave further, substantial increases in growth, RGR, net assimilation rate (NAR) and photosynthetic rate (Pn), but a decrease in leaf area ratio (LAR), at 46 or 69 mmol m-3 (1000 or 1500 mm3 dm-3) CO2”
✓ located verbatim in the source · abstract, characters 423–661

e4
“Enrichment of CO2 to a supraoptimal level of 92 mmol m-3 (2000 mm3 dm-3) at high PPF increased leaf area and LAR”
✓ located verbatim in the source · abstract, characters 718–830

Title

Effects of CO₂and Photosynthetic Photon Flux on Yield, Gas Exchange and Growth Rate ofLactuca SativaL. ‘Waldmann’s Green'

SHARON L. KNIGHT; CARY A. MITCHELL Journal of Experimental Botany 1988. doi:10.1093/jxb/39.3.317

Other claims from this paper (9)

Intervention effect CO2 enrichment increased lettuce leaf fresh weight gain by 39–75% at moderate PPF.
Intervention effect CO2 enrichment increased lettuce leaf dry weight gain by 39–75% at moderate PPF.
Observation Relative growth rate increased only in the first days of exponential growth.
Intervention effect High PPF increased growth, RGR and NAR at 46 or 69 mmol m−3 CO2.
Intervention effect High PPF increased photosynthetic rate at enriched CO2.
Intervention effect High PPF decreased leaf area ratio.
Intervention effect At high PPF, supraoptimal CO2 increased leaf area and LAR.
Intervention effect Supraoptimal CO2 decreased specific leaf weight, NAR and Pn.
Intervention effect Supraoptimal CO2 had no effect on organ dry weights or RGR compared with 69 mmol m−3 CO2.

Observationobservedoriginal resultmeasured

Claim · model-written summary

MPS 1 population showed a genetic gain of -3.35% in ASI relative to MPS 2 population.

Taxon: maizeZea mayse0
Material: MPS 1 populatione1
Treatment: heat stresse2
Outcome: ASIe1
Direction: decreaseinferrede1
Value: -3.35%e1
Comparator: MPS 2 populatione1
Setting: Main Agriculture Research Station, Raichur, Karnataka during spring seasone2

Verbatim

e0
“This study was designed to assess the genetic gain in various stress-adaptive traits of maize testcrosses derived from two heat tolerant heterotic multi-parental synthetic (MPS 1 and MPS 2) populations”
✓ located verbatim in the source · abstract, characters 405–606

e1
“The maximum genetic gain was observed for grain yield (58.55%), days to 50 per cent anthesis (-2.05%), days to 50 per cent silking (-2.24%), ASI (-3.35%), plant height (4.25%) and ear height (5.49%) in MPS 1 population compared to MPS 2 population”
✓ located verbatim in the source · abstract, characters 1529–1776

e2
“were evaluated in Alpha lattice design with two replications at Main Agriculture Research Station, Raichur, Karnataka during spring season where the most part of reproductive stage, starting from tassel emergence until late grain filling, was exposed to heat stress”
✓ located verbatim in the source · abstract, characters 788–1053

Title

Genetic Gain in Testcrosses Derived from Heat Tolerant Multi-parental Synthetic Populations of Maize

Muttappa Hosamani; I. Shankergoud; P. H. Zaidi; et al. International Journal of Current Microbiology and Applied Sciences 2020. doi:10.20546/ijcmas.2020.901.249

Other claims from this paper (8)

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Subsoiling at jointing reduced or constrained transpiration rate by 42.5%.

Taxon: Summer MaizeZea mayst0
Material: Zhendan958e1
Treatment: subsoiling at jointing stagee0
Outcome: transpiration ratee0
Direction: decreasede0
Value: 42.5%e0
Comparator: non-subsoilinge0

Verbatim

t0
“Summer Maize”
✓ located verbatim in the source · title, characters 87–99

e0
“compared with non-subsoiling,subsoiling at jointing stage achieved the following characters: plant height and ear height decreased by 17.3 cm and 9.0 cm,stem diameter decreased by 2.7 mm,and one leaf less;the increase of LAI before silking was limited,while decrease of LAI after silking was slow;stomatal conductance,intercellular CO2 concentration,transpiration rate,net photosynthetic rate of ear leaves decreased 38%…” Show full quote
✓ located verbatim in the source · abstract, characters 302–1013

e1
“Zhendan958 was applied in the field experiment.”
✓ located verbatim in the source · abstract, characters 0–47

Title

Effects of Subsoiling at Jointing Stage on Dry Matter Production and Photosynthesis of Summer Maize

