Resumen

HERNANDEZ CORDOVA, Naivy; SOTO CARRENO, Francisco  y  PLANA LLERENA, Rodolfo. Growth performance and yield of wheat (Triticum aestivum L.) on three planting dates. cultrop [online]. 2015, vol.36, n.1, pp. 86-92. ISSN 1819-4087.

Wheat (Triticum aestivum L.) is considered the oldest agricultural species cultivated by man and is currently the most widely cultivated cereal in the world. Each passing day, matures on earth, at least this important cereal crop, demonstrating the ability to grow and produce in environments and soil conditions very dissimilar. The present study was to evaluate the influence of three planting dates on growth and yield of this crop. The same was developed at the National Institute of Agricultural Sciences, at 230 01’ N and 820 08’ W and 138 m s. n. m.; were studied three planting dates: November 2008, December 2009 and January 2010, using a seed rate of 100 kg ha-1 seed. Destructive samplings were performed every 7 days from emerged plants until harvest, total dry weight (TDW) of the aerial partand Leaf Area Index (LAI) were determined, adjusting the data to an exponential model of the second degree, coefficients of determination (R2) being between 0,90 and 0,99; where from regression equations calculated the absolute growth rate of dry mass of the aerial part (TAC), being a greater accumulation of dry matter in the sowing date January 2010 which was maintained throughout the cycle crop breeding. The dynamics of LAI and TDW showed a similar behavior of the dry mass, indicating that maximum values ??of these indicators and especially they are held for a longer period of time involving higher yields

Palabras clave : growth analysis; wheat; yield.

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