The period between flowering\u00a0and harvest in the sweet cherry (Prunus avium L.) is shorter than most fruit trees; thus, competition\u00a0for assimilate and nutrients occurs early in the season. To properly supply water and nutrients during\u00a0this critical period, optimal growth and root development are necessary. To characterize the root\u00a0growth pattern of cherry trees in relation to shoot growth and phenology, a study was conducted on\u00a0a \u2018Bing\u2019 cherry orchard on Gisela 6 rootstock at fourth leaf, located in central Chile (34\u00ba70\u2019 S, 70\u00ba43\u2019\u00a0W). During the 2009-2010 season, the shoot length and fruit diameter were measured on eight trees,\u00a0and the root length was quantified by installing rhizotrons on two trees. Additionally, a two-tone\u00a0(black\/white) plastic cover was placed in the row over one tree with a rhizotron to analyze the effects\u00a0of the plastic cover on soil temperature and root growth. The results showed three peaks of root\u00a0growth during the season. The first peak occurred 43 days after full bloom (DAFB), corresponding\u00a0to the phenological stages of the fruit turning from green to straw color. This peak occurred at 326\u00a0accumulated degree days (ADD) in the soil and 212 ADD in the air. The second peak was observed\u00a0after harvest at 97 DAFB, when the shoot growth had stopped, and the soil and air had accumulated\u00a0932 and 692 degree days, respectively. The third and last peak occurred at 167 DAFB, with 1887\u00a0ADD in the soil and 1361 ADD in the air. The plastic cover increased the average soil temperature by\u00a0approximately 1 \u00b0C, thereby increasing the ADD by 105.2 units during the study period. However,\u00a0this increase was not enough to affect the root growth pattern.\u00a0El periodo entre floraci\u00f3n y cosecha en cerezo dulce (Prunus avium L.) es m\u00e1s corto que en\u00a0la mayor\u00eda de los frutales, por lo que la competencia por fotoasimilados y nutrientes ocurre \u00a0temprano en la estaci\u00f3n. Para asegurar un suministro adecuado de agua y nutrientes durante\u00a0este per\u00edodo cr\u00edtico, se requiere un crecimiento y desarrollo radical \u00f3ptimos. Para caracterizar\u00a0el patr\u00f3n de crecimiento radical en \u00e1rboles de cerezo en relaci\u00f3n al crecimiento y fenolog\u00eda de\u00a0su parte a\u00e9rea, se realiz\u00f3 un estudio en un huerto de cerezo \u2018Bing\u2019 sobre el portainjerto Gisela\u00a06 en su cuarta hoja, ubicado en Chile central (34\u00ba70\u2019 S, 70\u00ba43\u2019 O). Durante la estaci\u00f3n 2009-\u00a02010, se midi\u00f3 el largo de brotes y di\u00e1metro de frutos en ocho \u00e1rboles, y se cuantific\u00f3 el largo de\u00a0ra\u00edces blancas a trav\u00e9s de la instalaci\u00f3n de rizotrones en dos \u00e1rboles. Adicionalmente, se instal\u00f3\u00a0una cubierta pl\u00e1stica de dos tonos (negro\/blanco) sobre la hilera en un \u00e1rbol con un rizotr\u00f3n\u00a0para analizar su efecto sobre la temperatura de suelo y el crecimiento radical. Se observaron\u00a0tres picos de crecimiento radical durante la estaci\u00f3n. El primero ocurri\u00f3 43 d\u00edas despu\u00e9s de\u00a0plena flor (DDPF), correspondiendo al estado fenol\u00f3gico de cambio de color del fruto desde\u00a0paja a coloreado. Este pico ocurri\u00f3 con 326 d\u00edas grados acumulados (DGA) en el suelo y con\u00a0212 DGA en el aire. El segundo pico se observ\u00f3 despu\u00e9s de la cosecha (97 DDPF), cuando el\u00a0crecimiento de brotes se hab\u00eda detenido y se hab\u00edan acumulado 932 y 692 d\u00edas grados en el\u00a0suelo y aire, respectivamente. El tercer y \u00faltimo pico se produjo 167 DDPF, con 1887 DGA\u00a0en el suelo y 1361 DGA en el aire. La cubierta pl\u00e1stica aument\u00f3 la temperatura promedio del\u00a0suelo en aproximadamente 1\u00b0C, aumentando los DGA en 105,2 unidades durante el per\u00edodo\u00a0estudiado. Sin embargo, esto no fue suficiente para modificar el patr\u00f3n de crecimiento radical.<\/p>","protected":false},"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","format":"standard","class_list":["post-611976","tnc_col_611521_item","type-tnc_col_611521_item","status-publish","format-standard","hentry"],"acf":[],"yoast_head":"\n