CE:7815 CF: cag104162102
ARTÍCULO DE INVESTIGACIÓN
Relationship between the thermal time accumulated during the long period of growth in agricultural yields of sugarcane
Relación entre el tiempo térmico acumulado durante el gran periodo de crecimiento con los rendimientos agrícolas de la caña de azúcar
Maira Ferrer Reyes, Reinaldo Roque Rodés, Carlos Lamelas Felipe y Alberto González Marrero
Instituto Nacional de Investigaciones de la Caña de Azúcar (INICA), Carretera a la CUJAE km 11⁄2, Rancho Boyeros, La Habana, Cuba. CP 19390.
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ABSTRACT
The work was carried out at the station for irrigation and drainage of sugarcane, Havana province. The time heat in the great period of growth was determined in eight stools grow Ja 60-5, under irrigation and rain fed conditions. The thermal time accumulated during the great period of growth, plants and sprouts was superior to that obtained under rain fed conditions and tended to decrease as the great period started later to the month of may, similarly behaved the agricultural yield. Greater heat time was obtained by the plant "noviembre.81" and their respective offspring under irrigation conditions, with 1314,3 and 117,35 ºC day, respectively. The yields of these plantations were: 166 and to117.5 tha-1 the tendency found between the thermal time and agricultural yields, with the date of commencement of the great period of growth was adjusted to a logarithmic type model.
