Validation of the PhenoGlad model and determination of planting dates of the gladiolo for the state of Paraná

Mathematical models that simulate crop development are important tools to help growers plan management practices and harvest time for cut flowers such as gladiolus. The objective of this work was validate the PhenoGlad model State Paraná, determining planting date marketing Day Dead, quality floral stems. validation carried out through field tests in five towns namely: Cascavel, Dois Vizinhos, Marechal Cândido Rondon, Palotina, Santa Helena. experiments were during year 2019. run each location meteorological data early, simulated period available at weather station these towns, intermediate II, late cycles. determined average dates (Julian days) year. variables analyzed stages according phenological scale culture, number leaves, florets, classification stems standards Veilling Holambra. showed accuracy simulating gladiolus culture state Paraná is also suitable predicting damage caused by extreme temperatures stems, which confirmed sepals petals best performance observed when vegetative crop, presenting a low error 0.54 leaf. In production different studied from August 1 23. Cascavel Rondon presented higher florets than other evaluated.