scholarly journals Structuring of a Haplortox by Soil Cover Species

2018 ◽  
Vol 10 (11) ◽  
pp. 299
Author(s):  
Luciene Kazue Tokura ◽  
Deonir Secco ◽  
Luiz Antônio Zanão Júnior ◽  
Jair Antonio Cruz Siqueira ◽  
Samuel Nelson Melegari de Souza ◽  
...  
Keyword(s):  
Hydraulic Conductivity ◽  
Grain Yield ◽  
Bulk Density ◽  
Oil Content ◽  
Soil Cover ◽  
Total Porosity ◽  
Management Systems ◽  
Average Height ◽  
No Tillage ◽  
Tillage System

The objective of this work was to evaluate the effect of soil cover species and management systems in improving the physical characteristics of a Haplortox and its effects on grain yield and soybean oil content. The experimental area, consisted of 15 treatments in a completely randomized experimental design. Each plot had size of 20 × 25 m. The treatments consisted of: traditional no-tillage system (control), no-tillage system with application of gypsum, no-tillage with scarification and 12 treatments with cover species called soil structure reclaimers. Soil samples were collected in the layers of 0-0.10; 0.10-0.20 and 0.20-0.30 m, with four replicates. The physical attributes evaluated were bulk density, total porosity, microporosity, macroporosity and saturated hydraulic conductivity in the periods of 2014, 2015 and 2016. In the soybean crop the grain yield, oil content, weight of 100 grains, average height of plants and number of plants/m were evaluated in each treatment with four replications. The oil content was performed by the low-field nuclear magnetic resonance method. The averages of the treatments were compared by the Tukey test at 5% of significance. The results showed that five months after soil scarification did not affect bulk density. Eleven months after gypsum application discrete improvements in density, total porosity, microporosity and soil hydraulic conductivity occurred in the 0-0.10 and 0.10-0.20 m layers. It was also concluded that grain yield, oil content, weight of 100 grains and number of plants per meter were not influenced by the soil cover species and soil management systems.

scholarly journals Use of cover crops in Oxisol and its effects on yield and soybean oil content

2021 ◽  
Vol 10 (12) ◽  
pp. e353101220514
Author(s):  
Luciene Kazue Tokura ◽  
Deonir Secco ◽  
Luiz Antônio Zanão Júnior ◽  
Jair Antonio Cruz Siqueira ◽  
Alessandra Mayumi Tokura Alovisi ◽  
...  
Keyword(s):  
Soybean Oil ◽  
Grain Yield ◽  
Plant Height ◽  
Seed Weight ◽  
Oil Content ◽  
Soil Cover ◽  
Structural Quality ◽  
No Tillage ◽  
Tillage System ◽  
Thousand Seed Weight

In the no-tillage system, soils generally exhibit some degree of compaction that limits agricultural production. In this scenario, the use of soil cover plants is one of the alternatives capable of improving the structural quality of the soil and increasing the productivity of crops, such as soybeans. In the context, the objective of this study was to evaluate the effect of plant cover species and management systems on the improvement of the physical characteristics of a Oxisol and its effects on the production and content of soybean oil. The treatments consisted of control, no-tillage system with gypsum, chiseling system, and 12 treatments with soil cover species composed of 6 summer species and 6 winter species, in completely randomized design. Soil samples were collected in the 0-0.1; 0.1-0.2 and 0.2-0.3 m layers for determination of bulk density (BD), total porosity (TP), microporosity, macroporosity, and saturated soil hydraulic conductivity (Ksat) in 2014, 2017, 2018. Grain yield, oil content, thousand-seed weight, mean plant height and number of plants per meter were evaluated in soybean crop. Mean treatment values were compared by Tukey’s test at 5% significance. Five months after the chiseling system, there was no influence on BD. The treatments did not present differences six months after the application of gypsum. BD, TP, micro and macroporosity and Ksat were the variables most influenced by the periods of the year in the three soil layers. Grain yield, oil content, thousand-seed weight, plant height and number of plants per meter were influenced by the seasons.

scholarly journals Effects of soil management systems on soil microbial activity, bulk density and chemical properties

2001 ◽  
Vol 36 (12) ◽  
pp. 1539-1545 ◽  
Author(s):  
Maria Alexandra Reis Valpassos ◽  
Eloiza Gomes Silva Cavalcante ◽  
Ana Maria Rodrigues Cassiolato ◽  
Marlene Cristina Alves
Keyword(s):  
Bulk Density ◽  
Chemical Properties ◽  
Soil Management ◽  
Soil Microbial Activity ◽  
Management Systems ◽  
No Tillage ◽  
Soil Microbial ◽  
Tillage System ◽  
Crop Sequence ◽  
And Chemical Properties

