Correct Soil Acidity Research Articles

Liming on the growth and production of essential oil of basil grown in different light environments

Studies about the influence of agronomic factors in the growing and production of secondary metabolites of basil plants are scarce. Among the existing factors, the soil fertility and the light quality has a great influence in the vegetative production of this group of plants. This study aims to evaluate the impacts of different combinations of light quality and the absence and presence of liming on growth, content and yield of essential basil oil. The experimental design was completely randomized in a 5x2 factorial design arranged in subdivided plots. Five light environments were used: black mesh, thermo-reflective mesh, blue mesh, red mesh, and full sun, and two soil acidity correction conditions. We performed the analysis of plants growth at 50 days after thinning (DAT), besides the determination of the essential oil content and yield. We observed significant interaction between the light environment and the soil acidity correction for the variables root volume and dry mass, and trunk dry mass. Regarding the essential oil production, the greater content and yield were obtained in plats grown under thermo-reflective mesh and with limestone application, increasing the soil base saturation. The basil plants are influenced by the light quality and limestone application on the growth, and essential oil content and yield.

Mineral, organic, and organomineral fertilization associated with base saturation in Vigna unguiculata cultivation

ABSTRACT Eucalyptus spp. wood ash, as fertilizer, can be used for agriculture sustainability and the mitigation of production costs especially among small farmers who grow cowpea (Vigna unguiculata L.). The objective was to evaluate effects of fertilizers, mineral, organic (wood ash), and organomineral (organic+mineral) combined with base saturations of 30 or 60%, on growth and development of cowpea. Use of wood ash, alone and combined with mineral fertilizer, corrected soil acidity upward and increased shoot growth, nodule numbers, and water use efficiency. Wood ash may be an alternative fertilizer in cowpea production.

EUCALYPTUS INICIAL GROWTH ON HUMIC CAMBISOL WITH APPLICATION OF LIMESTONE, GYPSUM, AND LIME MUD

The high demand for forest products in Brazil estimates a 2 million hectares increase in reforestation areas over the next 10 years, highlighting Eucalyptus species. However, these crops usually occur in acid soils that need correction to achieve high productivity. Besides limestone, lime mud, a residue from the cellulose industry, and gypsum can also be used as correctives, but there are doubts about doses and ways of application with the best results. Thus, were evaluated the soil chemical attributes, foliar nutrient content, and initial growth of a Eucalyptus dunnii Maiden crop in response to the application of limestone, lime mud, and gypsum in different doses and ways of applications, on a Humic Cambisol from Santa Catarina Plateau. The experiment was carried out with nine treatments in four replicates, where the evaluated parameters were determined up to 24 months after planting. In general, both limestone, lime mud, and gypsum, in different doses and ways of application, affected the chemical attributes of the soil but did not affect the foliar nutrient content at 12 months, height, and diameter at breast high (DBH) from trees and timber volume at 24 months. Gypsum do not correct soil acidity but lime mud provides similar results to limestone indicating that can substitute this corrective without damage to nutritional status and initial development of Eucalyptus dunnii.

Camu-Camu: Nutrient Omission Response and Soil Acidity Correction

Camu-camu is an Amazonian fruit that has high levels of vitamin C, however, there is a need to expand knowledge to carry out systematic and consistent studies in the various fields of knowledge, and those related to mineral nutrition. The objective of this work was to evaluate the nutritional and growth status of camu-camu by the missing element technique and the use of liming, using as substratum a dystrophic Yellow Latosol of central Amazonian texture. The experimental design was a randomized block design with four replications and 15 treatments: complete, liming omission, individual omission of N, P, K, Ca, Mg, S, Zn, Mn, Cu, B, Cl and Mo. of the witness (natural soil). The characteristics evaluated were: height, neck diameter, leaf, stem, shoot, root and total dry matter, relative growth, shoot and root ratio, and nutrient accumulation of shoot (leaf) dry matter. All data evaluated were statistically significant. Liming and fertilization were necessary for acidic and low natural soils when comparing the complete with the control. Ca and P were the most limiting nutrients, while omission of N reduced the growth of seedlings. Based on total dry matter, the nutritional requirement of camu-camu was in decreasing order: Ca > P > S > Cl > Cu > Mg > Z > K > Mo > Mn > B > N.

