Developmental effect of cashew nut shell extract against nymphal instar of Silver leaf Whitefly (Bemisia tabaci Genn.)

2nd International Conference on Natural Resources and Life Sciences

生态环境科学

Andayanie, W.R.^1 ; Ermawati, N.^2

Agriculture Faculty, Merdeka Madiun University, Jl. Serayu 79, Madiun, East Java

63133, Indonesia^1

State Polytechnic of Jember, Jl. Mastrip, Jember, East Java

68120, Indonesia^2

关键词: Botanical pesticides;    Cashew nut shells;    Different stages;    Lethal concentration;    Mortality rate;    nymphs;    phytotoxicity;    Silverleaf whiteflies;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/293/1/012039/pdf
DOI  :  10.1088/1755-1315/293/1/012039

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Cashew nut shell (CNS), which are one of the most still is tropical biomass waste. This study was aimed to test mortality rates of CNS extract against the first to third instar nymphs of Silverleaf Whitefly (Bemisia tabaci Genn.1889). The concentration of CNS extract were: 0.22 %, 0.67 %, 2.00 %, 6.00 %. The LC50 and LC90 values indicated that CNS extract at concentration of 2.00 % were the most toxic compound to the first instar stage followed by CNS extract at concentration of 6.00 %, 0.67 %, imidacloprit, and CNS at concentration of 0.22 %, respectively. The concentration of 6.00 % showed the most toxic effect to the second stage followed by CNS extract at concentration of 2.00 %, 0.67 %, imidacloprit, and CNS at concentration of 0.22 %, respectively. The lethal concentration (LC50-90) value of the CNS extract at concentration of 6.00 %, at concentration of 2.00 %, 0.67 %, imidacloprit, CNS extract at concentration of showed the toxicity against the third instar nymph. This CNS extract at concentration of 2.00 % could be used to suppress of the B. tabaci nymphs of different stages (first to third instar) and negative effect of phytotoxicity on the soybean leaves.