Dongxing Zhang Yumi kexue 2013

Other claims from this paper (17)

Intervention effect Subsoiling at jointing reduced or constrained plant height by 17.3 cm.
Intervention effect Subsoiling at jointing reduced or constrained ear height by 9.0 cm.
Intervention effect Subsoiling at jointing reduced or constrained stem diameter by 2.7 mm.
Intervention effect Subsoiling at jointing reduced or constrained leaf by one leaf.
Intervention effect Subsoiling at jointing reduced or constrained LAI before silking.
Intervention effect Subsoiling at jointing reduced or constrained LAI after silking.
Intervention effect Subsoiling at jointing reduced or constrained stomatal conductance by 38%.
Intervention effect Subsoiling at jointing reduced or constrained intercellular CO2 concentration by 25.3%.
Intervention effect Subsoiling at jointing reduced or constrained net photosynthetic rate by 2.0%.
Intervention effect Subsoiling at jointing reduced or constrained dry matter production by 1 519.5 kg/ha.
Intervention effect Subsoiling at jointing reduced or constrained dry matter production by 168.8 kg/ha.
Intervention effect Subsoiling at jointing reduced or constrained grain number by 100.
Intervention effect Subsoiling at jointing reduced or constrained economic index by 7 percentage.
Intervention effect Subsoiling at jointing reduced or constrained grain yield by 1 662.0 kg/ha.
Intervention effect The two nitrogen regimes did not differ significantly for the studied outcomes.
Association No subsoiling by nitrogen regime interaction was observed.
Recommendation The authors conclude that jointing-stage subsoiling is unsuitable.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Subsoiling at jointing reduced or constrained economic index by 7 percentage.

Taxon: Summer MaizeZea mayst0
Material: Zhendan958e1
Treatment: subsoiling at jointing stagee0
Outcome: economic indexe0
Direction: decreasede0
Value: 7 percentagee0
Comparator: non-subsoilinge0

Verbatim

t0
“Summer Maize”
✓ located verbatim in the source · title, characters 87–99

e0
“compared with non-subsoiling,subsoiling at jointing stage achieved the following characters: plant height and ear height decreased by 17.3 cm and 9.0 cm,stem diameter decreased by 2.7 mm,and one leaf less;the increase of LAI before silking was limited,while decrease of LAI after silking was slow;stomatal conductance,intercellular CO2 concentration,transpiration rate,net photosynthetic rate of ear leaves decreased 38%…” Show full quote
✓ located verbatim in the source · abstract, characters 302–1013

e1
“Zhendan958 was applied in the field experiment.”
✓ located verbatim in the source · abstract, characters 0–47

Title

Effects of Subsoiling at Jointing Stage on Dry Matter Production and Photosynthesis of Summer Maize

Dongxing Zhang Yumi kexue 2013

Other claims from this paper (17)

Intervention effect Subsoiling at jointing reduced or constrained plant height by 17.3 cm.
Intervention effect Subsoiling at jointing reduced or constrained ear height by 9.0 cm.
Intervention effect Subsoiling at jointing reduced or constrained stem diameter by 2.7 mm.
Intervention effect Subsoiling at jointing reduced or constrained leaf by one leaf.
Intervention effect Subsoiling at jointing reduced or constrained LAI before silking.
Intervention effect Subsoiling at jointing reduced or constrained LAI after silking.
Intervention effect Subsoiling at jointing reduced or constrained stomatal conductance by 38%.
Intervention effect Subsoiling at jointing reduced or constrained intercellular CO2 concentration by 25.3%.
Intervention effect Subsoiling at jointing reduced or constrained transpiration rate by 42.5%.
Intervention effect Subsoiling at jointing reduced or constrained net photosynthetic rate by 2.0%.
Intervention effect Subsoiling at jointing reduced or constrained dry matter production by 1 519.5 kg/ha.
Intervention effect Subsoiling at jointing reduced or constrained dry matter production by 168.8 kg/ha.
Intervention effect Subsoiling at jointing reduced or constrained grain number by 100.
Intervention effect Subsoiling at jointing reduced or constrained grain yield by 1 662.0 kg/ha.
Intervention effect The two nitrogen regimes did not differ significantly for the studied outcomes.
Association No subsoiling by nitrogen regime interaction was observed.
Recommendation The authors conclude that jointing-stage subsoiling is unsuitable.

Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

Relative growth rate increased only in the first days of exponential growth.

