Water use efficiency of coriander produced in a low-cost hydroponic system/Eficiencia do uso da agua na producao do coentro em hidroponia de baixo custo
The increase of water use efficiency in crop production is a clear need in areas with restricted access to this resource and, in these cases, the adoption of forms of cultivation contextualized to local conditions are essential. Thus, the implications of the variation in the amount of seeds per cell...
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Veröffentlicht in: | Revista brasileira de engenharia agrícola e ambiental 2015-12, p.1152 |
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Sprache: | spa |
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Zusammenfassung: | The increase of water use efficiency in crop production is a clear need in areas with restricted access to this resource and, in these cases, the adoption of forms of cultivation contextualized to local conditions are essential. Thus, the implications of the variation in the amount of seeds per cell (0.5, 1.0, 1.5 and 2.0 g) and spacing between cells (7.0, 10.0 and 15.0 cm) on variables related to consumption and water use efficiency for the production of coriander (cv. Tabocas) in a low-cost hydroponic system, an alternative for semiarid regions, were evaluated. A completely randomized experimental design, analysed in 4 x 3 factorial scheme with three replicates, was adopted, and the data were subjected to analysis of variance at 0.05 probability level. It was found that the reduction in the spacing between cells has a better cost-benefit ratio with respect to water consumption, biomass produced and cost of seeds. Therefore, it is recommended the adoption of a spacing of 7.0 cm between cells and the use of 1.0 g seeds per cell; this configuration promoted efficiency of 81.59 g [L.sup.-1] in shoot green mass production and total mass of 62.4 g coriander bunches. Key words: brazilian semiarid region Coriandrum sativum L. prototype validation O incremento da eficiencia do uso da agua na producao das culturas e uma necessidade evidente em regioes com acesso restrito a este recurso e, nesses casos, a adocao de formas de cultivo contextualizadas a realidade local e imprescindivel. Neste contexto, avaliou-se as implicacoes da variacao da quantidade de sementes por celula (0,5; 1,0; 1,5 e 2,0 g) e do espacamento entre celulas (7,0; 10,0 e 15,0 cm) sobre variaveis relacionadas ao consumo e eficiencia do uso da agua na producao de molhos de coentro (cv. Tabocas) em um "modulo hidroponico de baixo custo", alternativo para regioes semiaridas. Adotou-se um delineamento experimental inteiramente casualizado analisado em esquema fatorial 4 x 3, com tres repeticoes cujos dados foram submetidos a analise de variancia em nivel de 0,05 de probabilidade. Verificou-se que a reducao dos espacos entre celulas proporcionou melhor relacao custo beneficio em relacao ao consumo de agua, massa produzida e custo de sementes. Recomenda-se, portanto, a adocao de 7,0 cm de espacamento entre celulas e a utilizacao de 1,0 g de sementes celula-1; esta configuracao proporcionou eficiencia de 81,59 g [L.sup.-1] na producao de massa verde da parte aerea e molhos de 62,4 g de massa total. Pala |
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ISSN: | 1415-4366 |
DOI: | 10.1590/1807-1929/agriambi.v19n12p1152-1158 |