Improving the properties of emulsifiable formulation of pesticides in relation to efficacy against pests. I- Evaluation of some adjuvants towards the control of scale insects
El-Shazaat, M., Abo-Shanab, A., Beshr, S. (2012). Improving the properties of emulsifiable formulation of pesticides in relation to efficacy against pests. I- Evaluation of some adjuvants towards the control of scale insects. EKB Journal Management System, 20(1), 79-86. doi: 10.21608/jpces.2012.462318
M. S. El-Shazaat; A. S. Abo-Shanab; Sahar M. Beshr. "Improving the properties of emulsifiable formulation of pesticides in relation to efficacy against pests. I- Evaluation of some adjuvants towards the control of scale insects". EKB Journal Management System, 20, 1, 2012, 79-86. doi: 10.21608/jpces.2012.462318
El-Shazaat, M., Abo-Shanab, A., Beshr, S. (2012). 'Improving the properties of emulsifiable formulation of pesticides in relation to efficacy against pests. I- Evaluation of some adjuvants towards the control of scale insects', EKB Journal Management System, 20(1), pp. 79-86. doi: 10.21608/jpces.2012.462318
El-Shazaat, M., Abo-Shanab, A., Beshr, S. Improving the properties of emulsifiable formulation of pesticides in relation to efficacy against pests. I- Evaluation of some adjuvants towards the control of scale insects. EKB Journal Management System, 2012; 20(1): 79-86. doi: 10.21608/jpces.2012.462318

Improving the properties of emulsifiable formulation of pesticides in relation to efficacy against pests. I- Evaluation of some adjuvants towards the control of scale insects

Journal of Pest Control and Environmental Sciences
Volume 20, Issue 1, 2012, Pages 79-86    PDF (591.71 K)
DOI: 10.21608/jpces.2012.462318
Authors
M. S. El-Shazaat* ; A. S. Abo-Shanab; Sahar M. Beshr
Central Agriculture Pesticides Laboratory, Plant Protection Research Institute, Agricultural Research Center, Egypt
Abstract
Non-ionic polyoxy ethylene glycol (PEG) surfactants manufactured in Egypt, as well as a foreign wetting agent; ethoxylated octylphenol (ExtravonR) were tested alone and in their combinations containing emulsifiable formulation (EC) of Super Masrona mineral oil (95%) in relation to efficacy against two scale insects infesting citrus and olive orchards. The first is citrus wax scale insect (Family: coccidae), Ceroplastes floridenses Comst. and the second is an armored scale insect (white olive scale insect) (Fam: Diaspididae), Leucaspis riccae (Tag. - Tozz). The obtained results indicated that the PEG oleate and laurate surfactants were capable to give stable milky emulsion in water where hydrophilic-lipophilic balance (HLB) values were in the range of (8 - 11). However, HLB values were (11 - 12) and more for PEG 600 non-oleate and extravon, respectively. The evaluated adjuvants highly reduced the surface tension of water (72.8 dyne cm-1without undesirable effects indicating that these adjuvants are promising to improve the absorption and adhesion of pesticides under field application. On the other hand, the adjuvant lowered the surface tension of super Masrona emulsions that passed the emulsion stability test, except both PEG 600 mono-oleate and extravon where they had foam volumes as 14.0% and 7.0%, respectively. Super Masrona oil at its 3/4 recommended rate mixed with PEG 200 mono-oleate (0.1\%) was efficient as the recommended rate of the oil alone against C. floridenses in citrus orchard. The same trend was obtained against L. riccae, while olive scale insect in olive orchard.
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