Measurement of plant water use under controlled soil moisture conditions by the negative pressure water circulation technique

Lipiec, Jerzy; Kubota, Tanekazu; Iwama, Hidenori; Hirose, Jiro

doi:10.1080/00380768.1988.10415697

Cited by 21 publications

(10 citation statements)

References 11 publications

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“…The existence of higher unsaturated hydraulic conductivity in undisturbed soil compared to loose layer can be implied by higher volumetric water content in whole range of water suction up to -1.5 MPa. This is in agreement with the results of Boone et al (1978), Hasegawa and Sat• (1987) and Lipiec et al (1988). Higher root water uptake rate was also ascribed to higher root-soil contact (Veen et al, 1992).…”

Section: Rooting Characteristicssupporting

confidence: 91%

Effects of soil structural discontinuity on root and shoot growth and water use of maize

et al. 1993

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The role of roots penetrating various undisturbed soil horizons beneath loose layer in water use and shoot growth of maize was evaluated in greenhouse experiment. 18 undisturbed soil columns 20 cm in diameter and 20 cm in height were taken from the depths 30-50 cm and 50-70 cm from a Brown Lowland soil, a Pseudogley and a Brown Andosol (3 columns from each depth and soil). Initial resistance to penetration in undisturbed soil horizons varied from 2.5 to 8.9 MPa while that in the loose layer was 0.01 MPa. The undisturbed horizons had a major effect on vertical arrangement of roots. Root length density in loose layer varied from 96 to 126 km m-3 while in adjacent stronger top layers of undisturbed horizons from 1.6 to 20.0 km m -3 with higher values in upper horizons of each soil. For specific root length, the corresponding ranges were 79.4-107.7 m g-1 (on dry basis) and 38.2-63.7 m g-l, respectively. Ratios of root dry weight per unit volume of soil between loose and adjacent undisturbed layers were much lower than those of root length density indicating that roots in undisturbed horizons were produced with considerably higher partition of assimilates. Root size in undisturbed horizons relative to total roots was from 1.1 to 38.1% while water use from the horizons was from 54.1 to 74.0%. Total water use and shoot growth were positively correlated with root length in undisturbed soil horizons. There was no correlation between shoot growth and water use from the loose layers.

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Section: Rooting Characteristicssupporting

confidence: 91%

Effects of soil structural discontinuity on root and shoot growth and water use of maize

et al. 1993

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“…A controlled environment experiment on the effect of small differences in matric potential An experimental facility was constructed to maintain soil moisture status at a constant matric potential using a negative-pressure circulation system (Lipiec et al, 1988) within a controlled environment growth room. Twenty 0.25-m-tall rooting chambers were filled with soil, packed to a bulk density of approximately 1.2 g cm )3 .…”

Section: Field Experimentsmentioning

confidence: 99%

Does Soil Strength Play a Role in Wheat Yield Losses Caused by Soil Drying?

et al. 2006

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Shoot growth in wheat is sensitive to high soil strength, but as high strength and drying tend to occur together it has proved difficult to separate the effects of water stress and mechanical impedance. The results of two field experiments in 2003 and 2004, where soil strength was manipulated by compaction and irrigation, demonstrated that the yield of wheat (Triticum aestivum L.) was sensitive to physical stress in the root zone. We obtained linear relationships between yield and soil strength and between yield and accumulated soil moisture data (accumulation analogous to thermal time), with similar slopes for both seasons. We were unable to detect root-sourced signals of xylem-sap ABA concentration, despite changes in stomatal conductance. When mechanical impedance and matric potential were varied independently in controlled environments, the growth of wheat was sensitive to mechanical impedance, but not to small changes in matric potential. While the response of stomatal conductance to soil drying in the field could be interpreted as evidence of hydraulic signalling, we suggest that the role of high soil strength, in limiting growth rates on moderately dry soil, requires further research.

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“…The water uptake by Kentucky bluegrass (Agnew and Carrow, 1985), pigeon pea (Kirkegaard et al, 1992), and maize (Amato and Ritchie, 2002) was decreased by soil compaction. On the other hand, Lipiec et al (1988) indicated that water uptake by maize was enhanced by higher soil bulk density. The effects of soil compaction on dry matter production are also contradictory.…”

mentioning

confidence: 99%

Water Competition of Intercropped Pearl Millet with Cowpeaunder Drought and Soil Compaction Stresses

Zegada‐Lizarazu

Izumi

Iijima

2006

Plant Production Science

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Measurement of plant water use under controlled soil moisture conditions by the negative pressure water circulation technique

Cited by 21 publications

References 11 publications

Effects of soil structural discontinuity on root and shoot growth and water use of maize

Effects of soil structural discontinuity on root and shoot growth and water use of maize

Does Soil Strength Play a Role in Wheat Yield Losses Caused by Soil Drying?

Water Competition of Intercropped Pearl Millet with Cowpeaunder Drought and Soil Compaction Stresses

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