Determinação Da Aptidão Agrícola Da Microrregião De Mossoró-Rn

Araújo, Jurema Maria Silva; Oliveira, Herison Alves de; Bezerra, Hélio Nogueira; Silva, Paulo César Moura da

doi:10.13083/reveng.v21i2.330

Cited by 2 publications

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References 3 publications

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“…A aptidão para pastagem natural e/ou silvicultura encontra-se em 15,34% do território piauiense, sendo este, o uso agrícola menos intensivo. Esse resultado é semelhante ao verificado por Araújo et al, (2013) em uma microrregião de Mossoró-RN, no qual foi determinado que 17,70% da área possui esse tipo de aptidão. O estado possui ainda, 3,34% de suas terras sem aptidão agrícola, sendo essas, referentes a áreas de proteção permanente, representadas principalmente por matas ciliares.…”

Section: Discussionunclassified

Aptidão Agrícola Dos Solos Do Estado Do Piauí

Almeida¹,

Silva²,

Nóbrega³

et al. 2019

NAT

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A avaliação da aptidão agrícola das terras estabelece o uso dos recursos naturais de modo a evitar situações de subutilização ou sobreutilização, pois consiste na interpretação das qualidades do ecossistema, baseando-se nas suas limitações para o uso agrícola e nas alternativas e possibilidades de correção ou redução dessas limitações através de diferentes níveis de manejo. Esse trabalho objetivou realizar o mapeamento da aptidão agrícola das terras do estado do Piauí. O método utilizado para a avaliação da aptidão agrícola das terras foi o Sistema de Avaliação da Aptidão Agrícola das Terras. Foram analisados: dados de 120 perfis descritos no Boletim Técnico N° 63 do Estudo Expedito de Solos no Estado do Piauí elaborado pelo Serviço Nacional de Levantamento e Conservação de Solos da EMBRAPA; a atualização da nomenclatura de perfis de solos descritos no Levantamento Exploratório –Reconhecimento dos solos do Piauí; e o mapa de solos, na escala de 1:500.000, representando a área de estudo e a ocorrência e distribuição das classes de solos predominantes no Estado. A maioria das terras do Piauí possui aptidão agrícola para pastagem plantada (54,57%), possuindo assim áreas menores para utilização agrícola em usos mais intensivos como lavouras (26,74%).Palavras-chave: avaliação de terras, mapa de aptidão agrícola, planejamento do uso da terra. AGRICULTURAL LAND SUSTAINABILITY SOIL OF PIAUÍ STATE, BRAZIL ABSTRACT: The evaluation of the agricultural potential of the land establishes the use of natural resources to avoid situations of underuse or overuse, it consists in the interpretation of ecosystem qualities based on their limitations for agricultural use and alternative and correction or reduction possibilities these limitations through different management levels. The aims of this work were mapping of the agricultural potential of the Piauí state land soils. The method used to find the agricultural potential of the land was called the System Assessment of Agricultural Lands Fitness. It analyzed: 120 profiles data described in Technical Bulletin No. 63 of Estudo Expedito de Solos no Estado do Piauí prepared by the Serviço Nacional de Levantamento e Conservação de Solos of EMBRAPA; updating the naming soil profiles described in Exploratory survey-recognition of Piauí soil; and the soil map in the scale of 1:500,000, representing the study area and the occurrence and distribution of soil classes prevailing in the state. Most of Piauí land has agricultural potential for planted pastures (54,57%), thus having smaller areas for agricultural use in more intensive uses such as crops (26,74%).Keywords: land evaluation, agricultural suitability map, planning of land use.

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Section: Discussionunclassified

Aptidão Agrícola Dos Solos Do Estado Do Piauí

Almeida¹,

Silva²,

Nóbrega³

et al. 2019

NAT

View full text Add to dashboard Cite

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Adapting the land agricultural suitability assessment scheme for drylands edaphoclimatic conditions

Lima,

Souza,

Silva

et al. 2023

Revista Brasileira De Ciência Do Solo

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The rational exploitation of the land requires planning its agricultural use, which can be supported by the agricultural land suitability (ALS) assessment. The scheme to assess ALS proposed by Food Agricultural Organization (FAO) has been adopted in Brazil based on guiding charts for subtropical, humid tropical and semi-arid tropical climate. However, the guiding chart used for the semi-arid region has dramatically limited the ALS in drylands on which rainfed agriculture has been practiced. In this study, an adequation for the ALS assessment regarding the edaphoclimatic conditions of semi-arid region was proposed to improve the representation of agricultural areas and to allow a better planning of soil conservation practices. The ALS of the south region of Ceará State (Brazil) was assessed according to the FAO scheme and its initial adaptation to the Brazilian conditions; subsequently, this assessment was obtained by two adequations. Adequation I disregarded the limiting factor of water availability, while adequation II, besides disregarding the factor of water availability, established new limits for the classes of effective soil depth. The adequations resulted in an increase of 177.19 % in the areas with regular suitability for crops to the detriment of areas with restricted suitability for crops and areas with suitability only for pasture or grazing lands. The adequations increased the agricultural suitability in 41.26 % of the area of the mapping units, and 16.77 % of them were due to the modifications related to the effective soil depth, while the other 26.35 % were due to the changes related to water availability. The results related to water availability were equivalent to those observed through the dynamic analysis of land-use and cover associated with the rainfall, which demonstrated an increase in the areas for rainfed agriculture and a reduction in fallow and pasture areas in the years with rainfall within the climatic normality. The areas considered suitable for crop production with the adequation of the scheme may be included in soil conservation programs.

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Determinação Da Aptidão Agrícola Da Microrregião De Mossoró-Rn

Cited by 2 publications

References 3 publications

Aptidão Agrícola Dos Solos Do Estado Do Piauí

Aptidão Agrícola Dos Solos Do Estado Do Piauí

Adapting the land agricultural suitability assessment scheme for drylands edaphoclimatic conditions

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