Albaqualf
Mostrando 1-11 de 11 artigos, teses e dissertações.
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1. Developing a Soil Physical Quality Index (SPQi) for lowlands under different deployment times of no-tillage
ABSTRACT: Soil physical quality in lowlands from the Pampa biome under no-tillage (NT) plays an important role; therefore, this study aimed to establish a soil physical quality index (SPQi) from a minimum data set to detect the effects of different deployment times of NT in an Albaqualf. The comparison of areas with one (NT1), three (NT3), five (NT5) and sev
Sci. agric. (Piracicaba, Braz.). Publicado em: 2019-04
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2. Compressibility and water availability in Albaqualf soils under different deployment times in no-tillage
ABSTRACT: The southern Brazilian lowlands have been historically used for flooded rice cultivation. Over time, heavy machinery and intensive tillage practices have resulted in soil structure disruption, soil compaction, higher production costs and lower agricultural profitability. This study aimed to evaluate the effect of different deployment times of no-ti
Sci. agric. (Piracicaba, Braz.). Publicado em: 2018-09
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3. Visual Evaluation of the Soil Structure under Different Management Systems in Lowlands in Southern Brazil
ABSTRACT The “Visual Evaluation of Soil Structure” (VESS) is a method used primarily to evaluate the soil structural quality of Oxisols in Brazil and secondly for more specific research, consultancy, and teaching purposes. Since the methodology was never applied and compared with laboratory evaluations of physical properties of hydromorphic soils of the
Rev. Bras. Ciênc. Solo. Publicado em: 03/05/2018
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4. 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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5. Soybean Tillage Systems and Physical Changes in Surface Layers of Two Albaqualf Soils
ABSTRACT A compacted subsurface soil layer can be a limiting factor for soybean growing, reducing soybean yield. The aim of this study was to evaluate the effect of different tillage systems on the physical properties of two Albaqualf soils of the Central Plains region in the state of Rio Grande do Sul in southern Brazil. Two experiments were conducted: one
Rev. Bras. Ciênc. Solo. Publicado em: 24/10/2016
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6. Organic matter in Albaqualf as affected by managements irrigated rice cropping systems the South from Brazil / Matéria orgânica em Planossolo Háplico sob sistemas de manejo no cultivo do arroz irrigado no Sul do Brasil
In the south region from Rio Grande do Sul State, in,Brazil, 950 thousand hectares of soils are cultivated with rice, an important agricultural activity in that region, under an irrigation (flooded) system, using different soil management techniques. Studies regarding the organic matter (OM) dynamic in these soils are incipient, so this work aimed to evaluat
Publicado em: 2010
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7. Estimativa da chuva efetiva para o cultivo de arroz irrigado por submersão com lâmina contínua / Estimative of the effective rainfall for rice crop irrigated by continuous submersion water depth
O trabalho consistiu na simulação da chuva efetiva da lavoura de arroz irrigado com lâmina contínua de submersão, através da utilização de planilha eletrônica para computador. O modelo considerou condições especi5cas do cultivo de arroz irrigado, na região sul do Estado do Rio Grande do Sul, em planossolo de textura argilosa (albaqualf). Foram co
Publicado em: 2010
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8. Teor e qualidade de substâncias húmicas de planossolo sob diferentes sistemas de cultivo / Content and quality of humic substances of a Albaqualf under different management systems
Este trabalho teve por objetivo avaliar e comparar os teores e as características químicas das substâncias húmicas (SHs) de um Planossolo háplico submetido a diferentes sistemas de cultivos de arroz. Amostras de solo foram coletadas em um experimento de longa duração (19 anos) nas profundidades de 0-0,025, 0,025-0,05, 0,05-0,20m e no topo do horizonte
Publicado em: 2010
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9. Avaliação da densidade de um Planossolo submetido a diferentes sistemas de cultivo ao longo do tempo através da Tomografia Computadorizada. / Long-term evaluation of the bulk density of an Albaqualf submitted to different cultivation systems with Computerized Tomography.
The agricultural sustainability of the rice (Oryza sativa L.) cultivation in lowland soils is based on the use of different cultivation systems and cultures, needed for a more efficient red and black rice control. The effects of these systems on the soil attributes, mainly in the long run, deserve deeper studies, particularly compaction. The present work had
Publicado em: 2007
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10. Parâmetros químicos da fertilidade de um planossolo submetido a diferentes sistemas de cultivo após dezenove anos. / Fertility Chemical parameters of the one Albaqualf submitted the different cultural systems during for nineteen years.
The inadequate management of cultural tecnics as well as the continuous use of the soil, can alter soil physical, chemical and biological properties. In order to increase crop productivity and to lower production costs without changing the soil physical and chemical properties, a field experiment with alternative cropping systems is being conducted in an Alb
Publicado em: 2006
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11. Resistência mecânica à penetração de um Planossolo submetido a diferentes sistemas de cultivo
O conhecimento das características e propriedades dos solos de várzea do RS, utilizados atualmente com a cultura do arroz irrigado, torna-se essencial para a adoção de práticas que envolvam irrigação, drenagem, correção da acidez e da fertilidade, principalmente quando se deseja obter altos níveis de produtividade, com menor custo e com menores pos
Rev. Bras. Ciênc. Solo. Publicado em: 2001-09