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Registro Completo |
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Biblioteca(s): |
Embrapa Pantanal; Embrapa Trigo. |
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Data corrente: |
19/02/1997 |
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Data da última atualização: |
19/02/1997 |
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Autoria: |
ZENTNER, R. P.; CAMPBELL, C. A.; READ, D. W. L.; ANDERSON, C. H. |
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Título: |
An economic evaluation of crop rotations in southwestern Saskatchewan. |
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Ano de publicação: |
1984 |
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Fonte/Imprenta: |
Canadian Journal of Agricultural Economics, v.32, p.37-54, Mar.1984. |
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Idioma: |
Inglês |
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Conteúdo: |
This study reports on an economic analysis of twelve crop rotations considered feasible for southwestern Saskatchewan. The results suggest that producers in this regions should consider selecting a more intensive cropping system than has been the tradition. The three-year fallow-wheat-wheat rotation with recommended rates of nitrogen and phosphorus (N and P) fertilizers provided the highest expected net returns under most reasonable input cost and product price assumptions. Expected net returns for the traditional two-year wheat rotation and for the continuous wheat rotation averaged about 24 percent lower. The application of recommended rates of N fertilizer increased expected net farm income for the three-year and continuous wheat rotations by 6.6 and 10.5 percent, respectively. Use of P fertilizer in the three-year wheat rotation increased expected net farm income by an average of 20.6 percent. Average production costs increased as the proportion of summerfallow in the rotation decreased. Break-even stubble/fallow yield ratios that provided equaivalent net returns from stubble and fallow cropping averaged 64 percent for the three-year wheat rotation and 76 percent for the continuous wheat rotation. Annual income variability was greatest for the continuous crop rotations and lowest for the two-year wheat rotation. |
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Palavras-Chave: |
Avaliacao economica; Break-even yields; Crop rotations; Economic evaluation; Exigencia de recurso; Income variability; Net income; renda liquida; Resource requirements; Rotação de culturas; Variabilidade de renda. |
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Thesagro: |
Análise; Colheita; Economia. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02251naa a2200325 a 4500
001 1790695
005 1997-02-19
008 1984 bl --- 0-- u #d
100 1 $aZENTNER, R. P.
245 $aAn economic evaluation of crop rotations in southwestern Saskatchewan.
260 $c1984
520 $aThis study reports on an economic analysis of twelve crop rotations considered feasible for southwestern Saskatchewan. The results suggest that producers in this regions should consider selecting a more intensive cropping system than has been the tradition. The three-year fallow-wheat-wheat rotation with recommended rates of nitrogen and phosphorus (N and P) fertilizers provided the highest expected net returns under most reasonable input cost and product price assumptions. Expected net returns for the traditional two-year wheat rotation and for the continuous wheat rotation averaged about 24 percent lower. The application of recommended rates of N fertilizer increased expected net farm income for the three-year and continuous wheat rotations by 6.6 and 10.5 percent, respectively. Use of P fertilizer in the three-year wheat rotation increased expected net farm income by an average of 20.6 percent. Average production costs increased as the proportion of summerfallow in the rotation decreased. Break-even stubble/fallow yield ratios that provided equaivalent net returns from stubble and fallow cropping averaged 64 percent for the three-year wheat rotation and 76 percent for the continuous wheat rotation. Annual income variability was greatest for the continuous crop rotations and lowest for the two-year wheat rotation.
650 $aAnálise
650 $aColheita
650 $aEconomia
653 $aAvaliacao economica
653 $aBreak-even yields
653 $aCrop rotations
653 $aEconomic evaluation
653 $aExigencia de recurso
653 $aIncome variability
653 $aNet income
653 $arenda liquida
653 $aResource requirements
653 $aRotação de culturas
653 $aVariabilidade de renda
700 1 $aCAMPBELL, C. A.
700 1 $aREAD, D. W. L.
700 1 $aANDERSON, C. H.
773 $tCanadian Journal of Agricultural Economics$gv.32, p.37-54, Mar.1984.
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Registro original: |
Embrapa Pantanal (CPAP) |
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| Registros recuperados : 7 | |
| 1. |  | AMBROSI, I.; ZENTNER, R. Aspectos econômicos no sistema de manejo conservacionista. In: FERNANDES, J. M.; FERNANDEZ, M. R.; KOCHHANN, R. A.; SELLES, F.; ZENTNER, R. P. (Ed.). Manual de manejo conservacionista do solo para os estados do Rio Grande do Sul, Santa Catarina e Paraná. Passo Fundo: EMBRAPA-CNPT, 1991. p. 63-69 (EMBRAPA-CNPT. Documentos, 1).| Biblioteca(s): Embrapa Trigo. |
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| 2. | | SELLES, F.; KOCHHANN, R. A.; DENARDIN, J. E.; ZENTNER, R. P.; FAGANELLO, A. Distribution of phosphorus fractions in a Brazilian oxisol under different tillage systems. Soil & Tillage Research, Amsterdam, v. 44, n. 1/2, p. 23-34, Dec. 1997.| Biblioteca(s): Embrapa Trigo. |
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| 4. | | SANTOS, H. P. dos; ZENTNER, R. P.; SELLES, F.; AMBROSI, I. Effect of crop rotation on yields, soil chemical characteristics, and economic returns of zero-till barley in southern Brazil. Soil & Tillage Research, Amsterdam, v. 28, p. 141-158, 1993.| Biblioteca(s): Embrapa Trigo. |
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| 6. | | ZENTNER, R. P.; KOCHHANN, R. A.; BOWREN, K. E.; AMBROSI, I.; IGNACZAK, J. C.; SATTLER, A. The effect of phosphorus fertilizer and crop rotations using zero tillage management in southern Brazil. Research Hi-Lites, Swift Current, Saskatchewan, p. 67-72, 1986.| Biblioteca(s): Embrapa Trigo. |
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| Registros recuperados : 7 | |
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| Nenhum registro encontrado para a expressão de busca informada. |
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