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| Mon,Rodolfo; Irurtia,Carlos; Fernando Botta,Guido; Pozzolo,Oscar; Bellora Melcón,Fernando; Rivero,David; Bomben,Miguel. |
| The effects of supplementary irrigation on soil chemical and physical properties were studied in 21 locations in the north of the rolling pampa region of Argentina. The chemical and physical variables were measured in top soil (0-100 mm) to compare irrigated and non-irrigated soils. Chemical variables were: electrical conductivity (EC), pH, exchangeable sodium percentage (ESP), and organic mater content. Physical variables included structural index (SI) and percolation index (PI) measured in the laboratory, as well as infiltration, runoff, and soil losses, measured in the field with a small portable rainfall simulator. Water quality was established according to its chemical composition and Riverside USA classification. In irrigated soils, chemical data... |
| Tipo: Journal article |
Palavras-chave: Erosion risk; Infiltration; Sodication; Supplementary irrigation. |
| Ano: 2007 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202007000300002 |
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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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