Taxon: lettuceLactuca sativae2
Outcome: Relative growth rate (RGR)e0
Direction: stimulatede0
Qualifier: only during the first several days of exponential growthe0

Verbatim

e0
“Relative growth rate (RGR) was stimulated only during the first several days of exponential growth.”
✓ located verbatim in the source · abstract, characters 242–341

e1
“Relative growth rate (RGR) was stimulated only during the first several days of exponential growth.”
✓ located verbatim in the source · abstract, characters 242–341

t0
“Effects of CO2and Photosynthetic Photon Flux on Yield, Gas Exchange and Growth Rate ofLactuca SativaL. ‘Waldmann’s Green”
✓ located verbatim in the source · title, characters 0–120

e2
“Enrichment of CO2 to 46 mmol m-3 (1000 mm3 dm-3) at a moderate photosynthetic photon flux (PPF) of 450 micromoles m-2 s-1 stimulated fresh and dry weight gain of lettuce leaves 39% to 75% relative to plants at 16 mmol m-3 CO2 (350 mm3 dm-3).”
✓ located verbatim in the source · abstract, characters 0–241

e3
“high PPF of 880-900 micromoles m-2 s-1 gave further, substantial increases in growth, RGR, net assimilation rate (NAR) and photosynthetic rate (Pn), but a decrease in leaf area ratio (LAR), at 46 or 69 mmol m-3 (1000 or 1500 mm3 dm-3) CO2”
✓ located verbatim in the source · abstract, characters 423–661

e4
“Enrichment of CO2 to a supraoptimal level of 92 mmol m-3 (2000 mm3 dm-3) at high PPF increased leaf area and LAR”
✓ located verbatim in the source · abstract, characters 718–830

Title

Effects of CO₂and Photosynthetic Photon Flux on Yield, Gas Exchange and Growth Rate ofLactuca SativaL. ‘Waldmann’s Green'

SHARON L. KNIGHT; CARY A. MITCHELL Journal of Experimental Botany 1988. doi:10.1093/jxb/39.3.317

Other claims from this paper (9)

Intervention effect CO2 enrichment increased lettuce leaf fresh weight gain by 39–75% at moderate PPF.
Intervention effect CO2 enrichment increased lettuce leaf dry weight gain by 39–75% at moderate PPF.
Intervention effect CO2 above 46 mmol m−3 gave no further growth benefit at moderate PPF.
Intervention effect High PPF increased growth, RGR and NAR at 46 or 69 mmol m−3 CO2.
Intervention effect High PPF increased photosynthetic rate at enriched CO2.
Intervention effect High PPF decreased leaf area ratio.
Intervention effect At high PPF, supraoptimal CO2 increased leaf area and LAR.
Intervention effect Supraoptimal CO2 decreased specific leaf weight, NAR and Pn.
Intervention effect Supraoptimal CO2 had no effect on organ dry weights or RGR compared with 69 mmol m−3 CO2.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Subsoiling at jointing reduced or constrained plant height by 17.3 cm.

Taxon: Summer MaizeZea mayst0
Material: Zhendan958e1
Treatment: subsoiling at jointing stagee0
Outcome: plant heighte0
Direction: decreasede0
Value: 17.3 cme0
Comparator: non-subsoilinge0

Verbatim

t0
“Summer Maize”
✓ located verbatim in the source · title, characters 87–99

e0
“compared with non-subsoiling,subsoiling at jointing stage achieved the following characters: plant height and ear height decreased by 17.3 cm and 9.0 cm,stem diameter decreased by 2.7 mm,and one leaf less;the increase of LAI before silking was limited,while decrease of LAI after silking was slow;stomatal conductance,intercellular CO2 concentration,transpiration rate,net photosynthetic rate of ear leaves decreased 38%…” Show full quote
✓ located verbatim in the source · abstract, characters 302–1013

e1
“Zhendan958 was applied in the field experiment.”
✓ located verbatim in the source · abstract, characters 0–47

Title

Effects of Subsoiling at Jointing Stage on Dry Matter Production and Photosynthesis of Summer Maize

Dongxing Zhang Yumi kexue 2013

Other claims from this paper (17)

