EFFECT OF PH ON THE DEVELOPMENT OF LEUCADENDRON ÂSAFARI SUNSETâ

Canmore-Neumann, R.; Silber, A.; Mitchnick, B.; Gilad, S.; Ben-Jaacov, J.

doi:10.17660/actahortic.1997.453.4

Cited by 4 publications

(3 citation statements)

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“…The reductions in total seedling dry weights with increasing pH levels were largely due to the decreases in root dry weights resulting in the higher shoot to root dry weight ratios. High root zone pH can affect root growth by inhibiting root cell elongation and the formation of lateral roots and root hairs (Tang et al, 1993c;Canmore-Neumann et al, 1996). The decreases in dry weights at high pH were accompanied by the decreases in total chlorophyll concentrations, chlorophyll a:b ratios, and reductions in E and Pn, which are commonly affected in plants by high pH (Zhang et al, 2013).…”

Section: Discussionmentioning

confidence: 99%

Responses of jack pine (Pinus banksiana) seedlings to root zone pH and calcium

Zhang

Feng

Zwiazek

2015

Environmental and Experimental Botany

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Section: Discussionmentioning

confidence: 99%

Responses of jack pine (Pinus banksiana) seedlings to root zone pH and calcium

Zhang

Feng

Zwiazek

2015

Environmental and Experimental Botany

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“…Tang et al (1993b) observed that the elongation of the roots of Lupinus angustifolius L. was particularly sensitive to increases in pH and that this decrease in root elongation was caused primarily by a decrease in cell elongation rather than cell division. The formation of lateral roots and root hairs is also delayed in high pH soils (Canmore-Neumann et al, 1997;Tang et al, 1993a).…”

Section: Introductionmentioning

confidence: 99%

Control of nutrient solutions for studies at high pH

Kopittke

Menzies

2005

Plant Soil

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Little is known about factors effecting plant growth at high pH, with research often limited by the inability to separate nutritional deficiencies and HCO − 3 toxicity from the direct limitations imposed under high pH conditions. Various methods of controlling dilute nutrient solutions for studies at high pH were investigated. For short-term studies, it was found that a solution without Cu, Fe, Mn and Zn and aerated with CO 2 depleted air, greatly reduced nutrient precipitation at high pH, thus eliminating nutritional differences between treatments. Manual pH adjustment and the use of ion exchange resins as pH buffers were unsuitable methods of pH control. However, pH control by automated titration had little effect on solution composition while maintaining constant pH. The system described is suitable for studies in which the pH of the bulk nutrient solution must be maintained. The system was used to examine OH − toxicity in mungbeans (Vigna radiata (L.) Wilczek cv. Emerald), with root length reduced at a bulk solution pH of 8.5 and greater.Abbreviations: DI -deionised; EC -electrical conductivity; ICPAES-inductively coupled plasma atomic emission spectroscopy; LSD -least significant difference.

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“…High root zone pH can inhibit root cell elongation and the formation of lateral roots and root hairs (Canmore‐Neumann et al, 1996; Tang et al, 1993; Zhang et al, 2015). It is thought that plants absorb soil P mainly through root hairs and root tips (Gahoonia et al, 1997; Raghothama, 1999).…”

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confidence: 99%

Responses of Reclamation Plants to High Root Zone pH: Effects of Phosphorus and Calcium Availability

Zhang

Zwiazek

2016

J of Env Quality

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Low phosphorus (P) availability and high pH inhibit plant growth in calcareous soils and some oil sands reclamation sites in northeastern Alberta, Canada. In this study, we used a split-root hydroponic setup to test the effects of supplemental P with different calcium (Ca) concentrations and root-zone pH conditions on the growth and physiological response of trees commonly found in the region: paper birch ( Marsh.), trembling aspen ( Michx.), green alder [ (Chaix) DC.], and black spruce [ (Mill.) Britton, Sterns & Poggenb.] seedlings. Plant roots were divided and treated with different combinations of P (0.5 and 15 mmol L), Ca (2 and 50 mmol L), and pH (5.0 and 9.0) for 6 wk. After that time, we measured seedling height, net photosynthesis and transpiration rates, and the concentration of chlorophyll and different elements in the leaves. Plant responses varied between species; black spruce was most resistant to high pH and high Ca concentrations. We did not find any strong beneficial effects of adding P to plants subjected to high root zone pH and high Ca concentration. However, exposure of part of the root system to low pH alleviated the effects of high pH, likely through the improved supply of micronutrients. Because pH conditions are often not uniform in disturbed sites and reclamation soils, our findings may help improve potential reclamation and phytoremediation strategies for the oil sands, bauxite, and coal-combustion residue utilization industries.

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EFFECT OF PH ON THE DEVELOPMENT OF LEUCADENDRON ÂSAFARI SUNSETâ

Cited by 4 publications

References 0 publications

Responses of jack pine (Pinus banksiana) seedlings to root zone pH and calcium

Responses of jack pine (Pinus banksiana) seedlings to root zone pH and calcium

Control of nutrient solutions for studies at high pH

Responses of Reclamation Plants to High Root Zone pH: Effects of Phosphorus and Calcium Availability

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EFFECT OF PH ON THE DEVELOPMENT OF LEUCADENDRON ÂSAFARI SUNSETâ

Cited by 4 publications

References 0 publications

Responses of jack pine (Pinus banksiana) seedlings to root zone pH and calcium

Responses of jack pine (Pinus banksiana) seedlings to root zone pH and calcium

Control of nutrient solutions for studies at high pH

Responses of Reclamation Plants to High Root Zone pH: Effects of Phosphorus and Calcium Availability

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Product

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EFFECT OF PH ON THE DEVELOPMENT OF LEUCADENDRON ÂSAFARI SUNSETâ