U.S. Department of Agriculture: Agricultural Research Service, Lincoln, Nebraska
Date of this Version
3-2017
Citation
ANNUAL REPORT OF THE BEAN IMPROVEMENT COOPERATIVE, No. 60, March 2017. Published by USDA.
Abstract
INTRODUCTION The species Heliothis virescens (Fabricius, 1781) (Lepidoptera: Noctuidae), is considered an important pest of various crops, including the common bean, Phaseolus vulgaris Linnaeus, in which it can feed from all plants structures (Moreira, 2009). For its management the most used tactic is chemical control, however, if used improperly can cause risks to the environment and human health.
A safer alternative is the utilization of resistant cultivars, which can reduce populations of pest insects below the levels of economic damage, production costs and risks of imbalances in the agro-ecosystem, beyond the possibility of harmonious use with other control tactics (Boiça Júnior et al., 2013). Therewith, the aim of this work it was evaluate the non-preference for feeding of first instar caterpillars of H. virescens by different bean genotypes.
MATERIAL AND MÉTHODS We conducted the experiment in UNESP/FCAV, in the Laboratório de Resistência de Plantas a Insetos, Jaboticabal, SP, Brazil, under controlled conditions of temperature (25 ± 1°C), relative humidity (60 ± 10%) and phtofase (12 hours). We used the completely randomized design, with 10 treatments composed by genotypes Pérola, Raz 49, BRS Supremo, IAC Carioca Tybatã, IAC Galante, IAC Diplomata, IAC Harmonia, IAPAR 81, IAC Una, IAC Carioca Eté, with ten replicate in free-choice and no-choice test.
Comments
U.S. government work.