Título:	Physical properties and soil degration index in the "Plateau of Guadalupe irrigation district", Piauí state, Brazil.
Autoria:	MASCHIO, R. ANDRADE JÚNIOR, A. S. MOTA, P. R. D. MELO, F. B.
Afiliação:	Rafael Maschio, UFPI; Aderson Soares de Andrade Júnior, Embrapa Meio-Norte; Poliana R. D. Mota, Fapepi/CNPq; Francisco de Brito Melo, Embrapa Meio-Norte.
Ano de publicação:	2008
Referência:	In: INTERNATIONAL CONFERENCE OF AGRICULTURAL ENGINEERING; BRAZILIAN CONGRESS OF AGRICULTURAL ENGINEERING, 37.; INTERNATIONAL LIVESTOCK ENVIRONMENT SYMPOSIUM, 8., 2008, Iguassu Falls. Technology for all: sharing the knowledge for development: proceedings. [Foz do Iguaçu]: CIGR, 2008.
Páginas:	4 p.
Conteúdo:	The management of water and soil is an important aspect of sustainable agricultural production. Knowledge of the physical properties of the soil is essential for the characterization of the soil-water-plant interactions and also for the establishment of irrigation management, in accordance with soil and crop requirements. The objective of this study was to evaluate the physical properties i.e. that pertain to water content, granulometry, bulk density, along with the water retention curve and soil physical degradation index of the "Plateaus of Guadalupe Irrigation District", Piaui State, Brazil. Undisturbed and disturbed soil samples were collected in plots, randomly chosen, as well as in areas of initial preparation, at depths of 0 to 0.2 m and 0.2 to 0.4 m. The water retention curves were molded with suction pressure of -6, -10, -30, -100, -300, -500 and -1500 kPa and adjusted by the Genucthen model. There was an increase in clay levels of the soil depth. The bulk density showed lower values in the areas of initial preparation. The average available soil water was higher in the layer 0 to 0.2 m. Three plots presented problems with the soil physical degradation index, but in general, the soil had good physical conditions for cultivation.
Thesagro:	Planejamento Agrícola
Palavras-chave:	Propriedade do solo Manejo de irrigação
Tipo do material:	Artigo em anais e proceedings
Acesso:	openAccess
Aparece nas coleções:	Artigo em anais de congresso (CPAMN)