Data/hora: 20/06/2024 18:43:19

Biblioteca(s): | Embrapa Semiárido; Embrapa Solos.
Data corrente: | 06/07/1996
Data da última atualização: | 22/11/2002
Autoria: | PORTO, E. R.
Título: | An economic evaluation of selected soil and water management technologies for rainfed agriculture: a study case in the arid zones of Brazil.
Ano de publicação: | 1988
Fonte/Imprenta: | [S.l.]: University of Arizona, 1988.
Páginas: | 343 p.
Idioma: | Inglês
Notas: | Tese Doutorado.
Conteúdo: | Water harvesting techniques were used for increasing water availability for rainfed agriculture and for human consumption. The treatments involving soil and water management for cropping were as follows: (1) traditional; (2) microcatchment; (3) microcatchment plus fertilization with ordinary superphosphate (OSP); (4) microcatchment plus fertilization with manure; and (5) supplemental tank irrigation. A cistern with 50 m3 capacity was construted to provide drinking water. The crop enterprises were cowpeas (Vigna unguiculata)/corn (zea mays), and sorghum (Sorghum bicolor)/cactus (Opuntia spp.)/algaroba (Prosopis juliflora). Both were intercropped. The overall objectives of the study were:(1) to examine the impact of the application of water harvesting techniquestogether with crop management, with and without fertilization on: (i) financial position of the farmer, (ii) profitability of each individual enterprise in cropping, and (iii) labor utilization; (2) to estimate the benefit of a cistern based on the costs of carrying water. All analysis were developed with the aid of Supercalc 4 spreadsheet software. Farm performance measures were: crop production; cash flows; income statements, net worth; cost and returns statements; and labor utilization. The impact of the household cistern was assessed through a benefit cost approach. From the results the following main conclusions were drawn: (1) microcatchment contributed marginally to increased yields; (2) microcatchment combined with OSP produced yield increasses which..
Palavras-Chave: | Arid; Cost; Management; Nordeste; Northeast; Regiao arida; Regiao semi-arida; Semi-arid region.
Thesagro: | Agricultura; Água; Custo; Economia; Manejo; Solo; Tecnologia; Zona Arida.
Thesaurus Nal: | agriculture; soil; technology; water.

Categoria do assunto:

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X Pesquisa, Tecnologia e Engenharia

Registro original: | Embrapa Solos (CNPS)

Exemplares:

CPATSA - (7818-1) - ADD - TS - PP - 01/1988 -  - 1988.00001 - DIS
CNPS - (603-1) - ADD - TS - -- - 88014 - POR/88 - 1992.00082 - DIS