Efficacy of Different Bio-Pesticides against Major Sucking Pests on Brinjal under Field Conditions

Abstract

A field study was carried out during 2015 at the experimental area of Entomology Section, Agriculture Research Institute, (ARI) Tando Jam to examine the efficacy of different bio-pesticides against major sucking pests on brinjal under field conditions. Four treatments with three replications were applied. The treatments were: T1=Neem (Azadirachta indica), T2= Tobacco (Nicotiana tabacum), T3= Datura (Datura stramonium) and T4=Control (untreated). Three insect pests were found infesting brinjal including white flies, jassid and mites. Pre-treatment and post-treatment observations were recorded.The results revealed that against white fly, the first spray of Neem extract showed highest reduction percent (82.60%) followed by Tobacco extract (75.95%), Datura extract (73.93%), and lowest for untreated control (11.07%); while in the second spray also Neem extract showed highest effect against white fly (67.53%); followed by Tobacco extract (56.43%), Datura extract (42.25%), and least by untreated plot (5.49%). Against jassid, Neem extract showed highest effect (55.95%) as observed during 1st spray, followed by Tobacco extract (53.38%), Datura o extract (63.11%)and untreated control (8.00%), while after second spray also Neem extract showed highest reduction percent (68.73%) followed by Tobacco extract (55.72%), Datura extract (50.66%) and the lowest was resulted by untreated control (13.90%). Against mites population on brinjal the first spray results showed that Neem extract showed highest effect (96.19%) followed by Tobacco extract (95.75%), Datura extract (86.86%) and least population was recorded in untreated control (9.96%). After second spray, Neem extract showed highest reduction percent (98.33%), followed by Tobacco extract (92.85%), Datura extract (88.93%) and the lowest reduction percent was resulted by untreated control (9.14%)respectively. Neem extract showed its superiority in effect to combat sucking insect pests studied in brinjal, followed by, Tobacco extract, Datura extract and untreated control remained the least.

Efficiency of botanical pesticides against some pests infesting hydroponic cucumber, cultivated under greenhouse conditions

“…Similarly, numerous other neem-based products showed effectiveness of Myzus persicae on several host plants (Akbar et al 2010). The neem extract was extremely effective to control jassid, whitefly, aphid, and mites on brinjal (Ali et al 2017).…”

Efficacy of Eco-Friendly Bio-Pesticides against the Whitefly Bemisia tabaci (Gennadius) for Sustainable Eggplant Cultivation in Kebbi State, Nigeria

“…The higher effect may be due to the application of concentrated bioactive compounds, the experimental setting, and the crop involved. Similarly, Ali et al [46] proved that neem extract was potent against whiteflies, reporting up to 82.60% reduction in the whitefly population in brinjal at 50% w/v two weeks after application. This was higher than our findings, with 58.1% reduction at 10% w/v two weeks after the first spray, and the higher effect could be due to the higher concentration applied in their studies.…”

Eco-Friendly Plant Based on Botanical Pesticides

“…The mixture of acetone extract of crown flower and ethanolic extract of neem seed in the ratio 3:1 shows higher insecticidal effect against spiraling white fly compared to other combinations formulated in their study (Alim et al, 2017). Ali et al (2017) reported neem seed extract is the most effective insecticide against sucking insect pests, compared to other plant extracts used in their research work.…”