Abstract Background Entomopathogenic nematodes (EPNs) have the potential to supersede larvicidal activity for management of various insect pests. Result Lab experiments were conducted test pathogenicity 2 EPNs local species; Steinernema feltiae and Heterorhabditis bacteriophora at different (IJs/cm ) concentrations against cabbage butterfly, Pieris brassicae (L.). The native isolate was obtaine...

The larvae of insect herbivores feed on plants that may vary nutritionally (qualitatively and/or quantitatively) over the course development. Plant quality change in response to interactions with biotic environment turn affect development and biomass insects feeding these plants. However, many gregariously comparatively small limited also experience variation quantity plant food available. Pier...

Rapeseed (Brassica napus L. ssp. oleifera Metzg) is attacked by a wide range of pests. Breeding resistant cultivars one the best methods protecting crops against insects, and non-cultivated species Brassicaceae can be used as resistance donors. In this study, we investigated relationship between nutrient content to two commonly occurring pests (Delia radicum Brevicoryne brassicae) in 12 hybrid ...

biological characteristics of chrysoperla carnea (stephen.) fed on hyalopterus pruni (goff), brevicoryne brassicae (l.) and aphis pomi (degeer) were studied under laboratory conditions. developmental time of c.carnea on the above mentioned aphids were 24.75, 25.77 and 30.75 days, respectively. preimeainal mortality was 60.69, 43.75 and 63.1%, respectively. female longevity of c.carnea was equal...

Raphanus sativus, an important cruciferous vegetable, has been increasingly affected by clubroot disease. Establishing a stable and accurate resistance identification method for screening resistant germplasms is urgently needed in radish. In this study, the influence of inoculum concentration, inoculation methods, pH substrate on disease occurrence was studied. The result showed that index (DI)...

In continuation of our program aimed at the development of natural product-based pesticidal agents, three series of novel camptothecin derivatives were designed, synthesized, and evaluated for their biological activities against T. Cinnabarinus, B. brassicae, and B. xylophilus. All of the derivatives showed good-to-excellent activity against three insect species tested, with LC50 values ranging...

The genome of the rhizobacterium Bacillus subtilis XF-1 is 4.06 Mb in size and harbors 3,853 coding sequences (CDS). Giant gene clusters were dedicated to the nonribosomal synthesis of antimicrobial lipopeptides and polyketides. Remarkably, XF-1 possesses a gene cluster involved in the synthesis of chitosanase that is related to the suppression of the pathogen Plasmodiophora brassicae.