Consulta: subjectFacets:"Resistance to penetration"
Registros recuperados: 7
Data/hora: 11/06/2024 04:10:15

FORRAGEIRAS TROPICAIS EM CONSÓRCIO COM MILHO E ADUBAÇÃO NITROGENADA SOBRE AS PROPRIEDADES FÍSICAS DO SOLO
Provedor de dados: 196
Autores: Mattei, Eloisa; Rabello de Oliveira, Paulo Sérgio; Costa Crusciol, Carlos Alexandre; Rocha de Moraes Rego, Carlos Augusto; Piano, Jeferson Tiago; da Silveira, Lucas.
Os sistemas integrados de produção lavoura-pecuária (SIPAs) em associação ao sistema de semeadura direta, sofrem ação do pisoteio animal ou do tráfego intenso de máquinas agrícolas, podendo resultar em alterações nas propriedades físicas do solo. O objetivo deste trabalho foi avaliar o efeito da adubação nitrogenada e manejos das forrageiras tropicais nas propriedades físicas do solo. O experimento foi realizado entre outubro de 2017 e janeiro de 2020, em Marechal Cândido Rondon – PR, em blocos ao acaso, com parcelas sub-subdivididas com uma testemunha adicional e quatro repetições. As parcelas foram constituídas por duas espécies forrageiras consorciadas com o milho: Urochloa brizantha e Magathyrsus maximum, mais a testemunha adicional (milho solteiro)....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Porosity; Soil physical quality; Resistance to penetration; Integrated systems; Porosidade; Qualidade física do solo; Resistência à penetração; Sistemas integrados.
Ano: 2021
URL: http://periodicosonline.uems.br/index.php/agrineo/article/view/6318

MANAGEMENT SYSTEMS: SOIL COVER AND COMPACTION, LONGITUDINAL DISTRIBUTION, AND YIELD OF SOYBEAN CROP
Provedor de dados: 70
Autores: Cortez,Jorge W.; Pusch,Maiara; Silva,Rouverson P. da; Rufino,Mauricio V.; Anghinoni,Matheus.
ABSTRACT The way the soil is managed can influence its structuring and, consequently, crop yield. Thus, this study aimed to evaluate the effect caused by the management systems plowing followed by two intermediate harrowing operations, intermediate harrowing, chiseling, chiseling followed by intermediate harrowing, cross chiseling followed by intermediate harrowing, and non-tillage on soil and agronomic attributes of the soybean crop. A randomized block design with four replications was used. The percentage of soil cover, soil resistance to penetration, number of plants per meter, longitudinal distribution of seedlings, and soybean yield were evaluated. The data were submitted to analysis of variance by the Tukey test at 5% probability, and use of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Resistance to penetration; Geostatistics; Soil tillage.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162019000400490

ASPECTS OF THE SILVOPASTORAL SYSTEM CORRELATED WITH PROPERTIES OF A TYPIC QUARTZIPSAMMENT (ENTISOL) IN MATO GROSSO DO SUL, BRAZIL
Provedor de dados: 90
Autores: Corrêa,Adriany Rodrigues; Montanari,Rafael; Laura,Valdemir Antônio; Melotto,Alex Marcel; Silva,Evelize Nayara Santana da; Pellin,Douglas Martins Pereira; Santos,Anderson Secco dos.
In Brazil, grazing mismanagement may lead to soil and pasture degradation. To impede this process, integrated cropping systems such as silvopasture have been an effective alternative, allied with precision agriculture based on soil mapping for site-specific management. In this study, we aimed to define the soil property that best sheds light on the variability of eucalyptus and forage yield. The experiment was conducted in the 2011/12 crop year in Ribas do Rio Pardo, Mato Grosso do Sul State, Brazil. We analyzed linear and spatial correlations between eucalyptus traits and physical properties of a Typic Quartzipsamment at two depths (0.00-0.10 and 0.10-0.20 m). For that purpose, we set up a geostatistical grid for collection at 72 points. Gravimetric...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Geostatistics; Resistance to penetration; Soil management; Agricultural sustainability.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832015000200438

