scholarly journals EFFECT OF ALTERNATIVE MULTINUTRIENT SOURCES ON SOIL CHEMICAL PROPERTIES

2015 ◽  
Vol 39 (1) ◽  
pp. 194-204 ◽  
Author(s):  
Vanessa Martins ◽  
Douglas Ramos Guelfi Silva ◽  
Giuliano Marchi ◽  
Maurício Cunha Almeida Leite ◽  
Éder de Souza Martins ◽  
...  
Keyword(s):  
Ultramafic Rock ◽  
Chemical Properties ◽  
Mining Waste ◽  
Soil Chemical Properties ◽  
High Price ◽  
Rock Powder ◽  
Nutrient Sources ◽  
Rock Mining ◽  
Variable Chemical ◽  
Alternative Sources

The current high price of potassium chloride and the dependence of Brazil on imported materials to supply the domestic demand call for studies evaluating the efficiency of alternative sources of nutrients. The aim of this work was to evaluate the effect of silicate rock powder and a manganese mining by-product, and secondary materials originated from these two materials, on soil chemical properties and on brachiaria production. This greenhouse experiment was conducted in pots with 5 kg of soil (Latossolo Vermelho-Amarelo distrófico - Oxisol). The alternative nutrient sources were: verdete, verdete treated with NH4OH, phonolite, ultramafic rock, mining waste and the proportion of 75 % of these K fertilizers and 25 % lime. Mixtures containing 25 % of lime were heated at 800 ºC for 1 h. These sources were applied at rates of 0, 150, 300, 450 and 600 kg ha-1 K2O, and incubated for 45 days. The mixtures of heated silicate rocks with lime promoted higher increases in soil pH in decreasing order: ultramafic rock>verdete>phonolite>mining waste. Applying the mining waste-lime mixture increased soil exchangeable K, and available P when ultramafic rock was incorporated. When ultramafic rock was applied, the release of Ca2+ increased significantly. Mining subproduct released the highest amount of Zn2+ and Mn2+ to the soil. The application of alternative sources of K, with variable chemical composition, altered the nutrient availability and soil chemical properties, improving mainly plant development and K plant uptake, and are important nutrient sources.

scholarly journals Characterization and nutrient release from silicate rocks and influence on chemical changes in soil

2012 ◽  
Vol 36 (3) ◽  
pp. 951-962 ◽  
Author(s):  
Douglas Ramos Guelfi Silva ◽  
Giuliano Marchi ◽  
Carlos Roberto Spehar ◽  
Luiz Roberto Guimarães Guilherme ◽  
Thomaz Adolpho Rein ◽  
...  
Keyword(s):  
Ultramafic Rock ◽  
Chemical Properties ◽  
Nutrient Release ◽  
Exchange Capacity ◽  
Silicate Rock ◽  
Nutrient Sources ◽  
Alternative Rock ◽  
Rock Types ◽  
Nickel Copper ◽  
Silicate Rocks

The expansion of Brazilian agriculture has led to a heavy dependence on imported fertilizers to ensure the supply of the growing food demand. This fact has contributed to a growing interest in alternative nutrient sources, such as ground silicate rocks. It is necessary, however, to know the potential of nutrient release and changes these materials can cause in soils. The purpose of this study was to characterize six silicate rocks and evaluate their effects on the chemical properties of treated soil, assessed by chemical extractants after greenhouse incubation. The experimental design consisted of completely randomized plots, in a 3 x 6 factorial scheme, with four replications. The factors were potassium levels (0-control: without silicate rock application; 200; 400; 600 kg ha-1 of K2O), supplied as six silicate rock types (breccia, biotite schist, ultramafic rock, phlogopite schist and two types of mining waste). The chemical, physical and mineralogical properties of the alternative rock fertilizers were characterized. Treatments were applied to a dystrophic Red-Yellow Oxisol (Ferralsol), which was incubated for 100 days, at 70 % (w/w) moisture in 3.7 kg/pots. The soil was evaluated for pH; calcium and magnesium were extracted with KCl 1 mol L-1; potassium, phosphorus and sodium by Mehlich 1; nickel, copper and zinc with DTPA; and the saturation of the cation exchange capacity was calculated for aluminum, calcium, magnesium, potassium, and sodium, and overall base saturation. The alternative fertilizers affected soil chemical properties. Ultramafic rock and Chapada mining byproduct (CMB) were the silicate rocks that most influenced soil pH, while the mining byproduct (MB) led to high K levels. Zinc availability was highest in the treatments with mining byproduct and Cu in soil fertilized with Chapada and mining byproduct.

scholarly journals Soil chemical properties after 12 years of tillage and crop rotation

2020 ◽  
Vol 112 (5) ◽  
pp. 4395-4406
Author(s):  
Maysoon M. Mikha ◽  
Gary W. Hergert ◽  
Xin Qiao ◽  
Bijesh Maharjan
Keyword(s):  
Crop Rotation ◽  
Chemical Properties ◽  
Soil Chemical Properties

Short-Term Sustainability of Drainage Water Reuse: Spatio-Temporal Impacts on Soil Chemical Properties

2008 ◽  
Vol 37 (S5) ◽  
pp. S-8-S-24 ◽  
Author(s):  
Dennis L. Corwin ◽  
Scott M. Lesch ◽  
James D. Oster ◽  
Stephen R. Kaffka
Keyword(s):  
Water Reuse ◽  
Chemical Properties ◽  
Drainage Water ◽  
Soil Chemical Properties ◽  
Short Term ◽  
Spatio Temporal ◽  
Drainage Water Reuse

scholarly journals NaCl- and Na2SO4-Induced Salinity Differentially Affect Clay Soil Chemical Properties and Yield Components of Two Rice Cultivars (Oryza sativa L.) in Burundi

Agronomy ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 571
Author(s):  
Willy Irakoze ◽  
Hermann Prodjinoto ◽  
Séverin Nijimbere ◽  
Jean Berchmans Bizimana ◽  
Joseph Bigirimana ◽  
...  
Keyword(s):  
Oryza Sativa L ◽  
Stomatal Density ◽  
Tap Water ◽  
Chemical Properties ◽  
Soil Chemical Properties ◽  
Control Treatment ◽  
Saline Stress ◽  
Plant Responses ◽  
Rice Grain ◽  
Resistance Level

Salinity may strongly influence the interaction between plant roots and surrounding soil, but this has been poorly studied for sodium sulfate (Na2SO4). The aim of this study was to investigate the effect of sodium chloride (NaCl) and Na2SO4 salinities on the soil chemical properties as well as rice physiological- and yield-related parameters of two contrasted cultivars (V14 (salt-sensitive) and Pokkali (salt-resistant)). Pot experiments were conducted using soil and electrolyte solutions, namely NaCl and Na2SO4, inducing two electrical conductivity levels (EC: 5 or 10 dS m−1) of the soil solutions. The control treatment was water with salt-free tap water. Our results showed that soil pH increased under Na2SO4 salinity, while soil EC increased as the level of saline stress increased. Salinity induced an increase in Na+ concentrations on solid soil complex and in soil solution. NaCl reduced the stomatal density in salt-sensitive cultivar. The total protein contents in rice grain were higher in V14 than in Pokkali cultivar. Saline stress significantly affected all yield-related parameters and NaCl was more toxic than Na2SO4 for most of the studied parameters. Pokkali exhibited a higher tolerance to saline stress than V14, whatever the considered type of salt. It is concluded that different types of salts differently influence soil properties and plant responses and that those differences partly depend on the salt-resistance level of the considered cultivar.

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