Resumo

IBARRA ANCHUNDIA, Dayana Cristina et al. Evaluación de diferentes tipos de controles de roya (Hemileia vastatrix Berk. & Broome) y pestalotiopsis (Pestalotia sp.), en el cultivo de la fruta milagrosa (Synsepalum dulcificum ADC). Siembra [online]. 2022, vol.9, n.2, e4007. ISSN 2477-8850.  https://doi.org/10.29166/siembra.v9i2.4007.

In Ecuador, production of non-traditional fruits increases annually in 4%. The miraculous fruit (Synsepalum dulcificum.has become an excellent option as a non-traditional natural sweetener. However, this plant is susceptible to diseases such as rust (Hemileia vastatrix) and pestalotiopsis (Pestalotia sp., which affect the leaf area decreasing metabolic processes and the photosynthetic development. Silicon in plants affects pathogen infection and can contribute in this crop with rust and pestalotiosis control. In this study, different treatments were evaluated for rust and pestalotiosis control: 1) soil silicon application, 2) foliar silicon application, 3) chemical control, 4) biological control and 5) the control without any treatment. Variables evaluated were: a) incidence of rust and pestalotiopsis on leaves, b) incidence of rust and pestalotiopsis on fruits; c) fruit quality (healthy and fruits with high quality); and d) yield of fruits. Incidence of rust and pestalotiopsis on leaves and fruits were lower with the chemical control, reducing the diseases incidence to less than 2%. In addition, a positive relationship was obtained between the chemical control and fruit quality, since no damage were observed were observed, and the yield reached 202 kg ha-1 year-1 of miraculous fruits.

Palavras-chave : non-traditional fruits; fruit quality; disease incidence; phytosanitary problems; crop yield.

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