Effects of Synthetic Insecticides and Crude Botanicals Extracts on Cabbage aphid, Brevicoryne brassicae (L.) (Hemiptera: Aphididae) on Cabbage

Abstract

The study was conducted to evaluate the insecticidal action of two new chemical insecticides and three locally available botanicals. These materials were evaluated for their efficacy against cabbage aphids, Brevicoryne brassicae (L.), under laboratory and field conditions. The laboratory result revealed that Lambda Cyhalothrin (Triger 5 E.C TM ) and Emamectin benzoate (Cutter 112 E.C TM ) were non-significant difference from the standard check within 1 day after application. The field results showed between the new insecticides, Triger 5 E.C TM and Cutter 112 E.C TM were non-significant difference from that of the standard check (Diazinon 60% E.C TM ) at both locations (Guder and Mutulu) within three days after application. Extracts of neem (Azadirachta indica) seed, Hop bush (Dodonae angustifolia) fresh leaf and Lemon grass (Cymbopogon citrates) gave positive performance under laboratory while the efficacy percent were decline at both field locations on field. Azadirachta indica seed, Dodonae angustifolia and Cymbopogon citrates were given 59.48, 57.16 and 52.50 at Mutulu and 53.92, 37.26 and 62.72 at Guder location mortality percent, respectively, after 3 rd day observation in first spray. The obtained results revealed that all tested materials were exhibited mortality rate action against cabbage aphids. Powdered neem seed, Dodonae angustifolia fresh leaf and leaves of Cymbopogon citrates caused moderately mortality percent against cabbage aphid within 3 days after applications. Higher damage and low yield were observed in control and botanicals application. This study indicated that the two insecticides Cutter 112 E.C TM and Triger 5 E.C TM and botanicals could be recommended as an alternative management option of Brevicoryne brassicae (L.) in Ethiopia.Citation: Shiberu T, Negeri M (2016) Effects of Synthetic Insecticides and Crude Botanicals Extracts on Cabbage aphid, Brevicoryne brassicae (L.) (Hemiptera: Aphididae) on Cabbage. J Fertil Pestic 7: 162.

Efficacy of lantana (Lantana camara) extract application against aphids (Brevicoryne brassicae) in rape (Brassica napus) over varied periods of time

“…Synthetic chemical insecticides have been used for many years in the control of aphids and are currently available (Shiberu and Negeri, 2016). Nevertheless, use of synthetic chemicals promotes development of pesticide resistance in the target pests (Belmain et al, 2013), pest resurgence and emergence of secondary pests.…”

“…Nevertheless, use of synthetic chemicals promotes development of pesticide resistance in the target pests (Belmain et al, 2013), pest resurgence and emergence of secondary pests. Synthetic pesticides affect non-target insect species (Shiberu and Negeri, 2016), cause food and groundwater contaminations, pollution and pesticide residue, which accumulate in beneficial organisms and human beings (Georghiou, 2000). They have high costs and associated toxicity risks which discourage rape growers from integrating them in their pest management system (Canhilal et al, 2006).…”

Evaluation of selected botanical aqueous extracts against cabbage aphid (Brevicoryne brassicae L. (Hemiptera: Aphididae) on cabbage (Brassicae oleraceae L.) under field condition in Kobo District, North Wollo, Ethiopia

“…The total numbers of cabbage aphids were counted with the help of a hand lens a day before each treatment application. Mean number of cabbage aphids per plant (efficacy of treatments) were calculated (Shiberu and Mulugeta, 2016).…”

In-field screening for host plant resistance to Delia radicum and Brevicoryne brassicae within selected rapeseed cultivars and new interspecific hybrids

“…Among them, two economically important insects can be distinguished – cabbage root fly ( Delia radicum L.) (Diptera: Anthomyiidae) and cabbage aphid ( Brevicoryne brassicae L.) (Homoptera: Aphididae). The cabbage aphid is one of the most important and commonly occurring insect pests of rapeseed worldwide [ 7 ]. Brevicoryne brassicae causes significant yield losses in many crops in the family Brassicaceae , including mustards and crucifers.…”