Intervention effect Subsoiling at jointing reduced or constrained ear height by 9.0 cm.
Intervention effect Subsoiling at jointing reduced or constrained stem diameter by 2.7 mm.
Intervention effect Subsoiling at jointing reduced or constrained leaf by one leaf.
Intervention effect Subsoiling at jointing reduced or constrained LAI before silking.
Intervention effect Subsoiling at jointing reduced or constrained LAI after silking.
Intervention effect Subsoiling at jointing reduced or constrained stomatal conductance by 38%.
Intervention effect Subsoiling at jointing reduced or constrained intercellular CO2 concentration by 25.3%.
Intervention effect Subsoiling at jointing reduced or constrained transpiration rate by 42.5%.
Intervention effect Subsoiling at jointing reduced or constrained net photosynthetic rate by 2.0%.
Intervention effect Subsoiling at jointing reduced or constrained dry matter production by 1 519.5 kg/ha.
Intervention effect Subsoiling at jointing reduced or constrained dry matter production by 168.8 kg/ha.
Intervention effect Subsoiling at jointing reduced or constrained grain number by 100.
Intervention effect Subsoiling at jointing reduced or constrained economic index by 7 percentage.
Intervention effect Subsoiling at jointing reduced or constrained grain yield by 1 662.0 kg/ha.
Intervention effect The two nitrogen regimes did not differ significantly for the studied outcomes.
Association No subsoiling by nitrogen regime interaction was observed.
Recommendation The authors conclude that jointing-stage subsoiling is unsuitable.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Subsoiling at jointing reduced or constrained ear height by 9.0 cm.

Taxon: Summer MaizeZea mayst0
Material: Zhendan958e1
Treatment: subsoiling at jointing stagee0
Outcome: ear heighte0
Direction: decreasede0
Value: 9.0 cme0
Comparator: non-subsoilinge0

Verbatim

t0
“Summer Maize”
✓ located verbatim in the source · title, characters 87–99

e0
“compared with non-subsoiling,subsoiling at jointing stage achieved the following characters: plant height and ear height decreased by 17.3 cm and 9.0 cm,stem diameter decreased by 2.7 mm,and one leaf less;the increase of LAI before silking was limited,while decrease of LAI after silking was slow;stomatal conductance,intercellular CO2 concentration,transpiration rate,net photosynthetic rate of ear leaves decreased 38%…” Show full quote
✓ located verbatim in the source · abstract, characters 302–1013

e1
“Zhendan958 was applied in the field experiment.”
✓ located verbatim in the source · abstract, characters 0–47

Title

Effects of Subsoiling at Jointing Stage on Dry Matter Production and Photosynthesis of Summer Maize

Dongxing Zhang Yumi kexue 2013

Other claims from this paper (17)

Intervention effect Subsoiling at jointing reduced or constrained plant height by 17.3 cm.
Intervention effect Subsoiling at jointing reduced or constrained stem diameter by 2.7 mm.
Intervention effect Subsoiling at jointing reduced or constrained leaf by one leaf.
Intervention effect Subsoiling at jointing reduced or constrained LAI before silking.
Intervention effect Subsoiling at jointing reduced or constrained LAI after silking.
Intervention effect Subsoiling at jointing reduced or constrained stomatal conductance by 38%.
Intervention effect Subsoiling at jointing reduced or constrained intercellular CO2 concentration by 25.3%.
Intervention effect Subsoiling at jointing reduced or constrained transpiration rate by 42.5%.
Intervention effect Subsoiling at jointing reduced or constrained net photosynthetic rate by 2.0%.
Intervention effect Subsoiling at jointing reduced or constrained dry matter production by 1 519.5 kg/ha.
Intervention effect Subsoiling at jointing reduced or constrained dry matter production by 168.8 kg/ha.
Intervention effect Subsoiling at jointing reduced or constrained grain number by 100.
Intervention effect Subsoiling at jointing reduced or constrained economic index by 7 percentage.
Intervention effect Subsoiling at jointing reduced or constrained grain yield by 1 662.0 kg/ha.
Intervention effect The two nitrogen regimes did not differ significantly for the studied outcomes.
Association No subsoiling by nitrogen regime interaction was observed.
Recommendation The authors conclude that jointing-stage subsoiling is unsuitable.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Subsoiling at jointing reduced or constrained stem diameter by 2.7 mm.

Taxon: Summer MaizeZea mayst0
Material: Zhendan958e1
Treatment: subsoiling at jointing stagee0
Outcome: stem diametere0
Direction: decreasede0
Value: 2.7 mme0
Comparator: non-subsoilinge0

Verbatim

t0
“Summer Maize”
✓ located verbatim in the source · title, characters 87–99

e0
“compared with non-subsoiling,subsoiling at jointing stage achieved the following characters: plant height and ear height decreased by 17.3 cm and 9.0 cm,stem diameter decreased by 2.7 mm,and one leaf less;the increase of LAI before silking was limited,while decrease of LAI after silking was slow;stomatal conductance,intercellular CO2 concentration,transpiration rate,net photosynthetic rate of ear leaves decreased 38%…” Show full quote
✓ located verbatim in the source · abstract, characters 302–1013

e1
“Zhendan958 was applied in the field experiment.”
✓ located verbatim in the source · abstract, characters 0–47

