Resumo

FERRER REYES, Maira; ROQUE RODES, Reinaldo; LAMELAS FELIPE, Carlos  e  GONZALEZ MARRERO, Alberto. The Relationship between the thermal time accumulated during the long period of growth in agricultural yields of sugarcane. Ctro. Agr. [online]. 2016, vol.43, n.4, pp. 73-78. ISSN 0253-5785.

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 ⁰C day, respectively. The yields of these plantations were: 166 and to 117.5 t ha^-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.

Palavras-chave : thermal time; great period; yields; sugar cane.

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