Com o objetivo de avaliar uso três tipos esterco animal: frango, bovino e ovino na produção alface, um experimento campo foi conduzido em Latossolo Vermelho-Amarelo Eutrófico, no Instituto Federal Educação Ciência Tecnologia campus Crato, CE. O delineamento experimental blocos casualizados, com arranjo fatorial [(3x5) + 2], ou seja, estercos cinco doses, dois tratamentos adicionais, só fertilizante mineral controle (sem fertilização), quatro repetições. Foram avaliadas as variáveis: matéria...

Soil salinization and sodification, caused by inadequate land management, is one of the main threats to semiarid agroecosystems. It essential investigate saline levels under different land-use conditions maintain sustainability agricultural production. The objective this study was diagnose salinity status soil in region Northeast Brazil. samples were collected surface layer (0–5 cm) three conditions: areas low (native vegetation – Caatinga), (cultivated areas), very high (desertified...

This study aimed to evaluate the use of phytoremediation and soil conditioners in recovery physical attributes a saline-sodic Fluvic Neossol Brazil Northeast. The applied treatments were: Atriplex nummularia L., as plant, due its ability extract salts from soil; organic conditioners, such bovine sheep manure; gypsum polymer, chemical conditioners. Samples with preserved structure were collected at time experiment installation 18 months after layers 0–10 cm 10–30 cm. analyzed water dispersed...

ABSTRACT The lack of water in semi‐arid areas presents challenges for agriculture, making it necessary to adopt strategies that optimise the use this resource. This study evaluated effects irrigation level on growth, productivity, economic viability and indicators different forage species region Brazil. was carried out two production cycles, with a bifactorial arrangement pasture grasses (Buffel, Aruana BRS Kurumi) silage (Sorghum Capiaçu) unifactorial protein source (Pornunça). Irrigation...

Water quality affects soils by promoting their degradation the accumulation of salts that will lead to salinization and sodification. However, magnitude these processes varies with soil attributes. Saturated hydraulic conductivity (Ksat) is rate at which water passes through saturated soil, fundamental determining movement profile. The Ksat may differ from according sodium adsorption ratio (SAR), electrical (ECw), texture, clay mineralogical assemblage. In this study, an experiment vertical...

In the Brazilian semiarid region, one of great challenges agriculture is adoption cultivation strategies for saline soils utilizing waters.This work aims to evaluate development sweet sorghum and soil salinity status under increasing doses elemental sulfur applications associated with gypsum at different irrigation levels.The was conducted in a Cambisol, 4 x 5 factorial scheme, corresponding levels (0, 0.69, 1.39 1.99 t ha -1) (6, 12, 18, 24 30 mm), equivalent 20, 40, 60, 80 100% field...

Solos desenvolvidos em ambiente de clima semi-árido podem apresentar, naturalmente, acúmulo sais que comprometem seu uso agrícola, o pode ser incrementado pelo manejo inadequado da irrigação. Dependendo do uso, a degradação destes solos ocorrer com maior ou menor intensidade. Este trabalho teve como objetivo avaliar usos solo utilizando atributos químicos um perímetro irrigado na região semiárida Nordeste Brasil. Os foram separados áreas culturas ciclo curto (C), fruticultura (F), pastagem...

The reclamation of salt-affected soils is considered a slow process that urges the development faster recovery strategies as priority. present article aimed at investigating effect mixing different chemical and organic conditioners on growth Atriplex its salt extraction efficiency during early stage. A pot experiment was conducted saline-sodic Cambisol cultivated with for 60 days subjected to following conditioner mixtures: Atriplex; + gypsum matter; elemental sulfur matter. mixtures did not...

Soil respiration represents the largest flux of CO2 emission from terrestrial ecosystems, being affected by land-use changes and soil properties. There are few studies investigating response to in Caatinga biome. This study aimed measure vegetation degraded pasture, verify effect on respiration. Measurements were performed using infrared gas analyzer method over nine months (in rainy dry [...]

The properties of halomorphic soils are controlled by the presence either soluble salts, exchangeable sodium or both, and it is important to know understand these in order reforest and/or recover soils. objective this study was characterize classify from semiarid region Northeast Brazil. Four profiles were studied, which described morphologically samples collected all soil horizons. Physical chemical analyzes carried out for classification purposes, as well geochemical speciation salts....

Abstract Semiarid regions’ soils have been degraded by salinization. The use of chemical conditioners makes this management very expensive. As an alternative, organic can be used with plants adapted to the salts and phytoremediation, such as Atriplex nummularia Lindl. This study aimed evaluate phytoremediation in recovery attributes a saline‐sodic soil Brazil Northeast. A was carried out testing A. application (gypsum anionic polymer) (bovine sheep manure), control treatment. experiment...

The conversion of caatinga vegetation areas into pastures in the Brazilian semiarid region has depleted soil fertility due to degradation. natural regeneration been alternative adopted restore fertility. However, real effectiveness this practice recovering organic carbon (SOC) and nutrient stocks is unknown. This work evaluated effect on restoration levels SOC, N, P as a strategy maintain sustainability environment. We collected samples every 5 cm, up 20 cm deep, degraded pasture, (10...

