Caracterização agronômica de genótipos de morangueiro cultivados em substrato em período de plantio tardio em sistema orgânico de produção

Abstract

One of the trends in strawberry cultivation is soilless cultivation in substrate, thereby reducing the significance of the planting season in determining transplanting. The aim of this study was to characterize agronomically strawberry genotypes cultivated in substrate during a late planting period in an organic production system. The experimental design for each genotype pair was randomized into subdivided plots, with plots represented by the genotype and subplots by the evaluation months. Three replications, each with 18 plants, were used for each genotype. Evaluations were divided into phenological, plant characterization, and productive aspects. The obtained data were subjected to analysis of variance, and differences between means were compared using the Tukey test at a 5% probability level. For the day-neutral genotypes, DN3 exhibited a later response for all evaluated phenological aspects. Among the short-day genotypes, plants of the DC1 genotype took longer to flower, bear fruits for harvest, and produce stolons. For each evaluation month, DN3 showed plants with a higher number of leaves, diameter, and total chlorophyll. The number of crowns did not show significance. During harvest, the highest number of fruits and production were obtained for the DN3 genotype. Among short-day genotypes, DC10 presented plants with a higher number of leaves, diameter, and total chlorophyll. During harvest, DC10 had a higher number of fruits and production. DN3 is phenologically later than DN6. DC10 is phenologically earlier than the DC01 genotype, although they are similar. DN3 exhibited greater vegetative and productive growth than DN6. DC10 had greater vegetative and productive growth than DC01. The production of short-day genotypes due to late planting was lower than indicated in the literature, and short-day genotypes were more affected by late planting.