The 2009 field trials in Yanqing and Zhangjiakou showed that the number of male moths caught in pheromone traps was greatly reduced in MD dispenser‐treated and conventional‐practice fields (Fig. Sweet corn is produced on ca. stream To demonstrate the significance of conserved biological control in commercial production, a decision-making guide was developed that evaluates control options for European corn borer, Ostrinia nubilalis (Hübner) (Lepidoptera: Crambidae), in sweet corn, Zea mays L., where the primary natural enemies are generalist predators. In addition to fresh-market production, both crops provide added economic diversification to traditional field corn and soybean producers in the Midwest and eastern US via contracts with the processing industry. similar (i.e., 33 and 25%, respectively). Because of the demonstrated success of the technique in this study, both farmers now plan to utilize MD technique in selected areas of their cabbage fields in subsequent years. Spodoptera frugiperda (J E Smith) (fall armyworm) (Lepidoptera: Noctuidae), is a key pest of maize that has recently entered in India causing damage and yield loss. 1). During our experiments, low levels of other cabbage pests, such as aphids, leaf miners and thrips, were observed but did not require control. As growers switch to transgenic crops and selective insecticides that are less toxic to natural enemies, natural enemies can become more important in agricultural pest management. A refined approach to making pest management decisions is to include the impact of natural enemies and insecticides, thereby better integrating biological and chemical control. How-ever, O. nubilalis damage appeared to be suppressed in T. ostriniae release plots, although no significant differences were found in most. 1. The concept of integrated pest management (IPM) seeks to minimize the disadvantages associated with the use of insecticides, while maximizing the advantages (Metcalf, 1980). Certain moths are classified as pest borers due to their larval activity. We also evaluated the effectiveness of 3 registered insecticide products with different active ingredients (methomyl, chlorantraniliprole, and lambda-cyhalothrin), under various timing scenarios. The maximum number of larvae was 16 and 12 larvae per 10 plants, respectively. © 2001 Elsevier Science. In 1982, the seasonal average of tip and boring injury was 6.43 and 1.11%, respectively, and in 1983, 6.94 and 1.51%, respectively. A recent survey indicated that one of the most successful new environmentally safe strategies used for insect control was MD which could reduce pesticide use in low to moderate pest infestations (Reddy & Guerrero, 2010). The total, national on-farm value is estimated at US$ 800 million (Pike 2003). Boring injury only reflected the temporal trend of European corn borer in 1983. Bt sweet corn and spinosad were able to provide control of the lepidopteran pests better than or equal to lambda cyhalothrin. 1968, and 1970, in which chemical sprays were applied at various times, indicated this hypothesis to be true. Studies were conducted in commercial sweet corn fields in upstate New York to collect information for developing a sampling protocol for egg masses and larvae of European corn borer (ECB), Ostrinia nubilalis (Hübner). endstream 3A, 4A). Treatments involved three applications of each insecticide for controlling naturally intesting Lepidoptera. 3 0 obj The two test sites used in 2009 were in Yanqing County and Zhangjiakou (41.15°N, 114.7°E), Hebei Province. The Yanqing trial was conducted from May 10 to July 1. The mean number of larvae on plants in dispenser‐treated fields was always lower than that in the conventional‐practice field. (2006a, 2006b), using the number of pupae on plants on the y‐axis instead of the male catch. Observed densities ranged from 0.01 to 4.40 larvae per ear for O. nubilalis, 0.005-1.62 larvae per ear for H. zea, and 0.004-36.12 damaged kernels per ear. Successful mating disruption techniques have been utilized in insect control, most notably in orchards and plantations (Yamanaka, 2007; Hegazi et al., 2010; Epstein et al., 2011).


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