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FREQUÊNCIAS DE IRRIGAÇÃO LOCALIZADA EM CULTIVARES DE MORANGUEIRO NO NORTE DE MINAS GERAIS Texto completo
2015
JOÃO BATISTA RIBEIRO DA SILVA REIS | MÁRIO SÉRGIO CARVALHO DIAS | JEAN RENOVATO DIAS | SILVÂNIO RODRIGUES DOS SANTOS | WAGNER FERREIRA DA MOTA
This study aimed at determining the best irrigation frequency and main cultivar associated with the production of strawberry according to the irrigation management used. The experiment was carried out at the FEMO, linked to the URENM of the EPAMIG. The experiment was installed in split plots, with cultivars Camarosa, Dover, Oso Grande and Tudla on subplot and frequencies FR1, FR2 and FR3 in the plots in ran-domized block with four replications, totaling 48 experimental units. The fruits were harvested, quantified and classified as fruits commercial and non-commercial. Higher commercial fruit yield was observed in cultivar Oso Grande, mainly associated with characteristic fruit that fruit weight is equal or superior to 10g. The culti-var Dover was sole with a higher yield of commercial fruit when subjected to FR2. Regarding the number of commercial fruits, the cultivar Oso Grande showed yield higher than the 'Tudla'. The FR2 showed a better per-formance for all variables compared to FR3. Therefore, the cultivar Oso Grande showed better productive per-formance. Taking into consideration the irrigation’s frequency, and for higher strawberry yields, the frequen-cies FR1 and FR2 can be used.
Mostrar más [+] Menos [-]FLORESCIMENTO INDUZIDO DA JUREMA PRETA PARA FORNECER PÓLEN À ABELHA MELÍFERA NA ESTIAGEM DA CAATINGA Texto completo
2015
ALINE DOS SANTOS SILVA | NAYANNY DE SOUSA FERNANDES | ARIANNE MOREIRA CAVALCANTE | AFONSO ODÉRIO NOGUEIRA LIMA | BRENO MAGALHÃES FREITAS
The aim of this study was to investigate the possibility of increasing pollen supply to honey bees (Apis mellifera) during the dry season in Caatinga (shrub vegetation of NE Brazil) by inducing Mimosa tenui-flora to bloom. The work was carried out from August to December 2012 in Altamira Apícola Apiaries, situat-ed at Limoeiro do Norte – Ceará, Brazil. The experiment comprised three phases: Phase 1 – the amount of wa-ter needed to induce the blooming of Mimosa tenuiflora (T0L, T250L, T500L, T750L and T1000L); Phase 2 – Floral biology and flower visitors; Phase 3 – pollen harvested by the colonies and percentage of M. tenuiflora in the honey bee diet by sampling and comparing pollen loads from colonies placed 20m with those more than 3km away from the induced plants. Results of the Phase 1 showed that the treatments 3, 4 and 5 induced blooming, and T1000L produced a greater number of inflorescences (p <0.05). Blooming reached its peak eight days after induction. Hymenoptera represented more than 95% of floral visitors with Apis mellifera, Trigona spinipes and Melipona subnitida as the most frequent bee species. Palynological analyses carried out in phase 3 showed a significant (p<0,05) increment in pollen collection and the participation of M. tenuiflora pollen in the diet of colonies situated 20 meters from the induced plants. Induction of flowering Mimosa tenuiflora increased the supply and collection of pollen by bees in the critical period of the year, minimizing the effect of drought on the colonies.
Mostrar más [+] Menos [-]AVALIAÇÃO NUTRICIONAL DO BAGAÇO DE CANA-DE-AÇÚCAR ENRIQUECIDO COM VINHAÇA EM DIETAS PARA COELHOS EM CRESCIMENTO Texto completo
2015
FELIPE NORBERTO ALVES FERREIRA | WALTER MOTTA FERREIRA | KATIUSCIA CRISTINA DAS NEVES MOTA | CLARICE SPERIDIÃO SILVA NETA | LEONARDO BOSCOLI LARA | ESTÁCIO ALVES DOS SANTOS
Aiming to evaluate the digestive use and performance of growing rabbits fed with diets con- taining sugarcane bagasse enriched with vinasse, 118 New Zealand white rabbits was used in a digestibility, caecotrophy and performance trials. The experimental design was completely randomized, being applied in the digestibility and caecotrophy three treatments (a reference diet, a diet containing sugarcane bagasse and a diet containing sugarcane bagasse enriched with vinasse) and in performance trial, four treatments (0, 50, 100 and 150 g kg - 1 of bagasse enriched with vinasse). The data were subjected to variance analysis and subsequently carried out comparisons between the averages of the treatments. The bagasse enriched or not with vinasse changes consumption, excretion and the digestibility coefficients of dry matter, mineral matter, organic matter, crude protein, ether extract and gross energy. The inclusion of vinasse promotes the improvement of the values of digestible energy and digestible protein of bagasse. There was no change in the dry matter of the ceco- trophes, while there wasn’t on the crude protein of cecotrophes by the inclusion of the bagasse enriched or not with vinasse. There was a reduction of the nutritional contribution in dry matter, from the inclusion of test feeds. This did not affect nutritional contribution in crude protein. The use of bagasse enriched with vinasse in diets for growing rabbits proved viable, so that the inclusion did not alter the average daily weight gain of ani- mals and therefore, the time required to reach slaughter weight.