The objective of this experiment was to study the effects of soil management systems on the bulk density, chemical soil properties, and on the soil microbial activity on a Latossolo Vermelho distrófico (Oxisol). Soil samples were collected from plots under the following management conditions: a) natural dense "cerrado" vegetation (savanna); b) degraded Brachiaria decumbens pasture, 20 years old; c) no-tillage treatment with annual crop sequence (bean, corn, soybean and dark-oat in continuous rotation), 8 years old; d) conventional tillage treatment with crop residues added to the soil, and annual crop sequence, 10 years old. The continuous use of no-tillage system resulted in an increase in microbial biomass and decrease in soil basal respiration, therefore displaying evident long-term effects on the increase of soil C content. The no-tillage system also provided an improvement in bulk density and chemical properties of the soil. Hence, the no-tillage management system could be an alternative for the conservation and maintenance of physical and chemical conditions and the productive potential of "cerrado" soils.

scholarly journals Long-Term Trial of Tillage Systems for Sugarcane: Effect on Topsoil Hydrophysical Attributes

2021 ◽  
Vol 13 (6) ◽  
pp. 3448
Author(s):  
Aline Fachin Martíni ◽  
Gustavo Pereira Valani ◽  
Laura Fernanda Simões da Silva ◽  
Denizart Bolonhezi ◽  
Simone Di Prima ◽  
...  
Keyword(s):  
Hydraulic Conductivity ◽  
Bulk Density ◽  
Pearson Correlation ◽  
Total Porosity ◽  
Tropical Region ◽  
Native Forest ◽  
No Tillage ◽  
Tillage Systems ◽  
Essential Information

Seeking to provide essential information about sustainable tillage systems, this work aimed to assess the effects of liming and soil cultivation systems on the soil hydrophysical attributes of a long-term cultivated sugarcane field in the tropical region of southeast Brazil. Infiltration tests and soil sampling down to 0.10 m were performed in order to determine saturated soil hydraulic conductivity, soil bulk density, soil total porosity, macroporosity, microporosity, and soil resistance to penetration. The studied areas include no-tillage (NT) and conventional tillage (CT) systems with 0 (CT0 and NT0) and 4 (CT4 and NT4) Mg ha−1 of lime, and an adjoining area with native forest (NF). The data analysis included an analysis of variance followed by the Tukey test to compare different systems, assessment of the Pearson correlation coefficient between variables, and a principal component analysis of the dataset. The lowest bulk density and highest soil total porosity, macroporosity and saturated hydraulic conductivity were found in the NF. The bulk density in CT4 and NT0 was higher than in other systems, indicating the need for amelioration. NT4 is suggested as the most viable system for conservation agriculture in sugarcane fields, combining the benefits of no-tillage and liming to enhance soil hydrophysical functions.

scholarly journals Soil Physical Attributes in Long-Term Soil Management Systems (Tillage and No-till)

2020 ◽  
Vol 12 (4) ◽  
pp. 194
Author(s):  
Venâncio Rodrigues e Silva ◽  
José Luiz Rodrigues Torres ◽  
Danyllo Denner de Almeida Costa ◽  
Bruna de Souza Silveira ◽  
Dinamar Márcia da Silva Vieira ◽  
...  
Keyword(s):  
Soil Management ◽  
Total Porosity ◽  
Conventional Tillage ◽  
Management Systems ◽  
Root Penetration ◽  
Mechanical Resistance ◽  
No Tillage ◽  
Tillage System ◽  
Physical Attributes

The period of implantation of the no-tillage system (NTS) is a fundamental factor to the dimension of the changes that occur to the soil's physical, chemical and biological attributes. Thus, the objective of this study was to evaluate the soil changes to the physical attributes and correlate the results to the soil organic matter in areas of different long-term soil management. The study was set as a completely randomised design, in a 4 × 4 factorial scheme, with four management systems [5 years NTS (NTS5); 17 years NTS (NTS17); conventional tillage system for 20 years (CTS20); native area (NA)], and four soil depths (0-0.05, 0.05-0.1, 0.1-0.2, 0.2-0.4 m), with five repetitions. Soil mechanical resistance to root penetration (RP), bulk density (SD), volumetric moisture (VM), macro (Ma), microporosity (Mi) and total porosity (TP), and the aggregation parameters were evaluated. The CTS20, NTS5 and NTS17 presented superior SD in the most superficial soil layers, which was not yet causing resistance to root development. The SD was the only physical attribute that correlated significantly with all the other soil attributes evaluated, indicating the importance of such attribute to evaluate soil quality to crops. The soil physical attributes found in the Cerrado native area followed the sequence of similarities: no-tillage system with 17 years (most similar), with five years and the conventional tillage system (less similar). The changes caused by the anthropic activity in the soil's physical attributes are more pronounced and perceptible in soil depths up to 0.2 m.