MINING RESIDUE IN THE COMMERCIAL LIMESTONE BLENDING AND THE CHEMICAL ATTRIBUTES OF A LATOSOL

The limestone mining activity causes environmental impacts due to the generation of waste. However, the reuse of these residues has been investigated with the objective of improving soil fertility and acidity correction. The objective of this work was to evaluate the potential for using mining residues in the commercial limestone blending and in the chemical attributes of a dystrophic Red Yellow Latosol. The experiment was carried out in three steps: the first corresponded to the sampling and characterization of the residues in the tailings pile; the second was the combination and characterization of the new soil acidity correction agents as well as the selection of treatments based on the Neutralization Power and doses of soil acidity correction agetns (0.0; 0.5; 1.0; 2.0; 4.0 t ha-1); in the third step, a test of the incubation and calibration of the application doses of the soil acidity correction agents was performed. It was found that even with the raise in the levels of Ca2+ and Mg2+ in the correction agents, it was not possible to provide an optimal supply of nutrients to the soil, a fact explained by the low constant solubility of CaCO3 and MgCO3. However, the commercial limestone blending with tailing was efficient, as it had a significant effect on raising the pH and neutralizing the soil moisture potential.

Biodegradation of Soybean Biodiesel Generates Toxic Metabolites in Soil

Biodiesel is a mixture of fatty acid methyl esters (FAME) from either vegetable oils or animal fats. Although biodiesel biodegrades faster than diesel fuel, the impacts of this biofuel in environment throughout its biodegradation process should be investigated. For this reason, the objective of the present study was to evaluate the microbial activity, the phytotoxicity, and the formation of metabolites during biodegradation of the contaminated soil with biodiesel. Microbial activity was evaluated using culture-dependent methods in soil samples artificially contaminated with biodiesel—followed by pH adjustments. The formation of metabolites during biodegradation was identified using gas chromatography coupled with mass spectrometry (GC/MS). Respirometric method was also applied to evaluate total microbial activity. Seeds of Cucumis sativus were sown in soil samples before and after biodegradation to expand our knowledge on the impacts of such metabolites in a eukaryotic test-organism. Culture-dependent assays successfully allowed the quantification of microorganisms during biodegradation. According to CO2 production, biodiesel initially acted as a biostimulation agent increasing microbial activity. Indigenous microbiota degraded biodiesel into smaller compounds such as pentane, free fatty acids, and methanol. Soil pH significantly dropped from 5.4 to 3.0 after 120 days of biodegradation as a result of high concentration of free fatty acids. These free fatty acids inhibited further microbial growth after biodegradation. It was proposed that correcting soil acidity during biodegradation would be enough to sustain microbial growth. However, pH decrease was just one of the factors that inhibited microbial growth and plant root development. It was proposed that biodegradation yielded toxic metabolites such as methanol. These metabolites contributed to impair the root elongation due to alcohol-specific properties to solubilize a wide variety of lipids within the seed. Therefore, the present study draws attention to metabolites from biodegradation of biodiesel and their potentially harmful environmental impacts. Biodegradation of biodiesel changes soil pH, as it generates metabolites that are phytotoxic, and reduces microbial counts (CFU g−1 dry soil).

Liquid limestone in the acidity correction of a Dystric Cambisol for Brachiaria production in Humaitá, Amazonas.

Conventional solid limestone most commonly used in agriculture generally has disadvantages in handling, in addition to a certain infeasibility for small producers when compared to the use of liquid limestone with high purity and reactivity. Therefore, a better understanding of the dynamics of liquid limestone employed in soil acidity correction is important. Thus, this work proposes the use of liquid limestone to correct the acidity of a Dystric Cambisol in pasture cultivation in Humaitá, AM. An experiment was carried out in a greenhouse, where plastic pots were prepared for sowing Brachiaria brizantha, in a randomized block design with five treatments and four replications (T1 = witness, T2 = 2.5 L, T3 = 5 L, T4 = 10 L and T5 with common limestone). After 90 days of planting, the shoot and root size of both fresh and dry mass of each treatment were evaluated, as well as the number of tillers. The tillering of B. brizantha was highly responsive to the addition of liquid and common limestone, so that the higher the dose, the greater the results. In contrast, the treatments for fresh and dry shoot and root biomass production did not differ significantly between themselves, explaining why the product is still not well accepted and used by dealers and farmers.

Corrección de la acidez del suelo: efectos en el crecimiento inicial del café.