Mostrar más [+] Menos [-]MATURAÇÃO FISIOLÓGICA DE SEMENTES DE PIMENTA ‘BODE VERMELHA’ Texto completo
2015
VANESSA DAMASCENO GONÇALVES | DANIELLE HELENA MÜLLER | CARMEN LÚCIA FERREIRA FAVA | ELISANGELA CLARETE CAMILI
This research aimed to evaluate the physiological quality of pepper (Capsicum chinense Jacq.) var. Bode Vermelha seeds, obtained from fruits at different ripening stages. The fruits of C. Chinese were separated according to the ripening stages, based on pericarp color (green fruits – stage 1, orange fruits – stage 2, light red fruits – stage 3, red fruits – stage 4, and carmine-red fruits – stage 5). To evaluate the ripeness and the physiological quality of the seeds were determined the biometric characteristics of the fruits and seeds, mass of thousand seeds, seeds water content, electrical conductivity, standard germinations test, speed of germination index, percentage of normal seedlings, speed of seedlings formation, accelerated aging, and seedling length. The characters length, diameter, weight, and number of seeds of the fruits and length, width, thickness, and mass of the seeds were analyzed by the estimated parameters using descriptive statistics. For the other variables was used the completely randomized design. The results were submitted to variance analysis and comparison of means by the Scott-Knott test at 5% probability. The ripeness stage affects the physiological quality of C. chinense Jacq. var. Bode Red seeds, being the seeds from red (stage 4) to carmine-red (stage 5) fruits those with the best performance thus, they are physiologically ripe, being the most indicated to seeds obtaining.
Mostrar más [+] Menos [-]INFLUÊNCIA DA ESTRUTURA DA VEGETAÇÃO NA SELEÇÃO DA DIETA POR OVINOS EM ÁREA DE CERRADO Texto completo
2015
FRANCIELLEN MORAIS-COSTA | GABRIELA ALMEIDA BASTOS | ANA CLÁUDIA MAIA SOARES | YULE ROBERTA FERREIRA NUNES | LUCIANA CASTRO GERASEEV
It was objective to evaluate the influence of vegetation structure in the selection of plant species by sheep in Cerrado (Brazilian savanna). The research was conducted in an area of Cerrado sensu stricto in the north of Minas Gerais between January 2009 and March 2010. A phytosociological survey conducted the anal-ysis of the vegetation structure, using the plot method. In the tree stratum were delimited 38 continuous plots of 20 m × 20 m. In the regenerant stratum, were allocated sub-plots of 5 m × 5 m. In herbaceous stratum were made two transects in the area of pasture and every 2 m, with the movable square of 0.50 cm × 0.50 cm, 283 points for each transect (566 m).To the identification of the selected species, were used three sheep of the breed Santa Inês, which were kept by grazing in the experimental area and accompanied by observers. In the vegetation were identified 1288 tree, 102 regenerating and 1388 herbaceous individuals, grouped in 117 species distributed in 72 genera and 33 families, among these species: Tachigali rugosa, Heteropterys by sonimifolia, Astronium fraxinifolium, Lantana fucata, Evolvulus sp. e Rhynchospora sp. were important. The selected spe-cies by sheep in grazing, both in the rainy and dry season, in more than 50% species were: Casearia sylvestris, Erythroxylum deciduum, Heteropterys by sonimifolia e Ximenia americana. The feeding preference of sheep in the rainy season was by the species of herbaceous stratum, in the dry period by the species of the tree and re-generating strata. These species are structural bio-indicators of the Cerrado biome, for the grazing of sheep. It is necessary to evaluate, identify and quantify the chemical compounds of selected vegetal species because these can act as nutritional bio-indicators and potential in sheep feeding.