scholarly journals Ferralsol Porosity and Density After Mechanical Scarification and Crop Rotation Systems

2020 ◽  
Vol 12 (10) ◽  
pp. 316
Author(s):  
Monica C. Sustakowski ◽  
Edleusa P. Seidel ◽  
Renata F. Barabasz ◽  
Rayssa H. da Silva ◽  
Willian dos Reis ◽  
...  
Keyword(s):  
Experimental Design ◽  
Physical Properties ◽  
Bulk Density ◽  
Crop Rotation ◽  
Total Porosity ◽  
Soil Porosity ◽  
No Tillage ◽  
Tillage System ◽  
Soil Preparation ◽  
Lower Bulk Density

With intensive cultivation and the lack of crop rotation, the no-tillage system has been showing compacted areas. For its reduction, mechanical scarification and crop rotation has been recommended. Thus, the present study aimed to evaluate in a no-tillage system the effect of mechanical scarification and crop rotation systems on soil porosity and density after 18 months. The experimental design used was randomized blocks in a split-plot scheme, with four replications. The main plots consisted of maintaining the no-tillage system and minimal soil preparation with a chisel, carried out before the cultivation of cover plants. The subplots were composed of different plant species grown in winter: wheat, consortium of forage pea + black oat and consortium of black oat + forage turnip. Both were succeeded by cultivation of soy and lupin. Macroporosity, microporosity, total porosity and bulk density were evaluated. After 18 months, the scarified soil showed a higher bulk density (0.10-0.15 m layer) when compared to the no-tillage system, demonstrating that this isolated decompression alternative does not improve the physical properties of the soil. The area in succession to oat + turnip/soybean/lupin showed lower bulk density.

scholarly journals PROPRIEDADES FÍSICAS DE UM LATOSSOLO VERMELHO CULTIVADO NO SISTEMA PLANTIO DIRETO

Irriga ◽  
2008 ◽  
Vol 13 (2) ◽  
pp. 191-204 ◽  
Author(s):  
Fernanda De Fátima da Silva ◽  
Onã Da Silva Freddi ◽  
José Frederico Centurion ◽  
Ricardo Garcia Aratani ◽  
Fabrícia Flávia Andrioli ◽  
...  
Keyword(s):  
Organic Matter ◽  
Hydraulic Conductivity ◽  
Physical Properties ◽  
Bulk Density ◽  
Soil Aggregates ◽  
Sao Paulo ◽  
Soil Porosity ◽  
No Tillage ◽  
Wooded Area ◽  
Tillage System