La acidez del suelo ha sido considerada una limitante común para la producción de café en la mayoría de las regiones de Colombia. Esta investigación tuvo como objetivo determinar el efecto de la corrección de la acidez del suelo en el crecimiento inicial de café (Coffea arabica L.). Para cinco suelos representativos de la zona cafetera de Colombia y con valores de pH<5,2 se determinó el efecto de dosis crecientes de cal (0,00 1,25, 2,50, 5,00 y 10,00 g dm-3) en la biomasa seca total de las plantas, durante la fase de almácigo (seis meses). Con la aplicación de los tratamientos se logró corregir la acidez (pH y Al3+) e incrementar los contenidos de Ca2+ y Mg2+ en todos los suelos estudiados, presentando algunas variaciones entre estos. En tres de los suelos se presentó efecto de los tratamientos en la materia seca de las plantas, respuesta que se relacionó principalmente con el aumento del pH y la neutralización del Al+3. El mayor crecimiento de las plantas (rendimientos relativos entre el 95 y 100%) se asoció con los siguientes rangos de las propiedades e indicadores del suelo: pH 4,9-5,7, Ca2+ 5,1-11,2 cmolc kg-1, Mg2+ 0,9-2,1 cmolc kg-1, saturación de bases 21%-45%, Ca:Mg 4,4:1-7,4:1, Ca:K 7:1-37:1, Mg:K 1,4:1-4,8:1, Al3+ < 1,1 cmolc kg-1 y saturación de Al+3 < 12%.

Corrección de la acidez del suelo : alteraciones químicas del suelo

La alternativa más común para corregir la acidez del suelo consiste en el empleo de enmiendas calcáreas. El objetivo de esta investigación fue determinar el efecto del encalamiento en la fertilidad de algunos suelos representativos de la zona cafetera de Colombia. Se evaluaron las propiedades químicas de cinco suelos luego de un mes de incubación con cinco dosis de cal (0; 1,25; 2,50; 5,00 y 10,00 g dm-3). Los tratamientos afectaron diferencialmente a los suelos en su pH, Ca2+, Mg2+, CIC, Al3+, Fe2+, Mn2+, NO3-, saturación de bases y relación de bases intercambiables. El pH del suelo logró explicar con mayor ajuste las variaciones de Al3+ que el porcentaje de saturación de Al3+. La CIC, determinada mediante el acetato de amonio 1 M y con pH=7,0, no fue un método adecuado para determinar el efecto del encalamiento; caso contrario ocurrió con la solución no-tamponada de cloruro de bario. Se presentó una alta correlación entre el porcentaje de saturación de bases y el pH para cada suelo; sin embargo, no se encontró una tendencia que pudiera explicar las variaciones de todos los suelos de manera conjunta. Los cambios de la CIC, generados por el incremento del pH que ocasionó el encalamiento, estuvieron en función de los contenidos de la materia orgánica. Una parte de los contenidos de Ca y Mg determinados en el análisis del suelo correspondió a la fracción no intercambiable, resultado que se relacionó con la baja solubilidad de la cal y soporta su efecto residual.

Crescimento inicial de mudas de <em>Swietenia macrophylla</em> sob correção de acidez e adubação nitrogenada fosfatada

For a commercial reforestation success, it is necessary to know the species specific nutritional requirements used to overcome fertility limitations in a given site, allowing to fertility costs optimize in seedlings production. The objective of this study was to responses evaluate of Swietenia macrophylla King seedlings subject to nitrogen and phosphorus different dosages in corrected soil. The experiment was conducted between January and April 2015 in a greenhouse at the Universidade Federal do Recôncavo da Bahia, in Cruz das Almas (BA). The experimental design was a 5 x 2 factorial scheme (five different doses of phosphorus (Pn) in nitrogen absence and presence [N0 and N1]), making ten treatments, completely randomized. After 90 days of sowing, aerial part height (h) and stem based diameter of seedlings were measured. The data were submitted to variance analysis (ANOVA) at 5% error probability level. Treatments did not statically differ from each other, showing the same effect of P dosages with and without N on soil acidity correction with limestone (CaCO3) condition on initial growth of Swietenia macrophylla seedlings.

