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| Registros recuperados: 15 | |
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| Makombe, Godswill; Namara, Regassa E.; Hagos, Fitsum; Awulachew, Seleshi Bekele; Ayana, Mekonnen; Bossio, Deborah A.. |
| Agriculture is the most significant contributor to Ethiopia’s economy. Most of the agricultural production is under rainfed conditions and thus extremely sensitive to rainfall variability. Irrigation development, including smallholder irrigation, is used by the Ethiopian Government to attempt to mitigate the effects of rainfall variability. In this study, we look at smallholder irrigation - modern and traditional irrigation systems. A detailed description of the cropping patterns is given. The stochastic frontier production function approach is used to estimate technical inefficiency, and constraints to production are analyzed. Since the traditional system is found to be efficient but on a lower production frontier, the study shows that significant gains... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Rainfed farming; Irrigated farming; Efficiency; Irrigation schemes; Small scale systems; Cropping patterns; Crop production; Economic aspects; Statistical analysis; Crop Production/Industries; Farm Management. |
| Ano: 2011 |
URL: http://purl.umn.edu/113012 |
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| Makambe, Godswill; Namara, Regassa E.; Hagos, Fitsum; Awulachew, Seleshi Bekele; Ayana, Mekonnen; Bossio, Deborah A.. |
| Agriculture is the most significant contributor to Ethiopia’s economy. Most of the agricultural production is under rainfed conditions and thus extremely sensitive to rainfall variability. Irrigation development, including smallholder irrigation, is used by the Ethiopian Government to attempt to mitigate the effects of rainfall variability. In this study, we look at smallholder irrigation - modern and traditional irrigation systems. A detailed description of the cropping patterns is given. The stochastic frontier production function approach is used to estimate technical inefficiency, and constraints to production are analyzed. Since the traditional system is found to be efficient but on a lower production frontier, the study shows that significant gains... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Rainfed farming; Irrigated farming; Efficiency; Irrigation schemes; Small scale systems; Cropping patterns; Crop production; Economic aspects; Statistical analysis; Agricultural and Food Policy; Crop Production/Industries; Production Economics. |
| Ano: 2011 |
URL: http://purl.umn.edu/118298 |
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| BARROS, L. C. de; RIBEIRO, P. E. de A.. |
| As barraginhas são pequenas bacias escavadas no solo em formato de prato, meia-lua e de arco de flecha, com diâmetro médio de 16 m e profundidade média de 1,2 m. São construídas dispersas nas pastagens, lavouras (no final das curvas de nível) e nas margens de estradas, para captar água de enxurradas, controlando a erosão e conservando a água no subsolo. As barraginhas não devem ser construídas em cursos de água perenes, nas áreas de proteção permanente (APPs), no interior das voçorocas e das grotas e em terrenos com inclinação acima de 12%. Um sistema de Barraginhas construídas em uma microbacia promove a elevação do lençol freático e o umedecimento das baixadas, proporcionando segurança hídrica para lavouras, mesmo em regiões semiáridas. Com a água... |
| Tipo: Artigo de divulgação na mídia (INFOTECA-E) |
Palavras-chave: Barraginha; Captação de água de chuva; Barragem; Açude; Construção Rural; Manejo de Água; Manejo do Solo; Water harvesting; Water reservoirs; Surface water; Rain; Rainfed farming. |
| Ano: 2017 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1099353 |
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| SANTANA, M. da S.; ANDRADE, E. M. de; GIONGO, V.; SALVIANO, A. M.; CUNHA, T. J. F.. |
| A densidade do solo exerce funções chaves e afeta diretamente a aeração, infiltração e capacidade de retenção de água no solo, bem como o desenvolvimento das plantas. A densidade é influenciada pela granulometria do solo, concentração de matéria orgânica, uso da terra e manejo, que afetam a compactação dos solos. Com este estudo, objetivou-se avaliar a densidade do solo em dez diferentes usos da terra (Caatinga preservada, Caatinga degradada, capim-buffel, palma, gliricídia, leucena, feijão, milho, videira e mangueira) no Semiárido brasileiro. As amostras de solo foram coletadas em trincheiras com dimensão 1 m x 1m, nas profundidades: 0-5 cm, 5-10 cm, 10-15 cm, 15-20 cm, 20-30 cm, 30-40 cm, 40-60 cm, 60-80 cm e 80-100 cm. Em todas as camadas, foram... |
| Tipo: Artigo em anais de congresso (ALICE) |
Palavras-chave: Agricultura irrigada; Agricultura dependente de chuva; Agricultura; Agricultura Alternativa; Agricultura de Subsistência; Agricultura Familiar; Agricultura Sustentável; Irrigação; Caatinga; Chuva; Pecuária; Uso da Terra; Agriculture; Sustainable agriculture; Rainfed farming. |
| Ano: 2018 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1103880 |
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| Cavalcante,Eduardo Santos; Lacerda,Claudivan Feitosa de; Costa,Raimundo Nonato Távora; Gheyi,Hans Raj; Pinho,Luciana Luzia; Bezerra,Francisco Mardones Sérvulo; Oliveira,Adriana Cruz de; Canjá,Juvenaldo Florentino. |
| ABSTRACT: Supplemental irrigation during dry spells could reduce maize yield losses in tropical semi-arid regions, notably in small farms. However, good quality water reserves are not sufficient to meet the demands of farming communities. Consequently, our objective was to evaluate the productivity and profitability of maize under different simulated rainfall scenarios, with and without supplemental irrigation (SI) with brackish water. The field experiments were carried out during the cropping seasons of 2018 and 2019 on Ultisol. The experiment followed a randomized block design in the split-plot scheme with four replicates. The plots were formed by simulating the water supply in the soil corresponding to four water scenarios (rainy, normal, drought and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Rainfed farming; Salinity; Supplementary irrigation; Biosaline agriculture. |
| Ano: 2021 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162021000700601 |
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| Registros recuperados: 15 | |
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