Root Distribution of Peach Rootstocks Affected by Soil Compaction and Acidity
Provedor de dados: 90
Autores: Petry,Henrique Belmonte; Mazurana,Michael; Marodin,Gilmar Arduíno Bettio; Levien,Renato; Anghinoni,Ibanor; Gianello,Clésio; Schwarz,Sergio Francisco.
ABSTRACT Root growth can be limited by physical and chemical conditions of the soil. Compacted and acidic soils, where there is an occurrence of exchangeable Al, constitute barriers to use of the soil by plant roots. The hypothesis of this study was that physical and chemical properties of the inter-row soil of a peach orchard influence the root distribution of different rootstocks. The aim of this study was to describe and register the soil physical and chemical properties and root distribution in the soil profile of the inter-row of seven years old mature peach (Prunus persica) orchard. Samples of soil (classified as an Argissolo Vermelho Distrófico típico [Rhodic Paleudult] with 180 g kg-1 clay, 120 g kg-1 silt, and 700 g kg-1 sand) and roots were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Prunus persica; Resistance to penetration; Exchangeable aluminum; Root density.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832016000100412

Least limiting water range and physical quality of soil under groundcover management systems in citrus
Provedor de dados: 63
Autores: Fidalski,Jonez; Tormena,Cássio Antonio; Silva,Álvaro Pires da.
Machinery-based farming operations used for perennial fruit crops often damage soils, particularly if the soil is wet and prone to compaction. We hypothesized that perennial vegetation growing in the interrows of orange orchards can mitigate the soil physical degradation from machinery traffic. The objective of this study was to investigate the effects of different groundcover management systems on the soil physical quality indicators including the least limiting water range (LLWR). An experiment was started in 1993 in a Typic Paleudult to evaluate three groundcover management systems: Bahia grass (Paspalum notatum) with mowing, perennial peanut (Arachis pintoi), and natural regrowth in which weeds were controlled by herbicide. The experimental design was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Organic carbon; Soil compaction; Bulk density; Resistance to penetration; Available water.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162010000400012

Compactação causada pelo tráfego de trator em diferentes manejos de solo - DOI: 10.4025/actasciagron.v31i3.819
Provedor de dados: 1
Autores: Cunha, João Paulo Arantes Rodrigues da; UFU; Cascão, Vinicius Nery; UFU; Reis, Elton Fialho dos; UEG.
O objetivo deste trabalho foi avaliar a compactação do solo causada pelo tráfego de trator, em um Latossolo Vermelho distroférrico submetido a diferentes tipos de preparo. O delineamento experimental utilizado foi o de blocos casualizados, com arranjo de parcelas subdivididas, considerando os tipos de preparo de solo como tratamentos principais e o número de passadas do trator como tratamentos secundários. Como tratamentos de preparo de solo, além de uma testemunha sem movimentação, foram avaliados: aração com 18 cm de profundidade, aração com 18 cm de profundidade, seguida de gradagem a 10 cm e subsolagem a 40 cm de profundidade. Após o preparo, foi avaliada a resistência do solo à penetração, por meio de um penetrômetro eletrônico, antes da passagem do...
Palavras-chave: 5.01.00.00-9    Agronomia física do solo; Preparo do solo; Resistência à penetração 5.01.03.02-4 (Mecanização Agrícola) soil physical characteristics; Soil tillage system; Resistance to penetration.
Ano: 2009
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/819

Soil resistance to penetration and least limiting water range for soybean yield in a haplustox from Brazil
Provedor de dados: 52
Autores: Beutler,Amauri Nelson; Centurion,José Frederico; Silva,Alvaro Pires da.
The objective of this study was determine the resistance to penetration (PR), least limiting water range (LLWR) and critical bulk density (Db-crit) for soybean yield in a medium-textured oxisol (Haplustox). The treatments represented the soil compaction by passing a tractor over the site 0, 1, 2, 4, and 6 times, with 4 replications in a randomized experimental design. Samples were collected from 0.02-0.05, 0.07-0.10 and 0.15-0.18 m depths. Soybean (Glycine max cv. Embrapa 48) was sowed in December 2002. Plant height, number of pods, aerial dry matter, weight of 100 seeds, and the yield in 3.6 m² plots were recorded. Soybean yield started reduction at the PR of 0.85 MPa and Db of 1.48 Mg m-3. The LLWR was limited in highest part by water content at field...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Glycine max; Water content; Resistance to penetration; Bulk density.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132005000800002