TY - JOUR
AU - Martínez Jaime, Oscar Alejandro
AU - Salas Araiza, Manuel Darío
AU - Díaz García, José Antonio
PY - 2018/05/01
Y2 - 2024/11/07
TI - Population growth curve of Spodoptera frugiperda in maize in Irapuato, Guanajuato, Mexico
JF - Agronomía Mesoamericana
JA - Agron. Mesoam.
VL - 29
IS - 2
SE - Articles
DO - 10.15517/ma.v29i2.27126
UR - https://revistas.ucr.ac.cr/index.php/agromeso/article/view/27126
SP - 315-323
AB - <p>The fall armyworm <em>Spodoptera frugiperda </em>Smith (Lepidoptera: Noctuidae) is an important pest of maize (<em>Zea mays </em>L.) in Irapuato, Guanajuato, Mexico. The objective of the study was to obtain the population growth curve (and its estimation) of the adults of <em>S. frugiperda </em>in the maize crop in Irapuato, Guanajuato, Mexico. Applying the multiple regression technique, the functional form of a third-degree polynomial was obtained, in terms of temperature and precipitation, using the monthly averages available from 1993 to 2002. The estimated equation was: Y = 821.347 – 104.728T + 2.737P + 3.448T2 – 0.019P2 – 0.180TP + 0.001TP2 (1), where T was the average monthly mean temperature, P was the average monthly accumulated precipitation, and Y was the average of adults of <em>S. frugiperda </em>per month. In addition, using standard mathematical programming techniques, the critical temperature and the critical precipitation were calculated (T=13.70 °C, P=38.70 mm) obtaining the average of maximum number of individuals of this specie per month, which was 39 adults. The prediction model (1) provided information to reach deep understanding of the fluctuation of this species population, and contributed, therefore, to make the integrated pest management in maize crop more efficient, in the region of “El Bajío” of Guanajuato.</p>
ER -