Productividad y estabilidad ambiental de cultivares de coliflor en el cinturón hortícola santafesino. Parte I: Extra-Tempranos y Tempranos

The cauliflower crop (Brassica oleracea Linn. Var. Botrytis) has specified environmental requirements which complicate to obtain a good quality product when plants are growing in summer, a period of lower production and higher prices. While there is a broad range of cultivars with different climate adaptation, they are not always accompanied by supporting information on the production characteristics assessed under local conditions. The aim of this work was to evaluate the productive capacity and adaptability of 10 commercial cultivars of early or intermediate crops at the horticultural area of Santa Fe. Three experiments were carried out with transplanted seedlings on rows at 0.7 m at density of 3.2 plants·m-2, in winter (greenhouse and field) and in summer. The experimental design was in random plots with three replications. Significant differences were observed between the information supplied by producers and consultants and with regard to suggested by commercial companies, this emphasize the need for screening the performance of different cultivars under local conditions, in order to improve the recommendation of planting. In Julia and Smilla cultivars, as well as Candid Charm and Bonny cultivars, produced curd of good quality pellets when they were transplanted both in winter and summer. Large curds was yielding for Julia and Smilla and medium size in the others. In Memphis and Incline cultivars the curds yielding were large and with very good quality only when plants were growing in summer, while Madrid and White Magic curds were of very good quality only when harvested in spring.-----------------------------------------------------------------------------------El cultivo de la coliflor (Brassica oleracea Linn. var. Botrytis) presenta requerimientos ambientales que dificultan la obtención de un producto de buena calidad durante la época estival, período de reducida producción y altos precios. Si bien existe una amplia variedad de cultivares con distinta adaptación climática, no siempre están acompa adas de información sobre las características productivas evaluadas en condiciones locales. El objetivo del presente trabajo fue evaluar la capacidad productiva y adaptabilidad de 10 cultivares comerciales tempranas o de ciclo corto en el cinturón hortícola de Santa Fe. Se realizaron tres experimentos con plántulas trasplantadas sobre surcos a 0,7 m de distancia con densidad de 3,2 plantas·m-2; en invierno (campo e invernadero) y en verano. El dise o experimental utilizado fue en parcelas al azar con tres repeticiones. Se observaron diferencias importa