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Revista mexicana de ciencias agrícolas

versão impressa ISSN 2007-0934

Resumo

RODRIGUEZ MORALES, José Nery et al. Drought and drought *borer interaction in sugarcane during the vegetative stage. Rev. Mex. Cienc. Agríc [online]. 2015, vol.6, n.5, pp.1013-1022. ISSN 2007-0934.

Drought impacts negatively growth and crop yield; the degree of damage depends on its intensity, genotype and the interaction between these. 62% of sugarcane (Saccharum spp.) in Mexico is grown under rainfed. To know some of the effects of drought in this crop, an experiment was established in the field in Tlaquiltenango, Morelos, Mexico in 2011. Ten varieties were tested, in the drought treatment: irrigated (S0) during the Great Winter Drought (GSI) which covered the end of October 2011 to mid-May 2012; without irrigation from March to mid-May 2012 (S1); without irrigation from late November 2011 to the end of the GSI (S2). Were quantified: number of shoots and live strains; plant height; length, diameter and number of grinding stems; number and length of internodes in these. The drought reduced the number of strains and live shoots in 29 and 21%, respectively, due to the attack of Diatraea sp., which became more severe as drought intensified. The recovery of plants was different between treatments, since the height of the plant reduced 15 and 26% for S1 and S2 regarding to S0, respectively. The length of grinding stems was reduced on average for S1 and S2, 34%, associated to reductions in the number and length of internodes. The number and diameter of grinding stems were also reduced by drought.

Palavras-chave : Diatraea sp.; Saccharum spp.; great winter drought; yield components.

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