Mostrar más [+] Menos [-]PROPRIEDADES FÍSICAS DOS FRUTOS DE AMENDOIM DURANTE A SECAGEM Texto completo
2015
WILLIAN DIAS ARAUJO | ANDRÉ LUÍS DUARTE GONELI | ROBERTO CARLOS ORLANDO | ELTON APARECIDO SIQUEIRA MARTINS | CESAR PEDRO HARTMANN FILHO
The present work was accomplished with the objective of evaluating the drying effect on the peanut fruits physical properties. Peanut fruits with an initial moisture content of 0.63 decimal db were dried with a temperature of 40 ºC. Bulk density, true density, porosity, thousand - grain weight, sphericity, circularity, projected area, surface area and surface/volume ratio physical properties were determined. Based on these re- sults, it is concluded that reducing the moisture content promotes reduction in all the physical properties of pea- nut fruits, except the surface/volume ratio that have their values increased with the moisture content reduction. The circularity as sphericity of the peanut fruit values was reduced during the drying process.
Mostrar más [+] Menos [-]POPULAÇÃO MICROBIANA, DISPONIBILIDADE DE NUTRIENTES E CRESCIMENTO DE UMBUZEIRO EM SUBSTRATOS CONTENDO RESÍDUOS ORGÂNICOS Texto completo
2015
ERIKA VALENTE DE MEDEIROS | KRYSTAL DE ALCANTARA NOTARO | BRUNA MORAIS DE SOUZA | ALINE OLIVEIRA SILVA | GUSTAVO PEREIRA DUDA | MAIRON MOURA DA SILVA
POPULAÇÃO MICROBIANA, DISPONIBILIDADE DE NUTRIENTES E CRESCIMENTO DE UMBUZEIRO EM SUBSTRATOS CONTENDO RESÍDUOS ORGÂNICOS Texto completo
2015
ERIKA VALENTE DE MEDEIROS | KRYSTAL DE ALCANTARA NOTARO | BRUNA MORAIS DE SOUZA | ALINE OLIVEIRA SILVA | GUSTAVO PEREIRA DUDA | MAIRON MOURA DA SILVA
The umbu is an important fruit for the northeast of Brazil because it is being used in reforestation areas and has great economic potential. However, there is a gap on propagation techniques of this culture that is a crucial step for the successful of plant development. Thus, the objective of the present study was to evaluate the effects of alternative substrate on the growth of umbu rootstock, fertility attributes, and microbial populations of these mixtures.The experimental design was completely randomized with 10 treatments: TA = soil + sand (1:1); A = sand; ECSC = goat manure + Plantmax® (1:3); EBSC = manure + Plantmax® (1:3); ECA = goat manure + sand (1:3); EBA = manure + sand (1:3); ECBSC = manure + goat manure + Plantmax® (1:1:3); ECBA = manure + goat manure + sand (1:1:3); HSC = humus + Plantmax® (1:3) and HA = humus + sand (1:3),with four replications. The addition of residues promoted the quality of the umbu rootstock, especially when mixed with a commercial substrate composed of vegetable organic matter and expanded vermiculite. With multivariate clustering, three groups acknowledged a similarity between the substrate mixtures. The use of humus or goat manure mixed with the commercial substrate is recommended for the production of umbu rootstock.
