Efficacy and insecticidal properties of some essential oils against Caryedon serratus (Oliver)—a storage pest of groundnut

Abstract

During storage groundnut is attacked by number of stored grain pest and management of these insect pests particularly bruchid beetle, Caryedon serratus (Oliver) is of prime importance as they directly damage the pod and kernels. Hence, some essential oils were tested for their insecticidal and fungicidal properties. Highest total bruchid mortality was recorded with the application of neem oil and pongamia oil at 10% (v/w) concentration and lowest in eucalyptus oil at 5% (v/w). Number of eggs laid was recorded 2.3 in neem oil 10% (v/w) which was lowest and significantly superior over untreated control and was at par with castor oil 10% (v/w) which recorded 2.5 eggs per 100 g of groundnut pods. There was no adult emergence in the groundnut pods treated with castor oil, eucalyptus oil, neem oil and pongamia oil at 10% (v/w) concentration. Groundnut pods treated with castor oil, eucalyptus oil, neem oil and pongamia oil at 10% (v/w) and neem oil at 5% (v/w) concentrations recorded no damage to pods and kernels and also zero per cent weight loss. These oils effectively influenced groundnut bruchid establishment and reduce damage besides reduction in aflatoxin contamination.

Efficacy of Different Botanicals against <i>Caryedon serratus</i> (Oliver) in Stored Groundnut

“…Neem leaf powder and lantana leaf powder observations were similar with Tripathy et al, (2004), Egwurube et al, (2010), Aguoru et al, (2015), Sagarka et al, (2017). The present results were also similar with Harish et al, (2014) and Pravasini et al, (2016).…”

“…Egwurube et al ( 2010) obtained 100% mortality with neem seed powder. Also, results are similar with the findings of Patta (2003), Harish et al, (2014), Pravasini et al, (2016) and Kumar et al, (2017), Sharma et al, (2017), Belay et al, (2017), Sreedhar et al, (2020).…”

Purdue Improved Crop Storage (PICS) bags for safe storage of groundnuts

“…Evaluation of triple-layer bags in minimizing bruchid damage of pods and aflatoxin contamination in groundnut after four months of storage. It has been speculated that bruchids play a role in enhancing infection by aflatoxigenic molds (Harish et al, 2012). In our studies, bruchid damage of pods was less in triple layer bags (21.3%) compared to cloth bags (92.7%) under artificial inoculation with A. flavus and with bruchid supplementation.…”

<i>In silico</i> screening of phytochemicals against Ypd1 protein of a destructive storage fungi, <i>Aspergillus</i>

“…It is a potent carcinogenic, mutagenic, and immunosuppressive agent (Zain, 2011), produced as secondary metabolites by the fungi, Aspergillus flavus, A. parasiticus and A. nomius on a variety of food commodities (Essono et al, 2009). Infection of A. flavus and subsequent aflatoxin contamination in groundnut can occur at preharvest, harvest, and post-harvest storage and processing (Harish et al, 2014). Due to the production of mycotoxins storage, the seeds become unfit for human consumption and there is a reduction in their market value (Muller, 1991).…”