PROPRIEDADES FÍSICAS DE UM LATOSSOLO VERMELHO CULTIVADO NO SISTEMA PLANTIO DIRETO  Fernanda de Fátima da Silva; Onã da Silva Freddi; José Frederico Centurion; Ricardo Garcia Aratani; Fabricia Flavia Andrioli; Itamar Andrioli  Departamento de Solos e Adubos, Universidade Estadual Paulista, Faculdade de Ciências Agrárias e Veterináiras, Jaboticabal, São Paulo, [email protected]  1 RESUMO A pressão exercida pelo tráfego de máquinas necessário ao cultivo das culturas pode levar à compactação do solo com o tempo de uso do sistema plantio direto. O objetivo do trabalho foi avaliar o efeito do tempo de adoção do sistema plantio direto em algumas propriedades físicas, índice S, e matéria orgânica (MO) de um Latossolo Vermelho distrófico de textura argilosa localizado em Jaboticabal, SP. O delineamento experimental foi o inteiramente casualizado com parcelas subdivididas (quatro sistemas de uso e três camadas do solo avaliadas). Os quatros sistemas de uso foram: sistema plantio direto por 2 anos (PD2), plantio direto por 4 anos (PD4), plantio direto por 6 anos (PD6) e uma área de mata nativa (MN). As camadas do solo avaliadas foram: 0-0, 10; 0,10-0,20 e 0,20-0,30 m, nas quais foram determinadas a porosidade do solo, o diâmetro médio ponderado, a densidade do solo, índice S, condutividade hidráulica e o teor de matéria orgânica. Os resultados foram submetidos à análise de variância e, quando esta indicou diferença entre médias, utilizou-se o teste de Tukey a 5% de probabilidade para compará-las. A mata nativa apresentou o maior teor de matéria orgânica, macroporosidade, condutividade e Índice S; já entre os sistemas de plantio direto não houve diferença entre os parâmetros analisados no experimento, demonstrando que o tempo de seis anos de adoção do sistema não foi suficiente para alterar a qualidade física do solo.UNITERMOS: densidade do solo, porosidade do solo, índice S, condutividade hidráulica, agregados do solo  SILVA, F. F.; FREDDI, O. S.; CENTURION, J. F.; ARATANI, R. G.; ANDRIOLI, F. F.; ANDRIOLI, I. PHYSICAL PROPERTIES OF AN OXISOL UNDER NO-TILLAGE SYSTEM  2 ABSTRACT             The pressure caused by agricultural machinery traffic many result in soil compactation in no-tillage system. The aim of this work was to evaluate no-tillage system onset time on some physical properties, index S and organic matter (OM) of an oxysol located in Jaboticabal,Sao Paulo State,Brazil. The experiment had completely randomized split-splot design .The treatments consisted of four no-tillage systems: no-tillage for 2 years, no-tillage for 4 years, no-tillage for 6 years and one natural wooded area. The evaluated layers were: 0-0.10m, 0.10-0.20m and 0.20-030m. The following were determined: soil porosity, soil aggregates, bulk density, index S and organic matter. The results were submitted to variance analysis and when there was a difference between averages, Tukey’s test was used to compare them. The natural wooded area showed higher organic matter, macroporosity, hydraulic conductivity and Index S. There was no difference between the studied parameters showing that the no-tillage system for six years was not enough to change the soil physical property. KEY WORDS: bulk density, soil porosity, index S, hydraulic conductivity, soil aggregates.

scholarly journals Phytomass and nutrient release in soybean cultivation systems under no-tillage

2018 ◽  
Vol 53 (10) ◽  
pp. 1119-1131 ◽  
Author(s):  
Andressa Selestina Dalla Côrt São Miguel ◽  
Leandro Pereira Pacheco ◽  
Ícaro Camargo de Carvalho ◽  
Edicarlos Damacena de Souza ◽  
Priscilla Barros Feitosa ◽  
...  
Keyword(s):  
Nutrient Cycling ◽  
Grain Yield ◽  
Cover Crops ◽  
Soil Cover ◽  
Block Design ◽  
Nutrient Release ◽  
No Tillage ◽  
Mato Grosso ◽  
Cultivation Systems ◽  
Tillage System

Abstract: The objective of this work was to evaluate the effect of phytomass accumulation, soil cover, and nutrient cycling promoted by cultivation systems with annual and cover crops on the grain yield of soybean sown in succession in the Cerrado, in the state of Mato Grosso, Brazil. The experiment was carried out in a randomized complete block design with nine cultivation systems and four replicates, in two crop seasons. In 2014/2015, forage grasses and legumes were evaluated, besides fallow treatments. In 2015/2016, forage and legume intercropped or not with corn or sunflower and fallow were assessed; the soybean crop was evaluated following cover crops. Phytomass, soil cover, and nutrient cycling provided by cultivation systems, as well as soybean mass and yield, were determined. Urochloa ruziziensis alone or intercropped, compared with the fallow systems, promotes significant increases in phytomass production, soil cover and nutrient cycling, with an increase in the grain yield of soybean planted in succession. N and K are the most accumulated nutrients in the aerial part of the cover crops and are released in larger quantities in the soil in the two years of evaluation. Crotalaria spectabilis promotes an increase in soybean yield in the 2015/2016 crop season, compared with U. ruziziensis, due to the synchronism between N release and uptake under no-tillage system.

scholarly journals INFLUÊNCIA DA COMPACTAÇÃO E DO CULTIVO DE SOJA NOS ATRIBUTOS FÍSICOS E NA CONDUTIVIDADE HIDRÁULICA EM LATOSSOLO VERMELHO

Irriga ◽  
2003 ◽  
Vol 8 (3) ◽  
pp. 242-249 ◽  
Author(s):  
Amauri Nelson Beutler ◽  
José Frederico Centurion ◽  
Cassiano Garcia Roque ◽  
Zigomar Menezes de Souza
Keyword(s):  
Hydraulic Conductivity ◽  
Bulk Density ◽  
Soil Compaction ◽  
Soil Surface ◽  
Total Porosity ◽  
Soil Condition ◽  
Agricultural Science ◽  
Water Infiltration ◽  
Loose Soil ◽  
Physical Attributes