RESUMO Solos em perímetros irrigados sob clima semiárido são propensos ao acúmulo de sais e, no Brasil, este problema tem sido expressivo do Nordeste, entanto, poucos dados existem da real situação desta degradação. O objetivo deste trabalho foi avaliar a salinidade e sodicidade Perímetro Irrigado Custódia diferentes épocas determinar grupos solos por meio variáveis associadas à sodicidade. Foram feitas amostragens nos 55 lotes nas camadas 0-10, 10-30 30-60 cm quatro épocas, duas final...

Solos sob clima semiárido têm sido degradados pela salinização, reduzindo a capacidade produtiva. Objetivou-se com este trabalho, avaliar atributos físicos dos solos de um perímetro irrigado no do Nordeste Brasil e comparar diferentes usos utilizando-se esses atributos. O trabalho foi desenvolvido Icó-Mandantes, entre Petrolândia Floresta, sertão Pernambuco, qual as populações foram estratificadas acordo os em áreas culturas ciclo curto (C), fruticultura (F), pastagem (P), descartadas (D)...

The use of saline water for crop irrigation is a commonly adopted practice among the farmers in semiarid regions around world, but magnitude soil salinization resulting from these waters currently insufficiently understood. This work aims to evaluate chemical attribute changes two Fluvisols cultivated with onion and subjected increasing levels salinity, expressed by electrical conductivity (EC) sodium adsorption ratio (SAR). Sandy loam silty clay soils were irrigated three different (EC -...

Salinization of soils has led to the loss cropland and represents a major threat food production. Hyperspectral imaging may prove be useful for characterizing spectral behavior salt-affected but methodology needs better evaluated. In this study, we characterized behaviors four types chloride salt crusts [calcium dehydrate, magnesium potassium chloride, sodium (CaCl2·2H2O, KCl, NaCl)] formed in laboratory. We found that (1) as concentration increased, reflectance intensity decreased both soil...

This study analyzes the meaning of high-risk pregnancy in articles published by a representative Brazilian journal field Obstetrics 1990s. The methodological approach includes quantitative and qualitative analysis 40 articles, which reveals diversity meanings attributed to reduced discussion on theme. conclusion shows need include an interdisciplinary theme taking into account complexity aspects involving women's participation care.

Riparian zones of dry tropical forests are important due to their effect on nutrient cycling and carbon dynamics. It’s evaluate the changes that occur when these areas altered, in order ascertain magnitude gains or losses. This work evaluates chemical soil litter transitioning from a riparian non-riparian zone. Plots were established for sampling zones. For analysis, surface performed at depths 0.0 0.10 m 0.20 m. The descriptive principal component analysis assessed attribute sets'...

Aiming to evaluate leachate chemical composition and salinity from two Fluvic Entisols of Pernambuco-Brazil, cultivated with onions irrigated saline water, an experiment was carried out in random blocks, a factorial arrange 2 x 3 6 (two soil types – silty clay loam sandy –, three levels electrical conductivity - 200, 700 2.000 ìS cm-1 six sodium adsorption ratio 0, 5, 10, 15, 20 25 (mmolc L-1)1/2), four repetitions. After 30, 60 e 90 days the transplanting leached pots collected for...

This study aims to establish a profile of teenage pregnancy (<20 years) at hospital in Huambo, Angola. Subjects were categorized into two age groups, 10–16 and 17–19 years. We interviewed 381 mothers the postpartum maternity ward Central Hospital Huambo. Statistical analysis then followed stages, descriptive population through bivariate 2 × table, using chi-squared test evaluate hypothesis homogeneity proportions with significance level 5%. Comparing groups revealed more frequent...

O objetivo foi analisar os fatores associados ao óbito e sobrevida com seqüela em neonatos egressos de gestações que cursaram amniorrexe prematura. Estudo observacional do tipo coorte histórica analisou prontuários pacientes evoluíram quadro prematura < 34 semanas gestação. As variáveis foram cotejadas desfechos neonatal seqüela. Em ambos grupos dados submetidos à análise bivariada, sendo valores exibem significância estatística regressão logística. No modelo multivariado final relação...

Agricultural production in semi-arid regions is limited due to water availability. In addition, the quality available for irrigation often compromised high salt content present. Millet a forage species considered tolerant deficit and moderately tolerant. view of above, objective was evaluate growth millet under saline stress associates. The experiment carried out randomized block design, 4x3 factorial scheme, composed four levels replacement, based on crop evapotranspiration (ETc): 25%.ETc,...

Soil salinity is considered one of the main types soil degradation in semiarid environments around globe. This work aims to evaluate effectiveness conditioners enhance growth and salt extraction ability Salicornia ramosíssima for different moisture contents. plants were cultivated pots which soils treated with following conditioners: control; gypsum + organic matter; elemental sulfur matter. subjected two rates - at 35 85% field capacity. associated higher contents promoted significant...

In Irrigated Perimeter Cachoeira II, Serra Talhada - PE, Brazil, it is common to use water with high content of salts in irrigation, which compromises agricultural production. To assess the development onion at different stages its cycle, two FLUVIC ENTISOLS irrigated EC 200, 700 and 2000 µScm-1 SAR 0.5, 10, 15, 20 25 (mmol L-1)0,5 were used. After transplanting seedlings respective salinewaters. Every thirty days after transplant one plant was collected for evaluation growth variables. At...