Data/hora: 18/06/2024 04:27:39

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: 	--
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