The Effects of Biopesticide and Fusarium oxysporum f.sp. vanillae on the Nutrient Content of Binucleate Rhizoctonia-Induced Vanilla Plant

Abstract

Binucleate Rhizoctonia (BNR) fungi are essential for the germination of vanilla seeds. Chemical control of the soil-borne pathogen might adversely affect BNR. The purpose of this study is to determine the effect of Nicotiana tabacum extract biopesticides and Fusarium oxysporum f.sp. vanillae (Fusarium) on vanilla plant nutrient content induced by BNR. Materials and Methods. The research design was completely randomized design with two factors and three replications. The first factor was biopesticide (dosage of 0, 10, 20, and 30 ml/seedling), and the second factor was the application of Fusarium. Results. The increase in the nitrogen, phosphorus, and potassium content of vanilla was affected by biopesticides and Fusarium inoculation. Fusarium inoculation has no significant effect on nitrogen and phosphorus levels but significantly affects potassium levels. The biopesticide dosage is significant for nitrogen, phosphorus, and potassium. The interaction of biopesticides with Fusarium inoculation did not significantly affect the parameters of nitrogen and phosphorus content, but significantly affected potassium content. Conclusion. The application of biopesticides and Fusarium inoculation after induction of BNR can increase nitrogen, phosphorus, and potassium content of vanilla plants.

The effect of tobacco leaf extract dosage on the development of virus disease in curly chili

“…The increase in these compounds contributes to plant growth (Jassbi et al, 2017;Zou et al, 2021). Additionally, tobacco extract increases the NPK element in plant tissues, thereby enhancing the resistance and health of vanilla (Haryuni et al, 2020). The results of this research revealed that tobacco extract can be used to control the spread of Bemissia and Thrips, thereby reducing plant virus infection.…”

The effect of tobacco leaf biopesticides on the development of bacterial leaf blight of rice

“…the concentration of tobacco leaf biopesticide affects the number of grains per plant, info for help [17] tobacco leaf biopesticide contains 33.08% nicotine. Nicotine is produced from tobacco roots as a secondary metabolite which is excreted through root exudation in the rhizosphere area thereby increasing the uptake of nitrogen, phosphorus, potassium [19] zinc, and iron [20]. In addition to the levels of these elements, tobacco plants also produce gibberellin hormones found in rice plants.…”

“…Tobacco leaf biopesticide has antimicrobial activity as an antibacterial [20,27] antifungal [20,25]. The highest biopesticide content in tobacco leaves is nicotine and several N-containing compounds or groups such as 3-(1-methyl-2-pyrrolidinyl)-pyridine which play a role in increasing nutrient absorption in vanilla [19] and corn plants [20]. Nitrogen for plants is an important component of protein, chlorophyll and genetic material so that it has a direct effect on growth, reproduction and inhibits the formation of pathogenic chitin Fusarium oxysporum f.sp vanilla [20].…”

Evaluation of Tulasnella and Ceratobasidium as Biocontrol Agents of Fusarium Wilt on Vanilla planifolia

“…However, these agrochemicals represent a risk to human health [13,14]. Moreover, in the vanilla crop, chemical fungicides can generate problems in plant nutrition and seed germination due to the harmful effect on orchid mycorrhizal fungi (OMF) and other beneficial microorganisms in the rhizosphere [15,16]. Orchid mycosymbionts are often found in a paraphyletic group, encompassing different clades within the phylum Basidiomycota, called form genus Rhizoctonia or "rhizoctonias" [17,18].…”