Soil physical quality of Luvisols under agroforestry, natural vegetation and conventional crop management systems in the Brazilian semi-arid region

Geoderma ◽  
2011 ◽  
Vol 167-168 ◽  
pp. 61-70 ◽  
Author(s):  
G.L. Silva ◽  
H.V. Lima ◽  
M.M. Campanha ◽  
R.J. Gilkes ◽  
T.S. Oliveira
Keyword(s):  
Arid Region ◽  
Crop Management ◽  
Natural Vegetation ◽  
Management Systems ◽  
Physical Quality ◽  
Soil Physical Quality ◽  
Semi Arid Region ◽  
Crop Management Systems ◽  
Semi Arid

scholarly journals Physical quality of a Latosol under no-tillage and conventional tillage in the semi-arid region

2016 ◽  
Vol 47 (3) ◽  
pp. 429-438 ◽  
Author(s):  
Rafael Pereira Sales ◽  
Arley Figueiredo Portugal ◽  
José Aloísio Alves Moreira ◽  
Marcos Koiti Kondo ◽  
Rodinei Facco Pegoraro
Keyword(s):  
Arid Region ◽  
Conventional Tillage ◽  
No Tillage ◽  
Physical Quality ◽  
Semi Arid Region ◽  
Semi Arid

Impacts of inter-basin water transfer on the water quality of receiving reservoirs in a tropical semi-arid region

Hydrobiologia ◽  
2021 ◽  
Author(s):  
José Etham de Lucena Barbosa ◽  
Juliana dos Santos Severiano ◽  
Hérika Cavalcante ◽  
Daniely de Lucena-Silva ◽  
Camila Ferreira Mendes ◽  
...  
Keyword(s):  
Water Quality ◽  
Arid Region ◽  
Water Transfer ◽  
Basin Water ◽  
Semi Arid Region ◽  
Semi Arid

scholarly journals Quality of Life of Post-Mastectomy Women Living in a Semi-Arid Region of Brazil

2017 ◽  
Vol 14 (6) ◽  
pp. 601 ◽  
Author(s):  
Emídio Araújo Neto ◽  
Beatriz Alves ◽  
Flávia Gehrke ◽  
Ligia Azzalis ◽  
Virginia Junqueira ◽  
...  
Keyword(s):  
Quality Of Life ◽  
Arid Region ◽  
Semi Arid Region ◽  
Semi Arid

scholarly journals Organic fertilizers as mitigating effects of water salinity on Passiflora cincinnata seedlings

2018 ◽  
Vol 67 (4) ◽  
pp. 501-511
Author(s):  
José Sebastião de Melo Filho ◽  
Mário Leno Martins Véras ◽  
Toshik Larley Da Silva ◽  
Lunara De Sousa Alves ◽  
Thiago Jardelino Dias
Keyword(s):  
Irrigation Water ◽  
Arid Region ◽  
Climatic Conditions ◽  
Organic Fertilizers ◽  
State University ◽  
Electrical Conductivities ◽  
Randomized Experimental Design ◽  
Semi Arid Region ◽  
Semi Arid

Maracujá-do-mato (Passiflora cincinnata) is a species adapted to the climatic conditions of the Brazilian semi-arid region and widely used as rootstock, however, studies related to the production of seedlings and their resistance to abiotic stresses are scarce in literature. The objective was to study the production of maracujá-do-mato seedlings under the effect of the electrical conductivity on the irrigation water as a function of the application of organic fertilizers. The experiment was developed at the State University of Paraíba, Catolé do Rocha-PB, in a completely randomized experimental design, in a 5 x 3 factorial scheme, with 6 replicates. The factors evaluated were five electrical conductivities of irrigation water (ECw: 1; 2; 3; 4 and 5 dS m-1) and application of three organic fertilizers (bovine urine, bovine biofertilizer and liquid earthworm humus). It was verified that the increase of ECw affected the morphology and the quality of the seedlings negatively, while the bovine biofertilizer presented better efficiency in comparison to the others. It is inferred that the use of organic fertilizers as mitigating effects of salinity may be a strategy for production of maracujá-do-mato seedlings in saline conditions.

scholarly journals Physiological quality of sweet sorghum [Sorghum bicolor (L.) Moench.] seeds in response to planting density in semi-arid region

2017 ◽  
Vol 11 (06) ◽  
pp. 694-700 ◽  
Author(s):  
Tatiana Maria da Silva ◽  
◽  
Maria de Fátima de Queiroz Lopes ◽  
Alexandre Bosco de Oliveira ◽  
André Luis da Silva Parente Nogueira ◽  
...  
Keyword(s):  
Sorghum Bicolor ◽  
Arid Region ◽  
Sweet Sorghum ◽  
Planting Density ◽  
Physiological Quality ◽  
Semi Arid Region ◽  
Sorghum Bicolor L ◽  
Semi Arid

Evaluation of soil physical quality of irrigated agroecosystems in a semi-arid region of North-eastern Brazil

Soil Research ◽  
2012 ◽  
Vol 50 (6) ◽  
pp. 455 ◽  
Author(s):  
V. P. Pereira ◽  
M. E. Ortiz-Escobar ◽  
G. C. Rocha ◽  
R. N. Assis Junior ◽  
T. S. Oliveira
Keyword(s):  
Bulk Density ◽  
Soil Bulk Density ◽  
Natural Vegetation ◽  
Water Retention Curve ◽  
Retention Curve ◽  
Physical Quality ◽  
Soil Physical Quality ◽  
Eastern Brazil ◽  
North Eastern