Recycled alkaline paper waste influenced growth and structure of Pinus taeda L. forest

Alkaline residues of recycled paper production (ARRP) can be an alternative for correcting soil acidity and adding bases to Pinus taeda L. systems. Our aim was to investigate the effect of increasing doses of ARRP on tree, forest floor (litter and root), and soil composition in a 3-year-old Brazilian pine forest plantation. In 2007, ARRP treatments of 0, 10, 20, 30 and 40 T ha−1 were imposed. Tree growth and needle elemental composition were evaluated in 2008 and 2018; elemental composition of the trunk was evaluated in 2018. In 2017, accumulation and composition of litter layers were assessed: new litter, old litter, first and second sublayers of fragmented litter (Fr and Fm), and the humified layer (H); roots present in F and H layers were quantified (amount and elemental composition). In addition, soil chemical properties at different depths were evaluated in 2008, 2012, and 2017. The application of ARRP improved growth by ~ 16% up to 20 T ha−1 after 10 years. Also, ARRP increased Ca concentration in needles, trunks, roots, and all litter fractions since Ca was a major component of ARRP. There was no change in total litter accumulation with ARRP application, but an increase in the humidified fraction was observed. Root growth was enhanced by ARRP, leading to great changes in root composition in Fr and H fractions. Changes in soil pH, Ca2+, and Al3+ were observed in the 0–10 cm soil layer. Findings suggest that application of ARRP to established pine forests has the potential for improving productivity.

Agricultural potential and soil use based on the pedogenetic properties of soils from the cerrado-caatinga transition

The sustainable use of soil requires a broad knowledge of its genesis, morphology, properties, and distribution in the landscape. Thus, the objective of this study was to characterize the pedogenetic attributes of representative soils from the cerrado-caatinga transition of the Gurguéia river basin to indicate their agricultural potential and limitations for the implementation of agroforestry systems. National and international soil classification systems were used to define the soil classes. The limiting factors and agricultural potential were characterized following the evaluation system of the agricultural potential of Brazilian land. In general, profiles 1, 3, 5, and 6 had a low nutrient budget and a sandy to loam texture. Profiles 2, 4, and 7 showed high clay content and nutrient budget. The soil profiles were classified as Ustic Quartzipsamments, Udic Haplusterts, Xanthic Haplustox, Arenic Kanhaplustults, Typic Haplustox, and Aridic Dystrustept based on their pedogenetic characteristics. Udic Haplusterts and Arenic Kanhaplustults soils display restrictions regarding the planting of forests owing to oxygen and soil depth limitations. The other soil classes had adequate physical properties for the implementation of agricultural systems and pastures, including good drainage and medium texture; however, they had low natural fertility, and thus require technologies for soil acidity correction and fertilization. Ustic Quartzipsamments and Ustic soils require the implementation of conservation systems, such as agroforestry, to avoid degradation.

Evaluation of the Effect of Dolomitic Lime Application on Pastures—Case Study in the Montado Mediterranean Ecosystem

The Montado ecosystem, predominant in the Mediterranean region, consists of poor soils, a sparse cover of cork and holm with an understory of natural biodiverse pastures, grazed by animals in extensive regime. The recommended procedure for increasing productivity of these pastures is based on the application of phosphate fertilizer. One of the main productivity-limiting factors is, however, associated with soil acidity. The objective of this work was to evaluate the simultaneous effect of the holm oak canopy and the application of dolomitic lime on the productivity and quality of a permanent biodiverse pasture, grazed by sheep, in an acid soil (pH = 5.4 ± 0.3). Pasture was monitored at the end of autumn 2018 and winter and spring 2019. The results show that amendment of soil acidity is a slow and gradual process that improves soil Mg/Mn ratio and has a positive impact on pasture productivity and quality. Pasture crude protein availability (CP, kg·ha−1), which is based on both pasture dry matter yield (kg·ha−1) and quality (CP, %), proved to be a very practical indicator of the contributions of tree canopy and soil acidity correction to the holistic management of the Montado ecosystem.

Can silicon applied to correct soil acidity in combination with Azospirillum brasilense inoculation improve nitrogen use efficiency in maize?

