Banca de DEFESA: EDSON BRUNO MARTINS DA SILVA

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : EDSON BRUNO MARTINS DA SILVA
DATE: 31/08/2021
TIME: 16:00
LOCAL: meet.google.com/jva-swkx-map
TITLE:

POPULATION DYNAMICS AND RESISTANCE OF SOYBEAN CULTIVARS TO THE FALSE-MEDICATOR CATERPILLAR Chrysodeixis includens (WALKER, 1858) (LEPIDOPTERA: NOCTUIDAE), IN SOUTHEAST PARAENSE.

KEY WORDS:

Geostatistics, Glicine max., Integrated Pest Management (IPM), Insect Resistance of Plants, Bt Technology.

PAGES: 102
BIG AREA: Ciências Agrárias
AREA: Agronomia
SUMMARY:

Soybean (Glycine max (L) Merrill) is a legume of great worldwide interest, being used for human or animal food and part of the biodiesel industry. The complex of insect-pests related to the soybean crop presents itself as an obstacle to the development of the crop. Among the pest insects that most concern soybean producers in the state, is the soybean looper Chrysodeixis includens (LEPIDOPTERA: NOCTUIDAE), which deserves to be highlighted given its difficulty to control and lack of basic knowledge for the implementation of an adequate management. Thus, the main objectives of this work aim to (i) evaluate the population dynamics of C. includens with the help of Geostatistics, and (ii) the resistance of soybean cultivars in the State of Pará. The experimental area is located in the municipality of Paragominas where tests were carried out. of field. The population dynamics of C. includens was evaluated in three consecutive crops (2015/2016 and 2016/2017), correlating the influence of abiotic factors and their spatiotemporal distribution with the use of Geostatistics. For this purpose, weekly samplings were carried out with the use of a batting cloth, and the resistance of soybean cultivars was also evaluated. Field tests were carried out with 20 planted cultivars, among conventional and transgenic (Bt and RR technology). According to the data obtained, it can be concluded that the greatest infestation of the soybean looper occurred during the vegetative period of the culture. Through semivariograms, it was observed that the models that best fit the spatial distribution of the false-measurer caterpillar were: pure nugget, spherical and exponential effect. With range values for an experimental area ranging from 1,80 to 7,30 meters, with formation of aggregation areas for plants with infestation of the false-medium caterpillar. The georeferenced monitoring was an efficient strategy for the characterization of the spatiotemporal variability of the false-measurer caterpillar, constituting an important tool to support the MIP, defining the management in specific characters and consequent reduction in environmental impacts in the soybean crop. The cultivar containing the Bt toxins (M8210 IPRO) was the least preferred by soybean looper; the Round Up tolerant cultivar (P98Y52 RR) showed an intermediate preference between the most and least preferred; cultivars M8867RR and AN sc 89109 RR, showed resistance to small and large soybean looper; the cultivars containing the Bt toxins (IPRO) showed, even so, attack by C. includens; cultivar BRS 9090RR was the most preferred due to the attack of C. includens.

BANKING MEMBERS:
Presidente - 2935509 - ANDERSON GONCALVES DA SILVA
Externo ao Programa - 1099659 - FABIO JUNIOR DE OLIVEIRA
Externo à Instituição - RONI DE AZEVEDO - EMBRAPA
Externo à Instituição - RUY GUILHERME CORREIA - SEDUC/PA