PATTERNS OF NUTRIENT AVAILABILITY AND EXCHANGEABLE ALUMINUM AFFECTED BY COMPOST AND DOLOMITE IN RED ACID SOILS IN LAMPUNG, INDONESIA

The severity of bean root rot caused by Fusarium solani f. sp. phaseoli in vitro was studied with regard to exchangeable soil aluminum for 25 soil samples collected from northeastern Honshyu island, Japan. Of these, 24 were Andosols, typically acidic and of volcanic ash origin. Disease severity was assessed based on the number of lesions produced by the pathogen on a 6-cm section of bean stem buried and incubated for 8 days at 25°C in artificially infested soil samples. The number of lesions differed considerably among soil samples. In all soils in which disease incidence was very low, macroconidial germination was strongly inhibited. The inhibition was observed in all soil samples with exchangeable aluminum contents of at least 0.4 meq/100 g of soil, although it is unclear if this concentration is the lowest limit for inhibition. When soil pH was 5.6 or lower, higher amounts of exchangeable aluminum were detected from soils in which the major clay mineralogy was chloritized 2:1 minerals, while no or limited amounts of aluminum were detected from soils in which the major clay mineralogy was allophane/imogolite. Macroconidial germination and disease incidence are thus closely related to clay mineralogy, which regulates the behavior of exchangeable aluminum.

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Production of soybean and maize plants cultivated in acid soils with high contents of exchangeable aluminum

Revista Brasileira de Ciências Agrárias - Brazilian Journal of Agricultural Sciences ◽

10.5039/agraria.v14i3a6529 ◽

2019 ◽

Vol 14 (3) ◽

pp. 1-11

Author(s):

G.O.M. Cunha ◽

J.A. Almeida ◽

P.R. Ernani ◽

C.A. Souza ◽

L.C. Gatiboni ◽

...

Keyword(s):

Acid Soils ◽

Exchangeable Aluminum ◽

Maize Plants

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WATER-SOLUBLE AND EXCHANGEABLE ALUMINUM IN ACID SOILS AS AFFECTED BY LIMING AND FERTILIZATION

Canadian Journal of Soil Science ◽

10.4141/cjss67-032 ◽

1967 ◽

Vol 47 (3) ◽

pp. 203-210 ◽

Cited By ~ 12

Author(s):

L. B. MacLeod ◽

L. P. Jackson

Keyword(s):

Soil Ph ◽

Surface Soil ◽

Acid Soils ◽

Water Soluble ◽

Ph Values ◽

Exchangeable Al ◽

Exchangeable Aluminum ◽

High Fertilization ◽

Surface Soil Ph ◽

Representative Samples

The concentration of water-soluble and exchangeable aluminum was determined in the 0–15-, 15–23-, 23–30- and 30–45-cm depths of a Podzol limed to provide surface soil pH values ranging from 4.5 to 7.2. Both soluble and exchangeable Al decreased with increasing soil pH. Soluble Al ranged from 5.7 ppm at pH 4.4 with high fertilization to 0.3 ppm at pH 6.5 with similar fertilization. Increasing the rate of fertilization at pH 4.5 raised the soluble Al from 2.6 to 5.7 ppm. Fertilization still doubled the soluble Al in soil at pH 5.1 but had little effect as the pH was raised further to 5.8 and 6.5. Soluble Al in the subsoil samples was less than in surface soil samples at the same pH, while with exchangeable Al, the concentration was greater in the subsoil than in the surface soil samples.There was not a direct relationship between pH and soluble Al, although the highest soluble Al concentrations occurred at lowest soil pH levels. Analyses of 30 representative samples of surface soil taken from farmers' fields showed that the soluble Al concentration at pH 4.0 ranged from 3.5 to 4.8 ppm, while at a pH of 5.0 it ranged from 0.2 to 2.8 ppm. The concentrations of soluble Al in many of these soils exceeded the levels previously shown by nutrient solution experiments to severely restrict growth of legumes and some varieties of barley.

