Effect of Soil Water Potential and Bulk Density on Water Uptake Patterns and Resistance to Flow of Water in Wheat Plants

Yang, S. J.; Jong, E. de

doi:10.4141/cjss71-027

Cited by 17 publications

(6 citation statements)

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“…This effect is generally related to lower root activity (Derksen and Van Rees 1993) and number (Van Rees et al 1994) in the less-productive upper slope positions. In this study, soil bulk densities of 1.7 Mg m -3 below 60 cm at the summit are sufficiently high to impede root growth (Yang and de Jong 1971;Jones 1983) whereas such high bulk densities do not occur until the 90-cm depth at the toeslope (Table 2); this would partially explain less root extraction of water at depth at the upper slope positions. Because of the differences in water use under a crop-fallow rotation, the soil water contents in upper slope positions become higher than in lower slope positions.…”

Section: Resultsmentioning

confidence: 92%

Slope position and subsoiling effects on soil water and spring wheat yield

McConkey¹,

Ulrich²,

Dyck³

1997

Can. J. Soil. Sci.

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. 1997. Slope position and subsoiling effects on soil water and spring wheat yield. Can. J. Soil Sci. 77: 83-90. A study was conducted on a 4-m-high ridge in southwestern Saskatchewan to determine the relationship of slope position with the soil water regime and spring wheat (Triticum aestivum L.) production and to determine if those relationships were altered by subsoiling. In all years, available soil water in the spring to 120 cm increased significantly with distance upslope. This pattern was attributed to residual subsoil water in the rooting zone that had not been used by previous crops in a long-term crop-fallow rotation. After 3 yr of annual spring wheat production, soil water to 1.2 m at all slope positions approximately equalled the water content wilting point (4.0 MPa) water content, showing this residual water had been largely consumed. Apparent use of soil water between seeding and harvest at the upper slope positions was equal to or greater than that at the lower slope positions. Over-winter soil water conservation, using tall (≥ 30-cm-high) wheat stubble for snow trapping, at the upper slope positions was equal to or greater than that at the lower slope positions. In the non-drought years of 1987 and 1989, wheat yields and crop water use efficiency increased significantly with distance downslope. Since these slope effects were not related to water use or availability, they were attributed to higher soil productivity, probably related to more historical net erosion with distance upslope. During the drought year of 1988, wheat yields and water use efficiency were greatest at the upslope positions, but these results were confounded by uneven crop emergence. Subsoiling to 35 cm or deeper increased the amount and depth of infiltration of water in years with near-average November-April precipitation. Subsoiling had little effect on wheat yields and no effect on crop water use. Une expérience a été menée sur une crête de 4 m de haut dans le sud-ouest de la Saskatchewan, pour établir les relations existant entre l'emplacement sur la pente et le régime hydrique du sol, d'une part, et le rendement du blé de printemps (Triticum aestivum L.), de l'autre, et aussi pour voir si ces relations sont modifiées par le sous-solage. Dans chacune des années, la teneur en eau disponible du sol au printemps jusqu'à 120 cm de profondeur augmentait significativement à mesure qu'on remontait la pente, ce qui s'expliquerait par la présence dans la rhizosphère d'eau souterraine résiduelle non utilisée par les cultures antérieures, dans une alternance de longue durée blé-jachère. Après 3 ans de culture de blé de printemps, la teneur en eau du sol jusqu'à 120 cm, à tous les emplacements sur la pente, était approximativement égale à la teneur en eau au point de flétrissement (4,0 MPa), ce qui montre que cette eau résiduelle avait été, dans une large part, consommée. L'utilisation apparente de l'eau du sol entre le semis et la moisson vers le haut de la pente était égale ou supérieure à celle observée en bas de pente. La même obse...

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Section: Resultsmentioning

confidence: 92%

Slope position and subsoiling effects on soil water and spring wheat yield

McConkey¹,

Ulrich²,

Dyck³

1997

Can. J. Soil. Sci.

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“…R.+RP. Early studies on water movement through the soilplant system suggested that the soil represented the major resistance to water flow (Philip, 1957;Gardner, 1960;Gardner and Ehlig, 1962;Cowan, 1965;Yang and de Jong, 1971). However, many researchers have concluded that the major resistance is in the plant, and that R. only becomes significant at soil water con-765 tents near the wilting point (Newman, 1969;Lawlor, 1972;Hansen, 1974;Taylor and Klepper, 1975;Denmead and Millar, 1976;Rose et al, 1976;Blizzard and Boyer, 1980).…”

