%0 Journal Article
%T Grados d赤as acumulados en naranjas y mandarinas sobre pie trifolio en la zona de Concordia (Entre R赤os)
%A Rivadeneira
%A M.F.
%J Horticultura Argentina
%D 2012
%I Asociaci車n Argentina de Horticultura (ASAHO)
%X Entre R赤os province is well known for its citrus fruit production; however there is a lack of information in the phenological description and quantification for the area of Concordia. The aim of this study was to quantify the degree-day accumulation from flowering to harvest for different oranges and mandarins varieties. The study was conducted during four consecutive growing seasons (2005/06 to 2008/09), and the phenological stages were registered every 2 weeks in Newhall, Lane Late, Valencia Late, and Salustiana oranges; Satsuma Okitsu and Clemenules mandarins, and Ellendale and Nova hybrids, all grafted on trifoliate orange rootstock. Degree days (DD) were calculated over a base temperature of 12.5 ∼C. The beginning of flowering changed significantly with the year (P = 0.0002) being earlier during the 2006/07 growing cycle and later during the year 2007/08. There were also significant differences in the DD accumulation between cultivars (P = 0.0001) and year (P = 0.0029). The earliest maturing Satsuma Okitsu and Clemenules mandarins reached 2,029.37 and 2,112.35 ㊣ 57 DD accumulation, respectively, whereas Valencia Late orange had the highest value (2,526.35 ㊣ 57) DD accumulation.------------------------------------------------------------------------------------------------------------ La provincia de Entre R赤os se caracteriza por su producci車n de naranjas y mandarinas, sin embargo existen pocos datos que indiquen los momentos y duraci車n de las etapas fenol車gicas para el cultivo de los c赤tricos. El objetivo de este trabajo fue cuantificar los grados d赤as desde floraci車n a cosecha de variedades comerciales de naranjas y mandarinas en la zona de Concordia, Entre R赤os. Se registraron quincenalmente los estadios de la floraci車n en variedades de naranja Newhall, Lane Late, Valencia Late y Salustiana (Citrus sinensis (L.) Osbeck), mandarina Satsuma Okitsu (C. unshiu Marc.), Clemenules (C. clementina Hort. ex Tan) y los h赤bridos Ellendale (C. sinensis L. Osbeck ℅ C. reticulata Blanco) y Nova [C. clementina Hort. ex Tan, x (C. paradisi Macf. x C. tangerina Hort. ex Tan)] sobre pie trifolio (Poncirus trifoliata L. Raf.) durante cuatro campa as (2005/06 a 2009/10). Se calcul車 los grados d赤as (GD) con temperatura base de 12,5 ∼C desde plena floraci車n a cosecha. La fecha de inicio de floraci車n fue variable de acuerdo al a o (P = 0,0002) siendo m芍s temprana durante 2006/07 y m芍s tard赤a en 2007/08. Se encontraron diferencias en los GD acumulados por variedad (P = 0,0001) y a o (P = 0,0029). Las mandarinas de maduraci車n temprana Satsuma Okitsu y Clemenules fueron l
%K Phenology
%K Citrus sinensis
%K Citrus reticulata
%K Citrus unshiu / Palabras claves: Fenolog赤a
%K Floraci車n
%K Citrus sinensis
%K Citrus reticulata
%K Citrus unshiu
%U http://www.horticulturaar.com.ar/publicaciones-17.htm