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Chemical attributes of an Argisoil of the Vale do São Francisco after melon growth with phosphate and potash rocks biofertilizers

Horticultura Brasileira ◽

10.1590/s0102-05362009000400008 ◽

2009 ◽

Vol 27 (4) ◽

pp. 447-452 ◽

Cited By ~ 3

Author(s):

Newton P Stamford ◽

Patrícia M Moura ◽

Mário A Lira Júnior ◽

Carolina Etienne de RS Santos ◽

Luíza Helena Duenhas ◽

...

Keyword(s):

Potassium Chloride ◽

Nutrient Availability ◽

Block Design ◽

Acid Soils ◽

Residual Effect ◽

Fertilizer Application ◽

Control Treatment ◽

Soil Reaction ◽

Sodic Soils ◽

Chemical Attributes

Fertilizer application may promote significant changes in soil reaction and on the availability of important nutrients for plants. The utilization of rock biofertilizers is a practical process that reduces energy consumption and increases nutrient availability in soils. In a field experiment, the effect of biofertilizers produced with phosphate and potash rocks plus Acidithiobacillus inoculation were evaluated on the chemical attributes of an Argisoil from the São Francisco Valley, Pernambuco State, Brazil, after melon cultivation. The experiment was arranged in a factorial 3²+2 scheme in randomized block design, with four replicates. Two sources of P biofertilizer (PB) and K biofertilizer (KB) were applied in the same doses recommended for simple superphosphate (SS) and potassium chloride (KCl), and in doses which corresponded to two and three times the recommended ones. Additional treatments were carried out (soluble fertilizers (SS) and potassium chloride KCl), applied in the recommended dose, and control treatment with no addition of P and K (P0+K0)). Biofertilizers reduced soil pH and higher available P and K values were obtained when higher doses of biofertilizers (PB and KB) were applied. Mg content increased when KB biofertilizers were applied in higher rates, probably due to the solubilization of Mg present in the biotite. The rock biofertilizers with Acidithiobacillus may be recommended as an alternative to soluble fertilizers by the residual effect in nutrient availability, especially in sodic soils or in limed acid soils.

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Exchangeable aluminum evaluation in acid soils

Scientia Agricola ◽

10.1590/s0103-90162003000300020 ◽

2003 ◽

Vol 60 (3) ◽

pp. 543-548 ◽

Cited By ~ 21

Author(s):

Cassio Hamilton Abreu Jr. ◽

Takashi Muraoka ◽

André Fernando Lavorante

Keyword(s):

Agricultural Production ◽

Acid Soils ◽

Soil Samples ◽

Titration Method ◽

Surface Samples ◽

Exchangeable Aluminum ◽

Back Titration ◽

Determination Methods ◽

Very High ◽

Colorimetric Methods

One of the main factors limiting agricultural production in tropical climate regions is mainly related to the presence of exchangeable aluminum (Al3+) in highly weathered acid soils. Four methods of Al3+ determination extracted with neutral 1 mol L¹ KCl solution were evaluated: three colorimetric methods (aluminon plus ascorbic acid, and eriochrome cyanine R by FIA) and the usual titrimetric method with back-titration. Surface samples from 20 soils of different Brazilian regions, with active acidity (0.01 mol L¹ CaCl2 pH) ranging from very high to medium (3.82 to 5.52), were used. The variance analysis revealed significant interaction among Al3+ determination methods and soil. Mean methods comparisons within each soil (Tukey, P < 0.05) indicated that, for most of the soils, the methods differed among each other, although there were high correlations between the obtained values. Al3+ values determined for soil samples by titration varied between 0.15 and 14.71 mmol c dm³. The colorimetric methods showed higher values than the titration method, mainly for those with aluminon (up to 18.75 mmol c dm-3). The Al3+ contents of colorimetric methods correlated quadraticaly with the titration values, for the soil samples with Al3+ > 10 mmol c dm³. Among colorimetric methods, in operational terms, the eriochrome with FIA method presented analytical performance up to 50 samples per hour, easiness and sensibility for routine Al analysis in soil samples. However, due to the specificity, the titration/back-titration method should be used, despite the moroseness, when the Al3+ ions are the objective.

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