Mostrar más [+] Menos [-]POPULAÇÃO MICROBIANA, DISPONIBILIDADE DE NUTRIENTES E CRESCIMENTO DE UMBUZEIRO EM SUBSTRATOS CONTENDO RESÍDUOS ORGÂNICOS Texto completo
2015
MEDEIROS, ERIKA VALENTE DE | NOTARO, KRYSTAL DE ALCANTARA | SOUZA, BRUNA MORAIS DE | SILVA, ALINE OLIVEIRA | DUDA, GUSTAVO PEREIRA | SILVA, MAIRON MOURA DA
ABSTRACT: The umbu is an important fruit for the northeast of Brazil because it is being used in reforestation areas and has great economic potential. However, there is a gap on propagation techniques of this culture that is a crucial step for the successful of plant development. Thus, the objective of the present study was to evaluate the effects of alternative substrate on the growth of umbu rootstock, fertility attributes, and microbial populations of these mixtures.The experimental design was completely randomized with 10 treatments: TA = soil + sand (1:1); A = sand; ECSC = goat manure + Plantmax(r) (1:3); EBSC = manure + Plantmax(r) (1:3); ECA = goat manure + sand (1:3); EBA = manure + sand (1:3); ECBSC = manure + goat manure + Plantmax(r)(1:1:3); ECBA = manure + goat manure + sand (1:1:3); HSC = humus + Plantmax(r)(1:3) and HA = humus + sand (1:3),with four replications. The addition of residues promoted the quality of the umbu rootstock, especially when mixed with a commercial substrate composed of vegetable organic matter and expanded vermiculite. With multivariate clustering, three groups acknowledged a similarity between the substrate mixtures. The use of humus or goat manure mixed with the commercial substrate is recommended for the production of umbu rootstock. | RESUMO: O umbuzeiro é uma frutífera importante para o nordeste do Brasil porque está sendo utilizada em áreas de reflorestamento e tem potencial econômico. Entretanto, existe uma lacuna a respeito das técnicas de propagação desta cultura, etapa crucial para o bom desenvolvimento da planta. Nesse contexto, este trabalho tem como objetivo avaliar os efeitos de substratos alternativos sobre o crescimento de porta-enxerto de umbuzeiro e sobre atributos de fertilidade e populações microbianas dessas misturas. O delineamento experimental foi inteiramente casualizado, com dez tratamentos: TA= solo + areia (1:1); A= areia; ECSC= esterco caprino + Plantmax(r) (1:3); EBSC= esterco bovino + Plantmax(r) (1:3); ECA= esterco caprino + areia (1:3); EBA= esterco bovino + areia(1:3); ECBSC= esterco caprino + esterco bovino + Plantmax(r) (1:1:3); ECBA = esterco caprino + esterco bovino + areia (1:1:3); HSC = húmus + Plantmax(r) (1:3) e HA = húmus + areia (1:3), com quatro repetições. A adição de resíduos promoveu uma melhoria na qualidade da produção de porta-enxerto de umbuzeiro, principalmente quando adicionados ao substrato comercial que é a base de matéria orgânica de origem vegetal e vermiculita expandida. Com a análise multivariada de agrupamento perceberam-se três grupos de similaridade. Recomenda-se a utilização de húmus de minhoca ou esterco caprino adicionado ao substrato comercial na produção de porta-enxerto de umbuzeiro.
Mostrar más [+] Menos [-]VIGOR TESTS ASSOCIATION AS AN ALTERNATIVE FOR PRECISE AND EFFICIENT ASSESSMENT OF MAIZE SEED QUALITY Texto completo
2015
MARCOS ALTOMANI NEVES DIAS | VITOR HENRIQUE VAZ MONDO | SILVIO MOURE CICERO | NAYARA ROBERTO GONÇALVES | CIBELE APARECIDA TEIXEIRA DA SILVA
VIGOR TESTS ASSOCIATION AS AN ALTERNATIVE FOR PRECISE AND EFFICIENT ASSESSMENT OF MAIZE SEED QUALITY Texto completo
2015
MARCOS ALTOMANI NEVES DIAS | VITOR HENRIQUE VAZ MONDO | SILVIO MOURE CICERO | NAYARA ROBERTO GONÇALVES | CIBELE APARECIDA TEIXEIRA DA SILVA
This study aimed to associate two concepts of seed vigor testing, the aging and seedling growth using image analysis, providing a feasible and time-saving way to evaluate maize seed vigor in large scale. For this purpose, five seed lots with different vigor levels from two single hybrids were used. The seeds were characterized by moisture content, germination, seedling emergence, seedling emergence speed index, accelerated aging and cold tests. The treatments were composed by varying the accelerated aging periods (0, 24, 48, 72 and 96h) and seedling growth periods (48 and 72h), before submitting the seedlings to image analysis for seedling root length measurement. Considering the results obtained, the adaptation of accelerated aging test by reducing the aging duration from 96h to 48h, and the replacement of the germination test by seedling root length measurement using image analysis could be considered a potential tool for maize seed vigor assessment. The treatments composed of 48h of seed aging followed by seedlings root length measurements using image analysis provided reliable data, compared to traditional vigor tests and it could be considered an efficient and timesaving approach, associating two different concepts of seed vigor analysis.
