Resumo

MORENO-POVEDA, Germán A.; FLOREZ-RONCANCIO, Víctor J.  e  GONZALEZ-MURILLO, Carlos A.. The use of the weighing lysimeter in carnation (Dianthus caryophyllus L.) generates saving in fertigation. rev.udcaactual.divulg.cient. [online]. 2021, vol.24, n.2, e1940.  Epub 06-Dez-2021. ISSN 0123-4226.  https://doi.org/10.31910/rudca.v24.n2.2021.1940.

The amount of fertigation excess or deficit generates nutritional unbalances given it affects pH, CE, and the nutrients balance influencing the plant development performance. In addition, the uncontrolled fertigation volume can cause an excess of leachates with detrimental effects on the environment. The Fertigation in carnation production in the Bogotá savanna is done empirically, therefore, it is essential to adjust the fertigation volume to the needs of the crop to avoid the mentioned problems. For this reason, the effect of the control of the fertigation volume with weighting lysimeters was evaluated in comparison with the management of traditional fertigation in the performance of the spray carnation plants sown in substrate under greenhouse conditions. For the evaluation, an experimental design was carried out in complete randomized blocks with a lysimeter crop system (LCS) and a traditional crop system without a lysimeter (WLS) as treatments. Irrigation volume, whole plant nutritional content in five phenological stages, pH, primary and secondary (Ca - Mg) nutrients in the substrate, and drainage solution were the variables evaluated. The LCS generates saving in the use of fertigation compared with WLS. Differences were found in the continuum plant - substrate - leached in N, K, Mg, as well as in the pH of the substrate. The LCS treatment was more efficient by generating greater dry mass accumulation, with the use of less water and nutrients without affecting the yield or quality.

Palavras-chave : Soilless culture system; Nutrients; pH; Dry mass; Llysimetry..

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