Uso de lisímetros de succión para extracción de solución nutritiva del suelo en el cultivo de tomate solanum lycopersicum l
In the study of soil nutrient solution different tools are used that provide relevant information on the physical and chemical properties which crops are grown, the proportion of nutrients absorbed by the plants have a series of chemical processes that are carried out in the soil being necessary to...
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| Médium: | bachelorThesis |
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2017
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| On-line přístup: | http://repositorio.utmachala.edu.ec/handle/48000/11696 |
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Přidat tag | Shrnutí: | In the study of soil nutrient solution different tools are used that provide relevant information on the physical and chemical properties which crops are grown, the proportion of nutrients absorbed by the plants have a series of chemical processes that are carried out in the soil being necessary to permanently monitor the concentration of the salts this substrate used. The lysimeter of suction is a probe that is used for the extraction of samples of the nutrient solution of the soil that through a chemical analysis can determine the exact amount of fertilizer to be supplied, an analysis of that proportion or exact information of the nutritional demands of a crop so the application of different fertilizers fill up its need. Using fertigation in drip watering systems for the production of vegetables in greenhouse that allowed the application and proper management of nutrients. The present research work was carried out in the SANTA INÉS EXPERIMENTAL FARM, which belongs to the Academic Unit of Agricultural Sciences of the Universidad Técnica de Machala, located in El Cambio, Machala City, El Oro Province. The objectives of this research were: 1. To establish the optimum fertirrigation dose of the tomato crop through the measurement of productive parameters and soil extractor solution that allows the rational use of fertilizers; 2. To measure the degree of concentration of the nutrient salts through the electrical conductivity and pH of the soil solution extract; 3. To establish the correlation between solutions of the hydrogen potential (pH) and electrical conductivity (ds / m) of the soil solution. The area used for the test was 18 m2, under greenhouse cover; with a number of plants 54 u; with a distance between watering lines = 0.70 m and a gap between drippers = 0.30 m; the irrigation was given by dripping incorporating the fertilizer through a Venturi meter. It was studied three treatments, using a completely randomized design, for T1 = Testigo (Recommended dose) it used the recommendations of the software fer2000 & COMPO EXPERT, the analysis of variance (ANOVA) showed a statistical difference for treatments in plant height, fruit length, fruit thickness, fruit weight, flowering days, yield per hectare and potential hydrogen ratio (pH ) and electrical conductivity (ds / m). At the end of the research, the best dose of fertigation was the T1 = Testigo (D.r.), which presented the best results in the variables height, days at flowering, fruit size and productivity of fruit per plant. The greater the concentration of a nutrient in the solution of the soil, the lower is the absorption by the root, the first circumstance increases the proportion of the element in the internal solution of the plant. The correlation between hydrogen potential (pH) and electrical conductivity (EC) was 0.4693. |
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