Mostrar más [+] Menos [-]VIGOR TESTS ASSOCIATION AS AN ALTERNATIVE FOR PRECISE AND EFFICIENT ASSESSMENT OF MAIZE SEED QUALITY Texto completo
2015
DIAS, MARCOS ALTOMANI NEVES | MONDO, VITOR HENRIQUE VAZ | CICERO, SILVIO MOURE | GONÇALVES, NAYARA ROBERTO | SILVA, CIBELE APARECIDA TEIXEIRA DA
RESUMO: O experimento teve como objetivo associar conceitos para avaliação do vigor de sementes, o envelhecimento acelerado e crescimento de plântulas medido por meio da análise de imagens. Para tanto, cinco lotes de sementes com diferentes níveis de vigor de dois híbridos simples foram utilizados. As sementes foram caracterizadas pelo teor de água, germinação, porcentagem e índice de velocidade de emergência de plântulas, envelhecimento acelerado e teste de frio. Os tratamentos foram constituídos por diferentes períodos de envelhecimento acelerado (0, 24, 48, 72 e 96h) e de crescimento de plântulas (48 e 72h) e, em seguida, as plântulas, submetidas à análise de imagens para mensuração do comprimento de raízes. A adaptação do teste de envelhecimento acelerado, reduzindo a duração do envelhecimento de 96h para 48h e a substituição do teste de germinação pela mensuração do comprimento de raízes das plântulas por meio da análise de imagens, comprovou-se um método potencial para avaliação da qualidade de sementes de milho. Assim, os tratamentos compostos por 48h de envelhecimento, seguido pela mensuração do comprimento de raízes utilizando a análise de imagens, forneceram dados confiáveis em comparação aos testes de vigor tradicionais e podem ser considerados uma nova abordagem para a análise de vigor de sementes. | ABSTRACT: This study aimed to associate two concepts of seed vigor testing, the aging and seedling growth using image analysis, providing a feasible and time-saving way to evaluate maize seed vigor in large scale. For this purpose, five seed lots with different vigor levels from two single hybrids were used. The seeds were characterized by moisture content, germination, seedling emergence, seedling emergence speed index, accelerated aging and cold tests. The treatments were composed by varying the accelerated aging periods (0, 24, 48, 72 and 96h) and seedling growth periods (48 and 72h), before submitting the seedlings to image analysis for seedling root length measurement. Considering the results obtained, the adaptation of accelerated aging test by reducing the aging duration from 96h to 48h, and the replacement of the germination test by seedling root length measurement using image analysis could be considered a potential tool for maize seed vigor assessment. The treatments composed of 48h of seed aging followed by seedlings root length measurements using image analysis provided reliable data, compared to traditional vigor tests and it could be considered an efficient and time-saving approach, associating two different concepts of seed vigor analysis.
Mostrar más [+] Menos [-]VARIABILIDADE ESPACIAL DE ATRIBUTOS FÍSICOS DO SOLO EM ÁREA DE ENCOSTA SOB PROCESSO DE DEGRADAÇÃO Texto completo
2015
FRANCIEZER VICENTE DE LIMA | GUTTEMBERG DA SILVA SILVINO | RICHARDSON SOARES DE SOUZA MELO | ELDER CUNHA LIRA | THIAGO DE SOUZA RIBEIRO
VARIABILIDADE ESPACIAL DE ATRIBUTOS FÍSICOS DO SOLO EM ÁREA DE ENCOSTA SOB PROCESSO DE DEGRADAÇÃO Texto completo
2015
FRANCIEZER VICENTE DE LIMA | GUTTEMBERG DA SILVA SILVINO | RICHARDSON SOARES DE SOUZA MELO | ELDER CUNHA LIRA | THIAGO DE SOUZA RIBEIRO
The physical conditions of the soil are directly related to management practices and relief for- mat. Lack of proper management can lead to soil erosion and consequent degradation of these areas. Currently, studies of spatial variability analysis to enable better decisions and resolutions of such problems. The present study aimed to evaluate the spatial variability of soil water infiltration, soil density and texture in the hilly area of the degradation process. The survey was conducted in the hilly area cultivated with grassland, located be- tween Areia and Remigio, two towns from Paraíba state. The soil was sampled at the regular grid with mesh (20x20m) between sample points, making a total of 49 points, into two depths, 0 - 10 cm, 10 - 20 cm, totaling 98 samples. The analyze of spatial variability was doing by semivariogram geostatistical analysis, with data inter- polation by kriging and make maps. All of them physical attributes analyzed presents spatial dependence since no one showed pure nugget effect. It was verified through the maps that there was a very clear relationship be- tween infiltration and other soil physical characteristics, observing this correlation mainly in the upper south- west slope.
