Resistance Soil To Root Penetration
Mostrando 1-12 de 25 artigos, teses e dissertações.
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1. Chiseling and gypsum application affecting soil physical attributes, root growth and soybean yield
RESUMO O objetivo desse estudo foi avaliar o efeito da escarificação e da gessagem em atributos físicos do solo, crescimento de raízes e produtividade de grãos de soja. O experimento foi conduzido em Londrina, PR, em delineamento de blocos completos casualizados, com seis repetições. O solo da área experimental foi classificado como Latossolo Vermelh
Rev. Ciênc. Agron.. Publicado em: 04/11/2019
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2. Safflower root and shoot growth affected by soil compaction
ABSTRACT Safflower (Carthamus tinctorius L.) is a commercial seed crop grown for its good yield of high-quality oil. It is tolerant to water stress but may be sensitive to soil compaction. The aim of this study was to assess safflower growth under different degrees of soil compaction at depths of 0.15 m to 0.20 m. The experiment was carried out in PVC pots c
Bragantia. Publicado em: 23/04/2018
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3. Is Structural Quality as Assessed by the "Profil Cultural" Method Related to Quantitative Indicators of Soil Physical Quality?
ABSTRACT Soil and crop management systems change the soil structure, thereby affecting soil quality. The “profil cultural” method (PCM) has been used to identify the effects of management systems on soil structure; however, few studies relate the structures identified by the PCM to quantitative indicators of soil structural quality. This study aimed to q
Rev. Bras. Ciênc. Solo. Publicado em: 22/02/2018
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4. Estimating Sample Size of Soil Cone Index Profiles by Bootstrapping
ABSTRACT Measurements of the soil cone index are widely used to assess soil resistance to root penetration (SR) and to monitor the soil compaction status of agricultural fields. However, soil sampling for SR estimation is a rather challenging task in view of the high spatial and temporal variability of the soil. This study proposed a bootstrapping method to
Rev. Bras. Ciênc. Solo. Publicado em: 17/11/2017
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5. Physical Properties and Crop Management for Corn in an Albaqualf
ABSTRACT Rice monoculture in lowlands can cause problems for management practices in crop fields, for example, in weed control. For this reason, corn in rotation with irrigated rice in lowlands may be advantageous, despite problems with soil compaction and water excess. The objective of this study was to evaluate soil physical properties and corn performance
Rev. Bras. Ciênc. Solo. Publicado em: 27/03/2017
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6. Root Distribution of Peach Rootstocks Affected by Soil Compaction and Acidity
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
Rev. Bras. Ciênc. Solo. Publicado em: 25/07/2016
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7. Effects of silicon on the penetration and reproduction events of Meloidogyne exigua on coffee roots
Considering that the root-knot nematode Meloidogyne exigua has caused great yield losses to coffee production in Brazil, this study aimed to determine whether the penetration and the reproduction events of this nematode on the roots of plants from two coffee cultivars with different levels of basal resistance to this nematode could be affected by silicon (Si
Bragantia. Publicado em: 29/04/2015
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8. Soil penetration resistance analysis by multivariate and geostatistical methods
The penetration resistance (PR) is a soil attribute that allows identifies areas with restrictions due to compaction, which results in mechanical impedance for root growth and reduced crop yield. The aim of this study was to characterize the PR of an agricultural soil by geostatistical and multivariate analysis. Sampling was done randomly in 90 points up to
Engenharia Agrícola. Publicado em: 2012-02
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9. Desempenho de bananeiras irrigadas em resposta a diferentes profundidades efetivas do solo na Chapada do Apodi - CE / Performance of banana in response to different irrigation effective soil depth in the Apodi Plateau - CE
The production of banana can be affected whether plants are cropped in sites with physical impedances, as those found in shallow soils. The aim of this research was to verify if irrigated banana plants performance is affected by effective soil depth, and for this purpose were evaluated both soil physical and chemical attributes, as well as plants nutritional
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 03/03/2011
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10. Variabilidade espacial de atritos físicos e químicos em solos de vale aluvial no semiárido de Pernambuco.
The study of soil hydraulic conductivity assumes high importance, being a parameter that measures the easiness which the soil‟s pores transmit water, being a relevant factor for the soil-water-plant system. Associated with this, another important parameter is the physical soil resistance to root penetration, which it has been the subject of extensive s
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 28/02/2011
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11. Spatial variability of some biometric attributes of sugarcane plants (variety IACSP93-3046) and its relation to physical and chemical soil attributes.
Tests to evaluate competition between plants, in general do not consider the soil spatial variability, nevertheless, the uniformity rarely is present and can not be assumed without verification. The aim of this work was to apply geostatistics to verify the spatial variability of the soil in an experimental field near Ribeirão Preto, SP, with sugarcane varie
Bragantia. Publicado em: 2011
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12. Compactação do solo: consequências para o crescimento vegetal.
ABSTRACT: Soil compactation is problem in modern agriculture. Over cultivation, intensive cropping and inappropriate soil management leads to soil compactation. There are important factors which directly affect plant growth, such as water, oxygen, temperature and mechanical resistance to seedling emergence or root growth. By the way, factors indirectly affec
Planaltina. Publicado em: 2011