Avaliação de diferentes substratos na produção de mudas de meloeiro (Cucumis melo L.)
Aiming at the production of quality seedlings the substrate is a fundamental part in this activity as it is will define the vitality of the seedling. Consequently mitigating the costs of this operation without compromising the quality of the seedlings is a crucial point for the activity, especially...
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| Formato: | bachelorThesis |
| Idioma: | pt_BR |
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Universidade Federal do Rio Grande do Norte
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| Endereço do item: | https://repositorio.ufrn.br/handle/123456789/40292 |
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| Resumo: | Aiming at the production of quality seedlings the substrate is a fundamental part in this activity as it is will define the vitality of the seedling. Consequently mitigating the costs of this operation without compromising the quality of the seedlings is a crucial point for the activity, especially for small producers, group of Yellow inodorus. The melon variety used was Syngenta® Yellow Titannum Hybrid. The experimental design was completely randomized, with 5 treatments and 4 replications for each treatment, totaling 192 experimental units per treatment. The treatments were distributed as follows: T1 = coconut fiber; T2 = vermiculite + coal + sand; T3 = vermiculite + chicken litter + sand; T4 = coal + chicken litter + sand; T5 = vermiculite + charcoal + chicken litter + sand. Sowing was carried out in a 128-cell polystyrene seedling tray at the densities of one seed per cell. The irrigation used had micro sprinklers fixed on the roof of the greenhouse (nebulizers) with 5mm water slide distributed twice a day. Data collection was performed on the 25th day after sowing, thus ending the experimental period. At this stage, the following parameters were evaluated: Emergence, emergence speed index (LVI), shoot height (Ha), root length (Hr), leaf number (NF), stem diameter (DC) and area leaf (AF). Analysis of variance (ANOVA) was performed and, when necessary, the means were compared by the Tukey test at the 95% confidence level using the aid of the R® statistical program. There was a significant effect between T1, T2 and T5 treatments higher than T3 and T4 treatments providing a higher emergency speed index (IVG) and lower mortality and similar emergencies except for T4 treatment. The plant height reached a higher expressiveness in the T5 treatment. When comparing T1 and T2 treatments no statistical differences were detected between treatments. Root length is evidenced by higher growth in T2 with lower dry mass. Thus the substrate composed of vermiculite charcoal chicken litter and sand provided better development of yellow melon seedlings. |
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