DALLACORT, Rivanildo; FREITAS, Paulo Sérgio Lourenço de.; GONÇALVES, Antonio Carlos Andrade.; FARIA, Rogério Teixeira de.; GAVA, Ricardo.
Abstract:
This study was carried out at the region of Palotina, state of Paraná (latitude of
24º17’S, longitude of 53º50’30” and altitude of 333 meters), where the growth and
development of the soy crop simulation model was used (Glycine Max (L) Merrill),
CROPGRO-SOYBEAN, which was calibrated to the soy crops CD 202, CD 204, CD 206 and
CD 210, cultivated in the region of Palotina, state of Paraná. After the calibration, the
simulation of the soy productivity for two different sowing dates and in twenty-five harvest
period, from 1974 to 1999, was carried out. From the two dates of simulated sowing, the one
that presented the highest productivities was October 1st, but in this date we also found the
lowest productivity. The analysis of the probability of incomes demonstrates to be a great tool
in the aid the socket of decision as for the time of sowing of the culture of the soybean.