INFLUÊNCIA DA COMPACTAÇÃO E DO CULTIVO DE SOJA NOS ATRIBUTOS FÍSICOS E NA CONDUTIVIDADE HIDRÁULICA EM LATOSSOLO VERMELHO   Amauri Nelson BeutlerJosé Frederico CenturionCassiano Garcia RoqueZigomar Menezes de SouzaDepartamento de Solos e Adubos, Faculdade de Ciências Agrárias e Veterinárias, Universidade Estadual Paulista, Jaboticabal, SP. CEP 14870-000. E-mail: [email protected], [email protected]  1 RESUMO              Este estudo teve como objetivo determinar a influência da compactação e do cultivo de soja nos atributos físicos e na condutividade hidráulica de um Latossolo Vermelho de textura média. O experimento foi conduzido na Universidade Estadual Paulista – Faculdade de Ciências Agrárias e Veterinárias, Jaboticabal (SP). Os tratamentos foram: 0, 1, 2, 4 e 6 passadas de um trator, uma ao lado da outra perfazendo toda a superfície do solo, com quatro repetições. O delineamento experimental foi inteiramente casualizado para a condutividade hidráulica e, em esquema fatorial 5 x 2 para os atributos físicos. Foram coletadas amostras de solo nas faixas de profundidades de 0,02-0,05; 0,07-0,10 e 0,15-0,18 m, por ocasião da semeadura e após a colheita para determinação da densidade do solo, porosidade total, macro e microporosidade do solo. A condutividade hidráulica do solo foi determinada após a colheita. O tempo entre a semeadura e a colheita de soja foi suficiente para aumentar a compactação do solo apenas na condição de solo solto. A compactação do solo reduziu a condutividade hidráulica em relação a condição natural (mata) e a condição de solo solto, sendo que esta não foi reduzida, após a primeira passagem, com o aumento no número de passagens.  UNITERMOS: Densidade do solo, porosidade do solo, infiltração de água, soja.  BEUTLER, A. N.; CENTURION, J. F.; ROQUE, C. G.; SOUZA, Z. M. COMPACTION AND SOYBEAN GROW INFLUENCE ON PHYSICAL ATTRIBUTES AND  HYDRAULIC CONDUCTIVITY IN RED LATOSSOL SOIL   2 ABSTRACT  The purpose of this study was to determine the influence of compaction and soybean grow on physical attributes and hydraulic conductivity of a Red Latossol, medium texture soil. The experiment was carried out in the experimental farm at the Paulista State University  – Agricultural Science College, Jaboticabal – São Paulo state. The treatments were 0, 1, 2, 4 and 6 side-by-side tractor strides on the soil surface with four replications. The experimental design was completely randomized for hydraulic conductivity and a 5 x 2 factorial design for soil physical attributes. Soil samples have been collected at 0.02-0.05, 0.07-0.10 and 0.15-0.18 m depth at sowing season and after harvest in order to determine soil bulk density, total porosity, macro and micro porosity. Soil hydraulic conductivity was determined after harvest. The time period between the soybean sowing and harvesting was enough to increase soil compaction only in loose soil condition. Soil compaction reduced hydraulic conductivity compared to the natural (forest) and loose soil condition  KEYWORDS: Bulk density, soil porosity, water infiltration, soybean.

scholarly journals Modification of sandy soil hydrophysical environment through bagasse additive under laboratory experiment

2015 ◽  
Vol 29 (1) ◽  
pp. 101-106 ◽  
Author(s):  
A.A. Abd El-Halim ◽  
Arunsiri Kumlung
Keyword(s):  
Hydraulic Conductivity ◽  
Laboratory Experiment ◽  
Bulk Density ◽  
Sandy Soil ◽  
Sandy Soils ◽  
Total Porosity ◽  
Dry Weight ◽  
Weight Basis ◽  
Control Treatment ◽  
Study Results

Abstract Until now sandy soils can be considered as one roup having common hydrophysical problems. Therefore, a laboratory experiment was conducted to evaluate the influence of bagasse as an amendment to improve hydrophysical properties of sandy soil, through the determination of bulk density, aggregatesize distribution, total porosity, hydraulic conductivity, pore-space structure and water retention. To fulfil this objective, sandy soils were amended with bagasse at the rate of 0, 0.5, 1, 2, 3 and 4% on the dry weight basis. The study results demonstrated that the addition of bagasse to sandy soils in between 3 to 4% on the dry weight basis led to a significant decrease in bulk density, hydraulic conductivity, and rapid-drainable pores, and increase in the total porosity, water-holding pores, fine capillary pores, water retained at field capacity, wilting point, and soil available water as compared with the control treatment

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