Alternative management practices are needed to minimize the need for chemical fertilizer use in non-leguminous cropping systems. The use of biological agents that can fix atmospheric N has shown potential to improve nutrient availability in grass crops. This research was developed to investigate if inoculation with Azospirillum brasilense in combination with silicon (Si) can enhance N use efficiency (NUE) in maize. The study was set up in a Rhodic Hapludox under a no-till system, in a completely randomized block design with four replicates. Treatments were tested in a full factorial design and included: i) five side dress N rates (0 to 200 kg ha-1); ii) two liming sources (Ca and Mg silicate and dolomitic limestone); and iii) with and without seed inoculation with A. brasilense. Inoculation with A. brasilense was found to increase grain yield by 15% when N was omitted and up to 10% when N was applied. Inoculation also increased N accumulation in plant tissue. Inoculation and limestone application were found to increase leaf chlorophyll index, number of grains per ear, harvest index, and NUE. Inoculation increased harvest index and NUE by 9.5 and 19.3%, respectively, compared with non-inoculated plots. Silicon application increased leaf chlorophyll index and N-leaf concentration. The combination of Si and inoculation provided greater Si-shoot accumulation. This study showed positive improvements in maize growth production parameters as a result of inoculation, but the potential benefits of Si use were less evident. Further research should be conducted under growing conditions that provide some level of biotic or abiotic stress to study the true potential of Si application.

Influence of Calcium Silicate on Soil Fertility and Corn Morphology

The objective of this study was to evaluate whether the development of corn (Zea mays) and soil fertility are influenced by the application of increasing doses of calcium silicate (CaSiO3) in substitution to limestone. The experiment was carried out under greenhouse conditions and the experimental design was in randomized blocks, in a 3x2+1 factorial arrangement and four replications. The factors were: doses of CaSiO3 (7.62 mg.dm-3, 19.05 mg.dm-3 and 38.09 mg.dm-3) and liming (absence and presence). The soil of the control treatment did not receive limestone or CaSiO3. At 21 days after emergence (DAE), it was found that the control treatment plants had significantly lower height and stem diameter. At 35 DAE was observed that using exclusively CaSiO3 promoted 6% higher stem height values. At 63 DAE, no oscillations were observed in the biomass of aerial part and root between liming and CaSiO3 doses (P>0.05). Using the limestone allied the silicate doses increased in higher concentration of Mg in the soil. The lowest dose of CaSiO3 reduced the concentrations of Ca and Mg. Calcium silicate can be used as an alternative source to limestone for soil acidity correction.

Valorization of cattle manure by thermoconversion process in a rotary kiln reactor to produce environmentally friendly products

Brazil has the world’s second largest cattle herd, which produces 1.9 billion tons of cattle manure per year. This work describes, for the first time, the processing of cattle manure by pyrolysis at 400, 500, and 600 °C in a rotary kiln reactor, as an alternative means of treating this waste to produce second generation biofuels. The biomass was mainly composed of hemicellulose (18.24%), cellulose (14.24%), and lignin (6.09%), with high ash content (18.86%). Pyrolysis of the cattle manure at 500 °C resulted in the best bio-oil yield (5.8% organic phase; 34.4% aqueous phase). The bio-oil consisted mainly of phenolic compounds such as phenol and 3-vinyl-phenol. The results for the biochar were indicative of its potential use in agricultural applications for correcting soil acidity. The biochars produced at higher temperatures presented a high degree of aromaticity, indicating the formation of a more stable material for the purposes of carbon sequestration.

Effects of lime and steel slag application on soil fertility and soybean yield under a no till-system

Steel slags can be used in agriculture, as they are composed of CaO, MgO, SiO2, and compounds such as P2O5, FeO, and MnO. The solubility of slag may be higher than that of lime, which can make this residue an excellent source for soil acidity correction in no-till systems. However, there are few studies reporting their benefits when applied to the soil surface. This study evaluated slag amendment effects on soil chemical attributes and on the yield and nutrient uptake of soybean following surface application and/or incorporation of different types of slag, in comparison to lime, on a tropical, acidic soil under a no-till system. The trial was performed in Botucatu, SP, Brazil. Six soil-acidity corrective materials were incorporated or surface-applied, including steel slag, ladle slag, stainless-steel slag, wollastonite, dolomitic lime, and calcined dolomitic lime, plus a negative control. Each material dose was calculated to raise the base saturation to 70%. Slags can be applied in a no-tillage system with efficiency similar to that of lime for the neutralization of soil acidity, for adequate nutrition and yield of the soybean crop. Slags and limes showed similar effects on increased pH, decreased Al3+concentration, and increased base saturation up to the 0.40 and 0.20-m soil layers at 12 and 23 months, respectively, after the application of treatments, regardless of surface or incorporated application. The by-product application has an additional advantage, depending on the type of slag, that is the provision of phosphorus and/or silicon.

