The effect of lime on phosphorus adsorption and barley growth in three acid soils

Anjos, J. T. dos; Rowell, David

doi:10.1007/bf02370670

Cited by 28 publications

(15 citation statements)

References 14 publications

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“…The possibility of soil contamination on the root surfaces must be considered, but care was taken to wash the roots thoroughly. Similar results were found for barley by Anjos (1987). It seems that A1 is taken up from sources other than Kexchangeable A1.…”

Section: The Pot Experimentssupporting

confidence: 90%

The effects of lime and phosphorus on the function of wheat roots in acid top soils and subsoils

Miranda

Rowell

1987

Plant Soil

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Two wheat varieties with differing aluminium tolerance were grown in pots of acid soil. Liming did not change significantly the amounts of chemically extractable P and K, but caused improved vegetative growth, increased inflow of P and K and reduced uptake of AI. Without lime, roots had a higher content and concentration of P than shoots; liming reversed this. Without lime the sensitive variety with a shorter root length had an AI inflow ten times that of the tolerant one: tolerance involves a mechanism for exlcuding AI. The inflow of P per unit inflow of A1 (mol ratio) without lime was three times greater for the tolerant variety which therefore has more P to counteract the effects of A1.The same varieties were grown in two-layer soil columns, with a low P status and a limed topsoil and acid subsoil. Liming the subsoil improved plant growth but this was still restricted by low P availability. Addition of P to the topsoil caused good growth regardless of subsoil acidity: root growth increased in both layers and P (labelled with 32p) taken up from the topsoil was translocated to roots in the subsoil. This P inactivated root AI and allowed the roots to grow and take up more P from the acid subsoil with however a reduction in inflow. The sensitive variety was affected more by the acid subsoil and low P availability, had a similar ability to translocate P to subsoil roots but could not attain the growth rate of the tolerant wheat even with P and lime.

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Section: The Pot Experimentssupporting

confidence: 90%

The effects of lime and phosphorus on the function of wheat roots in acid top soils and subsoils

Miranda

Rowell

1987

Plant Soil

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“…Liming three acid soils from southern Brazil increased the P sorption up to a pH of 5.0, at which point P sorption decreased (Anjos & Rowell, 1987). Raising the pH of a Cerrado Oxisol with an initial pH of 4.5 also reduced P sorption by 18 to 24 % (Smyth & Sanchez, 1980).…”

Section: Introductionmentioning

confidence: 99%

Influence of soil pH on inorganic phosphorus sorption and desorption in a humid brazilian Ultisol

Sato

Comerford²

2005

Rev. Bras. Ciênc. Solo

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SUMMARYLiming is a common practice to raise soil pH and increase phosphorus (P) bioavailability in tropical regions. However, reports on the effect of liming on P sorption and bioavailability are controversial. The process of phosphorus desorption is more important than P sorption for defining P bioavailability. However few studies on the relationship between soil pH and P desorption are available, and even fewer in the tropical soils. The effects of soil pH on P sorption and desorption in an Ultisol from Bahia, Brazil, were investigated in this study. Phosphorus sorption decreased by up to 21 and 34 % with pH increases from 4.7 to 5.9 and 7.0, respectively. Decreasing Langmuir K parameter and decreasing partition coefficients (K d ) with increasing pH supported this trend. Phosphorus desorption was positively affected by increased soil pH by both the total amount of P desorbed and the ratio of desorbed P to initially sorbed P. A decreased K parameter and increased K d value, particularly at the highest pH value and highest P-addition level, endorsed this phenomenon. Liming the soil had the double effect of reducing P sorption (up to 4.5 kg ha -1 of remaining P in solution) and enhancing P desorption (up to 2.7 kg ha -1 of additionally released P into solution).Index terms: liming, phosphorus bioavailability, Langmuir, partition coefficients, and Atlantic Forest.(

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“…With soil pH in the optimum band, it was not expected that significant growth responses would occur. Similar reasons have been given for increased root growth in barley (29) and wheat (30). These responses were considered to be through a combination of increases in soil pH, extractable Ca and decreased extractable Al and Mn, as suggested by Hillard et al (28).…”

Section: Tye Fullen and Hockingmentioning

confidence: 78%

Mode of Action of Calcified Seaweed on Grassland

Tye

Fullen

Hocking

2001

Communications in Soil Science and Plant Analysis

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Calcified seaweed, the particulate remains of a calcareous red algae, is used as a soil conditioner; but little is known of its effects. Two glasshouse pot experiments examined the effects of calcified seaweed application on a Hapludalf (Salwick series sandy silt loam) and Lolium perenne. Experiment 1 examined the effects of different particle sizes of calcified seaweed on soil pH. Particle size analysis showed that 81.59% of particles were 1-4 mm in diameter. Significant (PϽ0.05) increases in soil pH were only found after the application of particles Ͻ1 mm in diameter. Experiment 2 aimed to elucidate the modes of action of calcified seaweed on soil and Lolium perenne. Apparent increases were found in shoot and root growth after calcified seaweed application. Results demonstrated that localized changes in soil pH were established, which reflected application rate and particle size distribution. Subsequent changes in shoot elemental composition were a function of these 311 ORDER REPRINTS localized pH changes. Due to the high CaCO 3 content of calcified seaweed, changes in nutrient availability were primarily due to the addition of CaCO 3 and subsequent soil pH changes. Overall, the effect of calcified seaweed on soils and plants was dependent on application rate, particle size distribution and rate of nutrient release. A continuum in mode of action appeared to exist with application rate. At the low application rate (0.63 t ha Ϫ1 ) calcified seaweed appeared to act as a calcium (Ca)-based soil conditioner. At higher application rates, the effects were similar to those associated with calcitic lime.

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The effect of lime on phosphorus adsorption and barley growth in three acid soils

Cited by 28 publications

References 14 publications

The effects of lime and phosphorus on the function of wheat roots in acid top soils and subsoils

The effects of lime and phosphorus on the function of wheat roots in acid top soils and subsoils

Influence of soil pH on inorganic phosphorus sorption and desorption in a humid brazilian Ultisol

Mode of Action of Calcified Seaweed on Grassland

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