Mostrar más [+] Menos [-]VARIABILIDADE ESPACIAL DE ATRIBUTOS FÍSICOS DO SOLO EM ÁREA DE ENCOSTA SOB PROCESSO DE DEGRADAÇÃO Texto completo
2015
LIMA, FRANCIEZER VICENTE DE | SILVINO, GUTTEMBERG DA SILVA | MELO, RICHARDSON SOARES DE SOUZA | LIRA, ELDER CUNHA | RIBEIRO, THIAGO DE SOUZA
RESUMO: As condições físicas do solo são diretamente relacionadas com as práticas de manejo e o formato do relevo. A falta de manejo adequado pode levar os solos a processos erosivos e consequentemente degradação dessas áreas. Atualmente, estudos de variabilidade espacial permitem obter uma melhor análise para tomada de decisões e resoluções das referidas problemáticas. Pensando nisso, o presente estudo teve como objetivo avaliar a variabilidade espacial da infiltração de água no solo, densidade do solo e textura em área de encosta sobre processo de degradação. A pesquisa foi realizada em área de encosta com cultivo de pastagem, localizada entre os municípios de Areia (PB) e Remígio (PB). O solo foi amostrado em grade com malha regular (20 x 20m) entre pontos amostrais, perfazendo um total de 49 pontos em duas profundidades (0-10 cm; 10-20 cm), totalizando 98 amostras. Para a análise da variabilidade espacial foi utilizado a geoestatística, por meio da análise semivariográfica, interpolação dos dados por krigagem e construção de mapas de isolinhas. Todos os atributos físicos analisados apresentaram dependência espacial, uma vez que nenhum deles mostrou efeito pepita puro. Pôde-se verificar através dos mapas que houve uma relação muito clara entre a infiltração e os demais atributos físicos do solo, observando essa correlação principalmente na parte superior sudoeste da encosta. | ABSTRACT: The physical conditions of the soil are directly related to management practices and relief format. Lack of proper management can lead to soil erosion and consequent degradation of these areas. Currently, studies of spatial variability analysis to enable better decisions and resolutions of such problems. The present study aimed to evaluate the spatial variability of soil water infiltration, soil density and texture in the hilly area of the degradation process. The survey was conducted in the hilly area cultivated with grassland, located between Areia and Remigio, two towns from Paraíba state. The soil was sampled at the regular grid with mesh (20x20m) between sample points, making a total of 49 points, into two depths, 0-10 cm, 10-20 cm, totaling 98 samples. The analyze of spatial variability was doing by semivariogram geostatistical analysis, with data interpolation by kriging and make maps. All of them physical attributes analyzed presents spatial dependence since no one showed pure nugget effect. It was verified through the maps that there was a very clear relationship between infiltration and other soil physical characteristics, observing this correlation mainly in the upper southwest slope.
Mostrar más [+] Menos [-]MODELAGEM E MAPEAMENTO DA DEGRADAÇÃO DA CAATINGA Texto completo
2015
IÊDE DE BRITO CHAVES | PAULO ROBERTO MEGNA FRANCISCO | EDUARDO RODRIGUES VAIANA DE LIMA | LÚCIA HELENA GARÓFALO CHAVES
Desertification is a land degradation process of the arid, semi-arid and sub-humid natural envi-ronment, almost always associated with the intensification of the erosive effects of rainfall. Nowadays, with the availability of technologies in remote sensing and geoinformatics inventories and diagnostics can to be per-formed with great ease and low cost in large territories. Using these new technologies, this study gathered in-formation on vegetation, topography and soil, in a estimation model of land degradation, that was applied to the watershed of the river Taperoá (5686.4 km2), located on the plateau of Borborema in the state of Paraíba. The results show that the proposed model was able to predict faithfully land degradation in the basin; and despite the high level of degradation of the vegetation (59.2%) and of the susceptibility to erosion of the soil (59.4%), the flat and soft slope in 87% of the lands contributes to minimize the prognosis of the degradation, that shows the predominance of medium-grade class, in 46.2% of the basin. The most critical areas of the basin, with 26.9% coverage, represented by high and very high classes of degradation are concentrated in the lower and the middle third along the drainage, showing there, one of the desertification nucleus of the region Cariri in Parai-ba, where the erodibility of the soil and vegetation degradation are higher.
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