FIELD EVALUATION OF SOME COMPOUNDS AGENT FOR CONTROLLING OLIVE FRUIT FLY DACUS OLEAE  (GMELIN) (Diptera; Tephritidae) IN ALARISH, NORTH SENAI, EGYPT

A. Sh. Hassan; H.A. Nabil; A. M. Zaki  and W. M. H. Desuky

Plant Protection Research Institute, Dokki, Egypt.

ABSTRACT

In the present study two experimental trials were carried out to evaluate the efficacy of the food attractant (Buminal 800 ml / 20 L) mixture with Match EC 5% (IGR; 160 ml / 20 L) for controlling the olive fruit fly, Dacus oleae (Gmelin) on olive orchard at Alarish district, North Senai, Egypt during period from June to July 2006 and2007 by food attractant traps and partial spray for trees trunk. In 1^st experimental trial, results showed that the mean of reductions percentages by using Handerson and Telton (1955) formula for both periods 2006 and 2007 were 39.02 % & 50.00% & 55.81 % & 75.0 % & 80.77 % and 41.03% & 53.33% & & 70.20% & 78.70% & 82.35%, respectively, % mean of reductions during the same periods 2006 and 2007 were 60.2 % and 65.1 %, respectively. Regarding the second experiment, data showed that the total number of % reduction for both year 2006 and 2007 were 29.27 % & 45.65 % & 55.81 % & 70.83 % & 78.0 % and 33.33 % & 48.81 % & 63.83 % & 74.47% & 76.47%, respectively. The mean percentage of reduction for all these samples were 56.06 % in 2006 and 59.4 % in 2007. The statically analysis (L.S.D_0.05) showed that a positive highly significant correlation for traps attracting which values was 8.427^** and 7.956^** for both years 2006 and 2007, respectively.

Keywords:  Field evaluation, compounds agent, olive fruit fly dacus oleae, alarish.

INTRODUCTION

            The olive fruit fly, Dacus oleae (Gmelin) (Diptera; Tephritidae) is one of the most important pest infesting olive fruit in the mediteranean basin, Dacus oleae (Gmelin) causes considerably damage and significant economic losse in olive fruit (Andres 1979, Yayla 1983, Orphanides 1985, Michelakis 1990, Katsoyannos, 1992).

            During go’s of the last harmful pest, the olive fruit fly (Off), Dacus oleae (Gmelin) infesting different olive fruit species (Donia et al., 1972), Economopoulos and papadopoules 1983, used baited traps containing the hydrolyzed protein Buminal or the odour lure Entomozyl (of unstated composition) (each used at 2 % in a 1.5 % aqueous of borax). In Egypt, several trails were previously conducted to evaluate of different types of traps (Zaki, A, M, 1999).

            The present investigation was designed to evaluate the efficacy of attractant Buminal mixture with Match 5 %.

MATRIALS AND METHODS

            Thirty olive trees Olea europeal (pecual variety) for every experiment were selected. These trees were of similar in size, age and vegetation. The first experiment traps baited put in central olive tree, after dipping in solution containing of Match EC 5% at the rate of 160 m3 + Buminal 800 ml  20 litter of water.

The second experiment oriented spray (partial spray) of 30 olive trunk trees by the same solution.

            Ten olive trees selected also to control for all experiments without treatments.

            The experiments were carried out during five weekly inspections (15/ 6 to 20/7 for both years 2006 and 2007).

            Total samples randomized for olive fruit size was 300 fruits representing [30 trees × 10 fruit for all directions and high for each experiment].

            The samples were kept in paper bags and transfered to the laboratory for the examination by the aid of sterio – microscope and all individual numbers of insect live (D. olea) stages were counted and recorded.

            The reduction percentage of total a liver insect olive fruit fly D. oleae were estimated according to Henderson and Tilton equation (1955).

            Reduction percentage =  

Where: Tb and Ta are respectively before and after treatment counts of total a live insect stages, and Cb, Ca are respectively untreated cheeks before and after treatment.

            Results were statistically analysed using L.S.D. (P < 0.05) (with costat program).

RESULTS AND DISCUSSION

            The first experiment: Traps baited during six weeks five examinations of inspections (15/6 – to 20/7 for both years 2006 and 2007) at Alarish district North Senai Governorate, Egypt.

Data in Table 1 showed that the total numbers of a live stages of Dacus oleae during these periods were 68 & 25 & 23 & 21 & 12 & 10 in 2006 and 66 & 23 & 21 & 14 & 10 & 9 in 2007 for the Match EC 5%, while there were 68 & 41 & 46 & 43 & 48 & 52 in 2006 and 66 & 39 & 45 & 47 & 47 & 51 in 2007 individual / samples in the untreated one.

The reduction percentage of  olive fruit fly stages were 39.02 % & 50 % & 55.81 & 75 % & 80.77 % in 2006 and 41.03 % & 53.33 % & 70.2 % & 78.7 & 82.35 % in 2007.

Mean reduction were 60.02 % and 65.1 % for both years 2006 and 2007, respectively.

            The second experiment: partial spray for trunk trees for the same periods 2006 and 2007 data summarized in table (2) showed that the total number of a live fruit fly stages were 68 & 29 & 25 & 19 & 14 & 13 in 2006 and 66 & 26 & 23& 17 & 12 & 12 in 2007 sample in treated trees, while there were 68 & 41 & 46 & 43 & 48 &52 in 2006 and in 66 & 39 & 45 & 47 & 47 & 51 in 2007 per samples in the untreated one.

            The reduction percentage of olive fruit fly stages were29.27 % & 45.65 % & 55.81 % & 70.83 % & 75 % in 2006  and 33.33 & 48.49 & 63.83 & 74.47 & 76.47 % in 2007.

Mean of reduction percentages were 56.06 % and 59.4 % during the two tested years, respectively.

            The statistically analysis (L.S.D0.05) showed that in Table 3 a positive highly significant correlation for traps attracting which values were 7.956** and 8.427** , during the two tested years, respectively.

These results are in harmony with those obtained by Andres 1979, Yayla 1983, Orphanides 1985, Michelatis 1990 and Katso Yannos 1992.

Conclusively, this studies clarified the mean percentage of reduction for both years 2006 and 2007 were 60.02 % and 69.10 % for the first method while were 56.06 % and 59.40 % for the second one, respectively.

REFERENCES

Andres, F. De (1979): Integrated control in the olive grove. Agricultura, Spain, 48 (569): 711 – 713. (C.f. R.A.E., Ser. A, 69 (3): 172).

Donia, A.R.; S.K. El-Sawaf and M.F. Abou-Ghadir (1972): Number of generations and seasonal abundance of the olive fruit fly, Dacus oleae (Gmel.) and the susceptibility of different olive varieties to infestation (Diptera: Trypetidae). Bull. Soc. Ent. Egypte, 55 : 201 – 209.