Evaluación comparativa de cultivares de cebolla en tres fechas de siembra y trasplante

Given the market and the constant needs of farmers to not only offer better quality vegetables, but also adapt them to their production systems or geography, continuous research and development of new and diverse materials has been required to ask these demands. Within the afore mentioned vegetables, those that are most consumed, such as onions, have been most studied and developed, in which we can find in the market a great diversity of plant materials, both national and foreign, but based on this diversity a series have emerged. of questions such as: do we know the behavior of each variety in Uruguay? Does any variety adapt to my production area and objectives? What are the factors that play a fundamental role if I want to achieve good returns? Does it affect the dates I plant or transplant this crop? How are the resistance of different plant materials to diseases and pests?

This work arises from the need to know how the behavior of various onion materials used in the country is compared to different management in terms of the date of sowing and transplanting, and what factors determine the success of a good harvest, in addition to know what the physiological and organoleptic characteristics of the evaluated varieties are like. In this way, we sought to provide a certain answer to some of the aforementioned questions.

In order to find an answer in this thesis work, 13 varieties of onion were used, divided into three trials depending on the type of material cycle (DC, DI or DL). The trials started from three different sowing dates and therefore also transplanting. Throughout the growth period, different parameters were measured on successive occasions to generate sufficient information and from which to compare the growth evolution between the varieties, physiological states, quality and harvest time. Post-harvest measurements of different physiological attributes that determine commercial quality were also carried out. The variability of these attributes is necessary to know given the different objectives of the producers.