Section: Additional Index Words: Medicago Sativa L Leaf Water Potenmentioning

confidence: 99%

A Field Study of Plant Resistance to Water Flow in Alfalfa¹

Abduljabbar¹,

Lugg²,

Sammis³

et al. 1984

Agronomy Journal

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“…Much has been reported on the influence of clay content (Unger, 1975;Lal, 1979a;Arya & Paris, 1981), bulk density (peterson, Cunningham & Matelski, 1968a;Yang & De Jong, 1971;Arya & Paris, 1981), organic matter (Hall, Reeve, Thomasson & Wright, 1977;Peterson, Cunningham & Matelski, 1968b;Lal, 1979b) and silt content (Abrol, Khosla & Bhumbla, 1968;Peterson et al, 1968b) on the water-holding capacity of soils. However, very little has been reported on the quantitative influence of clay mineralogy on the waterholding capacity of soiL Gardner (1971), Moorman & Van Wambeke (1978) and Hillel (1980) reported that clay mineralogy has an influence on water-holding capacity_ According to Peterson et al (1968a), however, there is no significant correlation between water-holding capacity and percentage kaolinite, illite, vermiculite, chlorite and interlayered minerals in the soiL Lambooy (1983) showed that if the clay content of a mixture, consisting of a specific clay mineral and sand, is increased from 5 to 50070, the water content of each mixture could be calculated with very high accuracy (correlation coefficient, r=O,99) from a regression equation, for any clay content or soil-water potential.…”

Section: Introductionmentioning

confidence: 97%

Relationship between cation exchange capacity, clay content and water retention of Highveld soils

Lambooy

1984

South African Journal of Plant and Soil

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Water in the soil is held by capillary and adsorption forces. These forces are mainly a function of clay content and mineralogy. To neglect the influence of clay mineralogy when estimating the water-holding properties of soil, implies that only a part of these forces is considered. It is convenient to use some easily measurable soil property to quantify the effect of clay mineralogy. In this study cation exchange capacity (CEC) was used for this purpose. For 320 soil samples of the Highveld Region, water content at a matrix potential of -33 kPa, -1 500 kPa and the percentage water retained between -33 kPa and -1 500 kPa (t:..W), were compared with different parameters. The water retentivity of disturbed soils can be predicted more accurately if variations in CEC are taken into account. Highly significant multiple correlation coefficients of 0,97, 0,96 and 0,91 respectively, were calculated for the relationships of CEC (me/100 9 soil) and clay content with water content at -33 kPa and -1 500 kPa and with t:..w.S. Afr. J. Plant Soil 1984, 1: 33 -38 Water word in die grond deur kapillere-en adsorpsiekragte vasgehou. Hierdie kragte word hoofsaaklik deur die klei-inhoud en mineralogie van grond bepaal. Indien die invloed van kleimineralogie uitgelaat word by beraming van die waterhouvermoe van die grond, word net 'n gedeelte van die kragte in ag geneem. Dit is gerieflik om 'n maklik-meetbare grondeienskap te gebruik om die invloed van kleimineralogie te kwantifiseer. In hierdie studie is die katione-uitruilvermoe (KUV) van grond as 'n aanduiding van die kleimineralogie gebruik. 'n Totaal van 320 grondmonsters uit die Hoeveldstreek is ontleed vir waterretensie. Die gronde se waterinhoud by 'n matrikspotensiaal van -33 kPa, -1 500 kPa en die verskil in waterinhoud by -33 kPa en -1 500 kPa (t:..W) is met verskillende parameters gekorreleer. Die waterretensie van versteurde gronde kan meer akkuraat voorspel word indien KUV in ag geneem word. Die meervoudige korrelasiekoeffisiente van KUV (me/100 9 grond) en klei-inhoud, met die grondwaterinhoud by -33 kPa en -1 500 kPa, en met t:..W, is hoogs betekenisvol en is respektiewelik 0,97, 0,96 en 0,91. S.-Afr. Tydskr. Plant Grand 1984, 1: 33-38

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Effect of Soil Water Potential and Bulk Density on Water Uptake Patterns and Resistance to Flow of Water in Wheat Plants

Abstract: Water uptake patterns of wheat plants were creased water potential decreased, water uptake in-

Cited by 17 publications

References 6 publications

Slope position and subsoiling effects on soil water and spring wheat yield

Slope position and subsoiling effects on soil water and spring wheat yield

A Field Study of Plant Resistance to Water Flow in Alfalfa¹

Relationship between cation exchange capacity, clay content and water retention of Highveld soils

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Effect of Soil Water Potential and Bulk Density on Water Uptake Patterns and Resistance to Flow of Water in Wheat Plants

Abstract: Water uptake patterns of wheat plants were creased water potential decreased, water uptake in-

Cited by 17 publications

References 6 publications

Slope position and subsoiling effects on soil water and spring wheat yield

Slope position and subsoiling effects on soil water and spring wheat yield

A Field Study of Plant Resistance to Water Flow in Alfalfa1

Relationship between cation exchange capacity, clay content and water retention of Highveld soils

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A Field Study of Plant Resistance to Water Flow in Alfalfa¹