Tuber yield and allocation of nutrients and carbohydrates in potato plants as affected by limestone type and magnesium supply

Magnesium (Mg) is a nutrient that affects the development of plants and is mainly supplied through liming performed to correct soil acidity. By acting on photosynthesis and influencing carbohydrate partitioning in the plant, supplementary Mg supplied through soil or foliar application can increase the yield and quality of potato (Solanum tuberosum L.) tubers. The aim of this study was to evaluate the effect of supplemental Mg fertilization by soil or foliar application on plant nutritional status, tuber yield, and carbohydrate partitioning in potato crops in soil corrected with calcitic and dolomitic limestones. The experiment was carried out in pots under greenhouse conditions with a randomized block design in a 2 × 3 factorial scheme with four replications. Dolomitic limestone application and supplemental Mg fertilization via soil increased the concentrations of this nutrient in potato leaves. Liming with dolomitic limestone reduced the uptake of Ca and K by plants, but supplemental Mg fertilization did not alter the uptake of Ca, Mg or K. Supplemental Mg fertilization did not increase plant growth and tuber yield, even when calcitic limestone was used to elevate the base saturation to 60%; the exchangeable Mg concentration in soil was 9 mmolc dm−3, and the Ca:Mg relationship was 3.7. Liming with dolomitic limestone or providing supplemental Mg fertilization did not increase sugar and starch partitioning to the tubers.

Use of wastes from the pulp and paper industry for the remediation of soils degraded by mining activities: Chemical, biochemical and ecotoxicological effects

Fly ash (FA) from biomass combustion and biological sludge (S), both wastes from the pulp and paper industry, were granulated in different proportions (90% FA+10% S, and 70% FA+30% S w/w, dry weight basis, dw) and used to recover the functionality of soils affected by mining activities (Aljustrel, Iberian Pyrite Belt), with and without the application of municipal solid waste compost (MSWC). Application doses of both mixtures were 2.5, 5.0 and 10% (w/w, dw). These materials corrected soil acidity to circumneutral values and increased extractable P and K concentrations. A significant increase in soil organic matter (from 0.6 to 0.8–1.5% w/w, dw) and N content (from 0.04 to 0.09–0.12% w/w, dw) was also observed, but only when MSWC was applied. The soil was already heavily contaminated with Cu, Pb and Zn and the application of amendments did not increase their pseudo-total concentrations. The CaCl2 extractable fractions of both Cu and Zn decreased to very low values. The improvement in soil quality, compared to fertilizer only treatment, was further evidenced by the increase in some soil enzymatic activities (dehydrogenase, β-glucosidase and cellulase), with a better response for the granules with the higher proportion of biological sludge, as well as by the decrease in the soil-water extract toxicity towards different organisms (Daphnia magna, Thamnocephalus platyurus, and Pseudokirchneriella subcapitata). Agrostis tenuis germinated and grew during the first month only in the amended pots, but, after that, a considerable phytotoxic effect was evident. This was mainly attributed to salt stress or to some specific ionic toxicity. In conclusion, to establish a long-term plant cover in mining soils amended with biomass ash-based materials, the selection of plants with higher resistance to salinity and/or the stabilization of the amendments, to reduce their soluble salt content, is recommended.

Chemical Attributes of Soil and Response of Wheat to Serpentinite in Direct Seeding System

The serpentinite is an alternative for the correction of soil acidity and is composed of calcium and magnesium silicate. The objective of this study was to evaluate the residual effect of the serpentinite application on soil chemical attributes and the effects on wheat crop productivity in a no-tillage system. The experimental design was a randomized block design, in a subdivided plot scheme, with four replications. The plots were constituted by serpentinite doses (0, 2, 4, 8 and 16 Mg ha-1) and in the subplots the soil collection layers (0.0-0.10 and 0.10-0.20 m). The chemical attributes of the soil evaluated at 41 months after the application of serpentinite, presented favorable results of the residual power of this corrective. The main results observed are related to the increase of pH, decrease of aluminum content and potential acidity, and increase of Ca, Mg and Si contents, cation exchange capacity (CTC) and base saturation. The residual of the serpentinite in the soil contributed with an improvement in the chemical attributes of the soil, which favored the increase of the dry mass, number of spikes and yield of the wheat crop.