Concern about soil physical quality has grown in recent years, particularly in view of serious problems caused by intensive soil use. We hypothesised that improper soil management in irrigated areas damages the structure of sensitive soils in some regions in North-eastern Brazil. The aim of the study was to evaluate the physical quality of irrigated soils planted with annual and perennial crops, compared with soils under natural vegetation in Ceará State, Brazil. Measurements were made of least limiting water range (LLWR), the S index, and relative density. Undisturbed soil samples were collected at two depths (5–10 and 20–25 cm) in four cultivated areas (banana, guava, pasture, and maize/bean in succession) and two natural vegetation areas (NV1, NV2) adjacent to the cultivated areas. All sites were in the Jaguaribe-Apodi Irrigated District, Limoeiro do Norte, Ceará, Brazil. The LLWR was determined using the water retention curve, soil resistance to penetration, and soil bulk density, which are parameters needed to obtain the upper and lower limits of LLWR. The S index was obtained from the water retention curve. The relative density was obtained from the relationship between bulk density and maximum density obtained from the Proctor test. The S index varied as a function of soil management. The variation in LLWR differed between the studied areas as a function of soil bulk density. The relative densities for NV1 and NV2 were lower than for cultivated areas, showing that intensive soil use has caused compaction. The studied parameters seem to be good indicators of soil physical quality, and it was noticed that soils under cultivation suffer an alteration of their structure relative to soils under natural vegetation.

scholarly journals Physicochemical Quality of Certified and Uncertified Honeys from the Brazilian Semi-Arid Region

2021 ◽  
Vol 24 (5-esp.) ◽  
pp. 489-495
Author(s):  
Wedson de Lima Tôrres ◽  
João Claudio Vilvert ◽  
Airton Torres de Carvalho ◽  
Ricardo Henrique de Lima Leite ◽  
Camila Maia da Silva ◽  
...  
Keyword(s):  
Arid Region ◽  
Reducing Sugars ◽  
Quality Standards ◽  
Prolonged Storage ◽  
Free Acidity ◽  
Negative Effects ◽  
Physicochemical Quality ◽  
Semi Arid Region ◽  
Semi Arid

O Brasil se destaca como um dos principais produtores mundiais de mel. A legislação brasileira estabelece parâmetros de qualidade e análises físico-químicas para avaliar e controlar a qualidade do mel comercializado. Essas análises também são importantes para detectar adulterações que podem causar diversos efeitos negativos aos consumidores. O objetivo deste estudo foi avaliar e comparar a qualidade físico-química de amostras de mel certificadas e não-certificadas produzidas em diferentes cidades da região semiárida brasileira. Vinte e quatro amostras de mel da região semiárida do Brasil foram coletadas e analisadas: quatro de mel certificadas com garantia de genuinidade e origem conhecida e vinte de mel não-certificadas. As seguintes análises foram realizadas em duplicata: umidade, atividade da água, açúcares redutores, sacarose, matéria insolúvel, cinzas, acidez livre, pH e hidroximetilfurfural (HMF). O conteúdo de sacarose foi mais alto nas amostras não-certificadas (p≤0.05), enquanto que as amostras certificadas apresentaram maior acidez livre (p≤0.05). Todas as amostras de mel atenderam aos padrões de umidade, açúcares redutores e cinzas. Sacarose e HMF estavam dentro dos padrões apenas nas amostras certificadas. Algumas amostras de mel de ambos os grupos não atenderam aos padrões de matéria insolúvel e acidez livre. É possível produzir mel em escala comercial nas regiões rurais do semiárido brasileiro, desde que alguns cuidados sejam tomados, especialmente em relação ao tempo prolongado de armazenamento, para que as amostras atendam aos padrões de qualidade.   Palavras-chave: Apis melífera. Brasil. Certificação. Mel. Clima Semiárido   Abstract Brazil stands out as one the world’s largest producers of honey. The Brazilian legislation establish quality standards and physicochemical analyses to evaluate and control the quality of honey sold. These analyses are also important to detect adulterations that can cause several negative effects to consumers. The aim of this study was to evaluate and compare physicochemical quality of certified and uncertified honey samples produced in different cities of the Brazilian semi-arid region. Twenty-four honey samples from semi-arid region of Brazil were collected and analysed: four from certified honey with a guarantee of genuineness and known history and twenty from uncertified honey. The following analysis were performed in duplicate: moisture, water activity, reducing sugars, sucrose, insoluble matter, ash, free acidity, pH and hydroxymethylfurfural (HMF). Sucrose content was higher on uncertified samples (p≤0.05), while certified samples had higher free acidity (p≤0.05). All honey samples fit the standards for moisture, reducing sugars and ash. Sucrose and HMF were within the standards only in certified samples. Some honey samples of both groups do not fit the standards for insoluble matter and free acidity. It is possible to produce honey on a commercial scale in rural regions of the Brazilian semi-arid, provided that some precautions are taken, especially in relation to the prolonged storage time, so that the samples meet the quality standards.   Keywords: Apis mellifera. Brazil. Certification. Honey. Semi-Arid Climate

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