Title

Effects of Subsoiling at Jointing Stage on Dry Matter Production and Photosynthesis of Summer Maize

Dongxing Zhang Yumi kexue 2013

Other claims from this paper (17)

Intervention effect Subsoiling at jointing reduced or constrained plant height by 17.3 cm.
Intervention effect Subsoiling at jointing reduced or constrained ear height by 9.0 cm.
Intervention effect Subsoiling at jointing reduced or constrained leaf by one leaf.
Intervention effect Subsoiling at jointing reduced or constrained LAI before silking.
Intervention effect Subsoiling at jointing reduced or constrained LAI after silking.
Intervention effect Subsoiling at jointing reduced or constrained stomatal conductance by 38%.
Intervention effect Subsoiling at jointing reduced or constrained intercellular CO2 concentration by 25.3%.
Intervention effect Subsoiling at jointing reduced or constrained transpiration rate by 42.5%.
Intervention effect Subsoiling at jointing reduced or constrained net photosynthetic rate by 2.0%.
Intervention effect Subsoiling at jointing reduced or constrained dry matter production by 1 519.5 kg/ha.
Intervention effect Subsoiling at jointing reduced or constrained dry matter production by 168.8 kg/ha.
Intervention effect Subsoiling at jointing reduced or constrained grain number by 100.
Intervention effect Subsoiling at jointing reduced or constrained economic index by 7 percentage.
Intervention effect Subsoiling at jointing reduced or constrained grain yield by 1 662.0 kg/ha.
Intervention effect The two nitrogen regimes did not differ significantly for the studied outcomes.
Association No subsoiling by nitrogen regime interaction was observed.
Recommendation The authors conclude that jointing-stage subsoiling is unsuitable.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Subsoiling at jointing reduced or constrained intercellular CO2 concentration by 25.3%.

Taxon: Summer MaizeZea mayst0
Material: Zhendan958e1
Treatment: subsoiling at jointing stagee0
Outcome: intercellular CO2 concentratione0
Direction: decreasede0
Value: 25.3%e0
Comparator: non-subsoilinge0

Verbatim

t0
“Summer Maize”
✓ located verbatim in the source · title, characters 87–99

e0
“compared with non-subsoiling,subsoiling at jointing stage achieved the following characters: plant height and ear height decreased by 17.3 cm and 9.0 cm,stem diameter decreased by 2.7 mm,and one leaf less;the increase of LAI before silking was limited,while decrease of LAI after silking was slow;stomatal conductance,intercellular CO2 concentration,transpiration rate,net photosynthetic rate of ear leaves decreased 38%…” Show full quote
✓ located verbatim in the source · abstract, characters 302–1013

e1
“Zhendan958 was applied in the field experiment.”
✓ located verbatim in the source · abstract, characters 0–47

Title

Effects of Subsoiling at Jointing Stage on Dry Matter Production and Photosynthesis of Summer Maize

Dongxing Zhang Yumi kexue 2013

Other claims from this paper (17)

Intervention effect Subsoiling at jointing reduced or constrained plant height by 17.3 cm.
Intervention effect Subsoiling at jointing reduced or constrained ear height by 9.0 cm.
Intervention effect Subsoiling at jointing reduced or constrained stem diameter by 2.7 mm.
Intervention effect Subsoiling at jointing reduced or constrained leaf by one leaf.
Intervention effect Subsoiling at jointing reduced or constrained LAI before silking.
Intervention effect Subsoiling at jointing reduced or constrained LAI after silking.
Intervention effect Subsoiling at jointing reduced or constrained stomatal conductance by 38%.
Intervention effect Subsoiling at jointing reduced or constrained transpiration rate by 42.5%.
Intervention effect Subsoiling at jointing reduced or constrained net photosynthetic rate by 2.0%.
Intervention effect Subsoiling at jointing reduced or constrained dry matter production by 1 519.5 kg/ha.
Intervention effect Subsoiling at jointing reduced or constrained dry matter production by 168.8 kg/ha.
Intervention effect Subsoiling at jointing reduced or constrained grain number by 100.
Intervention effect Subsoiling at jointing reduced or constrained economic index by 7 percentage.
Intervention effect Subsoiling at jointing reduced or constrained grain yield by 1 662.0 kg/ha.
Intervention effect The two nitrogen regimes did not differ significantly for the studied outcomes.
Association No subsoiling by nitrogen regime interaction was observed.
Recommendation The authors conclude that jointing-stage subsoiling is unsuitable.

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“yield decrease”

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