Safety and proper use of pesticides on orange fruits | ||||
| Egyptian Academic Journal of Biological Sciences, F. Toxicology & Pest Control | ||||
| Article 1, Volume 6, Issue 1, December 2014, Page 1-9 PDF (338.24 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/eajbsf.2014.17253 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
| Nagwa A. Hassan; Sawsan G. Radwan | ||||
| Plant Protection Res. Ins., Agric. Res. Center, Dokki, Giza | ||||
| Abstract | ||||
| The aim of this work is studying the correlation between applicable control of Parlatoria ziziphi (Lucas) and obtained healthy and high quality orange fruits. So, the objective of this research was organized through three parts, The first part was conducted in orange orchard at Qalubyia Governorate to evaluate the pesticidal efficiency of four compounds representing three insecticidal groups (Neonicotinoid, Avermectin and Organophosphrus) to struggle P. ziziphi on orange trees and protect the crop from the insect damage. The results published that Agriflex has the highest toxicity of the tested compound on P. ziziphi population and recorded 74.3% reduction, followed by Best (73% reduction), then Sunfidor (70.18% reduction) while Reldan came in the last order with 69.7% reduction. Also the statistical analysis elucidate the time uphold the efficiency of the four tested compound and the highest percentages reduction of P. ziziphi population after thirty days of application when compared by the other intervals. The second part: to determine the residues of the tested pesticides in orange fruits through initial time (zero time) and final time (at harvest). The results showed that the values of initial deposits of all tested insecticides were surpassed the maximum residue limits (MRL) while no residues of pesticides detected at harvest time (after 20 days of application).The third part: to examine the effect of the tested insecticides on quality orange fruit. Results obtained showed that all tested insecticides decreased the total soluble solids (TSS), total titratable acidity (Ta), Ascorbic acid and total sugar without significant differences except Best which increase the total sugar than untreated fruits while all tested insecticides exhibited non-significant increase on relative sweetness of orange fruits than untreated except Agriflex. The ratable data showed that all tested pesticides exhibited satisfied effect against P. ziziphi ranged from 69.73 to 74.31% reduction. They are safe at harvest interval 20 days after treatment. Also, they showed insignificant effect on orange fruits quality. It could be recommended Best 25% WP as it caused increase in total sugar in orange fruits, than un-treated; also fruits had the highest value of total soluble solids and acidity than other pesticides. | ||||
| Keywords | ||||
| Parlatoria ziziphi (Lucas) Control; Residues Quality orange fruits | ||||
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